#8 EconoDrain® and EconoDrain PT-3™ Hydraulic Data

We drain your site, not your budget!

MultiDrain Systems, Inc.

Copyright © July 2008 MultiDrain Systems, Inc.

System and Hydraulic Data: # 8 EconoDrain® and #8 EconoDrain PT-3™ EconoDrain® Series EPS Trench Forming System By MultiDrain Systems, Inc. Thank you for using our family of EPS Trench Forming products in your current and future projects. Our trench systems are engineered to conform to material and project specific specifications. MultiDrain Systems is dedicated to continuous product improvement with an eye to fit, form and function and the ever important cost \ benefit analysis. The following system and hydraulic data provides an overview of the following information:

o System Grating Inflow – Table and Graphical Representation Material Specification Grating Load Capability Specification Grating Dimensions Grate Open Area

o Trench Flow Capacity – Table and Graphical Representation

Trench Flow Capacity at 0.5% and 1.0% slope Trench Section Depths at 0.5% and 1.0% slope Trench Section Storage Capacity at 0.5% and 1.0% trench slope Adjustment factors, Fk, used to consider site slope and its effect upon

trench capacity Adjustment factor, Fk, sample calculation

o Outlet Pipe Discharge Flow Graphical Representation

PVC Outlet Pipe Discharge This information generally answers 99% of the project inquiries satisfactorily. If you need more information, we will be happy to address your questions. Please do not hesitate to let us know how we may serve your needs better. Thank you again for using MultiDrain Systems family of products. Our contact information is:

MultiDrain Systems, Inc. P.O. Box 88

Barium Springs, NC 28010

Toll Free: (800) 433-1119 or (704) 508-1010 Fax: (704) 508-1011

e-mail: t.drain@multidrainsystems.com

You may view all of our product information at www.multidrainsystems.com

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15.0

to 1

6.0

44.5

15,9

85Fo

rms

0816

1.57

706

11.0

to 1

1.5

29.6

9,98

408

16A

3.86

1,73

316

.0 to

17.

047

.817

,332

0817

1.68

753

11.5

to 1

2.0

31.2

10,6

4408

17A

4.16

1,86

817

.0 to

18.

051

.218

,682

0818

1.78

799

12.0

to 1

2.5

32.9

11,3

0608

18A

4.46

2,00

318

.0 to

19.

054

.520

,034

0819

1.89

846

12.5

to 1

3.0

34.5

11,9

7008

19A

4.77

2,13

919

.0 to

20.

057

.821

,388

0820

1.99

894

13.0

to 1

3.5

36.2

12,6

3608

20A

5.07

2,27

420

.0 to

21.

061

.122

,744

0821

2.10

941

13.5

to 1

4.0

37.9

13,3

0408

21A

5.37

2,41

021

.0 to

22.

064

.524

,102

0822

2.20

988

14.0

to 1

4.5

39.5

13,9

7208

22A

5.67

2,54

622

.0 to

23.

067

.825

,461

0823

2.31

1,03

514

.5 to

15.

041

.214

,642

0823

A5.

982,

682

23.0

to 2

4.0

71.1

26,8

2108

242.

411,

083

15.0

to 1

5.5

42.9

15,3

1308

24A

6.28

2,81

824

.0 to

25.

074

.428

,183

0825

2.52

1,13

015

.5 to

16.

044

.515

,985

0825

A6.

582,

954

25.0

to 2

6.0

77.8

29,5

4508

262.

621,

178

16.0

to 1

6.5

46.2

16,6

5808

26A

6.89

3,09

126

.0 to

27.

081

.130

,908

0827

2.73

1,22

616

.5 to

17.

047

.817

,332

0827

A7.

193,

227

27.0

to 2

8.0

84.4

32,2

7208

282.

841,

273

17.0

to 1

7.5

49.5

18,0

0608

28A

7.49

3,36

428

.0 to

29.

087

.733

,637

0829

2.94

1,32

117

.5 to

18.

051

.218

,682

0829

A7.

803,

500

29.0

to 3

0.0

91.1

35,0

0208

303.

051,

369

18.0

to 1

8.5

52.8

19,3

5708

30A

8.10

3,63

730

.0 to

31.

094

.436

,367

0831

3.16

1,41

718

.5 to

19.

