CTD

EXERCISE 3

GREEN PIONT PART

''palyfull beautiful structures''

PRIMARY STRUCTURE 

The sceleton of the structure wich is the 'main frame'... In the picture above I have clearly indicated what the main frame complies of. The main frame - or in this case the primary stucture is made of mainly 114x38 rafters and 225 diam gumpoles. These are key in holding together the whole structure in a stable condition as they are the most strongest components and will not perrish so quick against the forces of nature.

SECONDARY STRUCTURE 

Galvanised steel bracing and brackets hold the main frame together, but the secondary structure is also held up by 800x300 concrete footings and rock beds. 225 Diam gumpoles are planted in these footings, those that are planted in concrete footings are wrapped in DPC as for those that are planted in slate rock beds are lifted by a bracket 150mm from the footing.

FIXINGS

Overall the framework is fixed with galvanised brackets and bracing with bolts with caps on them. Segmets like the screening and bench tops are fixed with nails. The primary structure wich is the gumpoles in this case are fixed to the secondary structure (footings) mostly using the U-shape bracket.

SPAN WIDTH OF MEMBERS

Spans vary between 2m & 3m. 114x38 Rafters can roughly span over 3m, but smaller pieces like those of screening can only span +-2m. I can see the that water penetration has affected the shape of the wood and that there have been allot of contraction and expantion - humidity!

*Copyright 2012

 FUNCTIONAL PRECEDENT:

These were also presented in class, I've clearly indicated my references on the picture...