CONSTRUCTION OF WACHEY ZAM (10.8 M SPAN RIGID … · plan of wing walls typical section of wing wall on d/s side 15 ... design division thimphu, ... 10.8m span rcc rigid frame bridge

CONSTRUCTION OF WACHEY ZAM (10.8 M SPAN RIGID FRAME BRIDGE)

ON WANGDUE-TRONGSA HIGHWAY, WANGUE DZONGKHAG

MARCH 2015

DRAWING LIST

COVER PAGE

DRAWING NO.DESCRIPTION

LIST OF DRAWINGSSL.NO.

01

02

04

05

06

07

08

10

11

GENERAL PLAN OF THE BRIDGE

03

12

14

WZ-DL-01

WZ-GN-02

WZ-RC-03

WZ-GP-04

WZ-GP-05

WZ-GE-06

WZ-ABT-07

WZ-ABT-09

WZ-ABT-10

WZ-ABT-12

WZ-ABT-13

13

09 WZ-ABT-08

WZ-WW-14

GENERAL NOTES

REBAR CODES & SHAPE DETAILS

GENERAL PLAN OF THE BRIDGE

GENERAL ELEVATION OF THE BRIDGE

LONGITUDINAL VIEW & FOOTING PLAN

FRONT ELEVATION & SECTION "B-B"

REINFORCEMENT DETAILS

REINF. LIST & REINF. SUMMARY OF ABUTMENT, SLAB,

REINFORCEMENT DETAILS OF FOOTING AND TOP SLAB


PLAN OF WING WALLS

TYPICAL SECTION OF WING WALL ON D/S SIDE

15

WZ-WW-15

TYPICAL SECTION OF WINGWALL ON U/S SIDE

16

WZ-WW-16

SECTIONAL DETAILS & REINFORCEMENT DETAILS OF WZ-RP-17

17

TYPICAL SECTION OF PAVEMENT & DETAILS OF DRAIN

18

WZ-DD-19

KERBS & RAIL POST WZ-ABT-11


KERBS & RAIL POST

KERBS & RAIL POST

20

RAILING POST

19 PLAN SECTIONAL VIEW & REINF. DETAILS OF KERBS WZ-KB-18

SHEET CONTENTS :

ROYAL GOVERNMENT OF BHUTANMinistry of Works & Human settlement

Department of Roads, Design DivisionThimphu, Bhutan

REVISION DATE DRAWING NO.

SCALE:

FIRST ISSUE

NAME & SIGNATURE

(as Sheet A3 size)

NTS

DESIGN

DRAWN

CHECKED

APPROVED

WZ-DL-01FEBUARY 2014WACHEY ZAM

at WacheyOn Wangdue-Trongsa

Primary National Highway

10.8m SPAN RCC RIGID FRAMEBRIDGE

(7.00 M CARRIAGEWAY)LIST OF DRAWING

MASUMI ANDO (Sr. Volunteer, JICA)


JANGCHUK YESHI (Chief Engineer)

SONAM LHAMO (Engineer)

A. GENERAL

1. THE NOTES IN THIS DRAWING SHALL BE READ IN CONJUNCTION WITH ALL RELEVANT DRAWING PERTAINING TO THE BRIDGE.

2. UNLESS OTHERWISE SPECIFIED, ALL DIMENSIONS IN MILLIMETER (mm) AND ALL LEVELS ARE IN METER (m). DIMENSIONS ARE NOT TO BE SCALED AND ONLY WRITTEN DIMENSION ARE TO BE FOLLOWED.

3. THE CONTRACTOR SHALL VERIFY ALL CHAINAGES, REDUCED LEVELS, COORDINATES AND DIMENSIONS BEFORE START OF THE WORK. INCASE OF ANY DISCREPANCY, THE MATTER SHALL BE BROUGHT TO NOTICE OF THE ENGINEER.

4. ABUTMENTS OF THE BRIDGE IS DESIGNED AS PER IRC - 21 & IS 456 USING MIDAS CIVIL.

5. LOADING: CLASS 70 R AS PER IRC.

B. CONCRETEUNLESS OTHERWISE SPECIFICALLY MENTIONED IN THE DRAWINGS OR DIRECTEDBY THE ENGINEER, CONCRETE GRADE SHALL BE AS PER THE RELATED SECTIONOF CONTRACT DOCUMENT PARTLY REPRODUCED AS BELOW:

APPLICATION LOCATION SPECIFIED COMPRESSIVE STRENGTH IN CUBE (28 DAYS) IN MPa

REINFORCED CONCRETE (RCC)FOOTING SLAB, ABUTMENT AND M25RETURN WALL

PLAIN CEMENT CONCRETE (PCC)FOR LEVELING. M10

C. REINFORCEMENT

1. ALL REINFORCEMENT SHALL BE OF HIGH YIELD STRENGTH DEFORMED BARS (MIN fy 500 MPa).

2. SCHEDULLING OF BAR IS DONE IN ACCORDANCE WITH ISO 4066:2000.

3. MINIMUM LAP LENGTH OF REINFORCEMENT SHALL BE CONFORM TO AASHTO/2007. IF 50% OF REINFORCEMENT IS TO BE SPLICED PROVIDE CLASS B AND FOR 100% SPLICING PROVIDE CLASS C AS SHOWN BELOW:

BAR DIA mm

10 300412127321692618114420138422178725224728292732

4. CLEAR CONCRETE COVER TO REINFORCEMENT FOR ABUTMENT AND RETURN WALL IS 50mm. UNLESS OTHERWISE SPECIFIED BY ENGINEER, THIS SHALL BE FOLLOWED THROUGHOUT THE CONSTRUCTION.

