Eng Tips Attic Lateral Design

Structural engineering general discussion.

Eng tips attic lateral design.

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. Eng tips engineering forums is an intelligent work forum community for engineering professionals of all disciplines. Where v z design wind speed at any height z in m s. 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.

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. Several of the tooling and casting requirements of a part can be addressed at the design stage. Seismic importance factor i e and seismic use group. K 3 topography factor.

Loads govern the lateral design of the building. Either way i think you should investigate the lateral load paths in this house. Spectral response coefficients s ds and s d1. And compression edge held in position with sheathing b d 6 7 laterally restrain ends both compression and tension sides.

Design wind speed up to 10 m height from mean ground level shall be considered constant. The design wind speed v z is given by v z v b k 1 k 2 k 3. They are legally backed by the engineering profession. Mapped spectral response accelerations s s and s 1.

K 1 probability factor risk co efficient k 2 terrain height and structure height factor. 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. Different design methods are used but they typically defined the load cases or combination stress or strength limits and deflection limits.