pci method uthm

7/24/2019 PCI Method uthm

1/15

PAVEMENT MAINTENANCE

(PAVEMENT CONDITION INDEX)

Repeatable rating system identifying the

pavement condition

Numerical Index Ranging from 0 to 100

0 failed pavement

100 perfect condition


2/15



Calculated based on the results of a visual

condition survey

What is the matter that being surveyed

!avement distress

"#ype

"$everity

"%uantity


3/15

&'W #' ()#)R*IN) !CI

Road+!avement $ection

(ividing section into inspection units ,sample units-

Number of sample unit to be inspected

$urvey procedure

Calculating of !CI


4/15

(ividing sample units

.nsurfaced and asphalt surface roads

,including asphalt over concrete-

/00 1000 ft/

2sphalt surface airfield 000 /000 ft Concrete and airfields 3ith 4oint spaced

5 / ft " /0 6 slabs

Note7 Not all samples units are re8uired to be the same

si9e but must fit 3ithin guidelines

1 ft : 0;0< m/


5/15

(etermining $ample .nit to be $urveyed

(epend on the use of the pavement and

pro4ect or net3or= level

!ro4ect level &igh degree of sampling

N

n

n : number of sample that

must be surveyedN : total number of sample

units


6/15

$ystematic Random

/ /> /? /6 /< @0 @1 @/ @@ @A @ @> @? @6 @< A0 A1 A/ A@ AA A A> A?

1 / @ A > ? 6 < 10 11 1/ 1@ 1A 1 1> 1? 16 1< /0 /1 // /@ /A

#otal number of sample units in section ,N- : A?

*inimum number of units to be surveyed : 1@ ,'btain from the curve-

Interval ,i- : N+n : A?+1@ : @;> : @Random start ,$- : @


7/15

Net3or= level lo3 degree of sampling

#o obtain meaningful rating 3ith the least

cost

Bor maintenance 3or= plans

2ssessing the condition of pavement

Identifying candidate section that may

3arrant detailed pro4ect"level inspection

ased on / tables


8/15

Table 1: Example of Network Level Sampling Criteria

No of sample Unitsin Section (N)

No of nits to beinspecte! (n)

1 1

> 10 /

11 1 @

1> 0 A

'ver A0 10 D ,round up to next3hole sample unit-


9/15

Table ": Network level sampling

No of sample

Units in Section(N)

No of nits to be

inspecte! (n)

1 1

/ " A /

"/0 @

'ver /0 A


10/15



#verall step $n Calclating %C$


11/15




12/15

!CI : 100 " ? :A@




13/15

Table 5.1 Standard Pavement Ratin !a"ed #n PCI

Pavement Condition Index Rating

100 to 85 Excellent

85 to 70 Very good

70 to 55 Good

55 to 40 Fair

40 to 25 Poor

25 to 10 Very poor

10 to 0 Failed




14/15




15/15



pci method uthm

Documents