chapter 02 - substructure section 01 drainage (sub-dr) · 2007-01-30 · chapter 02 - substructure....

OFFICE OF STRUCTURES STRUCTURAL DETAIL MANUAL

Chapter 02 - Substructure

SECTION 01

DRAINAGE (SUB-DR)

1

If inlets are required at each side of bridge, and

distance between inlets is less than 60’, then cross

pipe shall be considered with outlet used on

lower inlet. If length is greater than 60’ or it would

be more ecomonical to provide a separate outlet

its own outlet pipe, etc. For details see sht. 2 of 2.

Secure traffic barrier thrie beam

to end posts as per SHA Standard

for pipes less than 60’, then each inlet shall have

Runoff Flow

Runoff Flow

L of

Roadway

c

Roadway

Pavement

End of End Post

Portion of shoulder to

remain as called for on

typical highway section.

PLAN

Scale: 1’’ = 20’-0’’

DRAINAGE INLETAT END OF BRIDGE STRUCTURE

(OPEN APPROACH ROADWAY)

Payment for Drainage Inlet at End of Bridge

Open Approach Roadway is defined as a highway

with full shoulders, no curbed sections, sidewalks

and/or raised medians.

Traffic barrier posts shall be driven

prior to placing concrete gutter pan

except if option above is utilized.

See sheet 2 of 2 for additional

details.

Notes:

1.

2.

3.

4.

5.

Structure shall be on an each basis. Cost for entire

2

DATE:

STATE HIGHWAY ADMINISTRATION

DEPARTMENT OF TRANSPORTATION

STATE OF MARYLAND

SHEET OF

APPROVAL

Precast Standard

Type E Combination

Inlet, Elevation to be

established in the

field. See SHA Std.

MD-374.74.

(Curb, shown shaded, shall be

poured monolithically with end

post. No joint allowed.)

District Engineer shall have option of requiring

sockets, placing posts, and filling with 9’’+ of grout,

(grout in accordance with Standard Specification

Section 902.11) sloped to drain, as second stage

construction.

MD-605.41, 605.41-01, 605.41-02, 605.51

and 605.51-01.

See note on General Plan and

Elevation as to which ends of

structure will require inlets.

Offset Bracket

Cross Pipe 18’’

Reinforced Concrete

Pipe, Class IV. For

bedding requirements

see Section 303.03.02.

installation of hatched area, curb and gutter, inlet,

Outlet pad will be paid for separately.

section shall be incidental to the unit cost of inlet.

etc. Cross pipe, outlet pipe, elbows and concrete end

OFFICE OF STRUCTURES

DIRECTOR


SUB-DR-101

SU

BS

TR

UC

TU

RE

- DR

AIN

AG

E

VERSION

DETAIL NO.

1.0

01-30-2007

DRAINAGE INLETAT END OF BRIDGE STRUCTURE

(OPEN APPROACH ROADWAY)

Pipe should empty onto

new or existing slope

protection. If not feasible,

provide a 4’x 4’x 4’’

outlet block of Mix. No.1

Concrete or Class I Riprap.

This side of pad to be

built up to dissipate flow.

This angle shall

be determined

in the field.

A

AControl

Joint

2’-

0’’

3’-

0’’

8’-0’’

L of c

Inlet

Modified Type A Combination Curb

and Gutter; Gutter Pan shall be

as shown hatched, 9’’ in depth.

Single hatched area shall be sloped

Double hatched area to be sloped

to follow shoulder configuration.

at 10%, see Section A-A.

2 2

Scale: 1/8 ’’ = 1’-0’’

PLAN OF INLET AREA

Shoulder

Shoulder Cross Slope10%

3’-0’’ Varies

9’’ Gutter Pan

SECTION A-A

Scale: 1/4 ’’ = 1’-0’’

38’-6’’

DATE:



STATE OF MARYLAND

SHEET OF

APPROVAL

5’-

6’’

End of End Post

Rear face

of backwall.

2’-0’’

2 - #5 bars epoxy

coated, 5’-6’’ long

bent as shown placed

in end post and curb.

(Curb, shown shaded, shall be poured

monolithically with end post see

reinforcing detail below. No joint allowed.)

Outlet pipe - 18’’

Reinforced Concrete

Pipe, Class IV, with

Std. Concrete End

Section (MD 368.01).


DIRECTOR


SUB-DR-101

SU

BS

TR

UC

TU

RE

- DR

AIN

AG

E

1.0

VERSION

DETAIL NO.

01-30-2007

APPROVAL

DIRECTOR


DATE:

VERSION



STATE OF MARYLAND


DETAIL NO. SHEET OF1 4

Notes:

Minimum slope of Pipe Underdrain Outlets is ‚''/ft.

ELEVATION VIEW

PLAN

AA

15' (Typical)+-

Drain in each

direction from

midpoint @ ‚''/ft.

slope (Typ.)

