Seismic Roof Curb Requirements

It is suitable for units in the 5 000 lb to 12 000 lb 40 ft long class for most seismic and wind conditions.

Seismic roof curb requirements.

1 3 density fiberglass as required fully welded mitered corners. The york curb uses only un treated wood. Additionally seismic requirements are not fulfilled by just ordering a seismically stamped roof curb. Seismic curbs are manufactured by thycurb fabricating division of thybar corporation or approved equal.

Meets seismic code requirements. Icc es ac 156. Furnish and install prefabricated seismic roof curbs as required to meet seismic requirements. The additional requirements are detailed on each stamped submittal drawing.

The curb should provide a minimum clearance of 10 inches between the top of the fi nished roof surface and the top of the wood nailer continuous around the curb. Any roof curb rigid or vibration that have been engineered and stamped to meet current ibc 2015 you may also hear this as complying or calculated. As the sizes increase beyond 12 000 lb and 40 ft of length attachment to a sheet metal roof curb becomes impractical. All welds coated after fabrication.

Curb adapters retro mate. 16 gauge galvanized steel. Ss is the mapped maximum credible earthquake five percent dampened spectral response acceleration parameter at short periods as defined in asce 7 10 section 11 4 1. Non insulated roof curbs.

Roof curbs insulated roof curbs. For these applications esr s andmegacurb s are required. The international code council icc is a non profit organization dedicated to developing model codes and standards used in the design build and compliance process. The international codes i codes are the widely accepted comprehensive set of model codes used in the us and abroad to help ensure the engineering of safe sustainable affordable and resilient structures.

07 72 00 thy buyline 3055. Flange screwed to 15 32 osb roof deck 8 2 7 24 x 24 curb with exhaust fan fan screwed to curb 2 5 8 36 x 36 curb with exhaust fan fan screwed to curb 3 3 9 5 9 x 3 8 curb with 2 8 high hvac unit hvac unit screwed to curb 4 5 10 5 9 x 3 8 curb with 2 8 high relief air hood hood screwed to curb 35 6. The goal is to match or exceed the seismic roof curb design value referred to as the ss value. Additional roof curb anchoring and methods of securing equipment to the curb are also a requirement and must be adhered to for the certification to be valid.

Catwalk service platforms. Equipment mounting supports.