Floor Joist Timber Floor Construction Methods

Solutions for first floors include traditional softwood joists timber i joists or open metal web joists.

Floor joist timber floor construction methods.

The following table gives details of allowable spans and spacing between joists for the most common timber sizes used in floor construction. Whether building a ground floor suspended timber floor or a first floor hollow floor we explain the different options and techniques that you can use in its construction. The method and type of fixings used to secure the floor deck to the top of the joists also needs to be considered. We explain how hollow or suspended floors are made and what the key building regulations that affect them are.

69 chapter 4 floor construction woodframe floor systems and concrete slab on grade floors are discussed in this chapter. Unlike softwood joists timber i joists do not warp over time providing a quiet floor while open metal web joists can provide an easy means of installing services. Purchase the type of lumber that matches the width of the existing joist. Building and understanding a suspended or hollow timber floor.

The latter options are more expensive but provide considerable benefits. Rather the reader is referred to the aisi standard for cold formed steel framing prescriptive method for one and two family dwellings aisi 2001 for guidance. Most new construction uses 2 by 8 lumber for joists although 2 by 6. Although cold formed steel framing for floor systems also is permitted by the irc it is not covered here.