Roof Live Load Solution

STEP 0: Pre-Calculation Summary
Formula Used
Roof Live Load = 20*Reduction Factor for Size of Tributary Area*Reduction Factor for Slope of Roof
Lf = 20*R1*R2
This formula uses 3 Variables
Variables Used
Roof Live Load - (Measured in Newton) - Roof Live Load is the load to which roof is subjected in addition to its own weight.
Reduction Factor for Size of Tributary Area - Reduction Factor for Size of Tributary Area is the factor by which the size of tributary area reduces.
Reduction Factor for Slope of Roof - The Reduction Factor for Slope of Roof is the factor by which the slope of the roof reduces.
STEP 1: Convert Input(s) to Base Unit
Reduction Factor for Size of Tributary Area: 1.01 --> No Conversion Required
Reduction Factor for Slope of Roof: 0.9 --> No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Lf = 20*R1*R2 --> 20*1.01*0.9
Evaluating ... ...
Lf = 18.18
STEP 3: Convert Result to Output's Unit
18.18 Newton --> No Conversion Required
FINAL ANSWER
18.18 Newton <-- Roof Live Load
(Calculation completed in 00.004 seconds)

Credits

Created by Mridul Sharma
Indian Institute of Information Technology (IIIT), Bhopal
Mridul Sharma has created this Calculator and 200+ more calculators!
Verified by Suraj Kumar
Birsa Institute of Technology (BIT), Sindri
Suraj Kumar has verified this Calculator and 600+ more calculators!

3 Roof Live Loads Calculators

Roof Live Load
Go Roof Live Load = 20*Reduction Factor for Size of Tributary Area*Reduction Factor for Slope of Roof
Tributary Area given Roof Live Load
Go Tributary Area = 1000*(1.2-(Roof Live Load/(20*Reduction Factor for Slope of Roof)))
Roof Live Load when Tributary Area Les in Range 200 to 600 square feet
Go Roof Live Load = 20*(1.2-0.001*Tributary Area)*Reduction Factor for Slope of Roof

Roof Live Load Formula

Roof Live Load = 20*Reduction Factor for Size of Tributary Area*Reduction Factor for Slope of Roof
Lf = 20*R1*R2

What is Live Load?

Live load is the load to which a structure is subjected in addition to its own weight. In other words, it is the extra weight put on a structure apart from the weight of structure itself .

How to Calculate Roof Live Load?

Roof Live Load calculator uses Roof Live Load = 20*Reduction Factor for Size of Tributary Area*Reduction Factor for Slope of Roof to calculate the Roof Live Load, The Roof Live Load is defined as the live load for a roof which is equivalent to 20 times the product of reduction factors for tributary area and slope of roof. Roof Live Load is denoted by Lf symbol.

How to calculate Roof Live Load using this online calculator? To use this online calculator for Roof Live Load, enter Reduction Factor for Size of Tributary Area (R1) & Reduction Factor for Slope of Roof (R2) and hit the calculate button. Here is how the Roof Live Load calculation can be explained with given input values -> 18.18 = 20*1.01*0.9.

FAQ

What is Roof Live Load?
The Roof Live Load is defined as the live load for a roof which is equivalent to 20 times the product of reduction factors for tributary area and slope of roof and is represented as Lf = 20*R1*R2 or Roof Live Load = 20*Reduction Factor for Size of Tributary Area*Reduction Factor for Slope of Roof. Reduction Factor for Size of Tributary Area is the factor by which the size of tributary area reduces & The Reduction Factor for Slope of Roof is the factor by which the slope of the roof reduces.
How to calculate Roof Live Load?
The Roof Live Load is defined as the live load for a roof which is equivalent to 20 times the product of reduction factors for tributary area and slope of roof is calculated using Roof Live Load = 20*Reduction Factor for Size of Tributary Area*Reduction Factor for Slope of Roof. To calculate Roof Live Load, you need Reduction Factor for Size of Tributary Area (R1) & Reduction Factor for Slope of Roof (R2). With our tool, you need to enter the respective value for Reduction Factor for Size of Tributary Area & Reduction Factor for Slope of Roof and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
How many ways are there to calculate Roof Live Load?
In this formula, Roof Live Load uses Reduction Factor for Size of Tributary Area & Reduction Factor for Slope of Roof. We can use 1 other way(s) to calculate the same, which is/are as follows -
  • Roof Live Load = 20*(1.2-0.001*Tributary Area)*Reduction Factor for Slope of Roof
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