Engineering Center

It looks like the installation torque values for carbon KB-TZ2 1/2 and 5/8 anchors are not correct. The tech guide says 50 ft-lb for 1/2 dia. anchor, but it also shows 40 ft-lb for 5/8 dia. anchor. How does the larger dia. anchor require less installation torque?

I am seeking a UL-rated solution for protecting an I-beam that traverses a 2-hour fire-rated tunnel corridor. Specifically, I need guidance on the appropriate measures to safeguard the top of the beam to ensure compliance with fire safety standards.

Hello - Wondering if you have a through penetration firestop system for an 8-inch PVC pipe through a 1-hour rated fire partition. Fire partition is UL Des U305. The PVC pipe is for the roof overflow drain pipe. Thank you, Ryan Kremer

I'd like to request an Engineering Judgement for a Fire Rated Wall-to-Wall Joint. The condition would be at a 2 hour fire rated wall. We have an HSS 12x12x1/2 Steel Column (coated with intumescent Fire Resistant Paint) IN-LINE with a 12 ground face CMU wall. While I can't find a UL Assembly for this condition, I believe an Eng...

Need an approved penetration assembly for an existing steel bar joist penetrating a 1-hour rated gypsum board and steel stud partition wall. The roof decking is not rated and is an existing Tectum roof deck with bulb-tees at 32 o.c.

Can hilti anchor bolts be modified in length by cutting off a top piece to make them shorter

Cable System through penetration fire stop system for large diameter MC Feeder Cable AL. Approximately 3 inch od. Reference attached cut sheet for 500 MCM OD Cable

I have recently attended three Hilti webinars. I have received the certificates for all three. However, no instructor is listed for the courses. The NCEES tracking website that I use to keep track of my PDH's requires me to enter an instructor. Where can I find who the instructor was for Developments in Power-Actuated Technolo...

Looking for submittals.

Should the friction between base plate and the concrete be considered when designing the shear lug?