Estimating the Cost for the Concrete Pad Concrete

Estimating the Cost for the Concrete Pad

Concrete Estimating • • • Common Uses of Concrete Reinforcing Bar How Much Will the Concrete Cost? Estimating the Cost of a Pad Cost Estimate Cost Estimator

Common Uses of Concrete • • • Foundations and footings Driveways and sidewalks Floors Retaining walls Piers Columns

Reinforcing Bar Concrete has high compression strength, yet poor tensile strength. Rebar is added to increase the tensile strength.

Reinforcing Bar Rebar is also used to pin one structural element to an adjacent element.

How Much Will the Concrete Cost? Concrete is sold by volume and measured in cubic yards (yd 3).

Estimating the Cost of a Pad size = 16 ft x 18 ft floor 4 in. thick • Convert all units to ft 16 ft, 18 ft, . 333 ft • Calculate volume (L x W x t) • Convert ft 3 to yd 3

Estimating the Cost of a Pad Concrete is typically sold in increments of ½ yd 3 $98/ yard 3 x 4. 0 yards 3 = $392

Estimating the Cost of the Pad • Placed every two feet (max. ) on a grid • Sold in 10 ft lengths • Must be lapped 6 in. to maintain strength • Maintain a 3 in. edge distance 6 in. lap 3 in. edge dist. Rebar

Estimating the Cost of the Pad 3 in. edge dist. Rebar How many 10 ft pieces of rebar are needed? 38 6 in. lap

Estimating the Cost of the Pad Rebar • Each piece of #4 rebar costs $4. 78. 38 x $4. 78 = $181. 64 Other associated costs include material forms, gravel, and labor.

Cost Estimate • A forecast of the cost of a future project • Prepared at different levels of a project – Conceptual Design – Construction Documents – Bid Phase • Includes – – Quantity take-off Material costs Labor rates and costs Equipment costs − Subcontractor quotes − Indirect costs − Profit margin • Completed with cost estimating software

Cost Estimator • Specialize in developing cost information for building projects • Most employed in construction industry • Most have gained experience through working in building construction industry • Employed by – – Owner Project manager Construction Contractor Design professional • May be discipline specific (electrical, structural, etc. )

Concrete Estimating • • • Common Uses of Concrete Reinforcing Bar How Much Will the Concrete Cost? Estimating the Cost of a Pad Cost Estimate Cost Estimator

Image Resources Microsoft, Inc. (n. d. ). Clip art. Retrieved March 18, 2009, from http: //office. microsoft. com/en-us/clipart/default. aspx