Skip header and navigation

1 records – page 1 of 1.

Development of design values for hem-fir cross-laminated timber

https://library.fpinnovations.ca/en/permalink/fpipub44204
Author
Pirvu, Ciprian
Date
March 2015
Material Type
Research report
Field
Sustainable Construction
Author
Pirvu, Ciprian
Date
March 2015
Material Type
Research report
Physical Description
33 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Building Systems
Subject
British Columbia
Laminate product
Standards
Tsuga Heterophylla
Design
Series Number
BC Coastal Forest Industry
Language
English
Abstract
The North American product standard for performance-rated cross-laminated timber (CLT), ANSI/APA PRG 320, was published in 2012. The standard recognizes the use of all major Canadian and US softwood species groups for CLT manufacturing and provides design properties for specific CLT layups with visually graded and E-rated/MSR laminations. While design properties for CLT layups with Spruce-Pine-Fir and Douglas fir-Larch laminations are specified in the current standard, no design properties are indicated for CLT layups with Hem-Fir laminations. Design properties for two proposed CLT grades manufactured with Hem-Fir lumber were developed. These include a CLT layup with visually graded laminations and another layup with E-rated/MSR laminations. Design properties for these two CLT layups were calculated separately for use in Canada and the US. Supporting information for the addition of design properties for Hem-Fir grades to the CLT product standard was generated. Recommended amendments to the CLT product standard include durability and wood failure requirements of bondlines, and design properties for Hem-Fir layups.
Documents
Less detail