Big big car port DIY

Author
Discussion

M400DPC

Original Poster:

256 posts

196 months

Sunday 30th August 2015
quotequote all
After a bit of a spending spree this summer I need to erect a Carport pronto.

Needs to accommodate 4 cars so assuming Car length is15ft and width 10 ft (allowing clearance) Im looking at a 40ft behemoth.

Thinking that 20ft roof joists will do the trick as follows:
2 x back, 2 x middle & 2 x front = 6 joists

Then support beams going front to back using 16ft joists = 5 joists

For the uprights I'm thinking 4 x 4 10ft posts concreted into the ground (although 5x5 might be better) as follows:
5 at front, 5 in middle, 5 at back = 15 posts

To cover the back and sides from the elements was thinking chip board with lapping over the top.

For roof Corregated plastic.

Please all and any thoughts on the way I am proposing to do this, the cost of materials, where best place to get them and time to carry this out.

Cheers

Royce44

394 posts

113 months

Sunday 30th August 2015
quotequote all
Dig deep foundations.

Your welcome B)

M400DPC

Original Poster:

256 posts

196 months

Monday 31st August 2015
quotequote all
How to build s 4 car carport from scratch. Discuss wink

CorbynFTW

12,230 posts

194 months

Monday 31st August 2015
quotequote all
An old neighbour had something similar against their house, made a great wind tunnel.

This did cause some of the plastic corrugate to crack and flap about, caused an almighty racket!

Use many many many fixings to hold it down!

Andehh

7,110 posts

206 months

Monday 31st August 2015
quotequote all
Pretty sure I used 4 x 4" posts, a few feet long to build a decking off! With the doors open, and a very windy day I would definitely want something a tad more substantial then that. As I did with my decking.... with no experience, no calculations, no second thoughts (and an excess of enthusiasm) the only way to avoid disaster was to over spec everything to the point of hilarity.

I'd also want holes a few ft deep, and a foot or two in diameter. 110mm screws and coach bolts for joints as well.

Also use this sort of panel for the roof (combined with additional lighting), the plastic gets & looks manky very quickly IMO. You can also use the bitumen to seal the overlaps between panels so no leaky water. It is also less liable to crack and instantly fail.

http://www.wickes.co.uk/Black-Corrugated-Bitumen-S...

Gingerbread Man

9,171 posts

213 months

Monday 31st August 2015
quotequote all
Someone did similar a while back out in front of their garage. He might be able to help....

lewisco

380 posts

119 months

Monday 31st August 2015
quotequote all
Gingerbread Man said:
Someone did similar a while back out in front of their garage. He might be able to help....
Was it this one smile

http://www.pistonheads.com/gassing/topic.asp?t=146...

richtea78

5,574 posts

158 months