Generally, the customary floor dead load is 10-12 PSF (pounds per square foot) for floors, 12-15 PSF for roof rafters and 20 PSF for roof trusses. However, these may increase when a heavy finish material, such as brick veneer walls or tile floors/roofs, is specified.
What is the live load for a 2 story house?
U.S. building codes specify a uniform live load of 40 pounds per square foot (psf) for most residential floor designs. This load is intended to account for the large number of loads that can occur in a residence.
What is the dead load of a second floor?
The usual design load on second floor bedrooms is 30 pounds per square foot live load and 10 pounds per square foot dead load. Rooms other than bedrooms will have a 40 pounds per square foot design load.
How do you calculate dead load for a residential building?
Dead Load is the self-weight of the structure. To calculate dead load, the density or unit weight of the structure should be multiplied by the thickness, which will give us the weight of the structure per given area.
How much is a dead load on building?
Dead loads refer to the permanent self-weight of a building, while Live loads refer to the moveable, changing loads (people!) in a building. As we discussed in Force Quantities, these loads are typically defined as surface loads, as pounds-per-square foot (psf) or Newtons-per-meter squared (N/m2).
What are the examples of live loads in a house?
- Occupants and furniture in residential and commercial buildings.
- Vehicles on bridges, parking decks, and roadways.
- Storage and inventory in warehouses.
- Machinery and equipment in industrial facilities.
- Snow accumulation on roofs during winter.