Julius Cezar A. Marciano BSCE 3A The video tackled tension and axial force in the first part. The are some formulas such as the formula for stress. In the second part it talks about the nominal tensile strength computation which shows the formula to get tensile yielding for gross area and net area. This are some of the limit states. In this part, it tackled the difference of net area and gross area where the gross area is a cross sectional of the whole plate while the net area is a cross sectional area of the whole plate minus the hole in the plate etc. There are also other limit state but not all of it will be tackled or used. The third part is all about determination of area for gross are and net area in order to get . Gage spaces and nominal hole dimension are also tackled. The most confusing as of now for me is the shear lag factors where it has many cases. As I watched the video, LRFD AND ASD under anlysis of design was tackled and will be used in analysis of tension member. That's all of the things I remembered and learned, thank you.
The video tackled tension and axial force in the first part. The are some formulas such as the formula for stress. In the second part it talks about the nominal tensile strength computation which shows the formula to get tensile yielding for gross area and net area. This are some of the limit states. In this part, it tackled the difference of net area and gross area where the gross area is a cross sectional of the whole plate while the net area is a cross sectional area of the whole plate minus the hole in the plate etc. There are also other limit state but not all of it will be tackled or used. The third part is all about determination of area for gross are and net area in order to get . Gage spaces and nominal hole dimension are also tackled. The most confusing as of now for me is the shear lag factors where it has many cases. As I watched the video, LRFD AND ASD under anlysis of design was tackled and will be used in analysis of tension member. That's all of the things I remembered and learned.
The discussion distinguishes the difference between the analysis and design. In analysis, we compute the available capacity, whereas in design, we apply a reduction factor for the required strength. It introduces the LRFD and ASD provided by the NSCP, which will be used in solving for tensile yielding on the gross and net sections. Also, it highlighted some important formulas to remember in net area and gross area. Moreover, the limit states to be used were specified in the NSCP as well as the shear lag factor in solving the effective net area for specific elements. Finally, it discussed other limit states as well as the block shear strength and some cases for a given tension stress.
The video provided a comprehensive understanding of tension members in structural engineering. It covered essential topics, including limit states such as yielding of the gross section and fracture of the net section, emphasizing their role in ensuring safety and reliability. The computation of nominal tensile strength and the determination of gross and net areas were explained, highlighting their importance in structural performance. The discussion on nominal hole dimensions and effective net area illustrated how small adjustments impact overall design. This lesson reminded me of the importance of precision, following design according to the codes (The NSCP), and paying attention to detail to create safe and reliable structures.
This video gave a very useful introductory lesson about tension members, a necessary component of steel structures. The first part of the video explained very well the meaning of tension-the pulling force, how it stretches, and the action-reaction of it clearly, using a tug-of-war metaphor to show its accessibility before diving into particular application areas: for example, truss bridges and cable-supported roofs in civil engineering. It proved quite revealing that even the smallest components-visible in bolts experience tension and shear. The lecture also highlighted salient static principles for computing forces in the structural members. One key aspect was the importance of understanding gross and net areas- connection holes could influence their presence. Grasping these aspects would definitely affect stress calculations and therefore would give an important notice to careful and accurate design in construction. The introduction of the simple stress formula was also given on the first part of the video as it can also be of used in some computations. The video also laid a pretty nice foundation for future courses on tension members, which drew me even closer to something that looked quite simple to master but had so much complexity, as well as its place in the grand structure of how engineering has developed in general. Basic concepts of physics, as any engineering discipline would put it, are important. I am interested to see how these principles will be used in actual design scenarios in future discussions.
Upon watching the lecture video, I have learned a lot of concepts that would be helpful in studying this course. Some of these includes the review of the definition about "Tension" which is defined as the pulling force transmitted axially. The lecture also gave an emphasis on the stresses to the compression and tension members of truss. Moreover, I have learned about the two limit states that were introduced which is the excessive deformation and fracture. The discussion have also tackled about solving the nominal tensile strength for tensile yielding on gross section and tensile rupture for net section. Additionally, I have learned some insights about the gross area (total cross-sectional area :L×W) and net area (gross area minus area of the bolt holes. Some takeaways that I have also appreciated is the way the video explained the bolt diameter, bolt holes, and how to get the effective bolt holes. Furthermore, I learned about the calculation of effective net area but struggled a bit in understanding shear lag factor because of too many cases. On the last part of the video, I learned about the difference between analysis and design as well as analysis of tension members. To sum it up, I have learned important concepts that would be very useful in practicing problem solving and applying real life application of steel design.
In this lecture, I learnt how to analyse and design tension members of steel structures. The lecture was about methods of joints and sections for calculating internal forces. Important concepts included the mechanisms of tension failure modes like deformation and fracture and the importance of gross and net cross-sectional areas. Yielding and rupture limit states were discussed with formulas that were used to ensure safety. Shear log factors, bolt, and welded connections were also addressed, with the emphasis put on connection type in structural design and their performance. This lecture reinforced the necessity of precise calculations and thoughtful design in creating safe and durable steel structures.
The main topic of the video is tension, which is defined as a state of being overextended. The limit states for Tension Members are also addressed. The yielding of the gross section may cause excessive deformation, and if the stress at the net section approaches the ultimate stress, fracture may result. This movie also introduced the formula of stress. I also learned how to calculate nominal tensile strength from this video. I discovered that this allows us to obtain the Allowable Strength, which discusses ASD, and the Design Strength, which discusses LRFD. The topic of area determination is also covered in this video where I learned how to calculate net and gross area.
