Building 765, New Workshop and Storage Addition

Estimated Cost

Description Unit Quantity Unit Cost Total Cost

Excavate an area for the new sump. Sump is 5' x 5' 

x 12' deep. Assume over excavate 3' on all sides. 

Clay, till or blasted rock, 3/4 cubic yd bucket

Cubic yard 28.4 $21.00 $597

Trench for concrete spread footings. Footings are 1' 

deep, 24" wide around base of tank walls. By hand, 

heavy soils.

Cubic yard 1 $102 $151

Trim bottom and sides of spread footing trench for 

concrete pour. Square foot 40 $0.86 $34.40

Pour concrete footings in footing trench. Concrete is 

pumped, continuous flow. Cubic yard 1 $29.00 $42.96

Construct forms for sump tank concrete walls. 

Forms are 1-use, below grade, job built

Square foot 

contact area 480 $15.40 $7,392.00

Concrete reinforcing steel in place. Walls, #5 bar at 

4.17 lbs/square foot of wall. Ton 1 $1,650.00 $825.66

Pour concrete into floor and wall forms. Assume 

Redy-Mix concrete is 3,000 psi delivered and 

pumped. Includes concrete plus labor and 

equipment. Sump walls are 6" thick

Cubic yard 4 $140.50 $624.44

Concrete finishing of sump floor. Assume bull float, 

broom finish with edging and joints. Square foot 25 $0.72 $18.00

Concrete finishing of walls. Bush hammer, green 

concrete Square foot 240 $2.81 $674.40

Subtotal Direct Cost: $10,360

Plumbing 

(piping of water into sump, through-wall discharge 

piping, etc.)

13.3 $1,378

Mechanical systems 

(Supports for pumps, electrical, ladder, cover 

supports, etc, etc)

17.5 $1,813

Electrical systems 

(wiring, lighting, outlets, switches, etc.) NA $0

Instrumentation 

(PLCs, sensors, hardware, software, etc.) NA $0

Sitework (clearing, grading, surveying) 14.0 $1,450

Total Direct Cost: $15,002

% of subtotal direct cost

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Page 1 of 6 December 2002
Building 765, New Workshop and Storage Addition

Estimated Cost

Engineering 8.0 $1,200

Permits 2.0 $300

Scheduling 0.8 $120

Performance bonds 2.5 $375

Insurance

(risk, equipment floater, public liability) 2.3 $345

Contractor markup (handling, procuring, 

subcontracting, change orders, etc.) 10.0 $1,500

Overhead and profit 10.0 $1,500

Total Indirect Cost: $5,341

Total Base Cost: $20,342

% of total direct cost

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Page 2 of 6 December 2002
Building 765, New Workshop and Storage Addition

Estimated Cost

Notes:

1. Costs and cost factors obtained from RSMeans Building Construction Cost Data, 68th Edition, 2010.

2. Assume the sump provides 0.25 hr of residence time at maximum flow 

Page 3 of 6 December 2002
Building 765, New Workshop and Storage Addition

Estimated Cost

Notes

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Page 4 of 6 December 2002
Building 765, New Workshop and Storage Addition

Estimated Cost

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Page 5 of 6 December 2002
Building 765, New Workshop and Storage Addition

Estimated Cost

Page 6 of 6 December 2002
Building 765, New Workshop and Storage Addition

Estimated Cost

Description Unit Quantity Unit Cost Total Cost

Excavate an area for the new sump. Sump is 7' x 7' 

x 12' deep. Assume over excavate 3' on all sides. 

Clay, till or blasted rock, 3/4 cubic yd bucket

Cubic yard 44.4 $21.00 $933

Trench for concrete spread footings. Footings are 1' 

deep, 24" wide around base of tank walls. By hand, 

heavy soils.

Cubic yard 2 $102 $212

Trim bottom and sides of spread footing trench for 

concrete pour. Square foot 56 $0.86 $48.16

Pour concrete footings in footing trench. Concrete is 

pumped, continuous flow. Cubic yard 2 $29.00 $60.15

Construct forms for sump tank concrete walls. 

