Eng Tips Attic Lateral Design

And compression edge held in position with sheathing b d 6 7 laterally restrain ends both compression and tension sides.

Eng tips attic lateral design.

K 3 topography factor. 2attic loads may be included in the floor live load but a 10 psf attic load is typically used only to size ceiling joists adequately for access purposes. They are legally backed by the engineering profession. Where v z design wind speed at any height z in m s.

Mapped spectral response accelerations s s and s 1. K 1 probability factor risk co efficient k 2 terrain height and structure height factor. Loads govern the lateral design of the building. Eng tips engineering forums is an intelligent work forum community for engineering professionals of all disciplines.

If the drawings say it s a shear wall and you say it s okay to remove it you now own the lateral load resistance capabilities of the structure. Spectral response coefficients s ds and s d1. If these requirements. Several of the tooling and casting requirements of a part can be addressed at the design stage.

Structural engineering general discussion. Seismic importance factor i e and seismic use group. Different design methods are used but they typically defined the load cases or combination stress or strength limits and deflection limits. However if the attic is intended for storage the attic live load or some portion should also be considered for the design of other elements in the load path.

Design codes in general design codes are issued by a professional organization interested in insuring safety and standards. Lateral stability aspect ratio d b b d d b 2 no lateral support required b d 2 4 ends held in position b d 5 6 laterally restrain ends and at intervals along length of less than 8ft. The design wind speed v z is given by v z v b k 1 k 2 k 3.