Sunday, September 19, 2010

on boundar marking out SJ (sheet Joint) for flooring according to lenght of the sheet manufactured, joist on the point will need to be fix centre to the joint of both sheets allowing enough space for fixing, by using string line to straighten the joist. Nogging between joist are fixed after the joist has been accurated located
fixing a piece of timber on the joints of the joist to connect them togehter, on therside nail in a galvanized nail plate to reniforec the joint as well. this is will stop joint to open up when lifting the house.
using combination square to level joist when fixing onto boundary joist, set the joist as straight as possible
Boundary joists all connect with 45 degree cut and fix the joints on end of a joist, part of the building are formed with cantilevered joists.

H3.2 boundary joist cut at 45 degree angle at joints and fix 3 galvanized nails to end of each individual joists
Joist is to be sit camber up and plan to level later
Marking out location of wet area for H3.2 joist and H1.2 for the rest, spacing of joist is to 400mm centre. Make temporary fixing to joist by putting one galvanized nail on each end as it may have to be moved later on

Laminate double joist at both end of the building, joist can be laminated with H3.2 on the outside and H1.2 inside

Run string line on BL from profile and fix double joist according to the BL, then set all centre joist in place using 20mm batten aligning method, run the string at end of boundary joist over 20mm block then fix joist according to string line