Scott D. Coffman, P.E., SECB

Errors in Substituting Dead Load for Live Load in Wood Design

Scott Coffman

Introduction 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...

#10231 Cover image
October 2018
Issue #10231
Page 48
Glenn Traylor

What is the Most Common Fabrication Issue That Impacts a Truss?

Glenn Traylor

The most common problem typically encountered is excessive defects in the plated area of the truss. While some defects are acceptable in the plated area, the degree of defects depends on the actual joint situation and forces at the joint. Connector sizes are controlled by design, handling,...

#10229 Cover image
August 2018
Issue #10229
Page 32
Frank Woeste. P.E.

When Fashion Affects Structure—Floor Design Considerations for Preventing Tile and Stone Cracks

Frank Woeste

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...

#10227 Cover image
June 2018
Issue #10227
Page 60
Glenn Traylor

So What is the Big Deal About Member to Member Gaps?

Glenn Traylor

Compliance with ANSI/TPI 1–2014 requires maintaining member to member gaps at less than 1/4 inch. An exception would be for floor truss chord splices where the limit is 1/16 inch. Let us take a look at two different situations, the first being a roof truss and the second being a 4 x 2...

#10215 Cover image
June 2017
Issue #10215
Page 30
Glenn Traylor

When is a Member Gap Not a Member Gap?

Glenn Traylor

Building trusses with tight member to member joints insures accurate truss profiles and consistency between setups. The member to member gaps are limited to 1/8” and 1/16” on floor truss chord splices. This requirement is primarily concerned with compressive joint situations where...

#09204 Cover image
July 2016
Issue #09204
Page 27
Glenn Traylor

How Important is Plate Placement Relative to Floor Truss Chords?

Glenn Traylor

Often component manufacturer facilities’ owners and managers state how floor truss fabrication is generally more straight forward and simpler to train when compared to roof truss fabrication. The guidelines are easy to follow and drawings generally do not require special rotation or...

#09203 Cover image
June 2016
Issue #09203
Page 28
Glenn Traylor

Is There a Reduction for Plating in a Previously Plated Area?

Glenn Traylor

When a connector has been installed on a joint and it is determined the plate does not meet the requirements of the design standard, then the truss designer has to make a decision. The connection can be repaired by removing the plate, or there may be a way to facilitate the repair leaving the...

#09202 Cover image
May 2016
Issue #09202
Page 26
Glenn Traylor

When Do You Cull Lumber at the Table?

Glenn Traylor

From worst-case scenarios to less obvious examples, do you have general guidelines that will help you make informed decisions? For example, when faced with lumber defects on the table, do you know how the builders in your plant will proceed? More importantly, are they being supplied with the...

#09199 Cover image
February 2016
Issue #09199
Page 32

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