Floor Joist Timber Floor Construction Methods

Purchase the type of lumber that matches the width of the existing joist.

Floor joist timber floor construction methods.

69 chapter 4 floor construction woodframe floor systems and concrete slab on grade floors are discussed in this chapter. The latter options are more expensive but provide considerable benefits. Solutions for first floors include traditional softwood joists timber i joists or open metal web joists. Most new construction uses 2 by 8 lumber for joists although 2 by 6.

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. The following table gives details of allowable spans and spacing between joists for the most common timber sizes used in floor construction. We explain how hollow or suspended floors are made and what the key building regulations that affect them are.

Measure the width and length of the existing joist. 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. Building and understanding a suspended or hollow timber floor. All the figures are based on normal domestic floor loadings where the floor construction is typically 18 25mm floor boards sheets with up to 12 5mm thick plasterboard and skim underneath.