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Found 5 results for the keyword ‘Math’

• Renovation math formulas

Just a few math answers to common renovation questions.How far should steps go up (rise) and how wide should steps be (run)? The rise should not be less than 4 inches or you will stumble on it, nor more than 9 inches or it becomes a ladder. Then within those limits, the rise times the run should...
• Is there a calculator that can calculate board feet? - Yes

Several times I have been asked this question, so I hunted around and found a wonderful little calculator which can do this and much more.It is called Project Calc. It is a regular calculator. Then it is a special calculator that will add, subtract, multiply and divide inches, feet and fraction...
• The mathematical challenge - A Walkway Curve

Don in Winnipeg wanted to make a wooden walkway. He wanted to fan the boards out at the 90 degree corner, but couldn't figure out how to calculate the angle to cut the boards to make them fit. The first important reflection was that the center point of this fanning out should not be right in the...
• Header Flashing End Dams for Windows and Doors

Welcome to the Eakes' Origami Guide to the Building Code -- or "how to actually build new flashing requirements in the building code". Water leaking in around windows and doors represents one of our major construction problems. The building codes seem to be constantly changing in an effort to mi...
• Working with stairs

Paul from Vancouver wants to put some new stairs down to his basement, but he has a very limited opening in the floor above. He wants to know just how do you determine the slope of stairs. In the first photo you can see on the model the triangle formed by stairs as they go to the basement. The t...