Solid Laminated Roof Diaphragm

It is designed of two to five strips of kiln dried wood glued with an exterior waterproof adhesive to form a glulam roof decking.

Solid laminated roof diaphragm. Does anyone have experience using tongue and groove decking for roof sheathing. Buildings that have primary wood frames with no lateral rigidity columns simply supported at top and bottom depend entirely on the diaphragm shear wall system for. Design and detailing of plywood floor and roof diaphragms. Or thicker or laminated decking.

Minimum design loads for. Inherent is the assumption that the sheathing nail will have a penetration of not less than 10 diameters. The ibc icc 2003a and the af pa 2005 permit wood structural panel diaphragm sheathing to be fastened over solid lumber planking or laminated decking using full tabulated values for new construction. The roof diaphragm functions as a horizontal medium through which lateral forces are collected and redistributed to each participating vertical element wood frame shear walls.

A custom steel sculpted universal connector at the top of the glulam support columns was developed to accommodate the constantly varying roof geometry. Goodfellow also offers solid wood decking species in red pine red cedar spruce and larch. Nail laminated timber nlt. I am looking to space rafters at 72 however i cannot find any information on diaphragm strength of the t g decking.

Nlt nail laminated timber is a mass timber panel system which can be used for floor wall and roof structures. Asce 7 american society of civil engineers. Irc table r803 1 lists 1 1 2 t g for rafter spans up to 72. A shear wall however is a vertical cantilevered diaphragm.

Decking is also available in laminated wood. Construction adhesives for field gluing plywood to wood framing must meet minimum performance standards specified in astm d 3498 10. The entire solid non glazed area of the exterior walls has plywood sheathing but only a. Tall wood buildings like t3 minneapolis have used nlt as floor and roof panels atop glulam beams.

Just wondering if anyone has used this decking to act as the roof diaphragm. This project features a free form solid laminated wood roof site fabricated with 2 x 6 lumber in six foot wide panels and supported by 93 milled glulam columns and a two way cable truss system. A diaphragm is a flat structural unit acting like a deep thin beam.