Roof Truss Rigid Ceiling Bracing

Bracing is allowed in lieu of rigid ceiling elsewhere in the house.

Roof truss rigid ceiling bracing.

Now let s talk about metal plate connected roof trusses. The code specifies specific information to be provided on the truss drawings requires that bracing be. Be aware that the irc provisions for trusses are much more extensive than what s been seen in the codes in the past. The plasterboard should be a minimum thickness of 9 5mm for up to 450mm truss centres or 12 5mm for up to 600mm truss centres.

They are so common in construction today as to be almost invisible. Where a ceiling is less rigid than plasterboard or omitted completely extra bracing may be required at ceiling level. This brace needs to be far enough up the trusses to provide headroom and still provide support for the trusses. Diagonal and longitudinal bracing should be provided at rafter level this may be omitted where rigid sarking boards are used e g.

Chipboard plywood or osb which are fixed to each trussed rafter with 3mm x 50mm galvanised round wire nails at 200mm spacing. Nail braces vertically every 4 feet along the top and bottom of a gable truss. Install 2x4s at a 45 degree angle. Use a t brace to support the truss vertically.

Lifting trusses higher than one story may require. Turn the truss upside down and place on corner on the roof surface. F all bracing members should be a minimum size of 22mm by 97mm and free from. This is where a high pitched roof is necessary.

2 by 4 inch pieces of lumber are attached from each end of this brace to each ceiling joist perpendicular to the ceiling joist forming a wall and supporting each truss.