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I'm a structural engineer working for the department of defense. I am currently trying to predict the throw distance for pieces of a structure following an internal detonation of a munition. We have a 3 sided box with a ceiling. The box is made of steel panels which are welded to a steel...

Thanks for the help. I'm still not quite sure what I need to do to solve my problem, but I do know that I need to investigate further into my geotechnical report.

Hello all, I'm trying to prove that a foundation design is adequate for sliding for a soil having an effective friction (phi') of 37 degrees. Is the coefficient of friction (mhu) between the concrete and the soil equal to the tangent of the effictive friction (37 degrees)? I want to double...

I have recently learned that in many new residences being constructed the homes are not at all anchored to the foundation. There are no anchor bolt connections between the sill plate and the cmu stemwall. Additionally, stemwalls are not fully grouted or grouted at set intervals. Since these...

Sorry, but I don't know if those columns are designed to resist seismic. I am not the design engineer, but have been doing some inspecting and some thinking about possible solutions. There are around 12 columns that have this condition. All were designed with only 2 anchor bolts specified...

Question reponses as they came in - Anchor Bolts: 2 3/4" Dia. A325 Anchor Bolts Specified with 12" embedment, cast-in-place, 3000 psi concrete, spaced 5" apart on each side of a 4" tube column. (Note: contractor placed 4 anchor bolts in compliance with OSHA requirements) Obstructions: Just...

Thanks to COEngineer for the photo help! At last my post--- So, I am inspecting and advising for a job that my firm designed a couple years ago now. This is one of those jobs that was just never meant to be. The general contractor is now on his 4th concrete sub and I consistantly find...

sorry everyone, I was trying to post a picture and it didn't go so well.

Hello All! A college student I know was recently asking me a question about nomenclature that I was not sure I could clearly answer. I am hoping that you can provide me some guidance and a more logical explanation to provide him. What is the difference between a lbm and a slug and how do...

I like "Design of Reinforced Masonry Structures" by Narendra Taly, Ph.D,P.E. Published by McGraw Hill. It has all of the things you mentioned plus many more. It especially helped me during my first encounters with masonry because it explains the dimensions and reinforcing requirements very well.