Browse Forums Outdoor Living Re: 70Jun 03, 2010 11:17 am Hi, We recently just moved to our new house. Its time for me to build a deck. My area is about 4.4 x 4.5 Dukekamaya The joist span means the distance from one bearer to the next. You are beat to run one 6 metre length if you can, giving you four 'spans' of 1500mm - therefore you would have 5 bearers etc. If the other span is 5 metres I would have 4 posts spaced approx. 1670mm apart. Its fine if you glue/nail 2 pieces of 90x45 together for that. Looking at Duke's comments, I can have the distance of the bearers about 1.5m of each other. If this is the case, what should be the distance of my posts? it 1.46m enough? if I will be using the same bearers as wonderland (2 90x45), can I use 90x90 posts? if yes how can I rebate the bearers to the posts? What if I use 90x90 post, 140x45 bearers and 90x45 Joist is this ok? can I still use the same distances for posts, and bearers? but for bearers I will only use 1 140x45? Thanks Thanks Re: Calculate the price of a deck - Mother of all posting!! 72Sep 29, 2010 10:52 am Hi guys, I'm planning out my decking now while my house is being built, I have done a bit of research and put figures into websites to tell me what I need. I just want to know if im on the right track. Then I can start pricing it all. here are some pics of the decks i plan to build Alfresco Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Verandah Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Entry Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Our First Build in Cardinia Lakes, Pakenham Site Start - 29/07/10 Pipes -04/08/10 Slab Prep - 10/08/10 Slab Pour - 13/08/10 Frame Start - 16/08/10 Windows in - 07/09/10 Plumbing rough in - 07/09/10 Bricking Finished 24/09/10 Roof, Gutters & electrcal finished - 12/10/10 Plaster, Skirting, Doors, Kitchen - 26/10/10 PCI - 08/12/10 Handover - 16/12/10 Re: Calculate the price of a deck - Mother of all posting!! 73Sep 30, 2010 7:09 am What sort of timber are you planning on using? You have joist 100 x 50 mm (normally not seasoned) and bearers 90 x 45 mm Do you have space below deck to increase bearer size (less holes, posts, concrete) Landscape Design & Construction http://cherub.squarespace.com/ Re: Calculate the price of a deck - Mother of all posting!! 74Sep 30, 2010 2:39 pm I think the best advice I can give you is get a copy of the F5 span tables used in the AS1684-2010 (people post it in places, use google) and work out the spacing from this. I used the program you have used when I was starting out and designed it completely differently after getting the tables. If you can, get a copy of AS1684.4-2010, it explains everything you need to know about designing properly. In order of how to design, work out which way you want your boards to run (this governs the direction of bearers and joists). Then work out your ground clearance to determine the size of structural timber you will need to use (the most common joist/bearer sizes are 90x45 or 140x45). If you can, 140x45 is ideal as it allows long spans between bearers and posts. The bearers will be nail laminated (ie. 2/140x45, nailed together with the grains running in opposite directions). Space your joists at a maximum of 450mm. Be aware also that your Alfresco Deck may require a permit (in my council any deck over 10 squares needs one). Check with your council now so your aware. As far as other comments on your plans, * is there a reason you have chosen 70mm boards and not 90mm? * The cantilever on your bearers appears too large for all three decks (the unsupported part of the bearer that runs past the last post. for 2/90x45, max is about 400mm depending upon floor load width * Change your joists to 90x45 or 140x45 (90x45 may mean you need another line of bearers) * Make sure any joist cantilever (unsupported part of the joist that runs past the last bearer) is within spec * I think a border around the deck looks great (like a picture frame). Consider doing this? Re: Calculate the price of a deck - Mother of all posting!! 77Jul 20, 2011 8:47 pm Hi guys, I'm looking at building my own deck for our alfresco area and also extending it out either side of it, after reading through the thread I've got some of the information I need, but need a few more details and just wanted to clarify some things... Our deck is going to be on ground level, can't go more than 2 brick courses up from concrete slab due to termite mesh laid between the 2nd and 3rd bricks. I got a quote from a local pergola/decking installer, he quoted $8k. He's quoted us on bearers 200x75mm, joists 100x50mm, decking merbau 90x19mm - do my joists and bearers need to be that tall? In the diagram attached, the bearers are going top to bottom, joists left to right, and decking top to bottom. I've read that joists have to be 450mm apart which is fine, I'm unsure of what spacing the bearers are to be spaced apart and how many posts (stirips concreted into the ground) that I will need/spacing apart? The blue lines is where I was thinking of bolting joists onto (I read that it shouldn't be done but is the house really going to move that much?) the brickwork, running bearers under that which will be supported by the stirips. The orange square is our alfresco area. I was also told about a place in Melbourne (I'm in Sydney) from a friend of mine called no nail decking which is a little bit more expensive but you don't have the nails showing (only on the edges), has anyone used this or heard of it? good or bad feedback? Does anybody know of a cheap timber supplier in western Sydney? I checked out bunnings last weekend and they seem expensive.. Any help/feedback is greatly appreciated guys. Dave. __________________________ Building the Concerto with Allorth Homes @ The Ponds Our blog Noddy @ The Ponds http://noddytheponds.blogspot.com PM me re Landscape Plans Re: Calculate the price of a deck - Mother of all posting!! 78Jul 21, 2011 8:45 am My deck is similar to yours, i used 250x90 bearers, 90x45 joists, and 90x19 decking boards. got the timber for the carcass from Macarthur landscape supplies, and the decking boards from Abbey Timber (was about $3.60/lm) Re: Calculate the price of a deck - Mother of all posting!! 79Jul 27, 2011 4:50 pm Has anyone got any photos of their DIY Decks? And can you say whether you regret your DIY or are happy you gave it a go? Surrey Hills, Vic 3127 Garage is being built with metal, 3m distance away from my cover deck. It is parallel to my cover deck, living room, family room and kitchen,… 0 9611 I've just built 3 stairs off a landing out the back and been told by the private certifier I need hand rails sorry tried to attach a pic but couldn't mine don't have sides… 5 5706 So I'm just reading up on this ecosystem of lights. I'm planning on putting deck lights along the outside edge of a large deck. Will need about 3 packs (18 lights) plus… 0 23016 |