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Jamshid Mohammadi
United States
เข้าร่วมเมื่อ 3 ก.พ. 2007
Journey along the Long Winding White Line
I am pleased to introduce you to a new book that I just published. This is a novel - a work of literary fiction and certainly a departure from my previous technical publication genre.
The title is: Journey along the Long Winding White Line.
You can find it on Amazon and Kindle books as a paperback or eBook. Here is the link: a.co/d/heh8Eng
The title is: Journey along the Long Winding White Line.
You can find it on Amazon and Kindle books as a paperback or eBook. Here is the link: a.co/d/heh8Eng
มุมมอง: 36
วีดีโอ
Structural Engineering Made Simple #24 Lateral Load Distribution to Bracings, Frames and Shear Walls
มุมมอง 7299 หลายเดือนก่อน
This video is Lesson 24 in my “Structural Engineering Made Simple” series. It presents the procedure for computing the lateral load distribution to lateral load resisting systems such as braced frames, moment frames and shear walls. Lateral loads are those from wind or seismic effects. The video also presents the procedure in computing the rigidity of shear walls, moment and braced frames.
Structural Engineering Made Simple #23 Composite Beam Design using Superposition of Elastic Stresses
มุมมอง 2.7Kปีที่แล้ว
This is video Lesson #23 in my series on "Structural Engineering Made Simple." This is Part 2 of a two-part series on composite beam design. The video presents the procedure for the design of composite beam systems used in buildings. The video uses the LRFD method of AISC for cases when the superposition of elastic stresses for computing the bending resistance and design will need to be used.
Structural Engineering Made Simple - Lesson 22: Composite Beam Design Using Section Plastic Stresses
มุมมอง 13Kปีที่แล้ว
This is video number 22 in my series on "Structural Engineering Made Simple." This is Part 1 of a two-part series on design of composite beams and focuses on cases when W sections are used and the method based on the plastic stress distribution can be applied. Note: when explaining the Table 3-19 of AISC for a design example, the correct value of parameter Y1 is 4.0 inches. I erroneously mentio...
Structural Engineering Made Simple - Lesson 21: Facade Cladding and Girt Beam Design
มุมมอง 3Kปีที่แล้ว
This is video number 21 in my series on "Structural Engineering Made Simple." The video presents the procedure for the design of girt beams that are used to support cladding in facades.
Structural Engineering Made Simple - Lesson #20: Computing Properties of Steel Built-up Sections
มุมมอง 1.9K2 ปีที่แล้ว
This is video number 20 in my series on "Structural Engineering Made Simple." The video presents the procedure for computing cross-sectional properties (moment of inertia, area, torsion constants) of steel built-up sections.
Structural Engineering Made Simple - Lesson #19: Analysis & Design of Reinforced Concrete T-Sections
มุมมอง 5502 ปีที่แล้ว
This is video number 19 in my series on "Structural Engineering Made Simple." The video presents the procedure for analysis and design of reinforced concrete beams with T-sections (also known as flanged-sections).
Structural Engineering Made Simple - Lesson 18: Design of Reinforced Concrete Beams for Torsion
มุมมอง 2.5K2 ปีที่แล้ว
This is video number 18th in my series on "Structural Engineering Made Simple." The video presents the procedure for design of reinforced concrete beams for torsion.
Structural Engineering Made Simple - Lesson 17: Design of a Combined Footing (Twin Foundation)
มุมมอง 4812 ปีที่แล้ว
This is video number 17th in my series on "Structural Engineering Made Simple." The video presents the procedure for design of combined footings (also known as twin foundations) in buildings. Example problems are also provided.
Structural Engineering Made Simple - Lesson 16: Building Foundations and Design of a Single Footing
มุมมอง 8732 ปีที่แล้ว
This is video number 16th in my series on "Structural Engineering Made Simple." The video presents an overview of various types of foundations. It also presents an example for design of a single footing.
Structural Engineering Made Simple - Lesson 15: Slenderness effect in reinforced concrete columns
มุมมอง 7313 ปีที่แล้ว
This is video number 15th in my series on "Structural Engineering Made Simple." The video presents the procedure for computing the design moments magnified for slenderness effect in concrete columns. Note: the unit for EI is pound-inch^2. In my lecture I mentioned pounds-inch. Please take a note of it.