As I watched the lecture video, I learned many things that deepened my knowledge in this course. The first part made me recall what tension force is. Tension force is defined as the state of being stretched tight or the pulling force transmitted axially. An example of this is a game of tug of war. Moreover, tension force can be seen in civil engineering structures, like the truss members of a bridge, which are referred to as tension members. Tension members are structural elements subjected to axial tensile forces, playing a crucial role in various structures like bridges and buildings. I also learned about the analysis of tension members, which includes axial forces (compressive stress and tensile stress). The stress formula was also discussed, which is equal to force over area. However, the area may differ depending on certain circumstances. There are two types of limit states for tension members: excessive deformation and fracture. Another key takeaway is that using the NSCP, we can solve for the nominal tensile strength. Two formulas were introduced for solving this: (1) for tensile yielding in the gross section and (2) for tensile rupture in the net section. In these formulas, the resistance factor is used for LRFD, and the factor of safety is used for ASD. These factors are necessary because we cannot be certain that the gross area will act effectively. I also learned about the other limit states. Additionally, I learned how to determine the area for different cases. Two types of areas can be used: the gross area and the net area. The gross area is simply the total cross-sectional area (length × width). On the other hand, the net area is solved by subtracting the area of the bolt holes from the gross area. The net area has different cases depending on the structure or elements being used. These include simple connections, staggered holes, staggered holes extending to flanges, and HSS welded to a gusset plate. Additional formulas were introduced for these cases, such as the gage space formula. The video also taught me how to determine the values of bolts, bolt holes, and effective bolt holes using Table 510.3.3 (nominal hole dimensions). I also learned how to calculate the effective net area and the shear lag reduction factor. Calculating the shear lag reduction factor involves various cases depending on the steel elements being used, as presented in a table in the video. Lastly, I learned the difference between analysis and design. Analysis involves calculating the load capacity of a given member and is more specific in nature, while design involves determining the required size of a member based on given loads. Furthermore, in the analysis and design of tension members, there are additional formulas for solving tensile yielding in the gross section and tensile rupture in the net section, specifically using LRFD and ASD. Toward the end of the video, I also learned another set of formulas for other limit states that affect the strength of tension elements. This video significantly enriched my understanding of the topic and its practical applications.
The video above taught me the basics of how tension members handle pulling forces and why it’s important to check for failures, like yielding or fracture, to ensure safety. I learned how to compute tensile strength using formulas for gross and net areas, where the gross area is the total cross-section, and the net area subtracts holes like bolt holes. It also explained how connections, such as single and staggered bolted connections, affect strength. The video also covered using ASD and LRFD methods for design, and it highlighted how to calculate tensile strength based on limit states like tensile yielding and rupture. Overall, it helped me understand the importance of proper design and analysis of tension members to ensure safety and stability in structures.
The lecture video “tension member” covered tension and axial force, including stress formulas and the computation of nominal tensile strength, focusing on tensile yielding for gross and net areas as limit states. It clarified the difference between gross area or total cross-sectional area and net area that accounts for deductions like holes. The third part explained calculating gross and net areas, addressing gage spacing and hole dimensions, while highlighting the complexity of shear lag factors due to multiple cases. It also introduced LRFD and ASD methods for designing tension members. Overall, the video emphasized key principles for analyzing tension members, though not all limit states were explored, that’s all thank you.
The video covered the basics of tension members, which resist axial tensile forces by relying on yield and ultimate tensile strength. It explained stress calculation, nominal tensile strength for gross and net areas, and the difference between the two. Shear lag, which addresses uneven stress distribution across the member, was discussed but can be complex due to its various cases and configurations. The video introduced two design methods: LRFD, which uses factored loads for safety, and ASD, which keeps stresses within allowable limits. Overall, it focused on designing and analyzing tension members to ensure strength, efficiency, and reliable performance under different loading conditions.
The video discussion provides an in-depth analysis of tension members, focusing on their design using ASD and LRFD methods. It explains key failure modes such as gross section yielding and net section fracture, emphasizing the importance of considering both gross and net cross-sectional areas in design. The discussion also introduces shear yielding, shear rupture, and block shear, which affect the strength of connections. Additionally, the video includes sample computations using the National Structural Code of the Philippines (NSCP), demonstrating how to determine tensile strength while ensuring stability. This video provided me with valuable knowledge about tension members, highlighting the importance of precise calculations and proper design considerations for structural safety.
The lecture video provides an overview of the analysis and design of tension members in structural engineering, focusing on concepts on tension, internal forces, and failure modes. Tension is defined as the state of being stretched tight, represented by pulling forces transmitted through various structural elements like ropes, chains, and rods. The analysis of tension members involves methods such as the method of joints and the method of sections, which help compute internal forces acting on structures. On the video it stated the importance of understanding the effective cross-sectional area, which is crucial for calculating stress. The nominal strength for these states is derived from yield stress and ultimate stress, respectively. From the video it stated that also covers design strength calculations, highlighting the application of resistance factors in both Allowable Strength Design (ASD) and Load and Resistance Factor Design (LRFD) methodologies. Furthermore, the video's purpose is to addresses shear and bearing strength considerations, as well as potential failure modes of tension members, including block shear failure. The importance of understanding these concepts is critical for ensuring the safety and reliability of structural designs in engineering applications.
The video "Steel Design: Tension Members (Lecture)" presents a detailed review of tension members in steel structures. The lecturer begins by defining tension members and their role in structural engineering. They dive into design concepts, including the use of numerous regulations and standards, as well as crucial factors like stress, strain, and material qualities. The course also explains how to calculate member sizes using load factors and safety margins. Practical examples are provided to help explain the ideas and reinforce learning. This video is useful for civil engineering students and professionals, since it provides a detailed approach to designing and analyzing tension members in steel structures.
