Calculate total floor load capacity from dimensions and live/dead load ratings, or find the required rating for a planned uniformly distributed weight.

Use the specified uniformly distributed live-load rating for the floor.

Permanent floor-system weight; leave blank to use zero.

Floor Weight Capacity Formula

The following two example problems outline the steps and information needed to calculate the Floor Weight Capacity.

FC = FA * CPA

Variables:

  • FC is the Floor Weight Capacity (lbs)
  • FA is the total floor area (ft^2) 
  • CPA is the capacity per unit of area (lb/ft^2)
    • The average wood floor will hold 8-10 lb/ft^2.

To calculate the floor weight capacity, multiply the total floor area by the capacity per unit area.

How to Calculate Floor Weight Capacity?

The following steps outline how to calculate the Floor Weight Capacity.

Example Problem #1:

  1. First, determine the total floor area (ft^2).
    • The total floor area (ft^2) is given as:: 1200.
  2. Next, determine the capacity per unit of area (lb/ft^2).
    • The capacity per unit of area (lb/ft^2) is provided as: 25.
  3. Finally, calculate the Floor Weight Capacity using the equation above: 

FC = FA * CPA

The values provided above are inserted into the equation below and computed.

FC = 1200 * 25 = 30,000 (lbs)

Example Problem #2: 

For this problem, the variables required are provided below:

total floor area (ft^2) = 1000

capacity per unit of area (lb/ft^2) = 30

Test your knowledge and check your answer with the calculator..

FC = FA * CPA = ?