MiTek Staff

Information Needed to Provide Efficient Truss Design Repairs

MiTek Staff

Metal plate connected roof and floor trusses are used widely in residential single family, multi- family, commercial, and agricultural construction. They provide design flexibility, span greater distances than traditional “stick framing,” and allow faster erection of the roof system...

#15292 Cover image
November 2023
Issue #15292
Page 97
MiTek Staff

Flat Top Chord Bracing

MiTek Staff

Top chords are usually braced by roof sheathing. Roof sheathing provides effective lateral bracing when nailed directly to the top chord. In cases where roof sheathing cannot be directly applied to the top chord, purlins are used to prevent lateral buckling of truss top chords. The Truss...

#15289 Cover image
August 2023
Issue #15289
Page 96
MiTek Staff

Ground Snow vs. Flat Roof Snow

MiTek Staff

MiTek Engineering software gives you two options to input snow load – Ground Snow and Roof Snow (flat roof snow). What is the difference between ground snow and flat roof snow? Ground snow load, pg, is obtained directly from the American Society of Civil Engineers Standard (ASCE 7)...

#15288 Cover image
July 2023
Issue #15288
Page 96
Tuomo Poutanen, PhD

Glued Roof Trusses

Tuomo Poutanen

In my previous article, The Evolution of Glued Trussed Joists, in the August 2021 issue, I explain that glued trusses have potential in floors. The new G-joist has high resistance. The chord shear failure is eliminated as the web finger punches the chord. The web-chord glue area is big. The mean...

#15285 Cover image
April 2023
Issue #15285
Page 94
MiTek Staff

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...

#14280 Cover image
November 2022
Issue #14280
Page 112
Glenn Traylor

Are You Counting Your Teeth Correctly?

Glenn Traylor

On occasion, we are required to utilize a detailed tooth count to qualify a connection on a metal plate connected wood truss. Fortunately, we have several tools that can assist us. My June article, “Which is Better: Plate Placement Method or Tooth Count Method?”, includes a...

#14279 Cover image
October 2022
Issue #14279
Page 33
Geordie Secord

Design Connections: Design: Software Power or Brain Power?

Geordie Secord

I sometimes wonder if I am at risk of becoming the truss designer version of the grouchy old man that sits on the front porch yelling at the neighborhood kids to “get off my lawn.” When I hear some newer designer criticize the limitations of today’s truss layout and design...

#14278 Cover image
September 2022
Issue #14278
Page 86
Tracy Roe

Design Department Capacity

Tracy Roe

With component lead times being extremely long in our industry today, every manufacturer is scrambling to increase capacity. Some need more space, some need additional equipment, some simply need a labor force that is willing to work all day every day. Mostly, these needs can be met with capital...

#14276 Cover image
July 2022
Issue #14276
Page 46
Glenn Traylor

Which is Better: Plate Placement Method or Tooth Count Method?

Glenn Traylor

To answer the question of which is the better method, we should start with a little background. 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...

#14275 Cover image
June 2022
Issue #14275
Page 39
Tracy Roe

Seamless Communication

Tracy Roe

We’ve heard the statement forever: communication is key. Communication lies at the core of every successful relationship, team, and business. Our industry remains extremely strong and demand for metal plate connected wood trusses is as high as ever. Oftentimes when demand gets high and we...

#14275 Cover image
June 2022
Issue #14275
Page 46
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