This video lecture gave me a deeper understanding of tension members and their importance in structural safety. It presented ideas like axial force and stress and showed me how these members manage pulling forces. What stood out to me was learning how to calculate tensile strength by analyzing the gross and net cross-sectional areas, with the latter accounting for bolt holes. I became aware of how accurate and thorough structural design needs to be after the lecture's discussion on limit states and design techniques like Load and Resistance Factor Design (LRFD) and Allowable Stress Design (ASD). I found it fascinating how connection types, such as single and staggered bolted connections, influence tensile strength. Even though the computations appeared complex, I appreciated how they help guarantee that constructions can withstand tension in a safe manner. This made me reflect on how important careful planning and analysis are in engineering. In conclusion, the lecture challenged me but also helped me appreciate the details of structural design.
The video “Steel Design: Tension Members” explained how tension members handle pulling forces in structures. It discussed key topics like tensile strength, failure types such as yielding and fracture, and how to calculate gross, net, and effective areas. It also showed how bolted connections, like single and staggered ones, affect strength. The lecture introduced design methods like ASD and LRFD, emphasizing the importance of proper area calculations to ensure safety. Overall, the lecture effectively enhances understanding of tension members, providing valuable knowledge for us.
Upon watching the video lecture, the video provided an explanation of how tension members handle pulling forces and the importance of checking for failures like yielding or fracture to ensure safety of the structure. It taught me how to calculate tensile strength using formulas for gross and net areas, where the gross area is the full cross-section and the net area subtracts bolt holes. The video also covered the impact of connection types, like single and staggered bolted connections, on strength, and discussed the use of ASD and LRFD methods in design. It emphasized the importance of careful design and analysis to maintain structural stability and safety. I gained a deeper understanding of the complexities of tension management in structures and the significance of balancing theoretical knowledge with practical design to ensure reliability and safety in engineering. That’s why understanding the loads and forces affecting the structure is very important.
The video provided a detailed understanding of tension and its application in structural engineering. Learning about axial forces and how tensile strength is calculated for both gross and net areas was insightful. The explanation of different failure modes, like tensile yielding and rupture, emphasized the importance of precise calculations to prevent structural failures. The segment about bolt hole diameters and staggered connections particularly stood out to me, as it showed how minor design details can significantly affect the overall strength. This made me realize how critical it is to approach every aspect of design with precision and care.
From this discussion, I learned about tension members and their importance in structures. I found out that tension members are the parts that carry pulling forces, like in truss bridges or cables for roofs. I also learned about the gross area, net area, and effective net area, which are important when calculating stress in these members. There are two limit states tensile yielding and tensile rupture that were a bit confusing at first, but I understand now how they affect different parts of the member. The part about staggered holes and bolt failures was interesting, but it got a bit tricky with all the formulas. Overall, this helped me understand how tension members work and how to analyze them.
The video gives me thorough understanding about tension, tension member analysis and design, emphasizing the significance of tension, stress, and internal forces in structural elements. It clarified the difference between gross and net cross-sectional areas, considering factors such as bolt holes and shear effects that impact the effective area under tensile force. I also learned the differences between bolts, bolt hole diameter and effective bolt hole diameter. Additionally, it introduced the concepts of limit states, specifically excessive deformation and fracture, and the role of safety factors in determining design strength using both ASD and LRFD methods. In conclusion, I have gained enough knowledge to fill gaps onto my queries while watching this video.
The video gave an extensive discussion of many fundamental concepts in structural engineering, especially concerning axial forces, computation of tensile strength, and the determination of effective net areas. Although I could not finish the entire video, the content that I managed to absorb was really insightful and educational. This makes the subject matter more relatable and easier to understand, because one can easily see how theoretical principles are applied through formulas, diagrams, and real-world examples.The inclusion of formulas, and diagrams enhanced further the detail about how complex the areas as well as the tensile capacity would be with their determinations in ensuring efficiency and safety within the construction arena.
From the discussion on Steel Design: Tension Members, I learned the role of tension members in resisting pulling forces in a structure and the importance of identifying failure limit states, such as yielding or fracture, to ensure safety. I also learned the calculation of gross and net areas and nominal tensile strength using ASD and LRFD methods. The explanation of bolted connection cases, including single connection, staggered connection, and staggered connection extending to flanges, clarified how connections impact the strength of a member. Additionally, I learned the significance of understanding the differences between a bolt, bolt hole diameter, and effective bolt hole diameter.
The discussion is all about the tension members where in different sub topics where tackled such as its basic concepts, axial forces, tensile strength, area determination, analysis and design of tension members and the other limit states. Tension is defined as the state of being stretched or there is a pulling force in an object. An example is when we are playing tug of war and the tension in truss bridge. Computation for tensile strength was also discussed which is the lower value obtained according to the limit states of tensile yielding in the gross section and tensile rupture in the net section. Moreover, the discussion also highlights area determination. It was mentioned that there are three types of area such as the gross area, net area and effective net area. Gross sectional area is just the total cross sectional area, net area is the sum of the product of the thickness and the width if each element while the effective net area is the product of the net area and the shear lag factor(for bolted connection) or the product of the gross area and shear lag factor(welded connection). It was also mentioned that the net area should be equal or less than to 0.85(Ag) and if the value of An is greater than 0.85Ag, An is equal to 0.85Ag. Different cases for shear lag factor was also discussed. When it comes to analysis and design of tension members, analysis is all about adequacy or checking if the capacity of the structures is adequate to the load that it need to carry. Then for the design, it is just all about load calculation.