Scale: ‘'' = 1'-0''

Drain ‚'' /ft. slo

pe

Drain ‚'' /ft. slo

pe

PLAN VIEW

To be used for all fixed abutments or expansion abutments

with lengths contributing to expansion less than or equal to

70 feet.

wing wall

underdrain behind

6'' perforated PVC

abutment

underdrain behind

6'' perforated PVC

wing wall

behind

underdrain

90° bend from

6'' PVC pipe

6'' + length

wall.

outletted directly through the wing

behind the abutment. They can be

independent of the drainage system

drainage system behind them may be

For wing walls over 15 ft. long, the

be slightly higher.

drainage system behind the wing wall

of pipe. This will necessitate the

abutment using 2 - 90° bends and a short length

connected to the drainage system behind the

The drainage system behind each wing wall can be

For Section A-A see Sheet No. 2, 3 or 4

All joints glued.

Note:

that underdrain is composed of.

Plug ends of pipes with same material

pipe underdrain (typ.)

6'' Perforated PVC circular

protection or finished ground

abutment onto the slope

Outlet as shown through the

7.

6.

5.

4.

3.

2.

1.

SU

BS

TR

UC

TU

RE -

DR

AIN

AG

ESUB-DR-201

EQUAL TO 70 FEETCONTRIBUTING TO EXPANSION LESS THAN OR

FIXED BEARINGS OR EXPANSION BEARINGS WITH LENGTHSDRAINAGE SYSTEM AND BACKFILL FOR ABUTMENTS WITH

90° bend

-

SUB-DR-203.

For section through wing wall, see Detail No.

will be incidental to the Substructure Concrete item.

The cost of the PVC underdrains complete in place

1.0

10/02/2014

APPROVAL

DIRECTOR


DATE:

VERSION



STATE OF MARYLAND



SE

CTIO

N

A-

A

6'' N

on-Perf

orate

d

PV

C

Cir

cular

Pip

e

Underdrain

Outlet,

#5

@ 1'-6'' c/c

Scale: ‚'' = 1'-0''

Protectio

n

Slo

pe

1'-6'' c/c

co

uple

r at

re

bar do

wel

#5

Threade

d

Pip

e

Underdrain

6'' P

erf

orate

d

PV

C

Cir

cular

No. 1

or better)

Co

ncrete

Base (Mix

base

aggregate

Graded

Pave

me

nt

Approach

Road

way

‚'' / ft.

and

win

g

walls at

to

ward abut

me

nt

Slo

pe to

drain

ta

mpe

d in co

nf

or

mance

wit

h

Sectio

n 210

Poro

us backfill pla

ce

d and

in 6'' lifts in co

nf

or

mance

wit

h

Sectio

n 501.

Grade

d aggre

gate

base to

be

pla

ce

d and co

mpacte

d

as sho

wn

#5's space

d

will b

e all

owe

d f

or this o

ptio

n.

be eli

min

ate

d.

No additio

nal c

om

pe

nsatio

n

to rest o

n to

p of f

ootin

g, the reinf

orcin

g can

If

1'-6'' width of the co

ncrete

base is po

ure

d

poro

us backfill a

nd approach e

mbank

me

nt

Pla

ce

Cla

ss

SD

Ty

pe I I n

on

wo

ve

n ge

ote

xtile

bet

wee

n

Cost to

be in

cid

ental t

o the

pavin

g it

ems.

Cla

ss

SD

Ty

pe I no

nw

ove

n ge

ote

xtile.

the

pertin

ent

Structure

Co

ncrete it

ems.

re

mo

ve

d.

The re

mo

ve

d

material will b

e in

cid

ental to

pave

me

nt

Botto

m

of

Co

ncrete It

ems.

will

be in

cid

ental to the

pertin

ent

Structure

The cost of the

ge

ote

xtile

wit

hin the li

mit

s sho

wn

Slo

pe ‚'' / ft.

SUB-DR-201

LESS THAN OR EQUAL TO 70 FEETBEARINGS WITH LENGTHS CONTRIBUTING TO EXPANSION

(PEDESTAL) WITH FIXED BEARINGS OR EXPANSIONDRAINAGE SYSTEM AND BACKFILL FOR ABUTMENTS

SU

BS

TR

UC

TU

RE -

DR

AIN

AG

E

Varie

s - 1'-4'' Min.

30'-

0'' M

ax. (m

easure

d alo

ng

L approach road

way)

c

2'-

0''

1

2

1.

2.

Notes:

as sho

wn be

hin

d the abut

me

nt and to the sa

me

ge

om

etric

s be

hin

d the abut

me

nt

win

g

walls

whe

n

The

Co

ntractor

must pro

vid

e a

well co

mpacte

d

surface to

pla

ce the

ge

ote

xtile and sto

ne fill

again

st. In fill areas it

will b

e

necessary to

overfill

a sufficie

nt distance so that a

well co

mpacte

d

surface

will b

e

pro

duce

d

whe

n the

overfill is

3.

