A typical wood frame floor covered with carpet or vinyl flooring has a dead load of about 8 pounds per square foot.
Floor loading standards residential.
Load types loads used in design load equations are given letters by type.
2attic loads may be included in the floor live load but a 10 psf attic load is typically used only to size ceiling joists adequately for access purposes.
In the case of a residential structure this minimum standard live load factor for main living areas is 40lb ft2 1 9 kpa.
If there s wall board covered ceiling suspended from the underside of that floor the dead load increases to about 10 pounds per square foot.
For the bottom floor of a single story residence no basement.
Foot ceiling construction gypsum sheetrock finish 10psf floor construction carpet or vinyl 10 psf hardwood floor 12 psf ceramic tile 15 psf.
Total dead loads 6 2 2 8 1 0 10 0 psf live load 20 psf.
If the floor trusses support load bearing walls that carry upper level floor and or roof.
The dead load on a floor is determined by the materials used in the floor s construction.
Dead loads cont d typical weights of horizontal systems roof construction asphalt shingles 15 psf pounds per sq.
May be less depending on roof slope.
These loads vary in magnitude position and duration but the building codes also require a designated live load be applied to every square foot of floor system.
By contrast the span charts in as1684 are limited only to residential floor live loads of 1 5kpa 1 8kn.
They are legally backed by the engineering profession.
D dead load l live load l r live roof load w wind load.