This video discussed that tension members are really important in keeping buildings and structures safe because they handle pulling forces. I learned that their strength depends on things like stress, the size of the material’s cross-section, and how well they can resist these forces. I now have an idea about the difference between the gross area, which is the full cross-section of a plate, and the net area, which is the gross area minus holes for bolts. Calculating tensile strength using these areas and understanding limit states, like tensile yielding, showed me how detailed structural design needs to be. The video then discussed the Load and Resistance Factor Design (LRFD) and Allowable Stress Design (ASD) methods and proceeded to the calculations. I also learned how different connection types, like single and staggered bolted connections, affect tensile strength, which was interesting.
In this video lecture, I gained a deep understanding of tension members and other ideas revolving around this. The instructor discussed key concepts, including limit states like yielding and fracture, and their significance in maintaining safety in structures. The discussion covered various methods for analyzing internal forces in structures and learned about the analysis and design of tension members, focusing on Allowable Stress Design (ASD) and Load and Resistance Factor Design (LRFD). I discovered the importance of tensile stress calculations, distinguishing between gross and net cross-sectional areas, as well as the significance of limit states and effective net area. Understanding potential failure modes, such as shear and bolt failures, is essential for ensuring structural integrity. The lesson also highlighted the impact of small adjustments in design on overall structural performance, reinforcing the necessity of adhering to design codes and paying attention to detail. Overall, this lecture has significantly enhanced my knowledge about the steel design course.
The video discussed about tension, in its simplest form, is the state of being stretched tight. It is a pulling force transmitted along the length of an object. In civil engineering, tension plays a critical role, especially in structures like truss bridges. These structures rely on tension members to withstand forces, while bolted connections also experience tensile forces. Using principles of statics, we can calculate these forces, ensuring the structure performs as intended. One key aspect of tension members is their limit states, which include fracture and deformation. These are crucial because they determine the safety and functionality of the structure. Learning about Load and Resistance Factor Design (LFRD) and Allowable Stress Design (ASD) helped me understand how the nominal tensile strength is calculated and why it is important. These methods ensure that tension members can carry loads safely without exceeding their capacity. The discussion also tackled area determination for members which involved calculating the gross and net areas of a cross-section. Different arrangements of bolts in cross-sections highlighted how these designs impact a structure's strength. The concept of effective bolt hole diameters was also discussed which considers potential errors in connections to ensure safety. It's impressive how even minor details are calculated to enhance the reliability of structures. Another key takeaway was the effective net area, which is the area that safely carries loads. The video introduced the shear lag factor, which I found challenging due to its many cases. This factor accounts for situations where tension forces are not uniformly distributed across the section, particularly in complex cross-sections. Lastly, the discussion on other limit states and the corresponding formulas showed how to analyze tension members. Each formula has specific conditions, ensuring the structure meets all safety and performance requirements. Overall, this lecture deepened my appreciation for the level of detail and precision required in civil engineering to ensure that structures are not only functional but also safe for use.
The video explored the concept of tension, a critical mechanical force defined as the pulling force transmitted axially by means of a string, rope, chain, or similar objects. It is also present in members such as rods or trusses that are subjected to loads pulling in opposite directions. Understanding tension is essential in structural analysis and design, as it directly impacts the integrity and stability of structures. The video emphasized the importance of evaluating potential failures, such as yielding or fracture, to ensure the safety and reliability of structural components. The video also provided an insightful explanation of how to calculate tensile strength using formulas for the gross area and net area of a cross-section. The gross area represents the entire cross-sectional area of the member, while the net area accounts for reductions caused by holes or other discontinuities. The video also highlighting two widely used design methodologies in structural engineering: the Allowable Stress Design (ASD) method and the Load and Resistance Factor Design (LRFD) method. The knowledge that I gained from this video is crucial for ensuring the safety, efficiency, and longevity of structures in various engineering applications.
The lecture video in steel design is about tension members where in topic 1 discuss how tension members handle and pulling forces in structures. In topic 2 it discuss the two area which is the gross and net area where the gross area is a cross sectional area of the whole plate while the net area is a cross sectional area of the whole plate minus the whole in the plate. It also explained how to compute tensile strength using formulas for gross and net areas and how connections like a single and staggered bolted connections affect strength. It also explained LFRD and ASD which helped me to understand how nominal tensile strength is calculated. Overall, it deepened my learning for the complexity and precision required in designing safety and efficient steel structures.
From the video, I learned that tension members are crucial structural elements designed to resist axial tensile forces, relying on yield strength and ultimate tensile strength (rupture strength). The video highlighted shear lag, where stress distribution is uneven across the member. It explained two key design methods: LRFD, which incorporates factored loads and resistances for safety, and ASD, which ensures stresses stay within allowable limits. Design focuses on selecting appropriate members to meet safety and performance criteria, while analysis evaluates how these members perform under different loading conditions, ensuring they meet the required strength and efficiency.
Julius Cezar A. Marciano
BSCE 3A
The video tackled tension and axial force in the first part. The are some formulas such as the formula for stress. In the second part it talks about the nominal tensile strength computation which shows the formula to get tensile yielding for gross area and net area. This are some of the limit states. In this part, it tackled the difference of net area and gross area where the gross area is a cross sectional of the whole plate while the net area is a cross sectional area of the whole plate minus the hole in the plate etc. There are also other limit state but not all of it will be tackled or used. The third part is all about determination of area for gross are and net area in order to get . Gage spaces and nominal hole dimension are also tackled. The most confusing as of now for me is the shear lag factors where it has many cases. As I watched the video, LRFD AND ASD under anlysis of design was tackled and will be used in analysis of tension member. That's all of the things I remembered and learned, thank you.
