Roof Loads For New Construction

The loads carried by floor joists ceiling joists and rafters are transferred through their end points to supporting walls and beams.

Roof loads for new construction.

Here each square foot of roof system delivers 50 pounds of live load and 15 pounds of dead load 65 psf total to the structural support system. Typically roofs with slopes of 0 25 in ft or greater are not subjected to ponding unless roof drains become clogged. Remember these loads are distributed uniformly over the entire surface of the roof. Ponding water accumulates on roof faster than it runs off thus increasing the roof 18 runs off thus increasing the roof loads.

Dead loads consist of the permanent construction material loads comprising the roof floor wall and foundation systems including claddings finishes and fixed equipment. Our team is in constant contract with the product delivery team to ensure we re on time for roof top loads. Minimum concentrated loads adapted from sei asce 7 10. Minimum design loads for buildings and other structures location concentrated load lb kn catwalks for maintenance access elevator machine room grating on area of 2 in.

You have to sign up in order to view data sheets on the fm global website but it s free and definitely worth your time. For guidelines on designing roof drainage systems see fm global s ds 1 54 roof loads for new construction data sheet. Wind load magnitudes vary in. Labor only we provide the skilled installers on time and within budget turn key we provide all the top quality materials and skilled labor so that the risk of theft is no longer your headache.

50 mm by 50 mm finish light floor plate construction on area of 1 in. The roof must be able to support the sum of its dead load and any anticipated live load so the roof has to be designed with a load limit that takes into account both of these loads. The appropriate roof load used in design is dependent on where the home will be initially installed. Homes designed and constructed to a higher roof load zone can be installed in a lower roof load zone a home designed to a north zone can be installed in a middle or south roof load zone.