• Guarantee of defect free pavement• Throwing away the spec book• A way to get rid of DOT employees
• Guarantee of good performance• Incentive for quality construction• Incentive for innovation
• Current Specificationswritten to push the contractor towards “good performance”
• Warranty Specifications define what good performance is
• “Who has control of an item?”• Contractor?
Then contractor assumes risk of poorperformance.
• Agency?Then agency maintains risk of poor performance.
StructureQuantitiesTime Unit CostCondition Survey
MaterialsMix DesignProcess ControlRemediation Plans
• Liability• “Raises the bar”• Improves competition with pcc• Builder sets own specs• No approvals required
• People loss• Improves probability of good performance• Less confrontation
• Ride
• Rut Depth
• Friction
• Longitudinal Cracks
A - Unit PricesB - Time CostC - 5 Year Warranty
• Ride (IRI) 2.1 m/km
• Rut 9 mm
• Friction 35 / 25
• Longitudinal 0 m Level 2
0
0.5
1
1.5
2
Ave
rage
IRI,
m/k
m
1996 1997 1998 1999 2001
EBWB
05
101520253035404550
Ave
rage
Fri
ctio
nN
umbe
r
1997 1998 1999
NBSB
0
10
20
30
40
50
60
Ave
rage
Fri
ctio
nN
umbe
r
1996 1997 1998 1999 2001
EBWB
010203040506070
0.00 0.20 0.40 0.60Macrotexture Depth, mm
Fric
tion
Num
ber
0123456789
Ave
rage
Rut
Dep
th,m
m
1997 1998 1999
NBSB
0123456789
Ave
rage
Rut
Dep
th,m
m
1996 1997 1998 1999 2001
EBWB
• Success = Performance• Risk Balanced• Innovation Rewarded• Non-Confrontational Construction