Today we went to ITM truss and frame plant.
We  seen how they made the trusses for the roofs and frames for the walls. It was interesting to know that only selected places [people] can build trusses [for roof]
Upon coming back to class we talked about wood [pinus radiata] and why it was used extensively within the NZ building trade.
Then we talked about MSG [machine stress grade] and the levels, 6 to 12 being the best quality. MSG10 was the one used to make the trusses and frames.
After that we went over the timber treatment scale - H1.2 the treatment level used on the timber used to make the trusses and frames up to H5 that is treatment used for the timber used in the structure that is in the ground. We also looked at the chemical [used to treat the wood, and the colours of the wood from these treatments / H1.2 pink, H3.2 to H5 green], tothe level of exposure the different grades can  take [near to none up to being in the ground] and then the Bio hazard each treatment protects the timber from decay to insects.
In the afternoon we went over Pythagorus Theurum [right angle triangle] a squared + b squared = c squared or c square - a squared = b square / c squared - b squared = a squared
    Also how to set up a builders level, placing the 2 front parts of the level over the 2 legs of the tripod with the other part over the third leg, then leveling it up by the dials on the sides to place the air bubble in the middle of the circle. repeat moving the level around in 90 degree sections keeping the bubble in the middle.