Our house had a lot achieved today. Team split up and did different jobs, Some concentrated on attaching the last of the floor joists, and the others attached the boundary joists.
With the boundary joists, it was important that they aligned with the stringline run out along the BL. Where it didn't match up, clamps were used to hold in closer to the floor joists they were being attached to, so that they could be driven in closer. The boundary joists had to be of H3.2 treatment as they were being exposed to outside air. We had to be very careful with the lengths of timber we used for certain areas, as we only had a few of certain sizes so some thought really needed to put in to what we used where.
For the nogging, measurements were made from the center bearer to 1800cr (as per joist plan). An additional 22.5mm was added (half thickness of nog). A stringline was run along this measurement so that the nogging could be aligned to it. Got the tip from Rich to lay out a plank along the top of the joists, as it is much easier to hammer from above than at level or below. From here the two floor joists having the nogging placed between it were clamped so that it held the nogging in place. it was important that the nog sat flush with the face edge of both floor joists, & were squared off to the stringline. 3 x nails were driven straight from one side, the other were angled in at 3 spacings (careful not to hit any other nails). This creates a strong attachment unlikely to move. I only got a couple done as quite a time consuming job, would be better with someone to work with.
Another tip we learnt today was to hammer a piece of wood over the top of attached floor joists when the weather is wet. This is because there is a tendency for the wood to twist and warp as it gets wet and then dry, having this in place will stop/minimise this from happening.
Left photo: Nogging aligned with string line and flush with face of floor joists
Right photo: Noggings between joists all attached.
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