Installation Best Practices

Question: 

Are there any trusses that are supported strictly by the wood itself without any mechanical connections such as brackets?

Question: 

Is it common practice for the supplier/distributor of a truss to provide a publication regarding temporary bracing with the delivery of the material?

Question: 

I almost always see wood trusses erected with no stability bracing at points of support. It seems to me that common sense and section 3.3.3.4 of The American Wood Council’s National Design Specification for Wood Construction (NDS) require that lateral support be provided at points of bearing. Plywood decking doesn't provide any more restraint for a wood truss than it does for a roof joist. I doubt if it was a concern with short span trusses having 4 in.

Question: 

I am thinking of using wood trusses for the roofing/ceiling structural systems on some houses I shall build. I remember, though, an engineer/volunteer fireman commenting back in 1989 that the connector plates are prone to expand and pop off, early on in a fire, causing catastrophic structural failure. Was this the case, and if so, has this problem been corrected?

Question: 

I have been hired by an insurance company to determine the extent of damage to roof trusses exposed to fire. How much fire damage compromises the structural integrity of the truss?

Question: 

If you use hurricane clips to secure roof trusses from uplift, are you allowed to use fewer than the typical three nails in the bearing heel of the roof truss? I am concerned because we want to do the right fastening schedule, but three nails in addition to the hurricane clip splits the wood. What is the standard recommendation?

SBCA has developed an online series of best practice design and installation guides on a wide variety of topics.

 

The worth of one’s efforts is sometimes a difficult thing to communicate to others, whether they be customers, employees or, in SBCA’s case, members. It helps to have a concrete example that illustrates the value your work provides.

 

Thank you to everyone who took time to comment on the new look and feel of the January/February issue of SBC Magazine.

  • CMs engaged in NFC membership de-velopment efforts will find their work rewarded with better organized, safer, more effective and more reliable framing crews.
  • Framers engaged in NFC will learn component installation best practices from other framers, with the goal of creating more efficient, safe and profitable framing outcomes.
  • By actively growing awareness of and membership in NFC, CMs will expand their framing community connections and naturally expand market share and revenue growth.