4.

2'-0'' min.

3''

Slo

pe as stee

p as gro

und

will all

ow (T

yp.) 1 : 2

maxim

um

Slo

pe

2'' / ft.

Da

mppro

of

*

*

the

y

parallel t

he

hig

hway. (S

ee sheet 5 of

5)

Poro

us backfill (refer to

Sectio

n 469) shall

be

pla

ce

d

6''

*

1.0

10/02/2014

3

DATE:



STATE OF MARYLAND

SHEET OF

APPROVAL

SE

CT

ION

A-A

#5 T

hre

aded

rebar

dow

el

co

up

ler a

t

1’-

6’’

c/c

6’’

P

erf

ora

ted P

VC

Cir

cula

r

Pip

e U

nd

erd

rain

Vari

es -

1’-

4’’

Min

.

30

’-0

’’ M

ax

. (m

easu

red

alo

ng

L a

pp

roach

ro

ad

way

)c

2’-

0’’

Slo

pe a

s s

teep a

s g

round

wil

l all

ow

(T

yp

.) 1

: 2

max

imu

m1

2

1.

2.

No

tes:

as s

how

n b

ehin

d t

he a

butm

ent

and t

o t

he s

am

e

geo

metr

ics b

eh

ind

th

e a

bu

tmen

t w

ing

wall

s w

hen

Th

e C

on

tracto

r m

ust

pro

vid

e a

well

co

mp

acte

d

su

rface t

o p

lace t

he g

eo

tex

tile

an

d s

ton

e f

ill

again

st.

In f

ill

areas i

t w

ill

be n

ecessary t

o o

verfil

l

a s

uffic

ient

dis

tance s

o t

hat

a w

ell

com

pacte

d

su

rface w

ill

be p

ro

du

ced

wh

en

th

e o

verfil

l is

3.

4.

2’-0’’ min.

Graded

aggregate

base

3’’

6’’

N

on-P

erf

ora

ted P

VC

Cir

cula

r P

ipe U

nderd

rain

Ou

tlet,

Slo

pe

1/4

’’

/ ft

.

Slo

pe 2

’’ /

ft.

Appro

ach R

oadw

ay

Pav

em

en

t

Dam

ppro

of

Slo

pe t

o d

rain

to

ward

ab

utm

en

t

an

d w

ing

wall

s a

t 1

/4 ’

’ /

ft.

4.

*

**th

ey p

arall

el

the h

ighw

ay. (S

ee s

heet

5 o

f 5

)

#5

@ 1

’-6

’’ c

/c

Poro

us b

ackfi

ll pla

ced a

nd

tam

ped

in

co

nfo

rm

an

ce w

ith

Secti

on

21

0

Porous b

ackfil

l (

refer t

o S

ecti

on 4

69) s

hall

be p

laced

Grad

ed

ag

greg

ate

base t

o b

e p

laced

an

d c

om

pacte

d

in 6

’’ l

ifts

in c

onform

ance w

ith S

ecti

on 5

01.

#5’s

spaced

as s

how

n

*If 1

’-6

’’ w

idth

of t

he c

on

crete

base i

s p

ou

red

to r

est

on

to

p o

f f

oo

tin

g,

the r

ein

fo

rcin

g c

an

be e

lim

inate

d. N

o a

ddit

ional

com

pensati

on

wil

l b

e a

llo

wed

fo

r t

his

op

tio

n.

Cla

ss S

D T

yp

e I

n

on

wo

ven

geo

tex

tile

.

Cost

to b

e i

ncid

enta

l t

o t

he p

avin

g i

tem

s.

Pla

ce C

lass S

D T

ype I

I nonw

oven g

eote

xti

le b

etw

een

poro

us b

ackfi

ll and a

ppro

ach e

mbankm

ent


DIRECTOR

OFFICE OF STRUCUTRES

Slo

pe p

rote

cti

on

Co

ncrete

base

(Mix

No

. 1

or

bett

er)

DRAINAGE SYSTEM AND BACKFILL FOR ABUTMENTS(SEMI-CANTILEVER) WITH FIXED BEARINGS OR EXPANSIONBEARINGS WITH LENGTHS CONTRIBUTING TO EXPANSION

LESS THEN OR EQUAL TO 70 FEET

4

Sca

le:

1/4

’’

= 1

’-0

’’re

mo

ved

. T

he r

em

ov

ed

mate

rial

wil

l b

e i

ncid

en

tal

to

the p

erti

nent

Str

uctu

re C

oncrete

ite

ms.

6’’

Bott

om

of

pavem

ent

SUB-DR-201

SU

BS

TR

UC

TU

RE

- DR

AIN

AG

E

Th

e c

ost

of t

he g

eo

tex

tile

wit

hin

th

e l

imit

s s

ho

wn

wil

l be i

ncid

enta

l to

the p

erti

nent

Str

ucutr

e

Co

ncre

te I

tem

s.

