concrete paving & storm drainage system326 …

1878

1879

1880

1881

1882

1883

1

8

7

6

1

8

7

5

1

8

7

4

1873

1

8

7

4

1

8

7

5

1

8

7

6

1

8

7

7

1

8

7

8

1

8

7

9

1

8

7

6

1

8

7

7

1

8

7

8

1

8

7

8

1

8

7

7

1

8

7

6

1

8

7

6

1

8

7

5

1

8

7

8

1

8

8

0

1

8

8

2

1883

1

8

8

2

1882

1883

1

8

8

3

1883

1

8

8

2

1

8

8

1

1

8

8

0

18791879

1880

CONCRETE PAVING & STORM DRAINAGE SYSTEMF.F.E. = 1883.75

105,000 SF (300' x 350')

EX-A2

EX-D1AEX-D1

EX-C1

EX-A3

EX-A4

EX-A5

EX-A6

EX-A7

EX-A8EX-A9

EX-A1

CoCoCoCoCoCoCoCoCoCoCoCoDs2Ds3Ds2Ds3

Ds2Ds3Ds2Ds3

Ds2Ds3Ds2Ds3

Ds2Ds3Ds2Ds3

Ds2Ds3Ds2Ds3

Ds2Ds3Ds2Ds3

Ds2Ds3Ds2Ds3

Ds2Ds3Ds2Ds3

Ds2Ds3Ds2Ds3 Ds2

Ds3Ds2Ds3

Ss

Ss

Ss

Ss

Ss

Ss

Ss

Ss

SsSs

SF

SF

SF

SF

SF

SF

SF

SF

SF

SF

SF

SF

Sd-1CSd1-S

Sd-1CSd1-S

Sd-1CSd1-S

Ds2Ds3Ds2Ds3Ss

Ds2Ds3Ds2Ds3Ss

B6Sd2-Ex

B5Sd2-Ex

B3Sd2-Ex

B2Sd2-Ex

B1Sd2-Ex

DATE:

PROJ NO:

DRAWN BY:

RE

VIS

IO

NS

P:\P

ro

je

cts\1

70

8-A

DC

-B

la

irsville

G

a P

ro

je

ct\1

70

8-B

AS

E-3

(S

TA

TE

).d

wg

, C

-4

.2

A, ro

dn

ey, Ju

l 2

6, 2

01

7 - 5

:4

4:0

1p

m

FO

R

THIS SEAL IS VALID ONLY IF SIGNED AND DATED

BY THE LICENSED PROFESSIONAL SHOWN.

435 S

ECON

D ST

REET

, SUI

TE 20

1MA

CON,

GEO

RGIA

3120

1OF

FICE

478.7

42.36

16FA

X 47

8.742

.3569

Cunn

ingham

& Co

. Engi

neers

CIVIL EN

GIN

EERIN

G - CO

NSU

LTIN

G - PRO

JECT M

AN

AG

EM

EN

T

C C

6-14-17

C-4.2A

INTERMEDIATE

ESPCP

1708

RCC

UN

IO

N C

OU

NT

Y D

EV

EL

OP

ME

NT

A

UT

HO

RIT

Y

UN

IO

N C

OU

NT

Y, B

LA

IR

SV

IL

LE

, G

EO

RG

IA

32

6 A

IR

PO

RT

IN

DU

ST

RIA

L D

RIV

E

C

ON

CR

ET

E P

AV

IN

G &

S

TO

RM

D

RA

IN

AG

E S

YS

TE

M

"ALL UTILITIES, WATER, FIRE, SANITARY, GASAND ELECTRICAL LINES, AND LATERALS MUSTBE MARKED WITH LOCATOR WIRE ANDDETECTOR TAPE".

Over Excavated Sediment Trap (Sediment Storage Calcs.) - Structure B6

1. Drainage Area = 1.72 ac.2. Required sediment storage = 67 cy/ac * drainage area Required sediment storage = 67 cy/ac * 1.72 ac. = 115.2 cy = 3111.4 cf3. Assume excavation (minimum of 1.5 ft.) = 1.5 ft.4. Assume (shall not be steeper than 2:1) = 2:15. Determine required surface area SA min = Required sediment storage / excavation depth SA min = 3111.4 cf / 1.5 ft. min = 2074 sf6. Assume shape of excavation and determine dimensions. (A rectangular shape with 2:1 length to width ration is recommended.) Circular Dia 51.4 ft Provided: Dia 55 ft = 2374 SF SA >2074 SF SA

STRUCTURE B6 - DRAINAGE AREADRAINED AREA = 1.72

B6 - OVER EXCAVATEDSEDIMENT TRAP

1 inch = ft.

