17/04/2012

joists an bearers

Today we started out on the building i finished off my man hole from yesterday buy putting on the joist hangers and lining up the joists at 450 centures. after lunch we put up string lines and used blocks on top of each joists to make sure they were level each joists either had to be packed up with dpc paper or if the joist was to high it had to be taken out an the bearer was plane down to match.. after we got them all level i measured out at 450 centures i nailed them all down on each side of the joist. i used my tape an measured the under neath of the joists so that later in the build we can just pull the top across to match the bottom. after all the joists were strait we ran a plank across the top of the joists to hold them strait while the floor was being nailed down. to work out how many joists were needed i divided the length of the house floor by .450. eg 17.2m divided by 450mm. the nailing pattern for the joists were 2 nails 1 top 1 bottom at the ends an through the middle it was 1 nail on each side of the joist but nailed into each alternate bearer.


hand tools used
hammer
rule
square
8m tape

power tools used

nail gun

radial arm saw