Could use a reality check. I'm a PE with 7 years of experience--4 in consulting and now 3 working for an owner/facility (edit)--all heavy industry. Just completed a civil engineering M.S. while working full time. I feel stuck growth and mentorship-wise at my current role. I enjoy learning and...
https://sites.google.com/view/steel-design-aid
Above is the link to a Google Site I put together for the AISC 360-22 steel design aid I developed for my civil engineering M.S. grad project over the last couple years. You are welcome to download, use, and share freely! The download links simply...
TLDR: Risa-3D calculates hp as a negative number anytime the PNA is within the compression flange of a singly symmetric beam cross-section. This causes a noncompact web and messes up flexure Section F4 equations, reducing bending strength. AISC 360-16 (or -22).
Risa support confirmed that the...
Over the last two years, I developed a steel beam-column design aid according to AISC 360-22 for my M.S. civil engineering non-thesis project. The design aid (built in Excel) can be used to analyze and design shapes with original, reduced/corroded, and reinforced/built-up section properties...
Assuming a typical flange plate moment connection of one beam connecting to a column flange:
When you draw your shear force diagram for web panel zone shear (AISC 360-16 J10.6), do you ever include the vertical shear demand from the beam into the web panel zone shear demand? Or can we safely...
I've read the other threads on eng-tips about this but could use some clarity on a couple things. Attached is an example I put together quickly--it's not a real structure.
1. When using Fig. 29.4-3 in ASCE 7-16, why does a larger ε=(solid area/gross area) ratio lead to a smaller Cf (and...
Wanted to give a heads up about a known limitation in RisaCalc. I checked with Risa support, and they confirmed this. They have a pending request to fix it or add a toggle feature.
According to ACI 318-19 Sect. 13.2.6.2, it's permissible to neglect the size effect factor (lambda_s) for footing...
Let me know if I should move this to the student section. I work full time at an industrial facility as an owner-structural engineer, but I'm also working on my M.S.C.E. part time. This post is technically about my plan B grad project, but I feel like it's relevant to any industrial structure...
I feel a bit ridiculous asking this, but I could use a sanity check.
Has anyone dealt with a situation where concrete form deck (non-composite) was ordered too short and one of the ends won't be able to bear on a support? Beams are 7 ft OC, but 13 ft form deck was ordered. I can provide a...
I have an interesting rail beam support / free body diagram situation that I'm struggling to wrap my head around. A little embarrassed to admit, but I could use some guidance. See attachment.
Location is an existing railcar unloading pocket for crushed rock. Rail is supported by W24x145 beams...
FYI--this is just meant to be a helpful thread; I don't have a question.
See attached MDOT report no. R-1529, which includes the 1930 Westergaard report, "Computation of Stresses in Bridge Slabs Due to Wheel Loads" in the appendix.
Additional links to the same report (for sake of redundancy)...
Does anyone know of a design resource or have experience designing corrugated structural plate used as a flume carrying fluid or slurry? See attached section of an existing structure. My goal is to determine the strength of an existing CSP used as a flume.
I found the 8th Ed. Structural Plate...
Looking for guidance on a few things below. See attached pdf. I'm analyzing an existing conveyor gallery and trying to apply belt tension correctly. My head and tail pulleys are supported outside the gallery (at a transfer tower and separate building, respectively) so I believe the gallery will...
See attached section view of a concrete wall. I'm studying an old foundation reinforcement drawing and seeing (I.F.) and (O.F.) next to the bar callouts. I'm fairly certain it's "inside face" and "outside face." Can someone confirm that? I haven't been able to find a cover sheet or table for...
I'm hoping to get some advice and a sanity check on a few things. In my spare time, I've been starting to plan repairs for the first level framing of my own 100+ year old home. For background, I'm a licensed structural engineer (PE not SE) with about 5 years experience in heavy industry. I work...
Attached is a photo showing some damage to the overhanging portion of a 4-ton S10x25.4 & C8x11.5 monorail beam, as well as a preliminary splice detail for a potential repair. I'm not sure how the bottom flange got damaged, but I caught it and need to do something about it. My initial thought was...
I'm having a corroded beam replaced and designed shoring to temporarily pick up two other beams that frame into the beam to be replaced. Contractor calls me--the shoring beam is in place but there is an unanticipated 3/4" - 7/8" gap between bottom of shoring beam and top of beams to be...
I'm designing reinforcement for an A36 W12x22 with 25-75% section loss due to corrosion on its top flange and web. The W12 is a strut in a braced frame with about 20 kip axial and is also picking up some floor loads with 1.25 ft trib width. Prior to corrosion, the beam is at about 32% bending &...
Curious if anybody has had this issue (and hopefully found a solution)? I've imported DXF to Risa-3D multiple times and usually have this minor but annoying issue. Basically, most but not all of my linework from CAD gets imported into Risa. Several lines are missing and some end up in random...
Good Evening,
I'm a long-time reader and first time poster. This is a great forum. I'm a structural EIT with a little over four years of experience. I started in consulting (mostly heavy industry work) but switched to the client side working at a mine less than a year ago. I'm the only...
