Engineering Center

What are the recommended repair procedures / products for Hilti HAC-V-T50 slab edge embed installed with voids between embed and concrete (photo attached)?

Is there a detail that can be provided for non-structural non rated walls: attaching CRC or Z clips for top track attachment over spray on fire proofing using washer pins? this detail has been used in the TI industry for ever but is being questioned by the architect.

we are doing a 5 story building with post tensioned floor slabs, perimeter stud walls and curtain walls. we are looking for UL approved fire stopping for studs going past slab, curtain wall going past slab and also for slab block outs for future conduits and piping that are up to 2' x 8' openings

We have a construction site that has about a year of construction to go. There were many penetrations in the two-hour floor for patient toilets, etc. It will be a while before they fill in these penetrations. The contractor stuffed some sort of insulation- probably not the correct type. How should I deal with firestop during c...

Completed Webinar didn't recieve the quiz link?

We're encountering an issue with how to install fire caulking on our project. We have (11) plumbing penetrations through 2 1/2 concrete in the ceiling above. Our project is on the 5th floor of a building, and the 6th floor has some plumbing fixtures being serviced by the plumbing in our ceiling space. Several of the penetratio...

Never received a link for the quiz after this course.

Section 3.1 of the strength design of the steel anchors is indicating using a phi (Strength Reduction Factor) for steel of 1.2. AISC and from what I have found in ACI indicates it should be 0.75. Where is this 1.2 factor coming from?

Hello. We have an existing WP 1052 1 HR rated wall (3 5/8 metal stud w/ 1 layer of gyp on one side and 2 layers of gyp on the other side) between classroom spaces. New audio visual electrical devices will be installed on both sides. The contractor is asking whether it is acceptable to install back to back electrical boxes with...

We have a project where the basement-to-first-floor above interface needs to achieve a 2-hour fire ratings. The floor assembly is a 2 steel deck with 3 concrete topping, supported by wide flange beams bearing on concrete foundation walls. We received a product submittal for using Hilti Fire Finish 120+ CFP-SP Steel protectio...