1.0

VERSION

DETAIL NO.

10-02-2014

4

DATE:



STATE OF MARYLAND

SHEET OF

APPROVAL

SE

CT

ION

A-A

Vari

es -

1’-

4’’

Min

.

6’’

P

erf

ora

ted P

VC

Cir

cula

r

Pip

e U

nd

erd

rain

30

’-0

’’ M

ax

. (m

easu

red

alo

ng

L a

pp

roach

ro

ad

way

)c

2’-

0’’

Slo

pe a

s s

teep a

s g

round

wil

l all

ow

(T

yp

.) 1

: 2

max

imu

m1

2

1.

2.

No

tes:

as s

how

n b

ehin

d t

he a

butm

ent

and t

o t

he s

am

e

geo

metr

ics b

eh

ind

th

e a

bu

tmen

t w

ing

wall

s w

hen

Th

e C

on

tracto

r m

ust

pro

vid

e a

well

co

mp

acte

d

su

rface t

o p

lace t

he g

eo

tex

tile

an

d s

ton

e f

ill

again

st.

In f

ill

areas i

t w

ill

be n

ecessary t

o o

verfil

l

a s

uffic

ient

dis

tance s

o t

hat

a w

ell

com

pacte

d

su

rface w

ill

be p

ro

du

ced

wh

en

th

e o

verfil

l is

3.

4.

2’-0’’ min.

Graded

aggregate

base

3’’

Slo

pe 2

’’ /

ft.

6’’

N

on-P

erf

ora

ted P

VC

Cir

cula

r P

ipe U

nderd

rain

Ou

tlet,

Slo

pe

1/4

’’

/ ft

.

Appro

ach R

oadw

ay

Pav

em

en

t

Dam

ppro

of

Slo

pe t

o d

rain

tow

ard

ab

utm

en

t an

d w

ing

wall

s

at

1/4

’’

/ ft

.

4.

* **

they p

arall

el

the h

ighw

ay. (S

ee s

heet

5 o

f 5

)

#5

@ 1

’-6

’’ c

/c

Poro

us b

ackfi

ll pla

ced a

nd

tam

ped

in

co

nfo

rm

an

ce w

ith

Secti

on

21

0

Porous b

ackfil

l (

refer t

o S

ecti

on 4

69) s

hall

be p

laced

Grad

ed

ag

greg

ate

base t

o b

e p

laced

an

d c

om

pacte

d

in 6

’’ l

ifts

in c

onform

ance w

ith S

ecti

on 5

01.

#5’s

spaced

as s

how

n

*If 1

’-6

’’ w

idth

of t

he c

on

crete

base i

s p

ou

red

to r

est

on

to

p o

f f

oo

tin

g,

the r

ein

fo

rcin

g c

an

be e

lim

inate

d. N

o a

ddit

ional

com

pensati

on

wil

l b

e a

llo

wed

fo

r t

his

op

tio

n.

Pla

ce C

lass S

D T

ype I

I nonw

oven

geo

tex

tile

betw

een

po

ro

us b

ack

fil

l

and a

ppro

ach e

mbankm

ent

Cla

ss S

D T

yp

e I

n

on

wo

ven

geo

tex

tile

.

Cost

to b

e i

ncid

enta

l t

o t

he p

avin

g i

tem

s.


DIRECTOR


Co

ncre

te b

ase

(Mix

No

. 1

or

bett

er)

Fin

ished

gro

undli

ne

#5 T

hre

aded

rebar

dow

el

co

up

ler a

t

1’-

6’’

c/c

DRAINAGE SYSTEM AND BACKFILL FOR ABUTMENTS(FULL CANTILEVER) WITH FIXED BEARINGS OR EXPANSIONBEARINGS WITH LENGTHS CONTRIBUTING TO EXPANSION

LESS THEN OR EQUAL TO 70 FEET

4

Sca

le:

1/4

’’

= 1

’-0

’’

rem

ov

ed

. T

he r

em

ov

ed

mate

rial

wil

l b

e i

ncid

en

tal

to

the p

erti

nent

Str

uctu

re C

oncrete

ite

ms.

6’’

Bott

om

of

pavem

ent

SUB-DR-201

SU

BS

TR

UC

TU

RE

- DR

AIN

GE

Th

e c

ost

of t

he g

eo

tex

tile

wit

hin

th

e l

imit

s s

ho

wn

wil

l be i

ncid

enta

l to

the p

erti

nent

Str

uctu

re

Co

ncre

te I

tem

s.

1.0

VERSION

DETAIL NO.

10-02-2014

APPROVAL

DIRECTOR


DATE:

VERSION



STATE OF MARYLAND



Notes:

1.

