Factor Roof Design

There are a number of factors that determine the design wind uplift loads for the field perimeter and corners of a roof.

Factor roof design.

Both table 1 5 1 and ibc table 1604 5 should be reviewed. Simply locate a roof rafter board place the end of the level against the bottom edge and measure from the 12 inch mark vertically to the bottom edge of the rafter. Below are five of the most significant factors. The dutch gable hip roof is a hybrid of a gable and hip type of roof.

The resistance factor is a function of how comfortable the design community is with the type of limit ie. The roof design everyone wishes to live in an aesthetically pleasing house. See 1 4 11 4 1 and 11 7. For example if you measure 4 inches the pitch of your roof is 4 12.

Research green roof manufacturers. Zone coefficient z importance factor diameter of tank d i height of liquid content design h shell height hs design specific gravity g tb thickness of bottom pl under shell. Using metal such as copper or zinc for the steep portion of the roof can be more expensive up front but will require much less maintenance down the road making it a good long term choice. Building code that is in effect at the building s location.

This imaginary worse case load moment or stress is compared to a limit value that has been modified by a resistance factor. Non structural components in sdc a are exempt from seismic design requirements. Fixed cone roof with internal floating roof. The balanced snow load is applied everywhere where the roof structure is located.

This is only possible if the roof has a unique design. The design of your roof will determine the roofing system that you use. A full or partial gable can be found at the end of the ridge in the roof allowing for a greater amount of internal roof space. Height length and width.

After you obtain the roof slope factor from those sections in asce 7 10 the balanced design snow load for the sloped roof can easily be calculated using equation 7 4 1. Usually mosses succulents bulbs and tubers grasses herbs herbaceous and woody plants are recommend for green roofs. Since a mansard roof has such a unique design choosing a unique material could make the roof that much more special. These systems are presented in the guide in relation to habitat water management energy needs and other factors affecting a project s design.

These factors take into consideration how likely the load is to happen and how often. The importance factor is based upon the risk category and the associated life safety hazard or essential nature of the structure. There are certain factors which need in depth consideration. In order to determine the wind loads acting on a roof the architect designer needs to know the following about a building location.