I'm working on a prefabricated room for a nuclear facility in a relatively low seismic area in the lower 48. At least per ASCE 7-05. The specs indicated using a Safe Shutdown Earthquake loads with spectral accelerations as follows:
Horizontal = 3.5154g, Vertical = 1.179g.
This is where my...
I'm working on an aluminum sidewalk canopy that is 7ft wide x 102ft long. The building is approximately 122ft x 116ft and the canopy runs parallel with the 116ft side. The canopy is supported by the structure on one side and column supported on the other. The eave height of the building is...
Is there an appropriate time to neglect snow drift on a fabric awning? I'm looking at an aluminum frame supporting a fabric awning attached to the side of a restaurant. Per the code, there is a 42 psf snow drift (10psf ground). I don't really believe the fabric awning can support this load...
I'm working on a project now where the welding inspector told us that attaching the shear studs to an edge angle isn't allowed. The perimeter beam has a six in flange and the edge angle is a L6x6x5/16. The angle totally covers the beam flange and is butt welded on each side. It's an awkward...
I don't understand the thought process of splitting the seismic load effect "E" into two components (Eh and Ev). I have calculated the Eh and Ev components but am trying to grasp how to use them in the load combinations.
In my structure, I have assumed the Ev to be negative (uplift). No...
I am currently engaged in projects requiring engineering calculations for self-drilling screw connections into light gauge steel. The connections are currently being designed for uplift (tension) and shear loads. The 2001 AISI design manual does a great job explaining the different capacity...
Quick question. Does Chapter 7.12 (ACI 318) apply to all flexural members for temp and shrinkage steel? It uses 'structural slab' and says it does not apply to slabs on grade, but I wasn't sure about a cantilevered retaining wall.
Thanks
I have a client who wants some calculations for a drywall soffit. The soffit will hang from a metal deck roof and span approximately 30ft over some shelving. My first thought is just put it up. It seems as if the drywall will act like a deep beam against the studs and make the span, but I'm...