The video tackled tension and axial force in the first part. The are some formulas such as the formula for stress. In the second part it talks about the nominal tensile strength computation which shows the formula to get tensile yielding for gross area and net area. This are some of the limit states. In this part, it tackled the difference of net area and gross area where the gross area is a cross sectional of the whole plate while the net area is a cross sectional area of the whole plate minus the hole in the plate etc. There are also other limit state but not all of it will be tackled or used. The third part is all about determination of area for gross are and net area in order to get . Gage spaces and nominal hole dimension are also tackled. The most confusing as of now for me is the shear lag factors where it has many cases. As I watched the video, LRFD AND ASD under anlysis of design was tackled and will be used in analysis of tension member. That's all of the things I remembered and learned.
Railene L. Pernia
BSCE 3D
Nadir C. Rivadeneira
BSCE-3D
Kristel Joy P. Cabral
BSCE~3D
Bien Carlo M. SIena
BSCE-3D
The discussion distinguishes the difference between the analysis and design. In analysis, we compute the available capacity, whereas in design, we apply a reduction factor for the required strength. It introduces the LRFD and ASD provided by the NSCP, which will be used in solving for tensile yielding on the gross and net sections. Also, it highlighted some important formulas to remember in net area and gross area. Moreover, the limit states to be used were specified in the NSCP as well as the shear lag factor in solving the effective net area for specific elements. Finally, it discussed other limit states as well as the block shear strength and some cases for a given tension stress.
Neriah Nina L. Manoos
BSCE-3D
The video provided a comprehensive understanding of tension members in structural engineering. It covered essential topics, including limit states such as yielding of the gross section and fracture of the net section, emphasizing their role in ensuring safety and reliability. The computation of nominal tensile strength and the determination of gross and net areas were explained, highlighting their importance in structural performance. The discussion on nominal hole dimensions and effective net area illustrated how small adjustments impact overall design. This lesson reminded me of the importance of precision, following design according to the codes (The NSCP), and paying attention to detail to create safe and reliable structures.
Kyle Beatriz Margaret L. Ledesma
BSCE 3D
Geniena B. Limpiada
BSCE-3D
This video gave a very useful introductory lesson about tension members, a necessary component of steel structures. The first part of the video explained very well the meaning of tension-the pulling force, how it stretches, and the action-reaction of it clearly, using a tug-of-war metaphor to show its accessibility before diving into particular application areas: for example, truss bridges and cable-supported roofs in civil engineering. It proved quite revealing that even the smallest components-visible in bolts experience tension and shear. The lecture also highlighted salient static principles for computing forces in the structural members. One key aspect was the importance of understanding gross and net areas- connection holes could influence their presence. Grasping these aspects would definitely affect stress calculations and therefore would give an important notice to careful and accurate design in construction. The introduction of the simple stress formula was also given on the first part of the video as it can also be of used in some computations. The video also laid a pretty nice foundation for future courses on tension members, which drew me even closer to something that looked quite simple to master but had so much complexity, as well as its place in the grand structure of how engineering has developed in general. Basic concepts of physics, as any engineering discipline would put it, are important. I am interested to see how these principles will be used in actual design scenarios in future discussions.
Samuel V. Valdepeña
BSCE-3D
Upon watching the lecture video, I have learned a lot of concepts that would be helpful in studying this course. Some of these includes the review of the definition about "Tension" which is defined as the pulling force transmitted axially. The lecture also gave an emphasis on the stresses to the compression and tension members of truss. Moreover, I have learned about the two limit states that were introduced which is the excessive deformation and fracture. The discussion have also tackled about solving the nominal tensile strength for tensile yielding on gross section and tensile rupture for net section. Additionally, I have learned some insights about the gross area (total cross-sectional area :L×W) and net area (gross area minus area of the bolt holes. Some takeaways that I have also appreciated is the way the video explained the bolt diameter, bolt holes, and how to get the effective bolt holes. Furthermore, I learned about the calculation of effective net area but struggled a bit in understanding shear lag factor because of too many cases. On the last part of the video, I learned about the difference between analysis and design as well as analysis of tension members. To sum it up, I have learned important concepts that would be very useful in practicing problem solving and applying real life application of steel design.
Hannah Mikaela V. Olivar
BSCE-3D
Irah M. Federnal
BSCE 3A
In this lecture, I learnt how to analyse and design tension members of steel structures. The lecture was about methods of joints and sections for calculating internal forces. Important concepts included the mechanisms of tension failure modes like deformation and fracture and the importance of gross and net cross-sectional areas. Yielding and rupture limit states were discussed with formulas that were used to ensure safety. Shear log factors, bolt, and welded connections were also addressed, with the emphasis put on connection type in structural design and their performance. This lecture reinforced the necessity of precise calculations and thoughtful design in creating safe and durable steel structures.
Lyndhell Mae L. Pangilinan
BSCE-3A
The main topic of the video is tension, which is defined as a state of being overextended. The limit states for Tension Members are also addressed. The yielding of the gross section may cause excessive deformation, and if the stress at the net section approaches the ultimate stress, fracture may result. This movie also introduced the formula of stress. I also learned how to calculate nominal tensile strength from this video. I discovered that this allows us to obtain the Allowable Strength, which discusses ASD, and the Design Strength, which discusses LRFD. The topic of area determination is also covered in this video where I learned how to calculate net and gross area.
Denielle Marie V. Peñaroyo
BSCE - 3D
As I watched the lecture video, I learned many things that deepened my knowledge in this course. The first part made me recall what tension force is. Tension force is defined as the state of being stretched tight or the pulling force transmitted axially. An example of this is a game of tug of war. Moreover, tension force can be seen in civil engineering structures, like the truss members of a bridge, which are referred to as tension members. Tension members are structural elements subjected to axial tensile forces, playing a crucial role in various structures like bridges and buildings. I also learned about the analysis of tension members, which includes axial forces (compressive stress and tensile stress). The stress formula was also discussed, which is equal to force over area. However, the area may differ depending on certain circumstances.