2.

4.

Minimum slope of Pipe Underdrain Outlets is ‚''/ft.

3.

6.

5.

wing wall.

be outletted directly through the

system behind the abutment. They shall

shall be independent of the drainage

The drainage system behind wing walls

For Section A-A see Sheet No. 2, 3 or 4

expansion cross beam is called for.

To be used for all expansion abutments where an

PLAN

AA

15' (Typical)+-

Drain in each

direction from

midpoint @ ‚''/ft.

slope (Typ.)cL Expansion

joint cross

beam support

columns (typ.)

Note:

The expansion joint cross

beam is not shown for clarity.

Minimum of one outlet

pipe for each wing wall

Scale: ‘'' = 1'-0''

that underdrain is composed of.

Plug ends of pipes with same material

pipe underdrain (typ.)

6'' Perforated PVC circular

protection or finished ground

abutment onto the slope

Outlet as shown through the

EXPANSION GREATER THAN 70 FEETEXPANSION BEARINGS WITH LENGTHS CONTRIBUTING TO

BACKFILL FOR ABUTMENTS WITHDRAINAGE SYSTEM AND

SU

BS

TR

UC

TU

RE -

DR

AIN

AG

ESUB-DR-202

1.0

10/02/2014

Detail No. SUB-DR-203.

For section through wing wall, see

to the Substructure Concrete item.

complete in place will be incidental

The cost of the PVC underdrains

SE

CT

ION

A-A

Slo

pe

Pro

tecti

on

#5 T

hre

aded

rebar

dow

el

co

up

ler a

t

1’-

6’’

c/c

6’’

P

erf

ora

ted P

VC

Cir

cula

r

Pip

e U

nd

erd

rain

Concre

te B

ase (

Mix

No. 1 o

r bett

er)

30

’-0

’’ M

ax

. (m

easu

red

alo

ng

L a

pp

roach

ro

ad

way

)c

2’-

0’’

1

2

1.

2.

No

tes:

as s

how

n b

ehin

d t

he a

butm

ent

and t

o t

he s

am

e

geo

metr

ics b

eh

ind

th

e a

bu

tmen

t w

ing

wall

s w

hen

Th

e C

on

tracto

r m

ust

pro

vid

e a

well

co

mp

acte

d

su

rface t

o p

lace t

he g

eo

tex

tile

an

d s

ton

e f

ill

again

st.

In f

ill

areas i

t w

ill

be n

ecessary t

o o

verfil

l

a s

uffic

ient

dis

tance s

o t

hat

a w

ell

com

pacte

d

su

rface w

ill

be p

ro

du

ced

wh

en

th

e o

verfil

l is

3.

4.

2’-0’’ min.

Graded

aggregate

base

Appro

ach R

oadw

ay

Pav

em

en

t

3’’

6’’

N

on-P

erf

ora

ted P

VC

Cir

cula

r

Pip

e U

nderd

rain

Outl

et,

Slo

pe 1/4

’’

/ ft

.

Slo

pe a

s s

teep a

s g

round

wil

l all

ow

(T

yp

.) 1

: 2

max

imu

m

Slo

pe 2

’’ /

ft.

Dam

ppro

of

Slo

pe t

o d

rain

tow

ard

ab

utm

en

t

an

d w

ing

wall

s a

t

1/4

’’

/ ft

.

*

*

*

*

they p

arall

el

the h

ighw

ay. (S

ee s

heet

5 o

f 5

)

#5

@ 1

’-6

’’ c

/c

Porous b

ackfil

l (

refer t

o S

ecti

on 4

69) s

hall

be p

laced

Grad

ed

ag

greg

ate

base t

o b

e p

laced

an

d c

om

pacte

d

in 6

’’ l

ifts

in c

onform

ance w

ith S

ecti

on 5

01.

#5’s

spaced

as s

how

n

If 1

’-6

’’ w

idth

of t

he c

on

crete

base i

s p

ou

red

to r

est

on

to

p o

f f

oo

tin

g,

the r

ein

fo

rcin

g c

an

be e

lim

inate

d. N

o a

ddit

ional

com

pensati

on

wil

l b

e a

llo

wed

fo

r t

his

op

tio

n.

Pla

ce C

lass S

D T

ype I

I nonw

oven g

eote

xti

le b

etw

een

poro

us b

ackfi

ll and a

ppro

ach e

mbankm

ent

Cla

ss S

D T

yp

e I

n

on

wo

ven

geo

tex

tile

.

Cost

to b

e i

ncid

enta

l t

o t

he p

avin

g i

tem

s.

Expansio

n j

oin

t cro

ss b

eam

Backw

all

Expansio

n j

oin

t cross

beam

support

colu

mns

Sca

le:

1/4

’’

= 1

’-0

’’

rem

ov

ed

. T

he r

em

ov

ed

mate

rial

wil

l b

e i

ncid

en

tal

to

the p

erti

nent

Str

uctu

re C

oncrete

ite

ms.

