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Type 1 :If you have an existing concrete slab, for a
standard carport the posts will be the
height of 2.1m clearance at the front with a fall of 200 mm to the back of 1.9m clearance
 
Type 2 : If you intend to pour a slab, you
should consider concreting the posts into the footings. This will ensure the carport is
extremely well braced, limiting any sway
that may occur in cyclonic areas. Also, by concreting the posts into the
footing you will gain an extra height of 200mm front and back.
 
This is because the posts are supplied to Mecano in 8m and 6m lengths - This means a 6m post
can be cut into a 2.1m and two 1.9m, and a 8m length can be cut into three 2.65m
lengths.
Footing depths are generally 600mm deep (with slab) or 900mm
with footings only. The Posts only needs to be under the top of the concrete
300mm in either case: This means the front of the shed will have a clearance of
2.3m while the back posts can be placed 500mm from the top of slab so
there is a 200 mm fall.
Type 3. Non Standard - Type 1 and 2 are usually limited
to domestic use. Should you require a carport with extra height, please let the
sales staff know your requirements: The rule of thumb is to simply use them 8m and
6m lengths and then figure out the post lengths depending on stock.
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