Thickness Of Second Story Floor

Whether you re installing a hardwood floor on the first or second floor of a building you need a solid subfloor that won t sag and that will hold nails.

Thickness of second story floor.

Floor joists are made from 2 by 8 inch or 2 by 10 inch lumber or from engineered quiet beams which are made from a thin layer of chipboard on edge between two lumber caps forming an i shape. Let s expand our house beyond that 17 2 span capability to 24 feet wide. Subfloor holds up all of the above layers of flooring as well as everything in your house people dogs cats pianos furniture. Dead load weight of structure and fixed loads 10 lbs ft 2.

So the house dimensions will now be 24 x 13. An inaccessible attic space on the other hand might have a live load of only 20 psf. First floor live loads have higher requirements than second floor live loads 40 pounds per square foot vs. Typically made of plywood or osb and ranging in thickness from 19 32 to 1 1 8 thick the subfloor is truly structural second only to joists in this respect.

A room used solely for sleeping might need to carry only 30 psf whereas a garage floor over a basement would need 50 psf or higher. 4 5 inches 0 1 0 125 m farm building floors home basement floors. 6 8 inches 0 15 0 2 m side walks barn and granny floors. 5 6 inches 0 125 0 15 m porches home garage floors.

2 grade of douglas fir are indicated below. Standard floor thickness however is substantial in order to provide the strength necessary for bearing the weight of the walls the ceiling and the roof. Once the drywall carpeting and finish trim are in place you can t see the framing that goes into the construction of a main or second story floor. 1 psf lb f ft 2 47 88 n m 2.

4 inches 0 1 m. 1 ft 0 3048 m. The widest span in the floor joist span table in part 2 of this tutorial module showed that floor joists can span 17 2 if they are 2 x 12s spaced 12 o c. I would like to put a 12 6 ft billiards table which stands on 8 legs and weighs approx.

Proper subflooring for wood on second floor. I have a 2nd story rec room measuring 24 18 in an all brick house built in 2011. The rec room is the only room on the 2nd floor and contains attic access and a full bath.