![](https://civil-gang.com/wp-content/uploads/2023/10/purlin-span-calculator-1024x576.jpg)
What is a Purlin Span Calculator?
A Purlin Span Calculator is a tool used to calculate the maximum span or spacing between purlins, which are horizontal beams or members used to support the load of a roof.
It helps ensure that the purlin spacing is appropriate for the roofing material and design to prevent structural issues like sagging or deflection.
Why Use a Purlin Span Calculator?
- Structural Integrity: Calculating the correct purlin span ensures that the roof structure can adequately support the weight of roofing materials, snow loads, and other loads.
- Material Efficiency: It helps optimize the use of purlins by determining the minimum number required for a given roof design.
- Cost Efficiency: Proper purlin spacing can result in cost savings by reducing the amount of material needed for the project.
Purlin Span Calculator
How to Use a Purlin Span Calculator:
- Input the width of the roof (in feet), which is the horizontal distance from one edge of the roof to the other.
- Input the roof slope (in inches of rise per foot of run), which represents the angle of the roof.
- Enter the desired purlin spacing (in feet), which is the distance between adjacent purlins.
- Click the "Calculate" button.
- The calculator will provide the maximum recommended purlin span (in feet) based on the input parameters.
Example Calculation:
Let's say you have the following parameters:
- Roof Width (W): 24 feet
- Roof Slope (S): 4 inches of rise per foot of run
- Desired Purlin Spacing (D): 4 feet
Using these values in the provided HTML code:
- Roof Slope (in radians) ≈ atan(4/12) ≈ 0.321 radians
- Purlin Span ≈ 24 feet / (tan(0.321 radians) * 4 feet) ≈ 31.07 feet
So, the maximum recommended purlin span is approximately 31.07 feet for the given roof width, slope, and desired purlin spacing.
This calculation helps ensure the structural integrity of the roof.
Note
Like this post? Share it with your friends!
Suggested Read –
- LvL Calculator
- Sand Calculator
- Glulam Calculator
- LvL Size Calculator
- LvL Load Calculator
- Lvl Beam Calculator
- LvL Span Calculator
- Lvl Spans Calculator
- Beam Calculator LvL
- Lam Beam Calculator
- LvL Weight Calculator
- LvL Header Calculator
- Slab Weight Calculator
- Glulam Cost Calculator
- Brick Weight Calculator
- Glulam Span Calculator
- Pergola Span Calculator
- Yards to Tons Calculator
- Header Beam Calculator
- Glulam Beam Calculator
- C Purlin Span Calculator
- Lvl Beam Size Calculator
- Lvl Beam Cost Calculator
- Sonotube Calculator Bags
- Glulam Weight Calculator
- LvL Span Table Calculator
- LvL Beam Span Calculator
- Microlam Beam Calculator
- Pergola Spacing Calculator
- LvL Ridge Beam Calculator
- Concrete Calculator Weight
- Weight Calculator Concrete
- Door Header Size Calculator
- Concrete Weights Calculator
- LvL Beam Calculator Online
- Pergola Post Size Calculator
- Laminated Beam Calculator
- LvL Header Span Calculator
- Wood Beam Cost Calculator
- Engineered Beam Calculator
- LvL Beam Weight Calculator
- Dump Truck Load Calculator
- Glulam Beam Size Calculator
- Glulam Beam Cost Calculator
- Pergola Rafter Size Calculator
- Weight of Concrete Calculator
- Glulam Beam Span Calculator
- Pergola Beam Span Calculator
- Span Calculator for Lvl Beams
- Steel Gate Post Size Calculator
- Cubic Yards to Tons Calculator
- Pavilion Beam Span Calculator
- Microlam Beam Size Calculator
- Window Header Size Calculator
- Tons to Yards Calculator Gravel
- 30×40 Concrete Slab Calculator
- Glulam Beam Weight Calculator
- Concrete Slab Weight Calculator
- Concrete Calculator for Cylinder
- Concrete Calculator for Cylinders
- Pergola Rafter Spacing Calculator
- 94 Lb Portland Cement Calculator
- Cured Concrete Weight Calculator
- Gravel Shed Foundation Calculator
- Weight of Concrete Slab Calculator
- Garage Door Header Size Calculator
- Weight of Cured Concrete Calculator
- Concrete Cylinder Weight Calculator
- Asphalt Cubic Yards to Tons Calculator
- Concrete Weight Calculator by Dimensions
- How Much Pea Gravel Do I Need Calculator
- How Many Bricks Per Square Foot Calculator
- Interior Load Bearing Wall Header Calculator
- How Many Bags of Portland Cement Do I Need Calculator
Leave a Reply