How Should Defects Be Recorded When Inspecting a Critical Plate?
A critical plate is a plate with a Joint Stress Index of 80% or greater. The ANSI/TPI 1–2014 Standard stipulates that critical plate inspections must be conducted when completing the three inspections per station/per shift/per week requirement. On average, the standard requires one...
How Does a Fabricator Gain From a 3rd Party Audit?
When a 3rd party inspector inspects a licensed plant, what exactly are the auditors looking for? And what can the fabricator get from the experience?
What the inspection is NOT, and why that matters:
The part 1 audit of the in-house paperwork is not a grade on neatness. It’s an...
All Things Wood:
Addressing the Roof Truss Design Note: “Provide adequate drainage to prevent water ponding.”
The purpose of this article to examine the significance and implementation of a typical note that appears on metal plate connected roof-truss drawings when a top-chord-pitch of ¼:12 or less is specified by the Construction Documents. Three questions will be addressed:
What is the...
How Important is Angulation? Why is It Important?
Per ANSI/TPI 1–2014, National Design Standard for Metal Plate Connected Wood Truss Construction, plates should be installed within a 10 degree tolerance. So what happens when the plate is rotated and exceeds this requirement?
The simple answer is: the configuration and design of...
Are Roof and Floor Trusses the Only Components that Need a Quality Assurance Program?
Roof and floor trusses are important components that need special consideration to insure their correct manufacture. Components built to the IRC and IBC require the manufacturer to adhere to specific requirements. These requirements provide a blueprint to facilitate the manufacturing of a...
Errors in Substituting Dead Load for Live Load in Wood Design
Custom kitchens, with high-end appliances, granite countertops, and central islands, are becoming more and more prevalent in the home market today. These products and finishes are heavy and the dead loads from the central islands and/or cabinets positioned along interior...
All Things Wood:
Truss Lumber: Checking the Moisture Content
The lack of attention to the moisture content (MC) of lumber used in truss manufacturing can cause or contribute to in-service performance issues. Mr. Glenn Traylor’s fine article in the September issue of The Advertiser, “Does Your Lumber Have a Shelf Life?”, was greatly...
What is a Building Designer?
Generally, building design refers to the broadly based architectural, engineering, and technical applications to the design of buildings. Therefore, all building projects require the services of a building designer. Statutorily, the required credentials of a building’s designer vary from...
When Fashion Affects Structure—Floor Design Considerations for Preventing Tile and Stone Cracks
Two kinds of designers are involved in home construction—design professionals responsible for the structure and the interior-focused designers responsible for the final appearance. Although these roles can overlap, it is important for design professionals to be aware of in-service demands...
Do You Need 100% Inspected for Proper QA?
A process that requires the inspection of each individual unit or component received from a process or manufacturer is said to be “100 percent inspected.” When fabricators initially consider a quality program, this is what they imagine is necessary.
This 100% process, however, is...