chapter 11 - structural repairs section 02 concrete ...concrete pier wall denotes location of...

OFFICE OF STRUCTURES STRUCTURAL DETAIL MANUAL

Chapter 11 - Structural Repairs

SECTION 02

CONCRETE REPAIRS (SR-CR)

DATE:

STATE HIGHWAY ADMINISTRATION

DEPARTMENT OF TRANSPORTATION

STATE OF MARYLAND

SHEET OF

APPROVAL

L

L/6 L/6L/3 L/3 Removal limits

for each segment

Deck

Abutment

or pier

A

AGirderAbutment

or pier

CONCRETE GIRDER

ELEVATION

Scale: None

Deck

Remove to sound concrete

Rebuild to these lines (typ.)

6’’ Max.

(typ.)D

W/2 W/2

W

Scale: None

SECTION A-A

A B/3 B/3 B/3

B

B

BCap

ColumncColumnc

F/2 F/2

F

E

6’’ Max. (typ.)

Scale: None

ELEVATION - PIER CAP

Scale: None

SECTION B-B

1.

2.

3.

4.

5.

6.

7.

8.

Section 2Section 1

Section 1 Section 2

Removal limits

for each segment

to these lines, 6’’ maximum (typ.)

DIRECTOR

OFFICE OF STRUCTURES


Verify that the final clearance of all rebar is

2’’ min. The formwork shall be shifted, as

needed to provide 2’’ clearance at all repair areas.

9.

CAST-IN-PLACE CONCRETE

1 2

Note:

D and W are original

girder dimensions.

Note:

E and F are original

pier cap dimensions.

Remove to sound

concrete to these

lines, 6’’ maximum (typ.)

Rebuild to these

lines (typ.)

SR-CR-101

Notes:

Concrete elements are divided into segments. Work

to be performed on sections as provided below.

Refer to Sections 420, 421, and 423.03.

Contractor shall stage the work so that the

worse sections are repaired first.

Contractor shall not work on more than two

nonadjacent sections on each pier cap, column,

or girder at one time.

Contractor shall wait 72 hours after completing

repairs to a section before chipping adjacent

sections, however he may perform

work on other bridge elements.

Contractor shall stop removing

deteriorated concrete when a

maximum depth of 6 in. is reached.

The Engineer shall immediately notify

the Office of Structures if more

removal seems necessary.

Existing reinforcing steel not shown.

For column repair details,

see sheet 2 of 2.

SEQUENCE AND REPAIR DETAILS FOR PIER CAP

ST

RU

CT

UR

AL

RE

PA

IRS

1.0

VERSION

DETAIL NO.

06/28/2017

APPROVAL

H

Vert

ical

rem

ov

al

lim

its

for e

ach s

egm

ent

Bottom of pier cap

CC

ELEVATION

Scale: None

PIER COLUMN

120^

120^ 120^

D6’’ Max. (typ.)

CIRCULAR COLUMN

M

N

6’’ Max. (typ.)

SQUARE COLUMN

Scale: None

SECTION C-C

Section 1

Section 2

Section 3

Section 4

Section 1

Section 3

DIRECTOR

Remove to sound

concrete to these


OFFICE OF STRUCTURESSTATE HIGHWAY ADMINISTRATION


STATE OF MARYLAND

SHEET OF


CAST-IN-PLACE CONCRETE

2 2

Existing groundline

and/or top of footing

Note:

D is original

diameter

of column.

Rebuild to these

lines (typ.)

Note:

M and N are original

column dimensions.

Horizontal removal

limits for each

section

Horizontal

removal limits

for each

section

Section 2

Remove to sound

concrete to these


Rebuild to these

lines (typ.)

SR-CR-101

12

’ M

ax.

12

’ M

ax.

12

’ M

ax.

Notes:

1. When height of columns is more than

12 ft., the Contractor will be

restricted to 12 ft. segments.

2. Refer to Sections 420, 421 and 423.03.

3. For notes, see sheet 1 of 2.

4. The most deteriorated section of

the column shall be repaired first.

5. The engineer shall identify the

order with which the sections are

to be repaired.

DATE:

SEQUENCE AND REPAIR DETAILS FOR PIER COLUMN

ST

RU

CT

UR

AL

RE

PA

IRS

1.0

VERSION

DETAIL NO.

06/28/2017



STATE OF MARYLAND

OF


Note

s:

1.