Vari

es -

1’-

4’’

Min

., f

ull

len

gth

betw

een

co

lum

ns

DATE:



STATE OF MARYLAND

SHEET OF

APPROVAL


DIRECTOR


42

Bott

om

of

pavem

ent

SUB-DR-202

SU

BS

TR

UC

TU

RE

- DR

AIN

AG

E

DRAINAGE SYSTEM ANDBACKFILL FOR ABUTMENTS (PEDESTAL) WITH

EXPANSION BEARINGS WITH LENGTHS CONTRIBUTING TOEXPANSION GREATER THAN 70 FEET

Th

e c

ost

of t

he g

eo

tex

tile

wit

hin

th

e l

imit

s s

ho

wn

wil

l be i

ncid

enta

l to

the p

erti

nent

Str

uctu

re

Co

ncre

te I

tem

s.

Po

rou

s b

ack

fill

(s

ho

wn

sh

ad

ed

) p

laced

an

d

tam

ped

in

co

nfo

rm

an

ce w

ith

Secti

on

21

0

1.0

VERSION

DETAIL NO.

10-02-2014



STATE OF MARYLAND

SHEET OF

APPROVAL

SE

CT

ION

A-A

#5 T

hre

aded

rebar

dow

el

couple

r a

t

1’-

6’’

c/c

6’’

P

erf

ora

ted

PV

C C

ircu

lar

Pip

e U

nd

erd

rain

30’-

0’’

Max. (m

easure

d a

long L

appro

ach r

oadw

ay)

c

Slo

pe a

s s

teep

as g

ro

un

d

wil

l all

ow

(T

yp

.) 1

: 2

max

imu

m1

2 1.

2.

No

tes:

as s

ho

wn

beh

ind

th

e a

bu

tmen

t an

d t

o t

he s

am

e

geo

metr

ics b

eh

ind

th

e a

bu

tmen

t w

ing

wall

s w

hen

The C

ontr

acto

r m

ust

provid

e a

well

com

pacte

d

surface t

o p

lace t

he g

eote

xti

le a

nd s

tone f

ill

again

st.

In

fil

l a

reas i

t w

ill

be n

ecessary

to

ov

erfil

l

a s

uffic

ient

dis

tance s

o t

hat

a w

ell

com

pacte

d

su

rface w

ill

be p

ro

du

ced

wh

en

th

e o

verfil

l is

3.

2’-0’’ min.

Graded

aggregate

base

3’’

6’’

N

on-P

erf

ora

ted P

VC

Cir

cula

r P

ipe U

nderd

rain

Ou

tlet,

Slo

pe

1/4

’’

/ ft

.S

lope t

o d

rain

tow

ard a

butm

ent

an

d w

ing

wall

s a

t 1

/4 ’

’ /

ft.

*

**th

ey

parall

el

th

e h

igh

way

. (S

ee s

heet

5 o

f 5

)

#5

@ 1

’-6

’’ c

/c

Poro

us b

ackfi

ll pla

ced a

nd

tam

ped

in

co

nfo

rm

an

ce w

ith

Secti

on

21

0

Porous b

ackfil

l (

refer t

o S

ecti

on 4

69) s

hall

be p

laced

Grad

ed

ag

greg

ate

base t

o b

e p

laced

an

d c

om

pacte

d

in 6

’’ l

ifts

in

co

nfo

rm

an

ce w

ith

Secti

on

50

1.

#5’s

spaced

as s

how

n

*If 1

’-6

’’ w

idth

of t

he c

on

crete

base i

s p

ou

red

to r

est

on t

op o

f f

ooti

ng, th

e r

ein

forcin

g c

an

be e

lim

inate

d. N

o a

ddit

ional

com

pensati

on

wil

l b

e a

llo

wed

fo

r t

his

op

tio

n.

Cla

ss S

D T

yp

e I

n

on

wo

ven

geo

tex

tile

.

Cost

to b

e i

ncid

enta

l t

o t

he p

avin

g i

tem

s.

Pla

ce C

lass S

D T

ype I

I nonw

oven g

eote

xti

le b

etw

een

poro

us b

ackfi

ll and a

ppro

ach e

mbankm

ent


Slo

pe p

rote

cti

on

Co

ncrete

base

(Mix

No

. 1

or

bett

er)

Appro

ach R

oadw

ay

Pav

em

en

t

2’-

0’’

Slo

pe 2

’’ /

ft.

Dam

ppro

of

Expansio

n j

oin

t cro

ss b

eam

Backw

all

Ex

pan

sio

n j

oin

t cro

ss

beam

support

colu

mns

Sca

le:

1/4

’’

= 1

’-0’’

4.

rem

ov

ed

. T

he r

em

ov

ed

mate

rial

wil

l b

e i

ncid

en

tal

to

the p

erti

nent

Str

uctu

re C

oncrete

ite

ms.

