Steel

Today, the U.S. Department of Commerce announced its procedures for excluding products from the recently announced tariffs on steel and aluminum product imports.

On March 8, President Trump signed two proclamations to temporarily increase tariffs on imported steel by 25 percent and aluminum by 10 percent. The new tariffs will take effect March 23, but it’s currently unclear how long they will remain in place and which countries they will ultimately be imposed upon.

President Trump is anticipated to slap new tariffs on aluminum and steel later this week, or early next week. Some are wondering, will these be applied to everyone?

Rebuilding a historic church after a ruinous fire was a project not to be forgotten.

While steel consumers will likely continue to take a “wait and see” attitude, the findings the DOC emphasized in their report to the president indicate there may be future trade action to protect domestic producers.  President Trump has until April 11 to act on the DOC’s recommendations.

Question: 

I am trying to develop a guideline for my firefighters regarding initial fire attack in buildings with light-weight trusses. My concern is truss failure, especially when exposed to fire. Is there any information on failure time related to flame impingement? Any information about truss failure – especially in a fire condition would be helpful.

Question: 

Are there any published studies or guidelines on the fire rating of floor trusses built with 2x3 lumber?

Question: 

In a small scale multi-family residential project, I'd like to use a wood truss floor-ceiling assembly to achieve a one hour separation between units. I'd like to directly attach the drywall to the underside of the trusses & use the truss space for ducts & lighting (the floor above will be lightweight concrete on plywood sub-floor). UL assemblies do not seem to address the duct/light penetrations in such an assembly. Can I achieve a one-hour rating in such an assembly and how are penetrations addressed? Can the ducts in the truss space serve both units above and below?

Question: 

I am currently undertaking a project dealing with techniques and methods of joining structural timber members. Do you have any available information on timber connections like split rings and design software?

Question: 

Is a Class A fire rating (provided by our liquid spray-on fire retardant) acceptable in certain situations?