I would like to build a raised floor to accomodate a bathtub, sink and toilet.
There already exists a floor. The timber joists run along the shortest axis of the room being approximately 2.4m wide accounting for the 10cm joist ends which sit into the brickwork.
The house is a mid-terrace. Built 1900.
To construct my new floor, can I overlay the joists on the existing floor - I presume this is not best practice? If I am to build a new floor over the existing floor, which would be supported independent of the existing one, is the following construction suitable:
1. Hang one main joist (number 6 on drawing) across the shortest length of the room in the same direction as the current joists - span 2.35m - bearing 100mm 2. Hang other 5 joists (number 1-5) at a right angle to the first joist for 2.15m into the wall at the other side. 100mm bearing one end on brickwork // 450mm centres. 3. Adjoin Joists 1-5 to joist 6 by way of joist hangers.
Joists 125 x 47mm C16. What specification should joist 6 be - I presume it must be larger to take the weight of 1-5? Drawing attached with plan.
DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!