Important Quality Checks During Each Stage of Truss Manufacturing Alpine Team Quality control starts before the first piece of lumber is set into motion. Every employee at each phase of component design and manufacturing plays a critical role to help avoid costly repairs, potential frustration, and additional workload. As an engineer that has seen many repairs, here are a... Read More December 2023 Issue #15293 Page 92
Installation Tolerances MiTek Staff Oftentimes, MiTek engineers are getting requests for repairs of trusses installed out of plumb. This is a common installation issue and has some allowable tolerances. Tolerance is critical for both a good roofline and effective bracing. Exceeded erection tolerance can cause overloading,... Read More December 2023 Issue #15293 Page 97
Design Connections: Reducing the Risk of Truss Collapse Geordie Secord Last month’s article, Preventing Truss Collapses, talks about some of the job site mistakes that can lead to truss collapses. I have no scientific data to back this up, but it is my belief that all truss collapses could be prevented by following proper lifting methods and bracing of the... Read More July 2023 Issue #15288 Page 84
Are You Providing Enough Information to Avert Failures? Glenn Traylor Recently, when a building owner started getting leaks in the roof and noticed unusual variations in the ceiling, I was asked to do an inspection to determine the best way to correct a deflection problem. Upon inspection, it was very evident that the roof trusses had not been installed correctly... Read More June 2023 Issue #15287 Page 37
Design Connections: Preventing Truss Collapses Geordie Secord Over the many years I’ve worked in the truss business, I’ve had the unfortunate experience of visiting numerous job sites where the trusses have collapsed. Without fail, every one of those collapses has been the direct result of improper bracing, improper hoisting, or a combination... Read More June 2023 Issue #15287
Bracing on Truss Design Drawings MiTek Staff Trusses are designed as individual components to resist the in-plane stresses resulting from the loads applied in the same in-plane direction. To resist out of plane forces, adequate bracing/restraint is required. In absence of designed temporary and permanent bracing plans, BCSI (Building... Read More April 2023 Issue #15285 Page 104
Construction Loading MiTek Staff Per BCSI-B4 (Building Component Safety Information): The term “construction loading” is typically used to describe Loads from workers and Building materials on unfinished structure, as, for example, when builders temporarily stack bundles of panel sheathing or gypsum board on... Read More November 2022 Issue #14280 Page 112
All Things Wood: Structural Design Topics in Wood Construction Course Frank Woeste After a three-year absence, Virginia Tech is offering its popular two-day course on topics related to wood construction. On May 17–18 in Blacksburg, VA, the Structural Design Topics in Wood Construction course will address wood truss design, in-service performance, and installation... Read More March 2022 Issue #14272 Page 90
Comments on “The Enduring Problem of Truss Partition Separation” Lecil Alexander When I saw the article on ceiling separation, The Enduring Problem of Truss Partition Separation, written by my friend Frank Woeste in the November issue of The Advertiser, I was excited to read it. As Frank writes, this problem has been around since there has been a metal plate connected wood... Read More December 2020 Issue #12257 Page 100
All Things Wood: The Enduring Problem of Truss Partition Separation Frank Woeste For more than 40 years, truss partition separation, often loosely referred to as “truss uplift,” has been a practical (and annoying) issue for homeowners and homebuilders. While it was first investigated at the field level and researched in the laboratory in the 1970s, an October... Read More November 2020 Issue #12256 Page 78