There are two types of limit states for tension members: excessive deformation and fracture.
Another key takeaway is that using the NSCP, we can solve for the nominal tensile strength. Two formulas were introduced for solving this: (1) for tensile yielding in the gross section and (2) for tensile rupture in the net section. In these formulas, the resistance factor is used for LRFD, and the factor of safety is used for ASD. These factors are necessary because we cannot be certain that the gross area will act effectively. I also learned about the other limit states.
Additionally, I learned how to determine the area for different cases. Two types of areas can be used: the gross area and the net area. The gross area is simply the total cross-sectional area (length × width). On the other hand, the net area is solved by subtracting the area of the bolt holes from the gross area. The net area has different cases depending on the structure or elements being used. These include simple connections, staggered holes, staggered holes extending to flanges, and HSS welded to a gusset plate. Additional formulas were introduced for these cases, such as the gage space formula.
The video also taught me how to determine the values of bolts, bolt holes, and effective bolt holes using Table 510.3.3 (nominal hole dimensions). I also learned how to calculate the effective net area and the shear lag reduction factor. Calculating the shear lag reduction factor involves various cases depending on the steel elements being used, as presented in a table in the video.
Lastly, I learned the difference between analysis and design. Analysis involves calculating the load capacity of a given member and is more specific in nature, while design involves determining the required size of a member based on given loads. Furthermore, in the analysis and design of tension members, there are additional formulas for solving tensile yielding in the gross section and tensile rupture in the net section, specifically using LRFD and ASD. Toward the end of the video, I also learned another set of formulas for other limit states that affect the strength of tension elements.
This video significantly enriched my understanding of the topic and its practical applications.
Venus T. Buenaventura
BSCE - 3A
The video above taught me the basics of how tension members handle pulling forces and why it’s important to check for failures, like yielding or fracture, to ensure safety. I learned how to compute tensile strength using formulas for gross and net areas, where the gross area is the total cross-section, and the net area subtracts holes like bolt holes. It also explained how connections, such as single and staggered bolted connections, affect strength. The video also covered using ASD and LRFD methods for design, and it highlighted how to calculate tensile strength based on limit states like tensile yielding and rupture. Overall, it helped me understand the importance of proper design and analysis of tension members to ensure safety and stability in structures.
Carlo O. Pagalan
BSCE 3D
The lecture video “tension member” covered tension and axial force, including stress formulas and the computation of nominal tensile strength, focusing on tensile yielding for gross and net areas as limit states. It clarified the difference between gross area or total cross-sectional area and net area that accounts for deductions like holes. The third part explained calculating gross and net areas, addressing gage spacing and hole dimensions, while highlighting the complexity of shear lag factors due to multiple cases. It also introduced LRFD and ASD methods for designing tension members. Overall, the video emphasized key principles for analyzing tension members, though not all limit states were explored, that’s all thank you.
Iverson M. Sosa
BSCE-3D
Mark Edward M. Saudan
BSCE-3D
The video covered the basics of tension members, which resist axial tensile forces by relying on yield and ultimate tensile strength. It explained stress calculation, nominal tensile strength for gross and net areas, and the difference between the two. Shear lag, which addresses uneven stress distribution across the member, was discussed but can be complex due to its various cases and configurations. The video introduced two design methods: LRFD, which uses factored loads for safety, and ASD, which keeps stresses within allowable limits. Overall, it focused on designing and analyzing tension members to ensure strength, efficiency, and reliable performance under different loading conditions.
Penelope S. Marciano
BSCE-3D
The video discussion provides an in-depth analysis of tension members, focusing on their design using ASD and LRFD methods. It explains key failure modes such as gross section yielding and net section fracture, emphasizing the importance of considering both gross and net cross-sectional areas in design. The discussion also introduces shear yielding, shear rupture, and block shear, which affect the strength of connections. Additionally, the video includes sample computations using the National Structural Code of the Philippines (NSCP), demonstrating how to determine tensile strength while ensuring stability. This video provided me with valuable knowledge about tension members, highlighting the importance of precise calculations and proper design considerations for structural safety.
Hannah Jade L. Garay
BSCE-3A
The lecture video provides an overview of the analysis and design of tension members in structural engineering, focusing on concepts on tension, internal forces, and failure modes. Tension is defined as the state of being stretched tight, represented by pulling forces transmitted through various structural elements like ropes, chains, and rods. The analysis of tension members involves methods such as the method of joints and the method of sections, which help compute internal forces acting on structures. On the video it stated the importance of understanding the effective cross-sectional area, which is crucial for calculating stress. The nominal strength for these states is derived from yield stress and ultimate stress, respectively. From the video it stated that also covers design strength calculations, highlighting the application of resistance factors in both Allowable Strength Design (ASD) and Load and Resistance Factor Design (LRFD) methodologies. Furthermore, the video's purpose is to addresses shear and bearing strength considerations, as well as potential failure modes of tension members, including block shear failure. The importance of understanding these concepts is critical for ensuring the safety and reliability of structural designs in engineering applications.
Ljay Luis A Maigting
BSCE-3A
The video "Steel Design: Tension Members (Lecture)" presents a detailed review of tension members in steel structures. The lecturer begins by defining tension members and their role in structural engineering. They dive into design concepts, including the use of numerous regulations and standards, as well as crucial factors like stress, strain, and material qualities. The course also explains how to calculate member sizes using load factors and safety margins. Practical examples are provided to help explain the ideas and reinforce learning. This video is useful for civil engineering students and professionals, since it provides a detailed approach to designing and analyzing tension members in steel structures.