Vari

es -

1’-

4’’

Min

., f

ull

len

gth

betw

een

co

lum

ns

DATE:

DIRECTOR


Bott

om

of

pavem

ent

DRAINAGE SYSTEM AND BACKFILLFOR ABUTMENTS (SEMI-CANTILEVER) WITH


3 4SUB-DR-202

SU

BS

TR

UC

TU

RE

- DR

AIN

AG

E

Th

e c

ost

of t

he g

eo

tex

tile

wit

hin

th

e l

imit

s s

ho

wn

wil

l be i

ncid

enta

l to

the p

erti

nent

Str

uctu

re

Co

ncre

te I

tem

s.

1.0

VERSION

DETAIL NO.

10-02-2014



STATE OF MARYLAND

SHEET OF

APPROVAL

OFFICE OF STRUCTURESDATE:

DIRECTOR


DRAINAGE SYSTEM AND BACKFILL


4

SE

CT

ION

A-A

6’’

P

erf

ora

ted

PV

C C

ircu

lar

Pip

e U

nd

erd

rain

30’-

0’’

Max. (m

easure

d a

long L

appro

ach r

oadw

ay)

c

Slo

pe a

s s

teep

as g

ro

un

d

wil

l all

ow

(T

yp

.) 1

: 2

max

imu

m1

2

1.

2.

No

tes:

as s

ho

wn

beh

ind

th

e a

bu

tmen

t an

d t

o t

he s

am

e

geo

metr

ics b

eh

ind

th

e a

bu

tmen

t w

ing

wall

s w

hen

The C

ontr

acto

r m

ust

provid

e a

well

com

pacte

d

surface t

o p

lace t

he g

eote

xti

le a

nd s

tone f

ill

again

st.

In

fil

l a

reas i

t w

ill

be n

ecessary

to

ov

erfil

l

a s

uffic

ient

dis

tance s

o t

hat

a w

ell

com

pacte

d

su

rface w

ill

be p

ro

du

ced

wh

en

th

e o

verfil

l is

3.

2’-0’’ min.

Graded

aggregate

base

3’’

6’’

N

on-P

erf

ora

ted P

VC

Cir

cula

r P

ipe U

nderd

rain

Ou

tlet,

Slo

pe

1/4

’’

/ ft

.

Appro

ach R

oadw

ay

Pav

em

en

t

Dam

ppro

of

Slo

pe t

o d

rain

tow

ard

abutm

ent

and w

ing w

all

s

at

1/4

’’

/ ft

.

* **

they

parall

el

th

e h

igh

way

. (S

ee s

heet

5 o

f 5

)

#5

@ 1

’-6

’’ c

/c

Poro

us b

ackfi

ll pla

ced a

nd

tam

ped

in

co

nfo

rm

an

ce w

ith

Secti

on

21

0

Porous b

ackfil

l (

refer t

o S

ecti

on 4

69) s

hall

be p

laced

Grad

ed

ag

greg

ate

base t

o b

e p

laced

an

d c

om

pacte

d

in 6

’’ l

ifts

in

co

nfo

rm

an

ce w

ith

Secti

on

50

1.

#5’s

spaced

as s

how

n

*If 1

’-6

’’ w

idth

of t

he c

on

crete

base i

s p

ou

red

to r

est

on t

op o

f f

ooti

ng, th

e r

ein

forcin

g c

an

be e

lim

inate

d. N

o a

ddit

ional

com

pensati

on

wil

l b

e a

llo

wed

fo

r t

his

op

tio

n.

Pla

ce C

lass S

D T

ype I

I nonw

oven

geo

tex

tile

betw

een

po

ro

us b

ack

fil

l

an

d a

pp

roach

em

ban

km

en

t

Cla

ss S

D T

yp

e I

n

on

wo

ven

geo

tex

tile

.

Cost

to b

e i

ncid

enta

l t

o t

he p

avin

g i

tem

s.

Concre

te b

ase

(Mix

No. 1 o

r

bett

er)

Fin

ished

gro

un

dli

ne

#5 T

hre

aded

rebar

dow

el

couple

r a

t

1’-

6’’

c/c

Slo

pe 2

’’ /

ft.

2’-

0’’

Expansio

n j

oin

t cro

ss b

eam

Backw

all

Ex

pan

sio

n j

oin

t cro

ss

beam

support

colu

mns

Sca

le:

1/4

’’

= 1

’-0’’

4.

rem

ov

ed

. T

he r

em

ov

ed

mate

rial

wil

l b

e i

ncid

en

tal

to

the p

erti

nent

Str

uctu

re C

oncrete

ite

ms.

