Answers to Everyday Questions : How is the upper floor made?

How is the upper floor made?

4 Responses to “How is the upper floor made?”

1. slammamama said :
   February 1st, 2011 at 1:47 pm

   browse around at house building plans and you’ll see that once the foundation is laid in place the the walls framed, the carpenters put load-bearing beams here and there which support not only the weight of the second floor, but the weight of the roof also. it’s basic engineering.

   then the walls of the top level are framed in exactly like the lower level, the trusses laid across the skeleton, and construction of a roof begins. You will have so much fun watching the process.
2. tblbaby said :
   February 1st, 2011 at 2:16 pm

   The outside walls are on top of the lower outside walls. Joists are usually attached to exterior walls by joist hangers, they are metal brackets that hold the joist & you nail them into the wall then into the joist you set in them. The floor is supported by interior walls you put the joists on top of, on the lower floor or supporting beams that can span a distance you need to span & made just like the floor on the lower level. You have to get local codes to see how far you can span the joists (boards you install sideways to support the floor because they are strong & inflexible that way).

   An upper floor is pretty cost effective square feet because you don’t need a foundation. Usually a basement cost 1/2 the cost of the main main floor & an upper floor cost 75% of what a main floor does. That depends on how much you put on that floor as in bathrooms & other facilities & fixtures. Another kitchen up there would be a heavy expense, but most of the time you don’t do that.
3. chris said :
   February 1st, 2011 at 2:36 pm

   I might be able to help here. As i have just finished building a story and a half house… If you already have your foundation down then you move on to your main floor. You will have whats called your load bearing walls that will support the weight of your upper floor. when i built mine i used an engineered I beam truss for the upper floor. this is were you will have to do some research to find what the proper size and length will be for your application. mine ran a span of 21 ft. so i used a 14in high truss on 16in center. So once your main wall and rooms are up you attach your I beams and end plates correctly you can then apply your second story floor and then start standing your walls on the second story. heres a few links to look at http://www.hometips.com/diy-how-to/house-framing.html and http://www.extremehowto.com/xh/hotprod_images/1a1a1HouseTT02.jpg
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