Irene Jane E. Naling
BSCE - 3D
This video lecture gave me a deeper understanding of tension members and their importance in structural safety. It presented ideas like axial force and stress and showed me how these members manage pulling forces. What stood out to me was learning how to calculate tensile strength by analyzing the gross and net cross-sectional areas, with the latter accounting for bolt holes. I became aware of how accurate and thorough structural design needs to be after the lecture's discussion on limit states and design techniques like Load and Resistance Factor Design (LRFD) and Allowable Stress Design (ASD). I found it fascinating how connection types, such as single and staggered bolted connections, influence tensile strength. Even though the computations appeared complex, I appreciated how they help guarantee that constructions can withstand tension in a safe manner. This made me reflect on how important careful planning and analysis are in engineering. In conclusion, the lecture challenged me but also helped me appreciate the details of structural design.
Kian Jessie N. Almonte
BSCE-3D
Carmel Andrea I. Postrado
BSCE - 3A
The video “Steel Design: Tension Members” explained how tension members handle pulling forces in structures. It discussed key topics like tensile strength, failure types such as yielding and fracture, and how to calculate gross, net, and effective areas. It also showed how bolted connections, like single and staggered ones, affect strength. The lecture introduced design methods like ASD and LRFD, emphasizing the importance of proper area calculations to ensure safety. Overall, the lecture effectively enhances understanding of tension members, providing valuable knowledge for us.
JOHN RENIEL R. LAZO
BSCE 3A
Upon watching the video lecture, the video provided an explanation of how tension members handle pulling forces and the importance of checking for failures like yielding or fracture to ensure safety of the structure. It taught me how to calculate tensile strength using formulas for gross and net areas, where the gross area is the full cross-section and the net area subtracts bolt holes. The video also covered the impact of connection types, like single and staggered bolted connections, on strength, and discussed the use of ASD and LRFD methods in design. It emphasized the importance of careful design and analysis to maintain structural stability and safety. I gained a deeper understanding of the complexities of tension management in structures and the significance of balancing theoretical knowledge with practical design to ensure reliability and safety in engineering. That’s why understanding the loads and forces affecting the structure is very important.
John Alexander A. Pilar
BSCE-3A
The video provided a detailed understanding of tension and its application in structural engineering. Learning about axial forces and how tensile strength is calculated for both gross and net areas was insightful. The explanation of different failure modes, like tensile yielding and rupture, emphasized the importance of precise calculations to prevent structural failures. The segment about bolt hole diameters and staggered connections particularly stood out to me, as it showed how minor design details can significantly affect the overall strength. This made me realize how critical it is to approach every aspect of design with precision and care.
John Russel A. Mamplata
BSCE 3A
From this discussion, I learned about tension members and their importance in structures. I found out that tension members are the parts that carry pulling forces, like in truss bridges or cables for roofs. I also learned about the gross area, net area, and effective net area, which are important when calculating stress in these members. There are two limit states tensile yielding and tensile rupture that were a bit confusing at first, but I understand now how they affect different parts of the member. The part about staggered holes and bolt failures was interesting, but it got a bit tricky with all the formulas. Overall, this helped me understand how tension members work and how to analyze them.
Arceil S. Perlas
BSCE 3A
The video gives me thorough understanding about tension, tension member analysis and design, emphasizing the significance of tension, stress, and internal forces in structural elements. It clarified the difference between gross and net cross-sectional areas, considering factors such as bolt holes and shear effects that impact the effective area under tensile force. I also learned the differences between bolts, bolt hole diameter and effective bolt hole diameter. Additionally, it introduced the concepts of limit states, specifically excessive deformation and fracture, and the role of safety factors in determining design strength using both ASD and LRFD methods. In conclusion, I have gained enough knowledge to fill gaps onto my queries while watching this video.
Daven Dave U. Macunat
BSCE-3D
Gian Carlo C. Mawac
BSCE-3D
The video gave an extensive discussion of many fundamental concepts in structural engineering, especially concerning axial forces, computation of tensile strength, and the determination of effective net areas. Although I could not finish the entire video, the content that I managed to absorb was really insightful and educational. This makes the subject matter more relatable and easier to understand, because one can easily see how theoretical principles are applied through formulas, diagrams, and real-world examples.The inclusion of formulas, and diagrams enhanced further the detail about how complex the areas as well as the tensile capacity would be with their determinations in ensuring efficiency and safety within the construction arena.
Paul Tristan C. Mantala
BSCE 3A
From the discussion on Steel Design: Tension Members, I learned the role of tension members in resisting pulling forces in a structure and the importance of identifying failure limit states, such as yielding or fracture, to ensure safety. I also learned the calculation of gross and net areas and nominal tensile strength using ASD and LRFD methods. The explanation of bolted connection cases, including single connection, staggered connection, and staggered connection extending to flanges, clarified how connections impact the strength of a member. Additionally, I learned the significance of understanding the differences between a bolt, bolt hole diameter, and effective bolt hole diameter.
Jonalyn P. Ravanera
BSCE-3A
The discussion is all about the tension members where in different sub topics where tackled such as its basic concepts, axial forces, tensile strength, area determination, analysis and design of tension members and the other limit states. Tension is defined as the state of being stretched or there is a pulling force in an object. An example is when we are playing tug of war and the tension in truss bridge. Computation for tensile strength was also discussed which is the lower value obtained according to the limit states of tensile yielding in the gross section and tensile rupture in the net section. Moreover, the discussion also highlights area determination. It was mentioned that there are three types of area such as the gross area, net area and effective net area. Gross sectional area is just the total cross sectional area, net area is the sum of the product of the thickness and the width if each element while the effective net area is the product of the net area and the shear lag factor(for bolted connection) or the product of the gross area and shear lag factor(welded connection). It was also mentioned that the net area should be equal or less than to 0.85(Ag) and if the value of An is greater than 0.85Ag, An is equal to 0.85Ag. Different cases for shear lag factor was also discussed. When it comes to analysis and design of tension members, analysis is all about adequacy or checking if the capacity of the structures is adequate to the load that it need to carry. Then for the design, it is just all about load calculation.
