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VDOT-Pavement Design Guide for Subdivision and Secondary Roads in Virginia(revised 2014)
Appendix IV
Flexible Pavement Design Worksheet for New Subdivision Streets
This sheet is intended for use and submission in conjunction with VDOT's Secondary Street Acceptance Requirements
County A I ij t M of r It Date: ai (t1 I ty
Subdivision W }. Nast a
Street Name Kt'dra Stet t4
Design Engineer r Gr til‘t Phone: 111-q 12t LA- I l o
AADT Projected traffic for the street segment considered,as defined in the Subdivision Street Requirements.
CBRD Design CBR=Average of CBRT x 2/3 and modified only as discussed in the Pavement Design Guide.
CBRT CBR value of the subgrade sample,taken and tested as specified in the Pavement Design Guide
DME VDOT District Materials Engineer
EPT Equivalent projected traffic
HCV Number of Heavy Commercial Vehicles(e.g.trucks,buses,etc.,with 2 or more axles and 6 or more tires).
%HCV Percentage of the total traffic volume composed of Heavy Commercial Vehicles.
RF Resiliency Factor=Relative value of the subgrade soil's ability to withstand repeated loading.
SSV Soil support value of subgrade(SSV=CBRD x RF)
Dp Thickness index of proposed pavement design computed by the Conventional Pavement Design Method
DR Thickness index required,based on Design AADT and SSV,determined by Appendix II.
Step 1: Determine Design AADT Step 2: Determine Design Values
CBR, RF,and SSV
AADT 460 Sample No. CBRT Resiliency Factor (RF)
1 A`? 1 S Source Value
%HCV= 100(HCV/AADT) I A 2 Table 1
or
EPT=20 x HCV Note:For 3 Appendix I i •0
%HCV>5%, CINL -z(3 0611-r DME approved RF
Note:For%HCV<5%,use AADT EPT>AADT Q e(tS
C8 F1 i0 3.3 For preliminary designs,use the lowest
RF value in the equation
Design AADT 4(p O CBRD x RF = SSV
Use greater of AADT or EPT
( 3.3 ) x (-) = 3 .3
Step 3: Pavement Design (Check appropriate box and show proposed pavement design below.)
SA
❑ (A) Limited to Design AADT<400-Show pavement material notations and thickness from Appendix IV Tables A and B.
❑ (B) Show pavement section as developed in the Pavement Design Guide. DR=
(See Appendix III for material notations and thickness equivalency values(a)). from Appendix II
Description of Proposed Pavement Section
Material Notation Thickness,h a (a x h)
Surface 2" SM q•S tk Z•ZS 4 .
Base 3" OM Z6.O A 3 Z•25 4.?S
Subbase / �t (A n �' rtwt LA 04,5y t. '4 Q �i O.t. 3.L
10 Dr, must equal or exceed the value of DR. D = E(a x h)= (1.( , $S
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VDOT-Pavement Design Guide for Subdivision and Secondary Roads in Virginia(revised 2014)
Appendix IV
Flexible Pavement Design Worksheet for New Subdivision Streets
This sheet is intended for use and submission in conjunction with VDOT's Secondary Street Acceptance Requirements
County A l bot ton r(g Date: "1114
Subdivision VVhTt( iitpn p►tgtt (;
Street Name P; n t. V .-- RA
Design Engineer QKf} G r nt Phone: 1'M-8124 cvf.. I o
AADT Projected traffic for the street segment considered,as defined in the Subdivision Street Requirements.
CBRD Design CBR=Average of CBRT x 2/3 and modified only as discussed in the Pavement Design Guide.
CBRT CBR value of the subgrade sample,taken and tested as specified in the Pavement Design Guide
DME VDOT District Materials Engineer
EPT Equivalent projected traffic
HCV Number of Heavy Commercial Vehicles(e.g.trucks,buses,etc.,with 2 or more axles and 6 or more tires).
%HCV Percentage of the total traffic volume composed of Heavy Commercial Vehicles.
RF Resiliency Factor=Relative value of the subgrade soil's ability to withstand repeated loading.
SSV Soil support value of subgrade(SSV=CBRD x RF)
Dp Thickness index of proposed pavement design computed by the Conventional Pavement Design Method
DR Thickness index required,based on Design AADT and SSV,determined by Appendix II.
Step 1: Determine Design AADT Step 2: Determine Design Values
CBR,RF,and SSV
AADT o o Sample No. CBRT Resiliency Factor (RF)
1 A QQ t S Source Value
%HCV= 100(HCV/AADT) N (A 2 Table I
or
EPT=20 x HCV Note:For 3 Appendix I l. O
Note:For%HCV<5%,use AADT %HCV>5%, (,h(t1� 7
:?i 3 e,61.1* DME approved RF
EPT>AADT Q �f
Cg*Its = 3. 3 For preliminary designs,use the lowest
RF value in the equation
Design AADT ( O O CBRD x RF = SSV
Use greater of AADT or EPT
( 3.3 ) x (1"; ) = 3.3
Step 3: Pavement Design (Check appropriate box and show proposed pavement design below.)
❑/ (A) Limited to Design AADT<400-Show pavement material notations and thickness from Appendix IV Tables A and B.