( IN FEET )

GRAPHIC SCALE

0

40 40 80

40

16020

N

O

R

T

H

Over Excavated Sediment Trap (Sediment Storage Calcs.) - Structure B5

1. Drainage Area = 1.42 ac.2. Required sediment storage = 67 cy/ac * drainage area Required sediment storage = 67 cy/ac * 1.42 ac. = 98.5 cy = 2659.2 cf3. Assume excavation (minimum of 1.5 ft.) = 1.5 ft.4. Assume (shall not be steeper than 2:1) = 2:15. Determine required surface area SA min = Required sediment storage / excavation depth SA min = 2659.2 cf / 1.5 ft. min = 1772 sf6. Assume shape of excavation and determine dimensions. (A rectangular shape with 2:1 length to width ration is recommended.) Circular Dia 47.5 ft Provided: Dia 50 ft = 1962 SF SA >1772 SF SA

STRUCTURE B5 - DRAINAGE AREADRAINED AREA = 1.42

B5 - OVER EXCAVATEDSEDIMENT TRAP

Over Excavated Sediment Trap (Sediment Storage Calcs.) - Structure B3

1. Drainage Area = 0.45 ac.2. Required sediment storage = 67 cy/ac * drainage area Required sediment storage = 67 cy/ac * 0.45 ac. = 30.1 cy = 814 cf3. Assume excavation (minimum of 1.5 ft.) = 1.5 ft.4. Assume (shall not be steeper than 2:1) = 2:15. Determine required surface area SA min = Required sediment storage / excavation depth SA min = 814 cf / 1.5 ft. min = 542 sf6. Assume shape of excavation and determine dimensions. (A rectangular shape with 2:1 length to width ration is recommended.) Rectangular L = 30 ft W = 18 ft Provided: L = 30 ft W = 20 ft = 600 SF SA >542 SF SA

STRUCTURE B3 - DRAINAGE AREADRAINED AREA = 0.45

B3 - OVER EXCAVATEDSEDIMENT TRAP

Over Excavated Sediment Trap (Sediment Storage Calcs.) - Structure B2

1. Drainage Area = 0.20 ac.2. Required sediment storage = 67 cy/ac * drainage area Required sediment storage = 67 cy/ac * 0.20 ac. = 13.4 cy = 361 cf3. Assume excavation (minimum of 1.5 ft.) = 1.5 ft.4. Assume (shall not be steeper than 2:1) = 2:15. Determine required surface area SA min = Required sediment storage / excavation depth SA min = 361 cf / 1.5 ft. min = 241 sf6. Assume shape of excavation and determine dimensions. (A rectangular shape with 2:1 length to width ration is recommended.) Circular Dia 17.5 ft Provided: Dia 20 ft = 314 SF SA >241 SF SA

STRUCTURE B2 - DRAINAGE AREADRAINED AREA = 0.20

B2 - OVER EXCAVATEDSEDIMENT TRAP

Over Excavated Sediment Trap (Sediment Storage Calcs.) - Structure B1

1. Drainage Area = 0.20 ac.2. Required sediment storage = 67 cy/ac * drainage area Required sediment storage = 67 cy/ac * 0.20 ac. = 13.4 cy = 361 cf3. Assume excavation (minimum of 1.5 ft.) = 1.5 ft.4. Assume (shall not be steeper than 2:1) = 2:15. Determine required surface area SA min = Required sediment storage / excavation depth SA min = 361 cf / 1.5 ft. min = 241 sf6. Assume shape of excavation and determine dimensions. (A rectangular shape with 2:1 length to width ration is recommended.) Circular Dia 17.5 ft Provided: Dia 20 ft = 314 SF SA >241 SF SA

STRUCTURE B1 - DRAINAGE AREADRAINED AREA = 0.20

B1 - OVER EXCAVATEDSEDIMENT TRAP

AREA A6AREA A5

AREA A3

AREA A2

AREA A1