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Thursday, April 3, 2025
SBCA Knowledge Center
Alternate Nailing Patterns TF No. 1001
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?
Thursday, April 3, 2025
SBCA Knowledge Center
Roof Truss Nailing with Hurricane Clips TF No. 1003
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?
Thursday, April 3, 2025
SBCA Knowledge Center
Attachment of Scissors Trusses TF No. 1004
What is the correct method of attaching scissors trusses to the top plate? I read recently in a trade magazine that this type of truss should be toe-nailed on one end and attached with slotted clips on the other end.
Thursday, April 3, 2025
SBCA Knowledge Center
Scissors Truss Diagonal Bracing TF No. 1042
We are finding it difficult to design permanent diagonal bracing for scissors trusses. The truss is often only a few feet in depth, which does not provide adequate room for diagonal bracing.
Thursday, April 3, 2025
SBCA Knowledge Center
Trusses Exposed to the Elements TF No. 1047
We are having a house built and on a recent visit we brought along a friend who builds houses for a living. He noticed that the trusses were wet and a bit moldy. The wood seemed warped, brown, and had white splotches on it.
Thursday, April 3, 2025
SBCA Knowledge Center
Temporary Bracing Documents TF No. 1049
Is it common practice for the supplier/distributor of a truss to provide a publication regarding temporary bracing with the delivery of the material?
Thursday, April 3, 2025
SBCA Knowledge Center
Moisture Content Equilibrium and Truss Movement TF No. 1057
How long does it take the moisture content to stabilize in a wood truss? I live in southern California. Also, how much deflection should be expected in a scissors truss over a partition wall?
Thursday, April 3, 2025
SBCA Knowledge Center
Transforming Attic into Living Space TF No. 1076
We are looking into developing the attic space above our garage into a media room. The garage is attached to the home and we would enter this area from the living room.
Thursday, April 3, 2025
SBCA Knowledge Center
Deck Ledger Boards TF No. 1078
Is it possible to attach deck ledger boards to the ends of floor trusses? If not, are there any modifications that would make this possible?
Thursday, April 3, 2025
SBCA Knowledge Center
In Floor Radiant Heat TF No. 1079
Do you have any information on the use of in-floor radiant heat with 4x2 open-web floor trusses? Are there any adverse effects to the lumber as a result of moisture build up?
Thursday, April 3, 2025
SBCA Knowledge Center