Construction Calculators

Hip and Valley Factor Calculator, Table, and Guide

A hip on an asphalt shingle roof.

I participate in the Amazon affiliate program and may earn commissions from purchases made through links on this page. Introduction In this article, I’m going to explain what a hip and valley factor is, show you the math, and give you a pretty comprehensive table where you can look up the hip and valley factors …

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2×6 Lumber Weight Chart & Calculator | Wood Type & Length

A stack of spruce 2x6 lumber. The weight of these boards is about 1.6 pounds per foot.

Introduction Knowing material weights is extremely important when you’re planning on putting things on top of a roof. You have to avoid structural loads that exceed the design strength of the roof and the roof’s supporting structure. I thought it would be helpful to have an easy way to look up the weight of 2×6 …

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How to Express Roof Slope: Three Standard Methods

Table showing the different ways to express roof slope.

I participate in the Amazon affiliate program and may earn commissions from purchases made through links on this page. Introduction There are three basic ways to express roof slope. Roof slope can be given in degrees, as a percentage, or as a rise-in-run ratio, otherwise known as standard roof pitch. 1. When you express roof …

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Roof Pitch Multiplier: Calculator, Table & Guide

I participate in the Amazon affiliate program and may earn commissions from purchases made through links on this page. What is a Roof Pitch Multiplier? A roof pitch multiplier, also called a roof pitch factor, is a number that you use to find the actual surface area of a pitched roof or the length of a common rafter. …

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Snow Weight Calculator • Snow Density Chart • Snow Types

Light snow on a roof.

I participate in the Amazon affiliate program and may earn commissions from purchases made through links on this page. Introduction The weight of snow is a vital piece of information. There are parts of the building code that are based on knowing how much additional weight a structure will need to support due to the …

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