054

.520

,034

0831

A8.

413,

773

31.0

to 3

2.0

97.7

37,7

34D

eep

0832

3.26

1,46

419

.0 to

19.

556

.120

,711

0832

A8.

713,

910

32.0

to 3

3.0

101

39,1

0008

333.

371,

512

19.5

to 2

0.0

57.8

21,3

8808

33A

9.02

4,04

733

.0 to

34.

010

4.4

40,4

68E

PS08

343.

481,

560

20.0

to 2

0.5

59.5

22,0

6608

34A

9.32

4,18

434

.0 to

35.

010

7.7

41,8

3508

353.

581,

608

20.5

to 2

1.0

61.1

22,7

4408

35A

9.63

4,32

035

.0 to

36.

011

143

,203

Form

s08

363.

691,

656

21.0

to 2

1.5

62.8

23,4

2308

373.

801,

704

21.5

to 2

2.0

64.5

24,1

0208

383.

901,

752

22.0

to 2

2.5

66.1

24,7

8108

394.

011,

800

22.5

to 2

3.0

67.8

25,4

6108

404.

121,

848

23.0

to 2

3.5

69.5

26,1

4108

414.

231,

897

23.5

to 2

4.0

71.1

26,8

2108

424.

331,

945

24.0

to 2

4.5

72.8

27,5

0208

434.

441,

993

24.5

to 2

5.0

74.4

28,1

8308

444.

552,

041

25.0

to 2

5.5

76.1

28,8

6408

454.

652,

089

25.5

to 2

6.0

77.8

29,5

45

Tab

le E

D 8

Hyd

- 01

Tre

nch

Slop

e A

djus

tmen

t Fac

tor,

Fk

Mul

tiDra

in S

yste

ms,

Inc.

Slop

e A

djus

tmen

t Fac

tor,

Fk

Prop

er e

valu

atio

n of

tren

ch fl

ow c

apac

ity m

ust t

ake

finis

hed

grad

e si

te sl

ope

into

con

side

ratio

n. S

ite sl

ope

para

llel t

o tre

nch

slop

e m

ay h

ave

a po

sitiv

e or

neg

ativ

e ef

fect

on

trenc

h flo

w c

apac

ity. R

egar

dles

s, it

is im

porta

nt to

eva

luat

e its

eff

ect t

o as

sure

eith

er a

n ad

equa

te tr

ench

dep

th a

nd sl

ope

is b

eing

inst

alle

d or

just

to m

axim

ize

effic

ienc

y an

d co

st o

f the

inst

alle

d tre

nch

as it

rela

tes t

o th

e de

sire

d de

sign

flow

par

amet

ers.

Tren

ch fl

ow c

apac

ity sh

own

in th

e ac

com

pany

ing

tabl

e an

d gr

aphs

is d

eter

min

ed b

y ap

plyi

ng M

anni

ngs E

quat

ion

for t

he st

anda

rd

Econ

oDra

in® tr

ench

slop

e of

0.5

% a

nd su

rfac

e ro

ughn

ess c

oeff

icie

nt o

f 0.0

13. T

he tr

ench

sect

ion

outle

t end

are

a is

util

ized

in th

e eq

uatio

nan

d th

e ar

ea o

ccup

ied

by th

e gr

atin

g or

cov

er is

exc

lude

d.

App

licat

ion

of th

e Sl

ope

Adj

ustm

ent F

acto

r, F k

is a

pplie

d ac

cord

ing

to E

quat

ion

A:

Q =

(Fk)

x (S

s + S

t)1/2

(equ

atio

n A

)W

here

:Q

eq

uals

tren

ch fl

ow in

gal

lons

per

min

ute

(gpm

)F k

is th

e sl

ope

adju

stm

ent f

acto

r fro

m th

e sy

stem

Tre

nch

Flow

Cap

acity

tabl

eS s

is th

e si

te sl

ope,

feet

per

feet

(dim

ensi

onle

ss)

S tis

the

trenc

h sl

ope,

feet

per

feet

(dim

ensi

onle

ss)

Exam

ple

1

A st

anda

rd E

cono

Dra

in #

8 tr

ench

is to

be

inst

alle

d in

a c

oncr

ete

slab

with

an

addi

tiona

l 0.2

% sl

ope

para

llel a

nd in

the

diec

tion

of tr

ench

flow

. The

tren

ch le

ngth

is 4

0 fe

et a

nd w

ill tr

aver

se th

e fu

ll le

ngth

of t

he c

oncr

ete

slab

. The

des

ired

desi

gn fl

ow c

apac

ity a

t the

en

d of

the

trenc

h is

900

gpm

. Det

erm

ine

the

prop

er tr

ench

size

for t

he g

iven

con

ditio

ns.

