Rebar spacing is calculated so that each square foot of reinforced area is sufficient for its load and can be calculated using a rebar spacing calculator. Taking grade, size, spacing and location into consideration, calc... More »

Online calculators are used in the same manner as hand-held calculators. Calculations can be formulated online or the calculator can be downloaded to your computer. The numbers that require calculation can be inputted fr... More » Math Math Calculators

The calculators on,, and are some examples of online stair calculators. The stair calculator on is the simplest one, requiring only two dimensions of the stair... More » Home & Garden Home Maintenance Carpentry

A generator sizing calculator works out the size of generator needed for a particular load. The calculator typically asks about the type of appliances in use or the power demand and shows a suitable generator. Calculatin... More » Home & Garden Outdoor

Build a backyard fire pit using concrete blocks or bricks, rebar stake and shovel. Mark a circle in the area with the stake, string and shovel, and dig a small area for the wood. Complete the pit with rocks, bricks or bl... More » Home & Garden Outdoor

One way to build a pond is to dig a hole, install electrical lines and water pipes, line the hole with rebar and concrete, coat it with pond sealant, and install a water pump. This procedure usually takes about one week ... More » Home & Garden Outdoor

A wheelbarrow generally consists of one wheel and two handles that are used to push a barrel-type container with a small load from one location to another. Replacement parts include the wheel, inner tube for the wheel an... More » Home & Garden Outdoor