2.

3.

Scale

: 1

’’ =

1’-

0’’

SEC

TIO

N

Join

t openin

g

4’’

min

.

*

*

*

*

*

Ex

isti

ng

co

ncrete

deck

See N

ote

5 (

typ.)

Depth

of d

ete

rio

rati

on

vari

es

4.

5.

6.

*D

iap

hra

gm

rein

forc

em

en

t sh

ow

n i

s

typic

al.

The r

ein

forcem

ent

patt

ern

may v

ary

.

The c

ontr

acto

r s

hall

conta

ct

the

engin

eer i

f t

he d

ela

min

ate

d c

oncrete

in t

he e

nd

dia

ph

rag

m i

s d

eep

er t

han

the b

ott

om

of t

he d

eck

.

Ex

isti

ng

bars a

s

sh

ow

n

Exis

ting t

russ b

ars

Exis

ting S

IP f

orm

and

dia

ph

rag

m

Ex

isti

ng

sti

rru

ps

Salv

age e

xis

ting s

teel

rein

forcm

ent

bars

.

Cle

an a

nd e

poxy c

oat

exis

ting

rein

fo

rcem

en

t b

ars.

Ad

d a

dd

itio

nal

rein

forc

men

t as i

n

acco

rdan

ce w

ith

Secti

on

42

1.0

3.0

7.

Pie

r deta

il show

n, abutm

ent

deta

il

sim

ilar.

Anchor

edge o

f re

main

ing S

IP f

orm

wit

h

5/8

’’

dia

. g

alv

an

ized

co

ncre

te

anchors

@ 2

’-0’’

c/c

,

4’’

em

bedm

ent.

Refe

r to

Secti

on

42

3.0

3.0

3.

SHEET 1 1SR-CR-102

APPROVAL

DIRECTOR


DATE:

CAST-IN-PLACE CONCRETE REPAIR TOCONCRETE DIAPHRAGM

SECTION AT PIER

Rem

ov

e S

IP t

o r

ep

lace

co

ncrete

to

th

e b

ott

om

of t

he d

iap

hrag

m

Ex

isti

ng

dete

rio

rate

d

concrete

to b

e r

em

oved

and r

epla

ced w

ith t

row

el

grad

e m

orta

r o

r c

ast-

in-p

lace

Mix

No

. 5

co

ncre

te (

or

eq

ual)

.

Ex

isti

ng

ste

el

str

inger/g

irder

*U

se t

ro

wel

grad

e m

orta

r w

hen

th

e

depth

of t

he c

oncrete

rem

oval

or

spall

is l

ess t

han 1

" d

eep, or t

he

volu

me o

f t

he c

oncrete

rem

oval

an

d/o

r s

pall

is l

ess t

han

1 c

ub

ic f

t.

oth

erw

ise, use M

ix N

o. 5 (

or

equal)

co

ncrete

.

1.0

VERSION

DETAIL NO.

06/28/2017

ELEVATION

Scale: None

Existing

pier

Scale: None

SECTION B-B

Remove to sound

concrete to these


B B

Scale: None

Remove to sound

concrete to these


A A

SECTION A-A

T

T



STATE OF MARYLAND

SHEET OF

APPROVAL

1.

2.

3.

4.

5.

6.

7.

ST

RU

CT

UR

AL

RE

PA

IRS


DIRECTOR


2 Pier2 Pier

1

2

2 12

2

Sequence of

construction

(typ.)

1

CONCRETE PIER WALLDenotes location of

deteriorated concrete

1

The limits of

removal and

repair at the

interior of the

pier wall shall

be determined

by the Engineer

Length of pier

cap repair

A

C

B

Repair

sections

(typ.)

A

B

B

C

6’’ Max. (typ.)

C

6’’ Max. (typ.)

Sequence of

construction (typ.)

Note:

T is the original

thickness of the

pier.

Removal limits for

each section of

concrete repair (typ.)

6’’ max. (typ.)

see Section

B-B

6’-0’’ min.6’-0’’ min.3’-0’’ max. 3’-0’’ max.

3’-0’’ max.

Repair sections (typ.)

SR-CR-103

Notes:

Concrete elements are divided into segments. Work to be

performed on sections as provided above.

Refer to Sections 420, 421, and 423.03.

