Note: All Any of the framing wood. must be suitable for exterior use.
c) Boundary One of a series of parallel members used to support the floor. Part of the framing that provides the structure for a floor.: The boundary joist is fixed to the boundary. of the A flat floored roofless area adjoining a house. Timber deck: An outside floor structure comprising of posts, bearers, joists and decking boards. to give a neat finish and if the boundary joist is required to support the handrail, then it must be fixed to the joists using Covered with a protective coating of zinc. Are round headed bolts with square shoulders that resist rotation when located or driven into place. They can be called coach bolts or carriage bolts depending on which part of the world you live in. The head end of the bolt does not need a washer, but the other end of the bolt (the nut end) usually does. screws with washers and also with A short nail with a large flat head used for securing roofing felt, plasterboard, sheet metal to wood etc. plates fixed to top and bottom of joists.
d) Baluster: (handrail see PILE): The baluster is fixed to the boundary joist using 2 galvanized bolts with washers. The bolts should be 25mm (1″) from top and bottom of the boundary joist. The size of the baluster depends on the handrail structure and the baluster spacing. For example, if the top The top and bottom frame member of a door or window (not the jamb). Cross member of panel doors or of a sash. Also the upper and lower member of a balustrade or staircase extending from one vertical support, such as a post, to another. The horizontal member of a fence. is 150×50 (1×6) as shown in the diagram above and the balusters are 2000mm (80″) apart, then the balusters must be 100×100 (4×4). If the balusters are 1800mm (72″) apart, then the baluster can be 100×75 (3×4).
e) Top rail: The height from the deck to the top of top rail should be at least 1000mm (40″). The top rail is fixed to the balusters with 100mm (4″) galvanized nails. (minimum of 2 nails for baluster spans up to 1400mm (56″) and a minimum of 3 nails for spans above 1400mm (56″).
f) Blocks, see Block.: The blocking 50mmx 50mm (2×2) is fixed to the underside of the top rail and is used to support the palings.
g) Bottom rail: The top of the bottom rail must not be higher than 150mm (6″) from the deck. The bottom rail is fixed to the balusters using 3 galvanized nails penetrating no less than 50mm (2″) into the baluster and the size of the bottom rail depends on the baluster spacing. For example, If the baluster spacing is up to 1700mm (68″) then the bottom rail should be 100×50 (2×4), if the baluster spacing is up to 1800mm (72″) then the bottom rail should be 150×50 (2×6), and if the baluster spacing is up to 2000mm (80″) then the bottom rail should be 100×75 (3×4).
h) Palings: Palings should be 25mm (1″) thick timber and at least 65mm (2 1/2″) wide, and have a maximum gap between palings of 100mm (4″). The palings are fixed to the top and bottom rails with galvanized nails.