Magdy Mikhail, P.E., Construction Division

Background

Network level FWD

Oil & Gas activities

Application

Summary & Conclusions

Non-destructive test equipment for pavements Imparts a dynamic load to a pavement structure Simulates a moving wheel load Measures deflection of the pavement surface

Structural capacity/remaining life estimates

Finding in-situ layer moduli

Load transfer efficiency of joints in concrete pavements

Pavement management

Network-level FWD data provides information about the structural load-carrying capacity of the pavement network

Network-level FWD data is collected every 0.5 mile. The traffic control required is a moving operation with a lead vehicle and a crash cushion.

The FWD data collection procedure at each location involves two drops: a seating drop, followed by a drop at the 9,000-pound load level. The second drop is stored in the Pavement Management Information System (PMIS) database, along with the drop location and the pavement temperature measurement.

The PMIS MapZapper has a tool that will provide subgrade modulus, remaining life and pavement stiffness.

The tool can also plot the SSI scores from network-level testing.

The network-level FWD data collection should be focused on the low volume FM and RM roads with limited structural capacity or other highways that are experiencing higher than expected loading.

FM US SH IHEagle Ford 27 3,346 9,187.30 4,313.80 4,002.30 2,053.60Permian Basin 57 10,711 15,074.90 8,611.30 6,197.70 5,539.00Granite Wash 6 708 1,456.80 453.80 739.00 702.20Barnett Shale 33 4,424 12,912.00 6,703.70 6,963.80 5,142.90Haynesville 5 623 2,021.90 744.60 931.90 0.00Total 128 19,812 40,652.90 20,827.20 18,834.70 13,437.70

Lane MileShale Formation # Counties # Expected Wells

Type of Vehicle Number of Axles

Loaded Weight (in pounds)

Empty Weight (in pounds)

One-Way Trips (per Wellsite) Type of Work 18-k ESAL

(per Truck) 18-k ESAL

(per Wellsite)

Drilling Wellsite

Rock Hauler 5 84,000 35,000 70 Pad Construction 2.99 209.30

Rig (install) 5 100,000 n/a 2 Rig Set-up 6.21 12.42

Rig (removal) 5 100,000 n/a 2 Rig Removal 6.21 12.42

Bob-Tail 5 80,000 20,000 20 Equipment 2.45 49.00

Bob-Tail 5 80,000 20,000 20 Equipment 2.45 49.00

Bob-Tail 5 80,000 20,000 8 Drilling Pipe 2.45 19.60

Bob-Tail 5 80,000 20,000 6 Cement 2.45 14.70

Bob-Tail 5 80,000 20,000 9 Drilling Mud 2.45 22.05 Subtotals 137 388.49

Fracturing

Work-over Rig 5 80,000 n/a 2 Rig Set-up 2.45 4.90

Work-over Rig 5 80,000 n/a 2 Rig Removal 2.45 4.90

Tank Truck 5 80,000 35,000 70 Frac Tanks 2.45 171.50

Water Tanker 5 80,000 35,000 685 Water for Fracing 2.45 1,678.25

Water Tanker 5 80,000 35,000 214 Frac Water Removal (50%) 2.45 524.30

Bob-Tail 5 80,000 35,000 24 Equipment 2.45 58.80 Subtotals 997 2,442.65

Production

Tank Truck 5 80,000 35,000 353 Empty Dehydration Tanks 2.45 864.85 Subtotals 353 864.85

Year - Type of Work 18-k ESAL (per Wellsite)

Number of Trucks (per Wellsite)

Number of Days (per Wellsite)

Year 1 - Drilling Wellsite 388.49 137 25 Year 1 - Fracturing 2,442.65 997 14 Year 1 - Production 864.85 353 365 Year 2 - Production 864.85 353 365 Year 3 - Production 864.85 353 365 Year 4 - Production 864.85 353 365 Year 5 - Production 864.85 353 365 Year 6 - Fracturing 2,442.65 997 14 Year 6 - Production 864.85 353 365 Year 7 - Production 864.85 353 365 Year 8 - Production 864.85 353 365 Year 9 - Production 864.85 353 365 Year 10 - Production 864.85 353 365 Year 11 - Fracturing 2,442.65 997 14 Year 11 - Production 864.85 353 365 Year 12 - Production 864.85 353 365 Year 13 - Production 864.85 353 365 Year 14 - Production 864.85 353 365 Year 15 - Production 864.85 353 365 Year 16 - Fracturing 2,442.65 997 14 Year 16 - Production 864.85 353 365 Year 17 - Production 864.85 353 365 Year 18 - Production 864.85 353 365 Year 19 - Production 864.85 353 365 Year 20 - Production 864.85 353 365 20-Year Total, Per Wellsite 27,456.09 11,185

Significant Oil & gas activities across the state.

Network level FWD is a valuable tool to measure or quantify the damage.

Network level FWD is a valuable tool to help with prioritizing projects.