Contractor shall stage the work so that repair sections

are completed following the number sequence: 1, 2, 3, ....,

shown in the Elevation View, and the letter sequence:

A, B, C, ..., shown in the Section Views.

Contractor shall wait 72 hours after completing repairs to

a section before chipping adjacent sections, however he

may perform work on other bridge elements.

The existing concrete shall be removed to

2’’ min. behind the existing reinforcement.








DATE:

CAST-IN-PLACE CONCRETE SEQUENCE AND REPAIR DETAILS FOR CONCRETE PIER WALL

1

1.0

VERSION

DETAIL NO.

06/28/2017

L

L/6 L/6L/3 L/3 Removal limits

for each segment

Deck

Abutment

or pier

A

AGirderAbutment

or pier

CONCRETE GIRDER

ELEVATION

Scale: None

Deck

Remove to sound concrete

Rebuild to these lines (typ.)

6’’ Max.

(typ.)D

W/2 W/2

W

Note:

D and W are original

girder dimensions.

Scale: None

SECTION A-A

A B/3 B/3 B/3

B

B

BCap

ColumncColumnc

F/2 F/2

F

E

6’’ Max. (typ.)

New wire

fabric

Scale: None

ELEVATION - PIER CAP

Scale: None

SECTION B-B

1.

2.

3.

4.

5.

6.

7.

8.

Section 2Section 1

Note:

E and F are original

pier cap dimensions.

Section 1 Section 2

Removal limits

for each segment

to these lines, 6’’ maximum (typ.)

Remove to sound

concrete to these


Rebuild to these

lines (typ.)

New wire fabric

Note:

For new wire fabric

refer to 908.08.

DATE:



STATE OF MARYLAND

SHEET OF

APPROVAL

ST

RU

CT

UR

AL

RE

PA

IRS1

Notes:

Concrete elements are divided into segments. Work

to be performed on sections as provided below.

Refer to Section 423.

Contractor shall stage the work so that the

worse sections are repaired first.

Contractor shall not work on more than two

nonadjacent sections on each pier cap, column,

or girder at one time.

Contractor shall wait 72 hours after completing

repairs to a section before chipping adjacent

sections, however he may perform

work on other bridge elements.





the Office of Structures

if more removal seems necessary.


For column repair details,

see sheet 2 of 2.


DIRECTOR


SR-CR-201

PNEUMATICALLY APPLIED MORTARSEQUENCE AND REPAIR DETAILS FOR PIER CAP

2

1.0

VERSION

DETAIL NO.

06/28/2017

2

DATE:



STATE OF MARYLAND

SHEET

APPROVAL1.

2.

H

Vert

ical

rem

ov

al

lim

its

for e

ach s

egm

ent

Bottom of pier cap

CC

Existing groundline

and/or top of footing

ELEVATION

Scale: None

PIER COLUMN

120^

120^ 120^

D

New wire

fabric

6’’ Max. (typ.)

CIRCULAR COLUMN

Note:

D is original

diameter

of column.

M

N

6’’ Max. (typ.)

Rebuild to these

lines (typ.)

SQUARE COLUMN

Note:

M and N are original

column dimensions.

Scale: None

SECTION C-C

Horizontal removal

limits for each

section

Section 1

Section 2

Section 3

New wire

fabric

Section 4

Section 1

Horizontal

removal limits

for each

section

Section 2

Section 3

Remove to sound

concrete to these

lines, maximum (typ.)

Note:

For new wire fabric

refer to 908.08.

3.

Remove to sound

concrete to these


Rebuild to these

lines (typ.)

ST

RU

CT

UR

AL

RE

PA

IRS

DIRECTOR



12’

MA

X.

12’

MA

X.

12’

MA

X.

Notes:

When height of columns is more than

12 ft., the Contractor will be

restricted to 12 ft. segments.


For notes, see sheet 1 of 2.

SR-CR-201

PNEUMATICALLY APPLIED MORTARSEQUENCE AND REPAIR DETAILS FOR PIER COLUMN

OF 2

1.0

VERSION

DETAIL NO.

06/28/2017



STATE OF MARYLAND

SHEET OF


Note

s:

1.

2.

3.

Scale

: 1

’’ =

1’-

0’’

SEC

TIO

N

Join

t openin

g

4’’

min

.

*

*

*

*

*

Ex

isti

ng

co

ncrete

deck

See N

ote

5 (

typ.)