Forms are 1-use, below grade, job built

Square foot 

contact area 672 $15.40 $10,348.80

Concrete reinforcing steel in place. Walls, #5 bar at 

4.17 lbs/square foot of wall. Ton 1 $1,650.00 $1,155.92

Pour concrete into floor and wall forms. Assume 

Redy-Mix concrete is 3,000 psi delivered and 

pumped. Includes concrete plus labor and 

equipment. Sump walls are 6" thick

Cubic yard 6 $140.50 $874.22

Concrete finishing of sump floor. Assume bull float, 

broom finish with edging and joints. Square foot 49 $0.72 $35.28

Concrete finishing of walls. Bush hammer, green 

concrete Square foot 336 $2.81 $944.16

Subtotal Direct Cost: $14,612

Plumbing 

(piping of water into sump, through-wall discharge 

piping, etc.)

13.3 $1,943

Mechanical systems 

(Supports for pumps, electrical, ladder, cover 

supports, etc, etc)

17.5 $2,557

Electrical systems 

(wiring, lighting, outlets, switches, etc.) NA $0

Instrumentation 

(PLCs, sensors, hardware, software, etc.) NA $0

Sitework (clearing, grading, surveying) 14.0 $2,046

Total Direct Cost: $21,158

% of subtotal direct cost

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Page 1 of 6 December 2002
Building 765, New Workshop and Storage Addition

Estimated Cost

Engineering 8.0 $1,693

Permits 2.0 $423

Scheduling 0.8 $169

Performance bonds 2.5 $529

Insurance

(risk, equipment floater, public liability) 2.3 $487

Contractor markup (handling, procuring, 

subcontracting, change orders, etc.) 10.0 $2,116

Overhead and profit 10.0 $2,116

Total Indirect Cost: $7,532

Total Base Cost: $28,690

% of total direct cost

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% of total direct cost

% of total direct cost

Page 2 of 6 December 2002
Building 765, New Workshop and Storage Addition

Estimated Cost

Notes:

1. Costs and cost factors obtained from RSMeans Building Construction Cost Data, 68th Edition, 2010.

2. Assume the sump provides 0. 25 hr of residence time at maximum flow 

Page 3 of 6 December 2002
Building 765, New Workshop and Storage Addition

Estimated Cost

Notes

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Page 4 of 6 December 2002
Building 765, New Workshop and Storage Addition

Estimated Cost

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Page 5 of 6 December 2002
Building 765, New Workshop and Storage Addition

Estimated Cost

Page 6 of 6 December 2002
Building 765, New Workshop and Storage Addition

Estimated Cost

Description Unit Quantity Unit Cost Total Cost

Excavate an area for the new sump. Sump is 9' x 9' 

x 12' deep. Assume over excavate 3' on all sides. 

Clay, till or blasted rock, 3/4 cubic yd bucket

Cubic yard 64.0 $21.00 $1,344

Trench for concrete spread footings. Footings are 1' 

deep, 24" wide around base of tank walls. By hand, 

heavy soils.

Cubic yard 3 $102 $272

Trim bottom and sides of spread footing trench for 

concrete pour. Square foot 72 $0.86 $61.92

Pour concrete footings in footing trench. Concrete is 

pumped, continuous flow. Cubic yard 3 $29.00 $77.33

Construct forms for sump tank concrete walls. 

Forms are 1-use, below grade, job built

Square foot 

contact area 864 $15.40 $13,305.60

Concrete reinforcing steel in place. Walls, #5 bar at 

4.17 lbs/square foot of wall. Ton 1 $1,650.00 $1,486.19

Pour concrete into floor and wall forms. Assume 

Redy-Mix concrete is 3,000 psi delivered and 

pumped. Includes concrete plus labor and 

equipment. Sump walls are 6" thick

Cubic yard 8 $140.50 $1,124.00

Concrete finishing of sump floor. Assume bull float, 

broom finish with edging and joints. Square foot 81 $0.72 $58.32

Concrete finishing of walls. Bush hammer, green 

concrete Square foot 432 $2.81 $1,213.92

Subtotal Direct Cost: $18,943

Plumbing 

(piping of water into sump, through-wall discharge 

piping, etc.)

