Hello everyone,
I am developing the seismic forces on a ground-supported, mechanically anchored water storage tank. I am currently at Section 13.2.9.2 where I calculate the impulse design acceleration (Ai) and the convective design acceleration (Ac). I noticed that equation 13-18 for (Ac) asks...
Hello All!
A customer wants me to check an existing equipment skid for operating load cases and a hoisting and rigging load case. This post is about the hoisting and rigging load case only and the application of ASME BTH-1.
The equipment skid is comprised of various pumps, compressors, pipes...
Hello All,
I have an 8' x 8' platform I am designing with 6061-T6 aluminum channels, square tube perimeter, and diamond floor plate. The platform is not designed with support posts. It will instead be lifted and placed onto an existing ledge support on all 4 sides, like a cover. The assembly...
Hello Everyone! I am a structural engineer and work for an engineering firm that is looking into providing detailing services for structural steel and concrete rebar. We are considering Tekla Structures. My firm would like to provide these extra services to projects we have already designed...
Hello everyone. I was wondering if I can get some guidance on a composite beam analysis task that I have. I have an existing steel beam (c. 1924 construction) that had shear connectors and a 5” concrete slab added to it during a renovation in 1981. I followed some design examples and referenced...
I am working on retaining wall structures (2 walls forming a containment area) where the load cases are dictated to be saturated soil to a level 3 ft. above the wall OR filled with water. I understand the soil pressures are calculated using Ra = 1/2 * ka * p.soil * g * H^2, where p.soil * g =...
Hello All,
I have a flat circular steel plate that has 2 point loads (in the form of lugs) spaced symmetrically and along the centerline of the circle. The edge is fixed along the circumference. I had searched through Roark's 6th Edition to find examples of how to analyze the stress on this but...
I'm wondering if someone could point me in the right direction. I'm designing a flat circular plate (fixed edges) with a uniform annular line load on it. I am using Roark's 6th Edition, Case No. 9b. I'm interested in calculating the bending moment at the center, bending moment at the outer edge...
I am having some trouble understanding how to apply Chapter Section H1.3 Doubly Symmetric Members in Single Axis Flexure and Compression. Below is my interpretation of that section. I could not find this section used in an example so I will provide some paremeters and my interpretation of what...
Please reference thread172-130886 titled "New AISC spec: compressive capacity for members with slender elements"
It was closed but I have a question about the same topic. The link to that thread is here: http://www.eng-tips.com/viewthread.cfm?qid=130886
I want to include Chapter section E7...
Hello,
I am developing a spreadsheet that will design shelf angles. Everywhere I looked pointed me to the same resource below:
"Economical Design of Shelf Angles," by R. H. R. Tide and N. V. Krogstad (1993, Proceedings of the Symposium on Masonry: Design and Construction, Problems and Repair...
This is my first post here so please bare with me. I didn't think this belonged in the Geotech forum because it's not soils that I am dealing with.
I have a retaining wall problem that I could use some guidance on. It's not a typical retaining wall that involves retaining soils. It is a wall...
