3-4-5 or 6-8-10 Rule Squares Up Stairs, Roofs, Walls, Decks We also provide an ARTICLE INDEX for this topic, or you can try the page top or bottom SEARCH BOX as a quick way to find information you need. We also explain how to build a stair or other structure over sloped or 'un-level' ground, how to calculate stair tread depth or riser height from stairway slope in degrees, and we discuss stair step rise & run calculations when we are given only the slope of a stairway, and we explain how to use the tangent function to convert a measured angle into stair step rise & run dimensions. We explain how to use simple measurements & the 6-8-10 rule to square up building framing, decks, roofs, stairs, walls, even windows & doorways. This article describes how we can use a simple tape measure and basic aritematic in framing a building deck, floor, wall or roof to get it square and straight. Triangles & geometry in building framing: We have no relationship with advertisers, products, or services discussed at this website. InspectAPedia tolerates no conflicts of interest.