13.3 $2,519

Mechanical systems 

(Supports for pumps, electrical, ladder, cover 

supports, etc, etc)

17.5 $3,315

Electrical systems 

(wiring, lighting, outlets, switches, etc.) NA $0

Instrumentation 

(PLCs, sensors, hardware, software, etc.) NA $0

Sitework (clearing, grading, surveying) 14.0 $2,652

Total Direct Cost: $27,430

% of subtotal direct cost

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% of subtotal direct cost

Page 1 of 6 December 2002
Building 765, New Workshop and Storage Addition

Estimated Cost

Engineering 8.0 $2,194

Permits 2.0 $549

Scheduling 0.8 $219

Performance bonds 2.5 $686

Insurance

(risk, equipment floater, public liability) 2.3 $631

Contractor markup (handling, procuring, 

subcontracting, change orders, etc.) 10.0 $2,743

Overhead and profit 10.0 $2,743

Total Indirect Cost: $9,765

Total Base Cost: $37,195

% of total direct cost

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% of total direct cost

% of total direct cost

Page 2 of 6 December 2002
Building 765, New Workshop and Storage Addition

Estimated Cost

Notes:

1. Costs and cost factors obtained from RSMeans Building Construction Cost Data, 68th Edition, 2010.

2. Assume the sump provides 0.25 hr of residence time at maximum flow 

Page 3 of 6 December 2002
Building 765, New Workshop and Storage Addition

Estimated Cost

Notes

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Page 4 of 6 December 2002
Building 765, New Workshop and Storage Addition

Estimated Cost

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Page 5 of 6 December 2002
Building 765, New Workshop and Storage Addition

Estimated Cost

Page 6 of 6 December 2002
Building 765, New Workshop and Storage Addition

Estimated Cost

Description Unit Quantity Unit Cost Total Cost

Excavate an area for the new sump. Sump is 11' x 

11' x 12' deep. Assume over excavate 3' on all 

sides. Clay, till or blasted rock, 3/4 cubic yd bucket

Cubic yard 87.1 $21.00 $1,829

Trench for concrete spread footings. Footings are 1' 

deep, 24" wide around base of tank walls. By hand, 

heavy soils.

Cubic yard 3 $102 $332

Trim bottom and sides of spread footing trench for 

concrete pour. Square foot 88 $0.86 $75.68

Pour concrete footings in footing trench. Concrete is 

pumped, continuous flow. Cubic yard 3 $29.00 $94.52

Construct forms for sump tank concrete walls. 

Forms are 1-use, below grade, job built

Square foot 

contact area 1,056 $15.40 $16,262.40

Concrete reinforcing steel in place. Walls, #5 bar at 

4.17 lbs/square foot of wall. Ton 1 $1,650.00 $1,816.45

Pour concrete into floor and wall forms. Assume 

Redy-Mix concrete is 3,000 psi delivered and 

pumped. Includes concrete plus labor and 

equipment. Sump walls are 6" thick

Cubic yard 10 $140.50 $1,373.78

Concrete finishing of sump floor. Assume bull float, 

broom finish with edging and joints. Square foot 121 $0.72 $87.12

Concrete finishing of walls. Bush hammer, green 

concrete Square foot 528 $2.81 $1,483.68

Subtotal Direct Cost: $23,355

Plumbing 

(piping of water into sump, through-wall discharge 

piping, etc.)

13.3 $3,106

Mechanical systems 

(Supports for pumps, electrical, ladder, cover 

supports, etc, etc)

17.5 $4,087

Electrical systems 

(wiring, lighting, outlets, switches, etc.) NA $0

Instrumentation 

(PLCs, sensors, hardware, software, etc.) NA $0

Sitework (clearing, grading, surveying) 14.0 $3,270

Total Direct Cost: $33,819

% of subtotal direct cost

% of subtotal direct cost

% of subtotal direct cost

% of subtotal direct cost

% of subtotal direct cost

Page 1 of 6 December 2002
Building 765, New Workshop and Storage Addition

Estimated Cost

Engineering 8.0 $2,705

Permits 2.0 $676

Scheduling 0.8 $271

Performance bonds 2.5 $845

Insurance

(risk, equipment floater, public liability) 2.3 $778

Contractor markup (handling, procuring, 

subcontracting, change orders, etc.) 10.0 $3,382

Overhead and profit 10.0 $3,382

Total Indirect Cost: $12,039

Total Base Cost: $45,858

% of total direct cost

% of total direct cost

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% of total direct cost

% of total direct cost

% of total direct cost

% of total direct cost

Page 2 of 6 December 2002
Building 765, New Workshop and Storage Addition

Estimated Cost

Notes:

