Question of the Day:
Gable End Frame Connections and Bracing
I was asked recently why Component Manufacturers (CMs) do not provide the bracing details and holdowns for gable end frames like they do for the common trusses. The question got me thinking because the details are readily available, as are any mechanical connectors that might be needed to...
Code Report: Understanding Allowable Load Changes
The Simpson Strong-Tie® 2019–2020 Wood Construction Connectors catalog is the first in the industry with updated connector allowable load tables to meet the new ASTM test standards required by the 2015 and 2018 International Building Code® (IBC®). It is designed to...
A Case for Minimum Post Frame Truss Loads
In my career, I have done about everything imaginable when it comes to post frame (pole) building trusses. I have been blessed to have been able to spend a better portion of over two decades working within or owning prefabricated MPCWT (metal plate connected wood truss) manufacturing facilities....
The Missing Link – Addressing Roof Ponding by Designing with an HVAC Perspective
As discussed in last month’s article, “Addressing the Roof Truss Design Note: 'Provide adequate drainage to prevent water ponding.’,” by Frank Woeste and Scott Coffman, ponding is an issue not always addressed adequately.
Ponding is a design issue, a mishap, or an...
Code Corner: New Year, New Code Developments
Happy new year! A new year brings new developments on the Building Code front. A summary of relevant code activities follows.
With the end of 2018 and the start of 2019, the ICC Code Development Cycle for the 2021 I-Codes moves into its second year. The Group A cycle online...
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...
Questions Answered: Making Wood Connections Work for Two-Hour Fire Walls
In this article, Paul McEntee follows up on our July 25 webinar, Making Wood Connections Work for Two-Hour Fire Walls, by answering some of the interesting questions raised by attendees.
We presented an hour-long webinar recently about using fire wall hangers in Type III wood-frame buildings,...
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...
Still Using Lag Screws? Consider Self-Tapping Wood Screws Instead
Aram Khachadourian, P.E.
Lag screws are traditionally specified for many structural loads in wood construction. However, recent innovations in engineering for self-tapping wood screws have made them an increasingly popular, labor-saving alternative to lag screws. In the following, Aram Khachadourian, P.E., of Simpson...
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...