Field Repairs & Alterations

What to do when bearing capacity is insufficient

Best practices for addressing truss alterations by plumbers

According to an online survey of component manufacturers (CMs), 96 percent of respondents indicated they have had a plumber damage or modify their products after installation.

Partition separation is not typically caused by truss uplift.

This article will briefly explore how these calls can impact a CM’s bottom line and a few ways in which CMs can proactively work with tradespeople to avoid such issues. Truss repairs can very easily turn a profitable job into a money losing project. The cost incurred with this type of repair goes beyond the price of the materials. Costs for determining the issue for repair, designing the repair, and implementing a repair solution shouldn’t get lost in your accounting books. 

The tables are intended as a practical tool to assist contractors in the selection of footing widths and the determination of the quantity of wood studs required for supporting the end reactions of beams, girders, and/or headers. 

Question: 

Is it possible to retrofit a standard rafter/joist style roof to a scissors truss configuration without replacing the existing construction?

Question: 

If you have the condition where you are out by the max tolerances of 1/2 in., how do you correct the situation? Do you shim the truss from the bottom? Shim from the top? I will assume you do not shave the truss off. What is the published corrective action for situations that cannot handle the variation in truss height?

Question: 

Some truss lumber repair nailing patterns call for 16d common nails. Most nail guns do not support 16d nails, but have an equivalent to a 12/10d nail. Is there a substitution guide or ESR report that could help us?

Question: 

Our home has 2x4 roof trusses spanning 25 ft. spaced 16 in. O.C. Currently, there is limited attic storage on a plywood subfloor on the bottom chords, accessed via a small hatch in a closet. We would like to install a fold-down attic stair with a rough opening size of 25.5 in. x 54 in., with the long dimension perpendicular to the trusses. This would mean cutting the bottom chords of three trusses to frame the opening. Is this possible?