1. Costs and cost factors obtained from RSMeans Building Construction Cost Data, 68th Edition, 2010.

2. Assume the sump provides 0.25 hr of residence time at maximum flow 

Page 3 of 6 December 2002
Building 765, New Workshop and Storage Addition

Estimated Cost

Notes

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Page 4 of 6 December 2002
Building 765, New Workshop and Storage Addition

Estimated Cost

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Page 5 of 6 December 2002
Building 765, New Workshop and Storage Addition

Estimated Cost

Page 6 of 6 December 2002
Building 765, New Workshop and Storage Addition

Estimated Cost

Description Unit Quantity Unit Cost Total Cost

Excavate an area for the new sump. Sump is 13' x 

13' x 12' deep. Assume over excavate 3' on all 

sides. Clay, till or blasted rock, 3/4 cubic yd bucket

Cubic yard 113.8 $21.00 $2,389

Trench for concrete spread footings. Footings are 1' 

deep, 24" wide around base of tank walls. By hand, 

heavy soils.

Cubic yard 4 $102 $393

Trim bottom and sides of spread footing trench for 

concrete pour. Square foot 104 $0.86 $89.44

Pour concrete footings in footing trench. Concrete is 

pumped, continuous flow. Cubic yard 4 $29.00 $111.70

Construct forms for sump tank concrete walls. 

Forms are 1-use, below grade, job built

Square foot 

contact area 1,248 $15.40 $19,219.20

Concrete reinforcing steel in place. Walls, #5 bar at 

4.17 lbs/square foot of wall. Ton 1 $1,650.00 $2,146.72

Pour concrete into floor and wall forms. Assume 

Redy-Mix concrete is 3,000 psi delivered and 

pumped. Includes concrete plus labor and 

equipment. Sump walls are 6" thick

Cubic yard 12 $140.50 $1,623.56

Concrete finishing of sump floor. Assume bull float, 

broom finish with edging and joints. Square foot 169 $0.72 $121.68

Concrete finishing of walls. Bush hammer, green 

concrete Square foot 624 $2.81 $1,753.44

Subtotal Direct Cost: $27,848

Plumbing 

(piping of water into sump, through-wall discharge 

piping, etc.)

13.3 $3,704

Mechanical systems 

(Supports for pumps, electrical, ladder, cover 

supports, etc, etc)

17.5 $4,873

Electrical systems 

(wiring, lighting, outlets, switches, etc.) NA $0

Instrumentation 

(PLCs, sensors, hardware, software, etc.) NA $0

Sitework (clearing, grading, surveying) 14.0 $3,899

Total Direct Cost: $40,324

% of subtotal direct cost

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Page 1 of 6 December 2002
Building 765, New Workshop and Storage Addition

Estimated Cost

Engineering 8.0 $3,226

Permits 2.0 $806

Scheduling 0.8 $323

Performance bonds 2.5 $1,008

Insurance

(risk, equipment floater, public liability) 2.3 $927

Contractor markup (handling, procuring, 

subcontracting, change orders, etc.) 10.0 $4,032

Overhead and profit 10.0 $4,032

Total Indirect Cost: $14,355

Total Base Cost: $54,679

% of total direct cost

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Page 2 of 6 December 2002
Building 765, New Workshop and Storage Addition

Estimated Cost

Notes:

1. Costs and cost factors obtained from RSMeans Building Construction Cost Data, 68th Edition, 2010.

2. Assume the sump provides 0.25 hr of residence time at maximum flow 

Page 3 of 6 December 2002
Building 765, New Workshop and Storage Addition

Estimated Cost

Notes

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Page 4 of 6 December 2002
Building 765, New Workshop and Storage Addition

Estimated Cost

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Page 5 of 6 December 2002
Building 765, New Workshop and Storage Addition

Estimated Cost

Page 6 of 6 December 2002
Summary Cost Curve

Flow (gpm) Building Cost

138 $20,342

298 $28,690

452 $37,195

788 $45,858

1030 $54,679

y = 36.917x + 17373

R2 = 0.9792

$0

$10,000

$20,000

$30,000

$40,000

$50,000

$60,000

0 200 400 600 800 1000 1200

Regression Curve