Bankelman Beam Deflection Test

PROFORMA FOR RECORDING FIELD OBSERVATIONS COLLECTED DURING PAVEMENT CONDITION SURVEY

Name of Road : Date of Survey :Section : Traffic Intensity : CV / Day YearNo. of Traffic Lanes : Annual Rain Fall : mm

Sub grade soil type :

Pavement Details

Remarks

Surfacing Base Sub - base

Type Type Type

GoodFairPoor

S. No.

Sub Section

No.

Height of Embankment / Depth of

cutting

Pavement Condition

(Good/Fair/Poor)

Type of shoulders

Depth of water table

Drainage conditionThick-

ness(mm)Thick-

ness(mm)Thick-

ness(mm)

PROFORMA FOR RECORDING PAVEMENT DEFLECTION DATA

Name of Road :Section :No, of Traffic Lanes :Date & Time of Observation :Climatic Condition (hot/humid/cold) :

:Annual Rainfall (mm) :Whether Temperature Correction is to be applied :Whether Correction to seasonal variation is to be applied :

S. No. PIDial Gauge Reading

Initial Intermediate Final

1 2 3 4 5 6 7 8 9Gravelly 27 0 50 90 90 0.8Sandy 12 5Sandy 12 5Clayey 16 12Clayey 16 12Clayey 16 12Clayey 16 12

Air Temperature oC

Location of test point &

identification of lane

Pavement Temperat

ure oC

Type of soil

Moisture content

(%)

Rebound Deflection (mm)

101.3201.1701.1701.1701.1701.1701.1700.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.000

Moisture Correction

Factor

0.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.000

0.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.000

0.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.000

0.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.000

0.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.000

0.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.000

0.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.000

0.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.000

ANALYSIS OF TEST DATA

Name of Road : Garhi Sawairam Laxmangarh Ramgarh road (SH-35)Section : km 18/0 to 22/0Classification of road : SHWNo, of Traffic Lanes : OneDate & Time of Observation : 1/28/2003 hrsClimatic Condition (hot/humid/cold) : Cold

:

: 24.0

Deviation

1 2 3 4 5 6 7 8 90.8 0.11 1.056 1.966 1.966 0 0 1.966

0.11 00.11 00.11 00.11 0

000000000000000000000000000

Ambiant Temperature oC oC

Pavement Temperature oC oC

Location of Test point

Measured Deflection(from Col 9 of Table-3)

(mm)

Correction for

Temperature(mm)

Correction for

Season(mm)

Corrected Deflection

mm

Mean Deflection

Standard Deviation

Characterstic Deflection as per equation

4 & 5(mm)

Design Traffic in million

Standard axles

ANALYSIS OF TEST DATA

Remarks

10

PAVEMENT OVERLAY DESIGN(AS PER IRC:81:1997)

DESIGN DATA:(i) Name of road :(ii) Classification of road :(iii) Section : km(iv) Year of Last Traffic Count 2002(v) Period of Traffic Survey(vi) Total motorised vehicles ( except 2 wheelers) per day 115(vii) Number of commercial vehicles ( total of both direction) 554(viii) Rainfall 675(ix) Growth rate per annum 7.50%(x) Period of OD Survey & Construction 1(xi) Design Life 10(xii) Charaterstic Deflection = 1.600

DESIGN CALCULATIONS :1 Initial Traffic in the Year of Completion of Construction

Where:

r = Annual growth rate of traffic

Pn =554 x ( 1 + 0.075)^1 596

2 Vehicle Damage Factor ( V.D.F.) 2.00

3 No.s of Traffic Lanes in the roadTraffic Distribution Factor as per para 3.2.3.2. of IRC -37-2001 = 1.00

4 Design Traffic Calculations:Commulative Standard axlesInitial Traffic X distribution Factor as per para 3.2.3.2 of IRC -37 -2001

=596 x 1 596

=365 x[{( 596( 1 +0.075)^10-1}x2]/0.075 6.16Say 10.00

6

5 Characterstic Deflection = 1.600

6 Thickness of Bituminous Macadam Overlay (mm) 99(From Fig. 9 of IRC:81-1997))

7 Structural Section of Pavement Overlay =Base Course 150

WBM / WMM/BUSG 75BM / DBM 75

SurfacingPMC + Seal Coat 40

Pn = Po ( 1 +r) n

Pn = Traffic in the year of completion of construction CV / Day

Po = Traffic at last Count in Nov. 2001

n= Number of years between the last census and the year of completion of construction

Ns =[365 x A x ( 1+r)x - 1} x F] / r

8 Thickness Combination Block

Bituminous Surfacing PMC + Seal Coat40mm

Total Thickness 99mmBase Course 150mm

PAVEMENT OVERLAY DESIGN(AS PER IRC:81:1997)

Nos.CVPDmm per annnum

YearYearsmm

CV / Day

Standard Axle per CV

CV / Day

msamsa

mm

mm

mmmmmm

mm

Total Thickness 99mm