Persian Walnut Cookies (the Keto Version)
มุมมอง 2063 ปีที่แล้ว
This is a simple recipe for delicious walnut cookies without all the carbs.
Simple Keto Lemon Cake Recipe
มุมมอง 383 ปีที่แล้ว
This is a simple recipe for a delicious lemon cake without all the carbs.
Structural Engineering Made Simple - Lesson 14: Design Considerations for Concrete Bearing Walls
มุมมอง 2.4K3 ปีที่แล้ว
Structural Engineering Made Simple - Lesson 14: Design Considerations for Concrete Bearing Walls
Structural Engineering Made Simple - Lesson 13: Design of Brick and CMU Masonry Bearing Walls
มุมมอง 26K3 ปีที่แล้ว
Structural Engineering Made Simple - Lesson 13: Design of Brick and CMU Masonry Bearing Walls
Structural Engineering Made Simple - Lesson 12B: Design of Anchors in Masonry
มุมมอง 2.4K3 ปีที่แล้ว
Structural Engineering Made Simple - Lesson 12B: Design of Anchors in Masonry
Structural Engineering Made Simple - Lesson 12A: Design of Anchors in Concrete
มุมมอง 21K3 ปีที่แล้ว
Structural Engineering Made Simple - Lesson 12A: Design of Anchors in Concrete
Structural Engineering Made Simple - Lesson 3: Design of Lintels in Masonry Walls
มุมมอง 6K3 ปีที่แล้ว
Structural Engineering Made Simple - Lesson 3: Design of Lintels in Masonry Walls
Common Terminologies used in Building Facade Inspection
มุมมอง 2634 ปีที่แล้ว
Common Terminologies used in Building Facade Inspection
Structural Engineering Made Simple - # 11: Doubly-Reinforced Concrete Rectangular-Section Beams
มุมมอง 2374 ปีที่แล้ว
Structural Engineering Made Simple - # 11: Doubly-Reinforced Concrete Rectangular-Section Beams
Structural Engineering Made Simple - # 7: Singly-Reinforced Concrete Rectangular-Section Beams
มุมมอง 3204 ปีที่แล้ว
Structural Engineering Made Simple - # 7: Singly-Reinforced Concrete Rectangular-Section Beams
Structural Engineering Made Simple - Lesson 10: Design of Reinforced Concrete Two-Way Flat Slabs
มุมมอง 8214 ปีที่แล้ว
Structural Engineering Made Simple - Lesson 10: Design of Reinforced Concrete Two-Way Flat Slabs
Structural Engineering Made Simple - Lesson 9: Design of Reinforced Concrete One-Way Flat Slabs
มุมมอง 3684 ปีที่แล้ว
Structural Engineering Made Simple - Lesson 9: Design of Reinforced Concrete One-Way Flat Slabs
Structural Engineering Made Simple - Lesson 8: Reinforced Concrete Beam Design for Shear
มุมมอง 4184 ปีที่แล้ว
Structural Engineering Made Simple - Lesson 8: Reinforced Concrete Beam Design for Shear
Moment Axial Load Interaction Data for Reinforced Concrete Columns
มุมมอง 4654 ปีที่แล้ว
Moment Axial Load Interaction Data for Reinforced Concrete Columns
Structural Engineering Made Simple-Lesson 5: Concrete Column with Biaxial Moments (Bresler’s Method)
มุมมอง 6K4 ปีที่แล้ว
Structural Engineering Made Simple-Lesson 5: Concrete Column with Biaxial Moments (Bresler’s Method)
Hello Sir ! You can tutorial the design of composite continuous beams (Girder beam).
Great video! In the example provided, as long as h/6 checks out, no further checks are required?
Great sir g
What a great video, I suscribe. Please keep going, your guidance is just great. By the way, can you please clarify me something? I don't understand why when considering the compressive force in the concrete we don't compute "a" as "c/b1", just like reinforced concrete design? being "b1" = 0.85 according to Whitney theory and "c" the portion of concrete under compressive stresses? Thank you for your time!