Tren

ch se

ctiin

082

0 ha

s a tr

ench

flow

of 8

94 g

pm (1

.99

cfs)

per

Tab

le E

D 8

HY

D-0

1. F

ive

trenc

h se

ctio

ns w

ill b

e re

quire

d to

fulfi

ll th

e 40

' tre

nch

leng

thre

quire

men

t.

Test

the

capa

city

of T

renc

h se

ctio

n 08

20 b

y ap

plyi

ng th

e Sl

ope

Adj

ustm

ent F

acto

r, F k

:

F k fr

om th

e Tr

ench

Flo

w C

apac

ity T

able

ED

8 H

YD

-01

for s

ectio

n 08

20 is

: 12,

636

S t =

0.0

05N

OTE

: gal

lons

per

min

ute

(gpm

) is c

onve

rted

to c

ubic

feet

per

seco

nd (c

fs) b

y di

vidi

ng th

e gp

m re

sult

S s =

0.0

02

b

y 44

8.83

1.

Q =

12,

636

x (0

.005

+ 0

.002

)1/2

Q =

105

7 gp

mTh

e re

sults

yie

ld a

17.

4% fl

ow c

apac

ity in

crea

se d

ue to

add

ition

al si

te sl

op.

Tre

nch

Slop

e A

djus

tmen

t Fac

tor,

Fk

Mul

tiDra

in S

yste

ms,

Inc.

Now

, tes

t a se

ctio

n ha

ving

a fl

ow c

apac

ity o

f app

roxi

mat

ely

747

gpm

or a

bout

83%

of t

he ta

rget

ed fl

ow o

f 900

gpm

.

Sect

ion

0817

tren

ch fl

ow c

apac

ity is

giv

en o

n Ta

ble

ED 8

Hyd

-01

as 7

53 g

pm. D

eter

min

e th

e va

lue

for F

k fro

m th

e sa

me

tabl

e.

Test

Tre

nch

Sect

ion

0817

, hav

ing

a F k

equ

al to

10,

644,

util

izin

g Eq

uatio

n A

.

Q =

10,

644

x (0

.005

+ 0

.002

)1/2

Q =

890

gpm

.

Tren

ch S

ectio

n 08

17 fa

lls sh

ort o

f the

targ

eted

flow

crit

eria

of 9

00 g

pm. T

ry to

get

clo

ser t

o th

e ta

rget

flow

by

test

ing

sect

ion

0818

.

Test

Tre

nch

Sect

ion,

081

8, h

avin

g a

F k e

qual

to 1

1,30

6.

Q =

11,

306

x (0

.005

+ 0

.002

)1/2

Q =

945

gpm

.

This

test

indi

cate

s Tre

nch

Sect

ion

0818

can

be

utili

zed

to a

ttain

a m

inim

um fl

ow c

apac

ity o

f at l

east

900

gpm

.

Ther

efor

e Tr

ench

Sec

tions

081

4 to

081

8 w

ill b

e us

ed to

form

the

40 li

neal

foot

tren

ch d

rain

.Th

e ov

eral

l tre

nch

dept

h w

ill b

e fr

om 1

0 in

. to

12.5

in.

Tren

ch d

isch

arge

flow

will

be

945

gpm

. The

tren

ch fl

ow c

an b

e ex

pres

sed

in c

ubic

feet

per

seco

nd (c

fs) b

y m

ultip

lyin

gth

e flo

w e

xpre

ssed

in g

pm b

y th

e m

ultip

lier 0

.002

228.

The

refo

re 9

45 g

pm is

equ

ival

ent t

o 2.

1 cf

s.

Q.E

.D.