Uel (B) Show pavement section as developed in the Pavement Design Guide. DR= 1.3
(See Appendix III for material notations and thickness equivalency values(a)). from Appendix II
Description of Proposed Pavement Section
Material Notation Thickness,h a (a x h)
Surface 2" 5 M 1-SA Z 2.25' 4.S
Base '3" eM 25:0 A1.2.5 (o.1S
Subbase (01'
Ui„4 (l%f f A 1-n I,,cq re hh�t (O �'� 3
DP must equaloror exceed the value of DR. Dp= E(a x h)= 14. 35
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VDOT-Pavement Design Guide for Subdivision and Secondary Roads in Virginia(revised 2014)
Appendix IV
Flexible Pavement Design Worksheet for New Subdivision Streets
This sheet is intended for use and submission in conjunction with VDOT's Secondary Street Acceptance Requirements
County /Q l bQ A ar t Date: 11'17 I ty
Subdivision 034—^ Q kAs C g
Street Name Wqr b
Design Engineer 4NS.f;A At Phone: %1 - 1121 evi 1 (0
AADT Projected traffic for the street segment considered,as defined in the Subdivision Street Requirements.
CBRD Design CBR=Average of CBRT x 2/3 and modified only as discussed in the Pavement Design Guide.
CBRT CBR value of the subgrade sample,taken and tested as specified in the Pavement Design Guide
DME VDOT District Materials Engineer
EPT Equivalent projected traffic
HCV Number of Heavy Commercial Vehicles(e.g.trucks,buses,etc.,with 2 or more axles and 6 or more tires).
%HCV Percentage of the total traffic volume composed of Heavy Commercial Vehicles.
RF Resiliency Factor=Relative value of the subgrade soil's ability to withstand repeated loading.
SSV Soil support value of subgrade(SSV=CBRD x RF)
Dp Thickness index of proposed pavement design computed by the Conventional Pavement Design Method
DR Thickness index required,based on Design AADT and SSV,determined by Appendix II.
Step 1: Determine Design AADT Step 2: Determine Design Values
CBR,RF,and SSV
AADT 2 3 O Sample No. CBRT Resiliency Factor (RF)
I AQ e I S Source Value
%HCV= 100(HCV/AADT) A 2 Table 1
or 3 Appendix I 1.0
EPT=20 x HCV Note:For pp
Note:For%HCV<5%,use AADT %HCV>5%, Gb,iet:2-/3 COL DME approved RF
EPT>AADT
CAS14 c 3• 3 For preliminary designs,use the lowest
RF value in the equation
Design AADT .50 CB RD x RF = SSV
Use greater of AADT or EPT
( 3.3 ) x ( (• O ) = 3.3
Step 3: Pavement Design (Check appropriate box and show proposed pavement design below.)
❑ (A) Limited to Design AADT<400-Show pavement material notations and thickness from Appendix IV Tables A and B.
(B) Show pavement section as developed in the Pavement Design Guide. DR= 1.3
(See Appendix III for material notations and thickness equivalency values(a)). from Appendix II
Description of Proposed Pavement Section
Material Notation Thickness,h a (a x h)
Surface 2" S'I °l.SA Z L,tS 4.S
Base ZS.° A /i 3 Z•tS ..75
Subbase ( cs f t�r t„( rl'{h f l'1 A t Cy O.1, 3,
V Dp must equal or exceed the value of DR. Dp= E(a x h)= 14.415
N_Ss > P1.3 ok
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VDOT—Pavement Design Guide for Subdivision and Secondary Roads in Virginia(revised 2014)
Appendix IV
Flexible Pavement Design Worksheet for New Subdivision Streets
This sheet is intended for use and submission in conjunction with VDOT's Secondary Street Acceptance Requirements
County Atoty *r%e Date: 1(11'1 IN
Subdivision VItt1 APvto Plum b
Street Name Co 4 o,n 4 LA"C
Design Engineer D KS 4":A G t t At Phone:915 .8 121 aA l to
AADT Projected traffic for the street segment considered,as defined in the Subdivision Street Requirements.
CBRD Design CBR=Average of CBRT x 2/3 and modified only as discussed in the Pavement Design Guide.
CBRT CBR value of the subgrade sample,taken and tested as specified in the Pavement Design Guide
DME VDOT District Materials Engineer
EPT Equivalent projected traffic
HCV Number of Heavy Commercial Vehicles(e.g.trucks,buses,etc.,with 2 or more axles and 6 or more tires).
%HCV Percentage of the total traffic volume composed of Heavy Commercial Vehicles.
RF Resiliency Factor=Relative value of the subgrade soil's ability to withstand repeated loading.
SSV Soil support value of subgrade(SSV=CBRD x RF)
Dp Thickness index of proposed pavement design computed by the Conventional Pavement Design Method
DR Thickness index required,based on Design AADT and SSV,determined by Appendix II.
Step 1: Determine Design AADT Step 2: Determine Design Values
CBR,RF,and SSV
AADT �40 Sample No. CBRT _ Resiliency Factor (RF)
1 ref i S Source Value
%HCV= 100(HCV/AADT) N 'a 2 Table 1
or
EPT=20 x HCV Note:For 3 Appendix I I.a
%HCV>5%, C4R 1 26 C8RT DME approved RF
Note:For%HCV<5%,use AADT EPT>AADT a f
(.6 Kai t r= 3.3 For preliminary designs,use the lowest
RF value in the equation
Design AADT 4p CBRD x RF =
Use greater of AADT or EPT 2SSV
( 3.3 ) x ( 1.O ) = 3.3
Step 3: Pavement Design (Check appropriate box and show proposed pavement design below.)
D (A) Limited to Design AADT<400-Show pavement material notations and thickness from Appendix IV Tables A and B.
g (B) Show pavement section as developed in the Pavement Design Guide. DR= Q•11
(See Appendix III for material notations and thickness equivalency values(a)). from Appendix II
Description of Proposed Pavement Section
Material Notation Thickness,h a (a x h)
Surface Z" S M 1.5"A 2 2.25 4 .S
Base 3 't gM 25.0A 3 2.13 (01S
Subbase a U'Aire.. to (-cyst t CD cm, 3.to
Dp must equal or exceed the value of DR. Dp= E(a x h)= ly•3 S
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