Carpentry FormulasSome useful carpentry mathsThis page contains links to some useful carpentry formulas that I'm always using. Maths was never my favourite subject at school (I don't know if it was anyones) but knowing a few formulas and basic carpentry maths are often helpful in avoiding too much head scratching. I use them to calculate, check for accuracy and for saving lots of time and trouble later on.  Carpenters often use formulas and math when carrying out carpentry jobs such as roofing, to check a building is square and to calculate the length of rafters etc. Quite often knowing and understanding how to calculate something on paper with a formula will save you the time otherwise spent on trial and error, or finding out later that somethings wrong and having to dismantle, or recut and waste timber. Doing things twice is crap..! I'm adding new ones all the time, these are the ones here so far;Click on any one of the links below for more information:Whether building a wall, squaring a frame or installing a door lining it helps to know a few different methods for checking that the workpiece is 'square'. There are tools, measurements and formulas to assist with this, click above for more information. When estimating materials and pricing jobs, like calculating how much flooring you require for example you need to know how to calculate the square area of a room/floor etc. and even the area of a circle/volume of a cyclinder. To bisect an angle is to cut or divide it into two equal angles. There are a couple of different ways to do this, click above for more information. The common rafters are those that run square from the wall plate up to the ridge. Knowing the easiest formula for calculating rafter lengths is essential. Click above for more information. When pricing up work and when setting out stair parts use these formulas to calculate how many you need to meet building regs. When it comes to installing the stair-parts during finish carpentry you'll need this formula to calculate perfectly even spindle spacings.  All the carpentry formulas described on this page plus a whole lot more can all be done with the Construction Master Pro Advanced Construction Math Calculator. I don'y like maths and if I'm tired or not concentrating it's really easy to make costly mistakes. I use the calculator for loads of tasks on site and also when estimating jobs/quantities Carpentry formulas related pages Carpentry Q&A Carpentry manuals Leave carpentry formulas and return to carpentry tips and tricks home page |