Vari

es -

1’-

4’’

Min

., f

ull

len

gth

betw

een

co

lum

ns

Bott

om

of

pavem

ent

4SUB-DR-202

SU

BS

TR

UC

TU

RE

- DR

AIN

AG

E

FOR ABUTMENTS (FULL CANTILEVER) WITH

Th

e c

ost

of t

he g

eo

tex

tile

wit

hin

th

e l

imit

s s

ho

wn

wil

l b

e i

ncid

en

tal

to t

he p

erti

nen

t S

tru

cu

tre

Co

ncre

te I

tem

s.

1.0

VERSION

DETAIL NO.

10-02-2014

DATE:



STATE OF MARYLAND

SHEET OF

APPROVAL


DIRECTOR


1 1

DRAINAGE SYSTEM AND BACKFILLFOR WING WALLS THAT ARE PARALLEL TO THE HIGHWAY

6’’

P

erf

ora

ted

PV

C C

ircu

lar

Pip

e U

nd

erd

rain

2’-0’’ min.

Graded

aggregate

base

6’’

N

on-P

erf

ora

ted P

VC

Cir

cula

r P

ipe U

nderd

rain

Ou

tlet,

Slo

pe

1/4

’’

/ ft

.

Slo

pe t

o d

rain

tow

ard a

butm

ent

an

d w

ing

wall

s a

t 1

/4 ’

’ /

ft.

**

*

Poro

us b

ackfi

ll pla

ced a

nd

tam

ped

in

co

nfo

rm

an

ce w

ith

Secti

on

21

0

#5

@ 1

’-6

’’ c

/c

1.

2.

No

tes:

The C

ontr

acto

r m

ust

provid

e a

well

com

pacte

d

surface t

o p

lace t

he g

eote

xti

le a

nd s

tone f

ill

again

st.

In

fil

l a

reas i

t w

ill

be n

ecessary

to

ov

erfil

l

a s

uffic

ient

dis

tance s

o t

hat

a w

ell

com

pacte

d

su

rface w

ill

be p

ro

du

ced

wh

en

th

e o

verfil

l is

3.

4.

Porous b

ackfil

l (

refer t

o S

ecti

on 4

69) s

hall

be p

laced

5.

Grad

ed

ag

greg

ate

base t

o b

e p

laced

an

d c

om

pacte

d

in 6

’’ l

ifts

in

co

nfo

rm

an

ce w

ith

Secti

on

50

1.

as s

how

n b

ehin

d t

he a

butm

ent

win

g w

all

s w

hen t

hey

para

llel

the h

ighw

ay.

#5’s

spaced

as s

how

n

#5 T

hre

aded

rebar

dow

el

couple

r a

t

1’-

6’’

c/c

Fin

ished

gro

undli

ne

*If 1

’-6

’’ w

idth

of t

he c

on

crete

base i

s p

ou

red

to r

est

on t

op o

f f

ooti

ng, th

e r

ein

forcin

g c

an

be e

lim

inate

d. N

o a

ddit

ional

com

pensati

on

wil

l b

e a

llo

wed

fo

r t

his

op

tio

n.

Cla

ss S

D T

yp

e I

n

on

wo

ven

geo

tex

tile

.

Cost

to b

e i

ncid

enta

l t

o t

he p

avin

g i

tem

s.

Concre

te b

ase

(Mix

No. 1 o

r

bett

er)

2’-

0’’

Slo

pe a

s s

teep

as g

ro

un

d

wil

l all

ow

(T

yp

.) 1

: 2

max

imu

m1

2

Slo

pe 2

’’ /

ft.

Appro

ach R

oadw

ay

Pav

em

en

t

Dam

ppro

of

Pla

ce C

lass S

D T

ype I

I nonw

oven

geo

tex

tile

betw

een

po

ro

us b

ack

fil

l

an

d a

pp

roach

em

ban

km

en

t

3’’

SE

CT

ION

TH

RO

UG

H W

ING

WA

LL

Vari

es -

1’-

4’’

Min

.

Sca

le:

1/4

’’

= 1

’-0’’

rem

ov

ed

. T

he r

em

ov

ed

mate

rial

wil

l b

e i

ncid

en

tal

to

the p

erti

nent

Str

uctu

re C

oncrete

ite

ms.

Bott

om

of

pavem

ent

SUB-DR-203

SU

BS

TR

UC

TU

RE

- DR

AIN

AG

E

Fo

r b

rid

ges w

ith

win

g w

all

s t

hat

are n

ot

parall

el

to

hig

hw

ay s

ee s

td. no. R

W-3

01 f

or

deta

ils.

The c

ost

of t

he g

eote

xti

le w

ithin

the l

imit

s s

how

n

wil

l b

e i

ncid

enta

l to

the p

erti

nent

Str

uctu

re

Concrete

ite

ms.

1.0

VERSION

DETAIL NO.

10-02-2014

chapter 02 - substructure section 01 drainage (sub-dr) · 2007-01-30 · chapter 02 - substructure....

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