## Assembling objects

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In our two worked examples we have made a wall and a roof truss. In this worked example, using these objects we now want to create a building

## Brief

Using the wall and truss objects, and modifying where necessary,
generate a model of a three-sided structure (4th side is open) with a
pitched roof. The 3 sides of the structure are brick walls and should
be keyed together where they join and have a flush face at the open
edge. The brick structure should be 3m wide, 4m long and 3m
high (nominal dimension), the roof slope should be 30 degrees. The
roof truss beams are 40mm wide and 50mm tall, with a wall thickness of
3mm and a density of 7800 kg/m^{3}. They should be equally
spaced, no more than 1.5m apart and the minimum number of roof trusses
should be used subject to there being at least 2. Cladding should be
added to the roof, such that it touches on the apex and overhangs at
the front, rear and sides by 50mm. The cladding is 10mm
thick. Determine the size of the cladding panels, the mass of the roof
trusses and the lengths of the individual beams, the number of bricks
and half-bricks required and the volume of morter. Bricks are the
standard size - 180mm long, 45mm high and 90mm wide