carport design

[jex]

Hi, I would like to make a carport extending from the side of my house for my RV which is 10m x 2.5m. I have some 150mm x 60mm C purlins that I was going to use to span the long side to attach span deck sheet roofing (3.5m span ) too. Does anyone know what pole spacings I would need for the 150mmx60mm purlins ? I will be drawing up the plans for council approval so wanted to get an idea what spacings are required.

[Shedblog Au]

Hi Jex, do you know what thickness the Cee150 is? 1,1.2,1.5,1.9 or 2.4mm ? Depending on what BMT , Base metal thickness you have will specify what spacing between posts.

To go to council you may need engineering signed off by an engineer. I suggest speaking to a Private Certifier as the Carport may qualify as a Complying development and Private Certifiers are often easier to deal with and sometimes more economical than council certifying.

If you go to lysaght website you can find span tables for Cee section.
cheers,
Dave from Shedblog.com.au

[jex]

Hi Dave, the purlins measure 1.6mm so must be 1.5 if no 1.6. I contacted Moreton shire council some time ago and they gave me a list of certifiers as long as your arm. How do you know which one to use, start at the top of the page and work down ?? As it is a fairly simple design I thought I would have a go at it myself as the first bloke I rang on the list started at $200.

[Shedblog Au]

Hi Jex, I couldnt suggest how to find the best certifier. If anyone reading this can recommend a good certifier in the Moreton Shire district the please do so.
Yes, that Cee would be a 1.5 BMT I'd say.
Certifying a carport around here (mid north coast NSW) would cost around $400.00
I do think that either a certifier or council may require the engineering for your structure to pass it as they look at connection methods to the house, wind rating, spans of materials etc.
Call any of the certifiers on the list and ask them what they would consider as minimum engineering documents to pass the structure.
Cheers, Dave

[watson]

I reckon you two blokes would be much better served on our sister forum Renovate Forums - Powered by vBulletin (http://www.renovateforum.com)

Heaps of tradies and advisors there..plus a library full of span tables etc.