I'm not 100% as I am still studying this course. I'm pretty sure the reason that it is 0.85 is that you need to factor and account for the nonlinear nature of the stress block. We are doing plastic analysis but real life is plastic so we need to add the 0.85 factor to convert the non linear to an equivalent rectangular stress block. We don't compute the other factors like "a" because it is not reinforced concrete in this example its just a simple concrete slab. Someone please correct me if I am wrong anywhere.
In example 2: If we compare the value 21.3 for the stud capacity with the limit Rg Rp Ast Fu which is equal to 19.89, which value shall we consider 21.3 or 19.89
new subscriber here. thanks ang keep up the good work
Great breakdown. Appreciate the thoroughness & clear explaination.
Perfect!
I don't know if the formulas are wrong in the slides, but those V'y values you get in your examples are not the results from the displayed input values.
Many thanks for pointing that out. Please allow me to look at the numbers again. My thanks and regards, Jamshid
Excellent video, keep it up.
Thank you sir, you help a lots. When I confusing the PNA lied on the steel web what can I do next, and I found your course, many thank.
Nice to see you back again
Thanks Sir ! Can you share how to design girder bridge next video. Thanks So Much !!!
Greetings, Many thanks for the comment. Bridges are really not my expertise, but I will do my best, Sincerely, Jamshid
Thank you sir, I'm from Vietnam and I'm very happy to watch your video. Hope you can share more. Thanks so much !!!
hi. 6.27-5.5=.77 not 1.27
This is the best video to explain the composite beam design ,Really thank you Jamshid for this
Dear Mostafa, Thanks you for your kind words, Best regards, Jamshid
Hope to see more of your videos they are all super helpful!
Greetings, Many thanks for the comment, Best regards, Jamshid
Thanks for your theoretical approach designs..
Greetings, Many thanks for the comment, Best regards, Jamshid
سلام اگر به زبان فارسی ارائه بدهید فکر کنم فالور شما بیش تر بشه و افراد بیشتری استفاده کنند با تشکر فراوان
Greetings, Many thanks for the comment, I have tried to have a Farsi version, however, I am not sure I know all the Farsi equivalent for technical terms. But I will do my best. With my regards, Jamshid
demasiado bueno!
Great design tutorial… Liked and subscribed. Thank you for making this video.
Greetings, Many thanks for the comment, Best regards, Jamshid
Thank you for explaining about composite beams in detail. I have a doubt, in the case of Cs < Cflange, how Y2 = hf + t/2 ? shouldn't it be hr + t/2 if profile ribs are provided ?
Greetings, Many thanks for the comment, please allow me to look into your point. Best regards, Jamshid
This is great, thank you!
Greetings, Many thanks for the comment, Best regards, Jamshid
I have a question, we considered Cf = min of (As*Fy & 0.85 f'c*t*b) this means that the full composite action will occur when the section is able to develop its full plastic strength (compact section). Given the web is noncompact, the section strength is already limited to the yielding moment not the plastic moment. So, why do we reduce the transformed elastic modulus.
Greetings, Many thanks for the comment, please allow me to look into your point. Best regards, Jamshid
Thank you. wonderful video
Greetings, Many thanks for the comment, Best regards, Jamshid
kindly share lecture in pdf if possible. amazing lecture.
Greetings, Many thanks for the comment, I tried to share the pdf, but somehow, it did not go through. I will keep on trying. Best regards, Jamshid
I think your equation for A(l) min is using the wrong p value - you show pcp but code says to use ph on slide 32.
Greetings, Many thanks for the comment, please allow me to look into your point. Best regards, Jamshid
Thank you! Clearly spoken and well-illustrated. Great run through of AISC Composit beam analysis / design. Rare someone checks their own work.
Dear Ryan, Many thanks for the comment. It is very much appreciated. Regards, Jamshid
Best video on this topic that I have found online. Thanks
Greetings, Many thanks for the comment and kind words, best regards, Jamshid
Thank you sir. you made it very simple.
Greetings, Many thanks for the comment and kind words, best regards, Jamshid
Thank you sir. your videos are really useful and direct to the point. please keep making more videos.
