1. PS&E – Plans, specifications and estimate
Estimating
PS&E – Plans, specifications and estimate

2. Types of Estimates Ball-Park (Planning phase)
Preliminary (Design Report/EIS)
Detailed (PS&E---Detailed Design)

3. Estimate Quality Good book-keeping Accurate backup of quantities
Familiarity w/ project
Experience

5. Estimating Procedure List all item numbers-plans and similar plans
Estimate quantities and prepare a backup for each item #
Assign prices to each item (WAIPR)
Lump sum price analysis
Summary of quantities
Add contingency
Summarize final costs

6. Item Numbers Referenced to spec book Examples:
Clearing and Grubbing
203.xxxx Grade and Reshape Ditches
304.xx Subbase
Establish Turf
Survey and Stakeout
*Special specifications—General or Special (must be approved)

7. Units Unit abbreviations Definition LS Lump Sum EA Each CY Cubic YardSY
Square Yard LF
Linear Feet TN
Ton MO
Month

8. Units-Metric Unit abbreviations Definition CM Cubic Meters SQM
Square meters MT
Metric Ton KG
Kilograms M
Meters

9. Specifications
center/engineering/specifications

10. Specifications-Example 201.06

11. Specifications-Example 201.06

12. Pay Item Catalog (PIC)

13. Weighted Average Item Price Report (WAIPR)

14. WAIPR Example

15. Special Spec Repository

16. Contingency Added to estimate to account for unknowns
Usually a percentage of final cost

17. Cost Estimate Example Item # Description Unit QTY Price Subtotal
Clear & Grub LS
1.0
$12,500.00
Earth Cut & Emb CY
14,545.0
$12.00
$174,540.00
Bale Dikes LF
42.0
$7.50
$315.00
Asph Base Course TN
6392.0
$38.00
$242,896.00
24” RCP End Sec EA
4.0
$700.00
$2,800.00
Office MO 6
$1,000.00
$6,000.00
Traffic Sign 8
$170.00
$1,360.00

18. Backup for Estimate Example ITEM 640
Backup for Estimate Example ITEM (White Paint Reflective Paint Stripes)
2 Shoulder Stripes
Sta to Sta 30+92
2*448’ = 896’
Say 900’

19. Asphalt – English Tons .06865 Tons per Cubic Foot (Base)
Tons per Cubic Foot (Binder)
Tons per Cubic Foot (Top-6F)
Old Marshall Design
New Superpave?????

20. Lump Sum Price Analysis
Estimate for items paid as a “Lump Sum”
Includes:
Labor
Materials
Equipment
Rental costs
Profit and Overhead
Typical lump sum items:
Clearing and Grubbing
Survey and Stakeout
Temporary Traffic Signals

21. Lump Sum Analysis Example Item 619.13 (Temporary Traffic Signal)
Labor Costs
Backhoe Operator-$30.05/hr
Electrician-$32.99/hr
Laborer-$22.95/hr
Prevailing Wages
Installation and Removal of Temp. Poles
1 Backhoe Operator $30.05/hr * 16 hours =
2 $22.95/hr * 16 hours =
Installation and Removal of Temp. Signal Heads
1 $32.99/hr * 16 hours =
2 $22.95/hr * 16 hours =
Installation and Removal of Controller
1 $32.99 * 16 hours =
1 $22.95 * 16 hours =

22. Lump Sum Analysis Example-Cont. Item 619.13 (Temporary Traffic Signal)
Materials
Temporary Poles $1, each
Temporary Signal Heads $ each
Controller, Fixed Time $1,000.00
Misc. Hardwire and Wire $1,000.00
Equipment (Installation and Removal)
1 Bucket $18.00/hr * 24 hours
1 $35.00/hr * 24 hours
Profit and Overhead (20%)

23. Estimate Shares
Highway Bridge Utilities Different Counties

24. Engineer’s Estimate
Quantities included in plans Engineer’s estimate not given to contractor Prices not available to contractor—each contractor provides their own bid Lowest bidder gets the contract