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  1. U

    Lowering ceiling - increasing attic height / adding beams etc

    Hey everyone. Long time lurker here but I've only just signed up. **** tldr; I want to lower my ceiling using steel beams on party walls to increase attic headroom. The house is stripped out right now, so I have a lot of freedom. Can anyone advise on beam sizes, bearing depths etc? **** I'm...
  2. D

    How far can 5x2 span?

    Hi there. First time post - nice to meet you! I'm planning a self build timber frame garden room with a flat roof that has an internal span of 3.3m. From the span tables I've seen, 6x2 on 400mm centres would be best - based on minimal loads as doing a cold roof and wont be up there often and...
  3. D

    Treated pine beam span

    Hi, I'm putting up a freestanding patio (5 x 2.6m) with insulated roof panels on top. I've got 6 post footings at the moment but wanted to eliminate the middle 2 posts and just have 4 posts. If I'm using treated pine what size beam would span the 5m? Or is that too far? For roof load, depth is...
  4. D

    Treated pine span

    Hi, I'm putting up a freestanding patio (5 x 2.6m) with insulated roof panels on top. I've got 6 post footings at the moment but wanted to eliminate the middle 2 posts and just have 4 posts. If I'm using treated pine what size beam would span the 5m? Or is that too far? For roof load, depth is...
  5. L

    Extension pitched roof

    Hi all, we are planning on adding a pitched roof to an extension we want to build with Marley concrete tiles on it and two roof lights in it. The total span will be about 5.5 metres. 31 degrees pitch. Which leaves the rafters length at 3430mm and the rise 1646mm What I wanted to ask is if we...
  6. three-tees

    Understanding purpose of structural support of floor

    Hi, I'm planning to utilise my basement space (previously a garage) however I'm in need of creating some additional ceiling height - especially where currently positioned there is an RSJ. In summary, I want to remove it, and replace with wood in a similar arrangement to the rest of the house...
  7. SS-ProjectBuild

    Flat Roof Structure...what nails to use?

    Hi Guys, I will be attempting to frame my own 100sqm flat roof my self! Will be using 9x3 timber all round.... what type of nails and sizes do you suggest fo this size timber? I will also be creating a trimmer for part of the roof...what is the best way to bond the 2 timbers....nails or bolts...
  8. J

    Remove internal partition on my extension. Will the flat roof stand?

    Hi, I got an extension with a flat roof and 47x125 trusses with an average distance of centre to centre less than 400mm and a total span of 5.36m A the moment I have a blockwork internal partition dividing the extension into 2 rooms and would like to have one large space as per my neighbours...
  9. M

    internal bifold door span, joist/beam suggestions please

    I'd like to put in a room divider to split a large room, and have bought some internal oak bi-folding doors. At the moment, I haven't built a frame for them to sit into. I've got a width of 3.8m (masonry walls both sides) and ceiling height of 3.3m. I was thinking (dangerous I know) of using...
  10. G

    Building Flat Roof

    Hello All, I am building a workshop, the plan was for 8m x 5m which planning & building regulation granted permission. But would like to have more space and build it bigger. The new plans will be for 10m x 7m. I am stuck on the flat roof design, any advice is greatly appreciated. How should...
  11. T

    10 x 2 joist centres for flat roof

    Hi all, I'm putting 10 x 2 joists in for a flat roof. The span is about 3m from wall plate into steel and then the same out of the other side of the steel to the fascia. The steel section is 254 tall so I've gone for 10x 2 to give a flat roof and a flush ceiling. Can anyone advise on the...
  12. D

    Putting plywood on walls of a metal shed

    I'm wondering if I could get some advise about putting plywood in my shed. - The shed is a metal colorbond shed - The vertical beams at the corners are Z purlins - The walls all have three tophats running horizontally - one along the top, one along the middle and one near the bottom -...
  13. Cordwood_Jacob

    Which beams are ideal for long spans?

    Hello, I am new to this forum and hope to find some interaction and help here. Here is my project: My wife and I are going to be building a cordwood shop (with an upstairs apartment) this coming spring in Montana. I have a building and carpentry background, but have never built a structure this...
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