Fire Resistance

Two Hour Assembly Ul Number

Question: 

We have a local builder wishing to use floor trusses with a 2-hour assembly. I have shown him the 2-hour design on pages 17-27 of the second edition of SBCA’s Metal Plate Connected Wood Truss Handbook. Is this assembly UL approved? If so, what is the design number?

FRT Lumber Use in Type III-A Buildings - Educational Program

Many factors go into classifying buildings. Each type will have different allowable height, allowable number of stories and allowable area limitations based on the classification. This educational program will focus on Type III-A building construction using fire retardant treated wood (FRTW).

Single Membrane Floor Protection - Educational Program

This presentation provides information on the use of gypsum wallboard in single membrane floor protection.

Fire-Retardant Treated Lumber Use: Type III-A Buildings

Many factors go into classifying buildings. Each type will have different allowable height, allowable number of stories and allowable area limitations based on the classification. This report will focus on Type III-A building construction using fire retardant treated wood (FRTW).

Fire Retardants and Truss Design - Educational Program

This presentation provides information and analysis of fire retardant-treated wood and metal plate connected wood truss designs.

Fire Retardants and Truss Design

Depending on the type of fire-retardant treatment (FRT) used, materials may require a change in design values and reduction in connector capacity. This report intends on providing a clear perspective of interiror FRT wood used in Truss designs.

Fire Endurance Calculation for Wood Truss Structural Framing Systems: 2-Hour Assembly

Fire endurance ratings may be mandated by code for many assemblies in both floor and roof framing systems. This Research Report discusses methodologies to calculate 2-hour fire endurances of a given assembly.

Sprinkler Systems and Wood Trusses

The goal of this Research Report is to assist in designing safe buildings economically, especially when sprinkler systems are required or desired in the design.

Fire Resistance Rated Truss Assemblies

A fire endurance rating may be mandated by code for many of the applications where trusses could be used in floor/ceiling, roof/ceiling or in attic separation applications. This Research Report discusses 5 different methods for determining fire resistance.