Floor Live Load And Dead Load

A typical wood frame floor covered with carpet or vinyl flooring has a dead load of about 8 pounds per square foot.

Floor live load and dead load.

The might of the dead load or lack thereof often defines how much live load it can handle. Where d is floor dead load. The roof is also a dead load. L r l o r 1 r 2.

Dead loads are also known as permanent or static loads. Where l r shall not be less than 12 psf and not more than 20 psf. Structural steel offers much less of a dead load and provides superior support for live loads in multi story buildings. For the most part live load and dead load values for floor and roof systems are considered distributed loads.

They consist of the building and all of its fixed components both structural and non structural. Residential design loadsfloor finishes dead loadstructural design loads for the home inspector internachibuilder s engineer live loads in a building on floors roofsstructural design loads for the home inspector internachibuilder s engineer. 3 3 dead loads dead loads consist of the permanent construction material loads comprising the roof floor wall and foundation systems including claddings finishes and fixed equipment. Roof live load reduction.

The total dead load plus the total live load make up the gravity load for any given structure. R 1 1 for a t less than or equal to 200 psf r 1 1 2 0 001 a t for between 200 psf and 600 psf. Reinforced concrete creates the heaviest dead loads but also supports the most weight with its tremendous compressive strength. Live loads or imposed loads are temporary of short duration or a moving load.

Roof live load may be reduced by the following equation. Is875 part 1 1987 give unit weight of building materials parts components. The values for dead loads in table 3 2 are for commonly used materials and constructions in light frame residential buildings. 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.

Building materials are not dead loads until constructed in permanent position. In other words the weight is distributed or shared uniformly by the members in the floor or roof system.