Floor Live Load Capacity

Live loads refer to the dynamic forces from occupancy and intended use. For example the live load for a room in a single family residence will be significantly smaller than the live load for an area of equal size at a movie theatre or sporting event. Location and configuration of heavy loads should be looked at on a case by case basis.

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Live Loads For Different Buildings Floors And Structures

For example a floor joist at 16 spacing s that can carry 53 pounds per linear foot would translate into a 318 pound single point load at its center.

Floor live load capacity.

Attics no storage with roof slope no steeper than 3 in 12. Dead load weight of structure and fixed loads 10 lbs ft 2. Online free live maximum floor live load capacity is a great engineering tool to help you calculate floor strength use it now. 1 psf lb f ft 2 47 88 n m 2.

This sets an allowable first floor live load of 40 psf a dead load of 10 psf and a deflection of l 360. The acceptable live load will vary considerably based on the occupancy and expected use of a structure or structural element. With an evenly distributed live load of 30 psf which the tables show the floor is able to support the total weight on the floor would be about 3 360 pounds. Figure 2 live loads and deflection limits are set by code.

Also measured in psf these loads include the anticipated weight of people furniture appliances automobiles moveable equipment and the like. For this example i ll use the cabo one and two family dwelling code which serves as the model for many state and local codes. 1 ft 0 3048 m. About onlinecalculators online calculators and converters have been developed to make calculations easy these calculators are great tools for mathematical algebraic numbers engineering physics problems.

Use live load psf n m 2. How live load codes work. Increasing the total weight on the floor to 4 480 pounds however results in a live load of 40 psf which is beyond the floor s load capacity. Live load is weight of furniture wind snow and more.

2 grade of douglas fir are indicated below. They represent the transient forces that can be moved through the building or act on any particular structural element. For especially heavy loads it is recommended to have a structural engineer research the floor framing. Maximum floor joist span for no.