Why do the dollar totals in the self-performed option of boxed-in elevated CIP slab example included in this chapter not exactly match the values in Figure 11.3?

Figure 11.3

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Project: Dunn Lumber Location: Seattle, WA Arch./Engr.: Flad CIP Concrete Description Interior Spot Footings Continuous Footings Grade Beams SOG Columns Fnd'n & Shear Walls Elevated Slabs Composite Decks Miscellaneous Concrete Site Concrete Total CIP Concrete: Wage Check $/Hour: Assembly Check $/CY: Qty City Construction Company Cost Recapitulation Summary Sheet Unit 957 CY 102 CY 117 CY 721 CY 267 CY CY 2,324 4,156 CY 1,283 CY 200 CY 600 10,727 CY CY Man Labor Hours Cost 1,773 764 665 1,804 2,700 18,900 Date: June 10, 2021 Estimator: P. Jacobs Estimate #: 1 3,060 $119,340 56,281 $2,216,687 Material Cost $69,528 $193,030 $262,558 $31,325 $23,760 $55,085 $27,273 $28,000 $55,273 $66,907 $136,592 $203,499 $102,597 $78,000 $180,597 $718,200 $554,750 $1,272,950 $2,077,117 $256,600 $320,750 $577,350 $41,800 $53,600 $95,400 19,100 $783,117 $1,294,000 6,415 1,100 Checks? Yes Checks? High, but decks and shear Wls Total Cost $120,600 $239,940 $2,803,082 $5,019,769 $/HR: $/CY: $39.39 $467.96