Detailed Estimate

AS FOLLOWS;

LABOR RATE - (INCL. BENEFITS ALLOWANCES)

CONSTRUCTION STAFF - 10120% LABOR RATE

(EARTHMOVING HIGH COST- INSULATION LOW COST)

FIELD COSTS - 30140% I I

OVERHEAD fr PROFIT ~ 20% I I

ALL IM LABOR COST- 70/120% I I

JUDGEMENT IS REQUIRED TO ASSESS SPECIFIC PERCENTAGES FROM ABOVE RANGES. SIZE, WORK TYPE AND JOB CONDS. ARE SIGNIFICANT ELEMENTS.

Figure 6-21. Typical Data Points - Construction

The following are typical data points for evaluating estimating levels or monitoring project performance.

This data applies to large U.S. process plants. Adjustments should be made for overseas locations and for small plants.

Construction

The following rates do not include handling, scaffolding, testing, or rework.

• Site strip — manhours per square yard 0.2 0.3

• Machine excavation — manhours per cubic yard 0.5 0.7

• Hand excavation — manhours per cubic yard 2.0 2.6

• Underground C.S. pipe — manhours per foot 1.0 1.3 (2"-IO")

• Underground plastic pipe - manhours per foot 0.5 0.7 (1/2"-10")

• Concrete foundations (incl. formwork, rebar, 20/25 26/32 (etc.) - manhours per cubic yard

Structural Steel

• Erect heavy steel (100 lbs per foot) - 12 16 manhours per ton

• Erect light steel (20 lbs per foot) - 36 47 manhours per ton

• Install platforms, ladders, etc. - manhours per ton 40 52

Figure 6-22. Typical Data Points — Construction

The following are typical data points for evaluating estimating levels or monitoring project performance.

This data applies to large U.S. process plants. Adjustments should be made for overseas locations and for small projects.

Construction

The following rates do not include handling, scaffolding, testing, or rework.

Eauipment

U.S.

NOR.

Install pumps {0-1OHP) — rnanhours per each

20

26

Install pumps (10-100HP) - manhours per each

45

58

Install compressors (large) — manhours per ton

20

26

Install exchangers (S&T) — manhours per each

6

8

manhours per ton

0.7

0.9

Install towers/vessels — manhours per ton

2

2.6

Install vessel internals - manhours per ton

120

156

Eiping (including pipe supports and testing)

Prefabricate — all sizes — manhours per ton

801100

1051130

Erect piping (0-2%")— manhours per foot

0.6/1.0

0.8/1.3

Erect piping (3"-8") — manhours per foot

1.5

2

Erect piping (10"-20") — manhours per foot

2.0

2.6

Erect piping (3"-8") — manhours per ton

200

260

Erect piping (10"-20") — manhours per ton

250

325

Figure 6-23. Productivity Loss for Extended Workweek.

BOS.

Ftriiuriuir flunftFT RASIS

Figure 6-23. Productivity Loss for Extended Workweek.

Ftriiuriuir flunftFT RASIS

BOS.

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