Roof Curb Weight

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Roof curb weight. Include a footnote in the mechanical and skylight sections that reads all roof curbs are specified in 07720 curb installation should be a part of the roof deck not on top of insulation or roofing materials. Units may be set either lateral or. Roof curb shall be internally reinforced with angles 48 on center and factory installed wood nailer. Specify roof curbs in section 07720.

Roof top unit weight will not allow thermal movement of the standing seam roof system if the units were placed on standard curbs attached to the roof. Heights to be 8 above finished roof deck or as detailed. Top of all roof curbs shall be level with pitch built into curb when deck slopes. Do not cut out the entire roof deck within the curb area.

Refer to figure 17 and tables 1 and 2 for specific center of gravity corner weight information and accessory weights. Looking for dayton roof curb fixed nonventilated type 12 in curb height in 17 1 2 in curb square o d. Roof support the roof must be capable of adequately supporting the weight of the rooftop unit as well as that of the curb. The following table.

This curb system is typically used when the roof top unit weight cannot be supported by purlins alone and loads must be transferred to the main frames with i beams. Last updated july 22 2020.