Your lectures are fairly easy to understand and the animations are highly engaging.I have never found this subject this easy to understand . Thank You!!
wow,can you do videos on design of retaining wall,strap footing,flat slabs,corbels,eccentric footing,combined footing.your lectures are simple,clear and not boring unlike other lectures.
No, it does not mean the structure is safe. The analysis tells us how much force each member is going to carry. But if the truss members are not adequately designed (sized), the structure would fail under the applied load. Structural design is a related but different topic which has not been discussed in these lecture series.
Regarding the load must be placed at the joint, in real life is that possible to do? For example at a bridge, the load is moving. How I can consider when the member must be analyzed as a beam (moment and shear applied) or as a truss (only axial)?
It all depends on how the bridge surface rests on the structure. If the deck of the bridge rests directly on the long slender (truss members), shear and moment would develop in the members causing structural failure (assuming the structure was designed as a truss). However, if the structure has been designed as a truss, the bridge deck does not rest on the truss members, it rests on a series of cross beams that are connected to the side truss(es) at their joints. This scheme allows the load to be transferred to the truss joints via the cross beams. See SA35 (th-cam.com/video/Vg5LDGMoCO4/w-d-xo.html) for a simple illustration of this load transfer scheme.
The sum of the force at each joint is zero. But when I want to design the gusset plate for the joint, is that theory is applied? how to calculate the force that happens at the joint?
The gusset plate is the place that several truss members come together each carrying an axial force. The connection between a member and the plate is done using bolts or weld. The force in each member is transferred to the plate via these bolts/weld causing stress to develop around each connection. Although the sum of the forces acting on the plate is zero, but each force is causing stress in the plate at the connection point. In part, the design of the gusset plate involves determining the location and spacing of the bolts/welds and the thickness of the plate in order to ensure that no tearing of the material takes places where the members and the plate meet. Furthermore, viewed as a rigid body that is in the state of equilibrium (i.e., the sum of the forces acting on it is zero), the plate is subjected to several forces pulling and pushing it in different directions. Hence, internal stresses develop in the body. If the material and section properties of this rigid body are not adequate, it could fail due to excessive (tensile/compressive) stress.
@@DrStructure Thanks for the reply. This is just to confirm, are you saying that a diagonal member weight should be divided by two and place each of the half load at each end of the member? Is it the same approach for the vertical ones?
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Your lectures are fairly easy to understand and the animations are highly engaging.I have never found this subject this easy to understand . Thank You!!
wow,can you do videos on design of retaining wall,strap footing,flat slabs,corbels,eccentric footing,combined footing.your lectures are simple,clear and not boring unlike other lectures.
Thank you, very important lecture for Civil Engineering Students❣️
can you please do video about dynamics aswell thanks.
Thanks for helping us to uderstand easily please ubload others subjecs like reforced concrete design
Thank you, very clear explanation. But what does this analysis means or used for? Does it mean the truss is adequately safe in taking the loads?
No, it does not mean the structure is safe. The analysis tells us how much force each member is going to carry. But if the truss members are not adequately designed (sized), the structure would fail under the applied load. Structural design is a related but different topic which has not been discussed in these lecture series.
Regarding the load must be placed at the joint, in real life is that possible to do? For example at a bridge, the load is moving. How I can consider when the member must be analyzed as a beam (moment and shear applied) or as a truss (only axial)?
It all depends on how the bridge surface rests on the structure. If the deck of the bridge rests directly on the long slender (truss members), shear and moment would develop in the members causing structural failure (assuming the structure was designed as a truss). However, if the structure has been designed as a truss, the bridge deck does not rest on the truss members, it rests on a series of cross beams that are connected to the side truss(es) at their joints. This scheme allows the load to be transferred to the truss joints via the cross beams. See SA35 (th-cam.com/video/Vg5LDGMoCO4/w-d-xo.html) for a simple illustration of this load transfer scheme.
@@DrStructure Nice, thanks a lot.
Thank you 😍❤ the best teacher in engineering mechanics static🤗😊
Can you please make lecture on columns and flexures
Great video. Joint F. -Fcf*sin60=0 Sind of 60 ist 0.866. how did you determine 0? Thank you
Correct, sin 60 is not zero. Therefore, for the equilibrium equation: Fcf Sin(60) = 0 to be satisfied, Fcf has to be zero.
The sum of the force at each joint is zero. But when I want to design the gusset plate for the joint, is that theory is applied? how to calculate the force that happens at the joint?
The gusset plate is the place that several truss members come together each carrying an axial force. The connection between a member and the plate is done using bolts or weld. The force in each member is transferred to the plate via these bolts/weld causing stress to develop around each connection. Although the sum of the forces acting on the plate is zero, but each force is causing stress in the plate at the connection point. In part, the design of the gusset plate involves determining the location and spacing of the bolts/welds and the thickness of the plate in order to ensure that no tearing of the material takes places where the members and the plate meet.
Furthermore, viewed as a rigid body that is in the state of equilibrium (i.e., the sum of the forces acting on it is zero), the plate is subjected to several forces pulling and pushing it in different directions. Hence, internal stresses develop in the body. If the material and section properties of this rigid body are not adequate, it could fail due to excessive (tensile/compressive) stress.
@@DrStructure Thanks again for the answer. Hope the best for this channel. :)
@@bagusbudi3018 You're welcome!
In the real world, how do we show the dead load for each of the truss member? Thanks in advance for the reply.
The weight of each member can be placed at its end joints.
@@DrStructure Thanks for the reply. This is just to confirm, are you saying that a diagonal member weight should be divided by two and place each of the half load at each end of the member? Is it the same approach for the vertical ones?
Yes!
@@DrStructure Thanks a lot.
hello just want to ask how did you get the 60 degrees angle thank u
inverse tangent of 8.66 over (10/2)
your videos are very important to us engineering students very informative unlike other tutorials shhh very boring
Thanks for the feedback.
Can u share the link of Shear Force and Bending Moment Diagrams. That concept is really hard for me to understand.
The video lectures on shear and moment are listed here:
lab101.space/Course-Statics.asp
And here
lab101.space/Course-StructuralAnalysis.asp
@@DrStructure Thank You !!!
You're welcome.
can u upload the solution for the question?
You can use our (free) online course to access updated lectures and exercise problem solutions. The link is provided in the video description field.
please ı want turkish translation
Maam can i have ur real name?
You can learn about the lead person for this educational project, and youtube channel, by visiting Lab101.space