Solid Laminated Roof Diaphragm

Clt floor and roof systems are currently designed and built using clt as a diaphragm material in accordance with principles of engineering mechanics and provisions of the nds for connections and member design.

Solid laminated roof diaphragm. I am looking to space rafters at 72 however i cannot find any information on diaphragm strength of the t g decking. The above comments pertain to the forces parallel to the roof trusses. 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. Just wondering if anyone has used this decking to act as the roof diaphragm.

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. A second layer of plywood sheathing was added to meet load transfer and drift requirements according to code. 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. Decking is also available in laminated wood.

Does anyone have experience using tongue and groove decking for roof sheathing. Or thicker or laminated decking. They weigh less than concrete or steel so can also reduce foundation costs. It is designed of two to five strips of kiln dried wood glued with an exterior waterproof adhesive to form a glulam roof decking.

Have to use a grade of lumber that is pressure treatable too and that means a lower allowable stress grade. Irc table r803 1 lists 1 1 2 t g for rafter spans up to 72. A custom steel sculpted universal connector at the top of the glulam support columns was developed to accommodate the constantly varying roof geometry. While eight story cross laminated timber buildings exist in.

Inherent is the assumption that the sheathing nail will have a penetration of not less than 10 diameters. Used in floor and roof applications panels are installed so the. Goodfellow also offers solid wood decking species in red pine red cedar spruce and larch. While he was at the potlach co.

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. Looking more at 6x12 or 8x12 columns without the roof diaphragm and end shear walls.