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First Line Sales Construction Estimating Formulas & Useful Information Formulas, equations, tables, facts, specifications and
other Measure of Dimensions, Theorem ▪ Formulas, Rectangles, Squares, Triangles & Circles ▪ Board Feet Concrete Estimating ▪ Decimal and Metric Equivalents ▪ Weights, etc. ▪ Metrics ▪ Energy, Electric, Insulation ▪ Drywall Estimating, Door Handing Drywall board installation: Approximate quantities needed for each item per 1,000' of wall to cover. 32 pcs. 4 x 8 panels or 25 pcs. 4 x 10 or 21 pcs. 4 x 12. Face the door on the side of the door where in order to pen the door you must pull it toward you. If the door knob is on the right it is a right hand operating door. If the door knob is on the left it is a left hand operating door. Exterior doors are identified in the same way, but it is also necessary to state that the door is an inswing (swings into the building) or an outswing (swings to the outside of the building). The active door of a Double door will also need to be identified -usually this is done by viewing the door from the outside. It is either a left active or right active panel. It is also wise to check with the manufacturer or sales person before
ordering to make sure that they do it the same way. Miscellaneous Math: 1. Doubling a fraction makes it 1/2 its size. To calculate the angles of multisided objects: Divide 360 by the number of sides and ÷ by 2.
Measure of Dimensions, Theorem This information is believed to be accurate. The Polymer Roof Factory or First Line Sales will not be liable for errors and omissions. Specifications, detail, and other information should be verified by the user.
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