Most of the project I do satisfies the requirement for part 2 (Enclosed simple diaphragm low-rise buildings). I am trying to understand part 1 (enclosed and partially enclosed low-rise buildings) of ASCE 7-16 chapter 28 and have some confusion. I would appreciate any insights on this matter.
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Hi All,
How do we generate a load combination from the LC Generator that includes WLY in RISA 3D? We can define the WLY as a basic load case category but I cannot find any load combinator generator settings to bring the WLY as a part of load combination. I can do it for the WLX and WLZ but not...
Hi,
I am designing a small spire on top of a building in Guatemala. I am unfamiliar with the La Asociación Guatemalteca de Ingeniería Estructural y Sísmica (AGIES) code. I have the design criteria for the building but I am not familiar with the language (Maybe it's in Spanish). Does anyone have...
Hi Community,
I am working on a project designing the structural support system for an auditorium. The project involves steel structures to support the seating for gravity and lateral loads. So far, I have determined to use a Dead Load (20psf + concrete weight),and Live Load (60 psf). I think...
I am working on a Department of Housing and Urban Development (HUD)project where I need to design a 6 ft high concrete masonry unit (CMU) blast walls. The requirement of the blast wall (and its material) is as follows, "Thermal heat flux exposure threshold of 450 BTU/hr/ft2 for people in open...
Hi All,
I am learning to work with Masonry and am looking for good resources to keep going. I am looking to buy a good Masonry book to have it handy and also use it for my paper based SE preparation and exams. I have a couple of pdf books that I use. However, I would love to know if you guys...
Hi All,
I am analyzing a metal decking over OWSJ for higher wind uplift. The decks are attached to the supporting OWSJ with 5/8" puddle weld. In the past, I looked at few reports I found online and used the lowest capacity and they worked for my project. However, now I am working on a project...
Has anyone noticed the wind adjustment factor for 25 ft is not present in the Component and Cladding but is present in Main Wind Force Resisting System? Not a big difference but I wanted to share this information and ask if you think there is a deeper logic behind it? or may be as simple as the...
Hi All,
I am working on a project where an existing building is being modified. The mezzanine is being removed. This causes larger span of the 12" CMU(likely unreinforced) wall (for out of plane) and also puts the higher force on the upper roof diaphragm. For strengthening the CMU wall for...
Hi,
I am running into a problem while using RISA 3D 17.0. I would really appreciate your suggestions.
I have a cupola that is shipped in site in multiple parts (three) and are attached in the site with bolts. I have modeled all the parts in the same workspace. I want to solve only one part at...
Hi,
I need to design a base plate for attachment of a 2700# equipment to a concrete slab. I also have the operating loads(force and moment) which is greater than the lateral seismic force as it is a SDC B. I wanted to know how we can proceed with the design and have the questions as below:
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Hi,
I am trying to design a cupola/steeple. The cupola/steeple is made up of steel and aluminium trusses. These trusses will be covered externally with architectural cladding. I am using ASCE 7-16, Chapter 29 to design the steel/aluminum frame. I am confused as to if my structure will fall...