Depth

of d

ete

rio

rati

on

vari

es

4.

5.

6.

*D

iap

hra

gm

rein

forc

em

en

t sh

ow

n i

s

typ

ical.

Th

erein

fo

rcem

en

t p

att

ern

may v

ary

.

The c

ontr

acto

r s

hall

conta

ct

the

engin

eer i

f t

he d

ela

min

ate

d c

oncrete

in t

he e

nd

dia

ph

rag

m i

s d

eep

er t

han

the b

ott

om

of t

he d

eck

.

Ex

isti

ng

bars a

s

sh

ow

n

Exis

ting t

russ b

ars

Exis

ting S

IP f

orm

and

dia

ph

rag

m

Ex

isti

ng

sti

rru

ps

Rem

ov

e S

IP t

o r

ep

lace

co

ncrete

to

th

e b

ott

om

of t

he d

iap

hrag

m

Ex

isti

ng

dete

rio

rate

d

concrete

to b

e r

em

oved

an

d r

ep

laced

wit

h

Pn

eu

mati

call

y

ap

pli

ed

mo

rtar.

Ex

isti

ng

ste

el

str

inger/g

irder

Salv

age e

xis

ting s

teel

rein

forcm

ent

bars

.

Cle

an a

nd e

poxy c

oat

exis

ting

rein

fo

rcem

en

t b

ars.

Ad

d a

dd

itio

nal

rein

forc

men

t as i

n

acco

rdan

ce w

ith

Secti

on

42

1.0

3.0

7.

Pie

r deta

il show

n, abutm

ent

deta

il

sim

ilar.

Anchor

edge o

f re

main

ing S

IP f

orm

wit

h

5/8

’’

dia

. g

alv

an

ized

co

ncre

te

anchors

@ 2

’-0’’

c/c

,

4’’

em

bedm

ent.

Refe

r to

Secti

on

s 4

23

an

d 4

23

.03

.03

.

APPROVAL

DIRECTOR


DATE:

SR-CR-202 1 1

PNEUMATICALLY APPLIED MORTAR REPAIR TO CONCRETE DIAPHRAGM

SECTION AT PIER 1.0

VERSION

DETAIL NO.

06/28/2017

ELEVATION

Scale: None

Existing

pier

Scale: None

SECTION B-B

Remove to sound

concrete to these


B B

Scale: None

Remove to sound

concrete to these


A A

SECTION A-A

T

T



STATE OF MARYLAND

SHEET OF

APPROVAL

1.

2.

3.

4.

5.

6.

7.

ST

RU

CT

UR

AL

RE

PA

IRS


DIRECTOR


2 Pier2 Pier

1

2

2 12

2

Sequence of

construction

(typ.)

1

Note:

For new wire fabric

refer to 908.08.

CONCRETE PIER WALLDenotes location of

deteriorated concrete

1

The limits of

removal and

repair at the

interior of the

pier wall shall

be determined

by the Engineer

Length of pier

cap repair

A

C

B

Repair

sections

(typ.)

A

B

B

C

6’’ Max. (typ.)

C

6’’ Max. (typ.)

Sequence of

construction (typ.)

PNEUMATICALLY APPLIED MORTAR SEQUENCE AND REPAIR DETAILS FOR CONCRETE PIER WALL

Note:

T is the original

thickness of the

pier.

Removal limits for

each section of

concrete repair (typ.)

6’’ max. (typ.)

see Section

B-B

6’-0’’ min.6’-0’’ min.

Notes:

Concrete elements are divided into segments. Work to be

performed on sections as provided above.


Contractor shall stage the work so that repair sections

are completed following the number sequence: 1, 2, 3, ....,

shown in the Elevation View, and the letter sequence:

A, B, C, ..., shown in the Section Views.

Contractor shall wait 72 hours after completing repairs to

a section before chipping adjacent sections, however he

may perform work on other bridge elements.

If CIP concrete is used in lieu of PAM, the existing concrete

shall be removed to 2’’ min. behind the existing reinforcement.








3’-0’’ max. 3’-0’’ max.

New wire fabric

3’-0’’ max.

New wire fabric

Repair sections (typ.)

SR-CR-203

DATE:

1

1.0

VERSION

DETAIL NO.

06/28/2017

chapter 11 - structural repairs section 02 concrete ...concrete pier wall denotes location of...

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