Engineering Center

Profis online program does not allow core drilling for cracked concrete. However, in my case the concrete will not be cracked at the time of drilling. It might have flexural cracks later, after full loading. Can you please explain whether this warning: "Wet holes, diamond core drilling and cracked concrete does not work togeth...

Please let me know if ASTM C834 is applicable to acoustical spray products.

Has the HSL-3-B anchor has been replaced by HSL-4-B? Documentation clarifying HSL-4-B has replaced the HSL-3-B does not appear to be available on the Hilti website. However a comparison of the respective product technical guides appears these are essentially the same anchor.

I am looking for a 1h rated floor penetration assembly for a floor sink installed in a concrete/metal deck floor system with spray fire proofing on the metal deck.  I found system F-A-1137, but system calls for iron pipe.  Our preference is to use PVC pipe.  Do you have a system like this using PVC pipe?  If not, can the iron ...

GC changed shaftwall construction to UL U408 wall assembly for exterior wall. There is an adjacent building next to this wall, so the exterior sheating is inaccessible from the outside. Since this is not a C-H stud, how should drywall joints be treated at the inaccessible outer layer?

I have a scenario where there are multiple conduit penetrations through a 2 hour assembly (not shaft wall - 2 layers rock both sides of wall) and I cannot access one side due to the conduit already being tied into an electrical panel with wire pulled through them. Is there a detail that shows how to fire rate these conduits fr...

I have a triangular base plate (for a 10-ft pylon) with 3 anchor bolts at 2-3/4" embedment on an exiting slab. We just found out that because of rebars and conduits in the slab, we can't have the required 2-3/4" embedment at all 3 locations. One of the anchors will have to have a 1-1/2" embedment. Hilti does not have data on...

Can you use FSONE with Putty pads to fill gaps?

Due to the size of the slab (8 ft thick), there is a construction joint 2 ft from the top. I have to put anchor to hold down a tank. and the minimum embedment is 775mm. The anchor will be passing throught the constriction joint. Is there any problem with this.

TORQUE SETTING, 1" X 8" SET IN HIT RE 500 V3