Dien Melvin Ferriol
BSCE 3A
Art Heaverleen Ricohermoso
BSCE-3D
This video discussed that tension members are really important in keeping buildings and structures safe because they handle pulling forces. I learned that their strength depends on things like stress, the size of the material’s cross-section, and how well they can resist these forces. I now have an idea about the difference between the gross area, which is the full cross-section of a plate, and the net area, which is the gross area minus holes for bolts. Calculating tensile strength using these areas and understanding limit states, like tensile yielding, showed me how detailed structural design needs to be.
The video then discussed the Load and Resistance Factor Design (LRFD) and Allowable Stress Design (ASD) methods and proceeded to the calculations. I also learned how different connection types, like single and staggered bolted connections, affect tensile strength, which was interesting.
Ma. Elaine L. Viray
BSCE-3D
Anne Margarette T. Mangana
BSCE 3D
In this video lecture, I gained a deep understanding of tension members and other ideas revolving around this. The instructor discussed key concepts, including limit states like yielding and fracture, and their significance in maintaining safety in structures. The discussion covered various methods for analyzing internal forces in structures and learned about the analysis and design of tension members, focusing on Allowable Stress Design (ASD) and Load and Resistance Factor Design (LRFD). I discovered the importance of tensile stress calculations, distinguishing between gross and net cross-sectional areas, as well as the significance of limit states and effective net area. Understanding potential failure modes, such as shear and bolt failures, is essential for ensuring structural integrity. The lesson also highlighted the impact of small adjustments in design on overall structural performance, reinforcing the necessity of adhering to design codes and paying attention to detail. Overall, this lecture has significantly enhanced my knowledge about the steel design course.
Daven Jade M. Maglacas
BSCE-3D
The video discussed about tension, in its simplest form, is the state of being stretched tight. It is a pulling force transmitted along the length of an object. In civil engineering, tension plays a critical role, especially in structures like truss bridges. These structures rely on tension members to withstand forces, while bolted connections also experience tensile forces. Using principles of statics, we can calculate these forces, ensuring the structure performs as intended. One key aspect of tension members is their limit states, which include fracture and deformation. These are crucial because they determine the safety and functionality of the structure. Learning about Load and Resistance Factor Design (LFRD) and Allowable Stress Design (ASD) helped me understand how the nominal tensile strength is calculated and why it is important. These methods ensure that tension members can carry loads safely without exceeding their capacity. The discussion also tackled area determination for members which involved calculating the gross and net areas of a cross-section. Different arrangements of bolts in cross-sections highlighted how these designs impact a structure's strength. The concept of effective bolt hole diameters was also discussed which considers potential errors in connections to ensure safety. It's impressive how even minor details are calculated to enhance the reliability of structures. Another key takeaway was the effective net area, which is the area that safely carries loads. The video introduced the shear lag factor, which I found challenging due to its many cases. This factor accounts for situations where tension forces are not uniformly distributed across the section, particularly in complex cross-sections. Lastly, the discussion on other limit states and the corresponding formulas showed how to analyze tension members. Each formula has specific conditions, ensuring the structure meets all safety and performance requirements. Overall, this lecture deepened my appreciation for the level of detail and precision required in civil engineering to ensure that structures are not only functional but also safe for use.
James Marco M. Paredes
BSCE-3D
Shane D. Monterey
BSCE 3A
The video explored the concept of tension, a critical mechanical force defined as the pulling force transmitted axially by means of a string, rope, chain, or similar objects. It is also present in members such as rods or trusses that are subjected to loads pulling in opposite directions. Understanding tension is essential in structural analysis and design, as it directly impacts the integrity and stability of structures. The video emphasized the importance of evaluating potential failures, such as yielding or fracture, to ensure the safety and reliability of structural components.
The video also provided an insightful explanation of how to calculate tensile strength using formulas for the gross area and net area of a cross-section. The gross area represents the entire cross-sectional area of the member, while the net area accounts for reductions caused by holes or other discontinuities.
The video also highlighting two widely used design methodologies in structural engineering: the Allowable Stress Design (ASD) method and the Load and Resistance Factor Design (LRFD) method.
The knowledge that I gained from this video is crucial for ensuring the safety, efficiency, and longevity of structures in various engineering applications.
Zdric Gregorie G. Nobleza
BSCE 3A
Jabes L. Villaruel
BSCE-3D
The lecture video in steel design is about tension members where in topic 1 discuss how tension members handle and pulling forces in structures. In topic 2 it discuss the two area which is the gross and net area where the gross area is a cross sectional area of the whole plate while the net area is a cross sectional area of the whole plate minus the whole in the plate. It also explained how to compute tensile strength using formulas for gross and net areas and how connections like a single and staggered bolted connections affect strength. It also explained LFRD and ASD which helped me to understand how nominal tensile strength is calculated. Overall, it deepened my learning for the complexity and precision required in designing safety and efficient steel structures.
John Dale U. Largado
BSCE - 3A
From the video, I learned that tension members are crucial structural elements designed to resist axial tensile forces, relying on yield strength and ultimate tensile strength (rupture strength). The video highlighted shear lag, where stress distribution is uneven across the member. It explained two key design methods: LRFD, which incorporates factored loads and resistances for safety, and ASD, which ensures stresses stay within allowable limits. Design focuses on selecting appropriate members to meet safety and performance criteria, while analysis evaluates how these members perform under different loading conditions, ensuring they meet the required strength and efficiency.