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All, Good afternoon. I have a precast concrete question regarding a podium style (precast beams, column, and hollow core) for two stories with stick framing above. One column, in particular, was cast too long; the precaster would like to salvage it if at all possible. The column needs to be...

Hello All, I have an insulated precast wall panel with a cast-in-angle with studs to provide support for roof joists (see attached detail). The angle is 6x6x1/2 and is subjected to 11.6k of ultimate shear force. I am trying to determine the bending/thickness of the cont. angle. The joist...

All, I have a precast client that is looking into ways to optimize the setup of their inverted tee beam process. Currently one of the most labor-intensive processes is stringing each strand through a preassembled cage of stirrups. The client is asking if they can make the stirrups as...

Hello All, A precast manufacturer is seeing some longitudinal hairline cracks coming from the head (top) of the panel extending down about 12"-24". These hairline cracks appear on most of their panels for this specific project (maybe 60-75% of panels). The panel composition is 3" wythe of...

All, I am designing a repair for a precast concrete manufacturing company where a cast in embed plate was left out during production. The panel composition is 4" concrete wythe - 4" EPS insulation - 4" concrete wythe (total 12" precast panel). Panel is designed as a composite panel with wythe...

Hello All, I have a design question for those familiar with precast and steel connections. I am designing the precast concrete for a 2 story podium style mixed use building. On the exterior of the building I have some precast columns which are supporting two wide flange steel beams. These...

Hello all, I have a grand stand bleacher project with an existing 3" concrete slab, the details are showing post installed anchors to secure the angle frame bleacher. I am running Hilti Profis software and it seems like I can't get a structural anchor to work with less than 3.25" slab. Any...

All, I am designing the precast podium level of a commercial building (underground parking - retail - apartment living). The EOR has provide two types of lateral loads at the foundation level; 1.) Out-of-Plane Earth Pressure + Soil Surcharge & 2.) In-plane wind shear loads. The foundation...

All, I am trying to set up a Mathcad Spreadsheet for precast header design. I am currently checking my angle moment capacity and LTB. While doing so I am trying to find r(sub Z) which takes the square root(Iz/AL). For some reason this equation is spitting out a matrix. Then when I go to...

All, Is there any FEA Program one would recommend for steel hanger/header design for precast hollow core? I am trying to figure out the load paths through these headers so I can properly design one. Any input would be greatly appreciated. Thanks in advance, jReck

All, I work for a precast firm that produces hollow core. I was wondering what programs would be beneficial for steel embed design. Typically for these embeds we ask for the lateral loads acting on the building and we design the embeds accordingly by hand. Our typical embed is a 4x6x3/8 plate...

All, I am a recent grad student with a Bachelors Degree in Civil Engineering. I have passed my EIT exam and I am currently working under a structural engineer. My question is moving forward with my licenses and exams, is it even worth it to take my PE exam? I currently live in the state of...

All, What is the minimum return distance for a typical fillet weld? To set up my exact detail: -I have precast hollow core bearing on a concrete foundation wall -The precast will have steel plates embedded in the bottom -We will bolt a flat steel plate to the inside face of the foundation...

All, My design firm is looking at switching between basic excel to Mathcad to preform our basic calculations. My big question is can Mathcad automatically choose functions for you. For instance, can you have a design worksheet set up for let's say Steel angle design; where you input all the...

All, My company is currently looking into a BIM software for our design team. Does anyone have any good suggestions or input on some BIM softwares currently out there? We are currently looking into products such as Tekla, Rivet, etc. Any input would be greatly appreciated! Thanks in...

Has anyone ever heard of precast concrete making a popping noise? I have read one other post on this forum and was not sure if they ever got to the bottom of the issue. I am an engineer at a precast concrete company and one of our customers called and mentioned 3-4 loud popping noises. He was...