Engineering Center

I’m working on a gymnasium project for Catholic University. There’s an existing 2hr rated CMU wall. We removed an existing louver in the 2hr wall to run new piping through. Now we’re looking to fill in the void.  Is there an assembly you would defer to? Thanks.

I have a condition where a vertical bar in a masonry wall that is sitting on a spread footing was not provided. The simple solution is to provide an epoxy set rebar however, the problem is they already installed 4 course of the masonry wall. Is it possible to install a #4 epoxy set rebar into a concrete stem wall that's 32 awa...

We are looking for a sink drain pipe flange which penetrates the 1 rated floor/ceiling assembly at the floor. I found your tub flange assembly F-C-2204 and the The WC flange F-C-2203. Do you have another one for a smaller diameter pipe? Troy

We are looking at fastening unistrut members to cast iron subway tunnel lining.

What would be the minimum anchor to edge distance for this scenario? How are the new sections of concrete attached to the pre-existing concrete? Are there any steel reinforcements between the sections? - The pre-existing concrete is drilled and doweled with 12 (3 per side) #4 rebar to the new sections. The new concrete has 1 ...

we have an existing condition of an 8 CMU wall that we need to upgrade to a 2-hour rated partition. The CMU wall terminates with a raked bond beam that follows the slope of the metal roof above. There is a 3x3x 5/16 angle on the one side of the beam that aligns with the top of the steel joists and the other side is open. Th...

I found the following response to a question concerning the interface between SFRM beams and Intumescent costed column: Hello Carol, the UL listing you can use for the column is UL Y633. Since you have two fireproofing martials, one on the beam and potentially Hilti intumescent on the column you can apply Hilti intumescent to...

how long does it take for HIT-RE 500 to develop its full strength

I cannot access my anchor connection designs and I receive the error message attached below.

There are two posts that are marked in red. There is a connecting peace of steel that gets attached to those posts but it goes through a 2 hour fire rated wall. Keep in mind that the steel doesn't need to be fire proofed.