Engineering Center

Is there a system for a metal conduit (~1/4 dia.) entering one side of a 16 gauge. metal fire door frame through a 1/2 hole?

I'm working on a lot of projects that have recently begun to include Aeroflex EPDM insulation for copper pipes. Two requests: Immediate: We have W-L-1001 in our approved drawings, but will need a similar UL detail that includes EPDM insulation. Can you advise on the right UL detail to use? Later: In the firestop selector, can ...

Do you have any guidance, procedures or instructions for installing adhesive anchors when developing a bar that is long (i.e. 18 to 36 inches) and with a large rebar embedment? Do you have extra long mixing nozzles? Or, how do installers typically get the adhesive to the bottom of hole per the instructions?

Do you do in-office Lunch and Learns? We have some EIT engineers and Architects who want to get more familiar with the products and when to use them (more as an introduction). We could also use some printed, updated materials for the rest of us folks who like to have a paper catalog.

We have a contractor doing a field fix for one of our connections and our delegated connection designer is proposing using a KB-TZ2 Wedge Anchor installed in the face of a concrete wall. However their connection is showing connecting a threaded rod to the TZ2 using a coupling nut. I don't know if there is enough room to keep ...

What would be the equivalent of a WL-1054 be on a 1 hour wall for a sleeved application such as a WL-1056 but for a 1 hour rated wall

ACI Chapter 17 says concrete has to be at least 21 days old, but the conditions of use in Hilti ICC-ESR's says the concrete needs to reach it's minimum design strength. Which should I go by?

Can the epoxy used to for threaded rod anchors cause insulation in a precast panel to start on fire? Or melt?

We have CFS-S SIL GG (red) installed at pipe penetrations through rated walls (white). After substantial completion, we noticed that this sealant cannot be painted over. What would you recommend we do if we want to paint over it at this stage? Also, for future projects, which firestop sealant would you recommend that is painta...

I need a detail for a 1 CPVC pipe that is insulated with closed cell foam penetrating a one hour GWB wall.