Typical Residential Floor Construction

Standard concrete floor slab thickness in residential construction is 4 inches.

Typical residential floor construction. Floor cantilevers for the top floor of a two or three story building or the first floor of a one story building shall not exceed 24 inches 610 mm. If these steps are performed correctly the owner can expect an attractive durable product. These or similar load combinations are often used in practice as short cuts to those load combinations that govern the design result. Application in residential construction and the design of typical components and systems in a home.

Common mistakes in concrete floor slab construction can be avoided with proper base preparation mix design placement finishing and curing. Light frame 2x12 wood floor with 3 4 inch wood structural panel sheathing and 1 2 inch gypsum board ceiling without 1 2 inch gypsum board subtract 2 psf from all values with carpet vinyl or similar floor covering. Newer construction has floor joists spaced at 16 inches on center. Some newer homes have manufactured i beam shaped joists.

Cantilevers not exceeding 24 inches 610 mm and supporting two stories and roof first floor of a two story building shall be permitted provided that all cantilevered joists are doubled nested or back to back. Floor joists are typically 2 by 8s 2 by 10s or 2 by 12s. This guide makes effective use of the short cuts and demonstrates them in the examples provided later in the.