Estimating Rebar In Concrete

Three methods of varying accuracy are.

Estimating rebar in concrete.

Estimating reinforcing bars how the bid price is determined by william c. Say 15m x 20m for simplicity as an example. First work out your slab area. Now look up the weight of your rebar.

Reinforcement estimation thumb rule method this simplest method is based on the type of structure and the volume of the reinforced concrete elements. Put those together and your total order is 1 140 feet of rebar. Heavy industrial 130 kg m 3. Multiply the steel per m2 x your slab area.

Multiply that by your 1 140 feet and you ll find you need to order 1 189 pounds of rebar. Para español haga clic aquí. Average values for typical concrete frames. There are different methods for estimating the quantities of reinforcement.

At whitacre engineering we give our clients fast accurate quotes. For a patio it is common to use a 3 bar spaced every 18 24 while for a driveway 4 bar is often used with a 12 18 spacing. If you re using 5 bars for example they come in at just over a pound per foot 1 043 to be precise. Estimating the cost of new concrete involves much more than the price of concrete per yard or meter.

The rebar calculatorcontains equations and data used in working with reinforcement bars rebar in concrete slabs. Rebar a steel reinforcing rod that strengthens concrete is cast into the concrete as part of the construction process. Concrete rebar calculator plan view diagram round measurements to 1 32 1 16 1 8 1 4 1 2 running bar points length left to right. The formulas calculate materials needed for rectangular circular and irregular shaped slabs.

Rebar is often installed in a grid pattern and to estimate the amount needed it will be important to first identify the size and spacing is appropriate for your project. Rebar estimating is a skill that requires experience. One of the steps in pricing concrete is to estimate how much rebar is needed for the project. Reinforcement bar rebar functions.

Lb per ft 100 lb 18 4 00 13 600 2 00 14 2 25 7 650 2 00 11 1 56 5 313 1 00. It has been said many times that an estimator s quantity survey may determine 1 whether the rebar fabricator is successful in securing a certain contract and 2 whether it turns out to be a profitable contract or not. Black chief engineer reinforcing bars piling and construction specialty sales bethlehem steel corporation fabricated deformed concrete reinforcing bars size extras area weight extra per bar size sq. Add in walls and columns.