Seismic Roof Curb Requirements

Additionally seismic requirements are not fulfilled by just ordering a seismically stamped roof curb.

Seismic roof curb requirements.

1 3 density fiberglass as required fully welded mitered corners. Non insulated roof curbs. Equipment mounting supports. Furnish and install prefabricated seismic roof curbs as required to meet seismic requirements.

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. The york curb uses only un treated wood. Meets seismic code requirements. Base shall be constructed complete with all welded corners and wood nailers.

For installation on flat membrane built up roofs requiring seismic rating. The goal is to match or exceed the seismic roof curb design value referred to as the ss value. Curbs solidly braced or bolted directly to the building structure without vibration isolation. The additional requirements are detailed on each stamped submittal drawing.

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

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. 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. Roof curbs insulated roof curbs. Curb adapters retro mate.

Icc es ac 156. 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. As the sizes increase beyond 12 000 lb and 40 ft of length attachment to a sheet metal roof curb becomes impractical. 07 72 00 thy buyline 3055.

Seismic curbs are manufactured by thycurb fabricating division of thybar corporation or approved equal. Catwalk service platforms.