Greetings, Many thanks for the comment and kind words, best regards, Jamshid
this is all good...however....I have seen not design ....of throughout bolts with a backing plate... I have a Simpson strong wall sitting on existing footing...my best option to transfer the loads to foundation is to drive the bolts through the 18"thk. concrete and provide a backing plate.... the Simpson wall is 4" wide with 1"diam. rod....so...the distance to one edge is 2"... I could pour / epoxy new concrete...but...that would not make any difference...there are not edge distance issues on the long side... any suggestion...or...can you address an example for such conditions
Greetings, Many thanks for the comment, please allow me to look into your point. I will work a problem dealing with base plate design (whenever, I get some free time), Best regards, Jamshid
I clicked on this video for a refresher and as soon as I heard your voice, I knew I had heard it before! Lo and behold, my old college professor, Professor Mohammadi, created the video! Its like being in class all over again :) Thanks for the refresher and hope you are doing well!
Dear Roxanne, So nice to hear from you. Hope all is well - and thank you for the kind words and the comment, Best wishes, Jamshid Mohammadi
Muchas gracias por compartir la lección Thank you very much for sharing
Greetings, Many thanks for the comment and kind words. Best regards, Jamshid
thank you sir. more power
Greetings, Many thanks for the comment and kind words. Best regards, Jamshid
I wish I get all the videos in sequence. Lot's of subject. Thank you
Greetings, Many thanks for the comment, good point regarding sequence, I will try. Best regards, Jamshid
@@jamshid50 thank you sir
Can I have the file explained in the video
Greetings, Many thanks for the comment - I will see what I can do regarding files in the video. Best regards, Jamshid
Thank you for the video. What about checking the adjacent slab to which the angle is bolted to?
Greetings, Many thanks for the comment and kind words, yes - you need to check the adjacent slab for its design. I will do research to find out whether anything special we must do. Best regards, Jamshid
Awesome video and explanation sir. Thanks.
Wonderful presentation! Thank you gor such a clear & detail explanation of a steel lintel design.
Greetings, Many thanks for the comment and kind words. Best regards, Jamshid
Very knowledgeable video. Thanks Mohammad
Greetings, Many thanks for the comment and kind words. Best regards, Jamshid
Brilliant, can you follow the same process for the design of rock anchor bolts? Also are the factors that are being applied the same if you are using metric units? Thank you.
Greetings, Many thanks for the comment and kind words, not sure about rock anchor bolts. ACI has SI equivallent for the equations. Best regards, Jamshid
thank you very much for the video!!
Greetings, Many thanks for the comment and kind words. Best regards, Jamshid
Hi, thanks for the lesson, on example problem 1, 12:20, the check is done at the bottom of the wall, but additional checks should be done at heights above the bottom of the wall where tension could be developed, correct?
Dear JC, Very good point - I do not expect a section above the bottom become critical. Nevertheless, it is a good idea to do the check, especially if there you expect the weight of the wall above the section is not enough to compensate for tension. Best regards, Jamshid
Can you please explain which table in AISC are you referring to for finding the lever arm for different angles?
Dear Komaldeep, Than you for watching my lesson. This table is usually at the bottom of the last page for angle properties (Table 1-7). I use the 13th Edition (2005) and it is at the bottom of Page 1-46 in Table 1-7. Sincerely, Jamshid
@@jamshid50 Hello Jamshid. The Table 1-7 in AISC 15th edition has the Y_bar value of 1.77" instead of 3" you used (for L6x6x3/4). Can you please clarify on this?
Hi Jamshid Thank you very much for your lecture, Can you please share it with me the slides please let me know your preferred method for sending out Thanks again
Many thanks Wael.
So thorough and clearly explained. Thank you!
is it according to AISC ?
This is according to ACI.
Love your videos Jamshid! Please continue making if they aren't taking too much time out of your life. I choose your engineering vids over anyone else's if you've already got one made over the subject. Thanks for the information you spread. You're awesome!
Dear Dylan, Thank you so much for the kind words. Best, Jamshid
Love it!!! Find out how your competition ranks better - Promo'SM !!!
Dear Ken, thank you for the kind words. It is much appreciated. Best, Jamshid