Tre

nch

Flow

Cap

acity

- E

cono

Dra

in #

8 T

renc

h D

rain

Sys

tem

, Slo

pe =

0.5

%

0

500

1,00

0

1,50

0

2,00

0

2,50

0

0806080708080809081008110812081308140815081608170818081908200821082208230824082508260827082808290830083108320833083408350836083708380839084008410842084308440845

Tre

nch

Sect

ion

Part

Num

ber

Trench Flow Capacity (gpm)

0.00

0.50

1.00

1.50

2.00

2.50

3.00

3.50

4.00

4.50

5.00

Trench Flow Capacity (cfs)

(gpm

)(c

fs)

Tre

nch

Flow

Cap

acity

- E

cono

Dra

in #

8 T

renc

h D

rain

Sys

tem

, Slo

pe =

1.0

%

0

500

1,00

0

1,50

0

2,00

0

2,50

0

3,00

0

3,50

0

4,00

0

4,50

0

5,00

0

0806A

0807A

0808A

0809A

0810A

0811A

0812A

0813A

0814A

0815A

0816A

0817A

0818A

0819A

0820A

0821A

0822A

0823A

0824A

0825A

0826A

0827A

0828A

0829A

0830A

0831A

0832A

0833A

0834A

0835A

Tre

nch

Sect

ion

Part

Num

ber

Trench Flow Capacity (gpm)

0.00

2.00

4.00

6.00

8.00

10.0

0

12.0

0

Trench Flow Capacity (cfs)

(gpm

)(c

fs)

Q

, PV

C P

ipe

Flow

Dis

char

ge,

(gpm

)

-

5,00

0

10,0

00

15,0

00

20,0

00

25,0

00

46

810

1214

1618

20

Nom

inal

Pip

e Si

ze, (

in.)

Q, Pipe Discharge, (gpm)

Dis

char

ge (g

pm),

S=0.

5%D

isch

arge

(gpm

), S=

1.0%

Dis

char

ge (g

pm),

S=3.

0%D

isch

arge

(gpm

), S=

4.0%

Dis

char

ge (g

pm),

S=5.

0%

PVC

Pip

e Si

zes S

how

n fo

r C

ompa

rativ

e E

stim

ates

Onl

yN

OT

E: L

ocal

Eng

inee

ring

Eva

luat

ion

shou

ld b

e pe

rfor

med

bas

ed o

n ac

tual

pip

e la

yout

geo

met

ry.

Q, P

ipe

Flow

Dis

char

ge b

ased

on

Man

ning

s Equ

atio

n. A

ssum

es P

ipe

is fl

owin

g fu

ll.

N =

0.0

09, S

= P

ipe

Slop

eH

ead

Los

ses a

re n

ot in

clud

ed in

Dis

char

ge v

alue

.

Project: ____________________________________________________ Date:____________ Contact:_____________________________________________________________________

MultiDrain® Systems, Inc.

We Drain Your Site, Not Your Budget! P.O. Box 88, Barium Springs, NC 28010 drawn by: _____________________________ P: (704) 508-1010 or toll free: (800) 433-1119 F: (704) 508-1011 or e-mail at: www.multidrainsystems.com

MultiDrain Systems, Inc.

P.O. Box 88 Barium Springs, NC 28166

Phone: 704-508-1010 or Toll Free (800) 433-1119 Fax: 704-508-1011 E-mail: t.drain@multidrainsystems.com www.multidrainsystems.com

We drain your site, not your budget!

Makers of:

EconoDrain® EPS Trench Forming System EconoDrain PT-3™ EPS Trench Forming Systems for Airports\Ports\DOT\Intermodal MultiDrain® Steel Trench Drain Systems Alfa Channel® Polymer Concrete Trench Drain

The reported properties and data contained in this publication are based on accepted practices, measurement and evaluation . They are intended as guidelines for the sole use by MultiDrain Systems, Inc. customers and are not meant to circumvent regional or local conditions or engineer’s evaluation. Information and data may be changed or amended at any time and without notice to the user. The information and data made available in this bulletin are provided “as is” without warranties or guarantees of any kind. Furthermore, any person who accesses such information, data, or material disclaims all liability for damages, costs and expenses, and agrees that there are no remedies for negligence, or under strict liability, or for breach of warranty or contract, including, but not limited to, indirect, consequential, punitive or incidental damages, even if notice was given of the possibility of such damages.