5. SPECIFICALLY MADE COVER BLOCKS OF SAME STRENGTH AS THAT OF CONCRETE AND DIMENSION AS PROVIDED IN DRAWINGS SHALL BE ONLY USED TO OBTAIN THE UNIFORMITY OF CLEAR COVER THROUGH OUT THE CONSTRUCTION.

D. WATERWATER TO BE USED IN THE CONCRETING AND CURING SHALL BEPORTABLE WATER.

E. SUPERVISIONCONSTRUCTION WORK MUST BE SUPERVISED BY A COMPETENTSUPERVISION ENGINEER.

374538957121114951809233729313828

DEV.LENGTH, mm

SPLICE LENGTH, mm

CLASS A CLASS B CLASS C3003175637138801064137417242252

2203175637138801064137417242252

SHEET CONTENTS :




SCALE:

FIRST ISSUE

NAME & SIGNATURE

(as Sheet A3 size)

NTS

DESIGN

DRAWN

CHECKED

APPROVED

WZ-GN-02FEBUARY 201410.8m SPAN RCC RIGID FRAME

BRIDGE(7.00 M CARRIAGEWAY)

REBARS CODES ANDSHAPE DETAILS




WACHEY ZAMat Wachey

On Wangdue-TrongsaPrimary National Highway


DETAILED LENGTH HOOK LENGTHUNBEND HOOK LENGTH

OFFSET LENGTH

HOOK EXTENSION

BEND DIAMETER

DETAILED LENGTHUNBEND HOOK LENGTH

BEND DIAMETER

HO

OK

LE

NG

TH

HO

OK

EX

TEN

.

12BNED + BAR


BEND DIAMETER

12 BEND + BAR

OFFSET LENGTH

HOOK EXTN.

HOOK LENGTH


BEND DIAMETER

12 BEND + BAR

HOOK EXTENSION

HOOK LENGTH

OFF

SE

T LE

NG

THB

AR

DIA

BA

R D

IAB

AR

DIA

BA

R D

IA45Á HOOK

90Á HOOK

135Á HOOK

180Á HOOK

REBAR HOOK SPECIFICATION

16

SHAPE CODE

SHPAE

00

a

11

b

Total Length :a

a

Total Length :

r

a

bd

c51

Total Length :2(a+b)+16d

21

b

a c

Total Length :a+b+c-r-2d

SHAPE CODE AS PER ISO 4066 : 2000

a+b - İ r-d

LEGEND :

r = BENDING RADIUS AS PER TABLE 4d = DIAMETER OF BARa/b/c/d = AS SHOWN

REBAR DESIGNATION DIA, mm

AREA, mm2

UNIT WT., kg/m REBAR TYPE

T10 10 79 0.617 IS : 1786 GRADE Fe 500T12 12 113 0.888T16 201 1.578T20 20 314 2.466T25 25 491 3.853T28 28 616 4.834T32 32 804 6.313

IS : 1786 GRADE Fe 500IS : 1786 GRADE Fe 500IS : 1786 GRADE Fe 500IS : 1786 GRADE Fe 500IS : 1786 GRADE Fe 500

TABLE 3 : STANDARD RE-BAR PROPERTIES(UNIT WT. 0.00785 kg / mmĮ /m)

IS : 1786 GRADE Fe 500

1(ART. 5.10 AASHTO LRFD 2007)

TIE/STIRRUPS OTHER 900 1350 900 1800

T10 40 60 60 75 120 65T12 48 72 72 75 144 65T16 64 96 96 96 192 65T20 - 120 240 120 240 80T25 - 150 300 150 300 100T28 - 168 168 336 112T32 - 256 192 384 128

1 ALL REINFORCEMENT SHALL BE COLD BEND

REBAR DESIGNATION

BENDING DIAMETER

TIE/STIRRUPS

STANDARD HOOK EXTENSION, mm

OTHER

TABLE 4 : STANDARD HOOK AND BEND REQUIREMENT

NOTES

A. GENERALALL THE DIMENSIONS ARE IN MILLIMETER UNLESSOTHERWISE SPECIFIED.

B. SHAPE CODE & BAR SHAPETHIS STANDARD SHAPE CODE AND ITS METHODOF MEASUREMENT HAVE BEEN PREPARED ASPER EUROPEAN STANDARED BS EN ISO 4006 : 2000

BAR MARK

41-01-T16-150-BOTTNOS. OF

BAR

BAR MARK

TYPE OF REBAR

SPACING

DIA. OF REBAR

LOCATION/REMARK

SHEET CONTENTS :




SCALE:

FIRST ISSUE

NAME & SIGNATURE

(as Sheet A3 size)

NTS

DESIGN

DRAWN

CHECKED

APPROVED

WZ-RC-03FEBUARY 201410.8m SPAN RCC RIGID FRAME

BRIDGE(7.00 M CARRIAGEWAY)

REBARS CODES ANDSHAPE DETAILS




WACHEY ZAMat Wachey



T

R

R

S

T

Existing Road

S

SHEET CONTENTS :




SCALE:

FIRST ISSUE

NAME & SIGNATURE

(as Sheet A3 size)

1:250

DESIGN

DRAWN

CHECKED

APPROVED

WZ-GP-04FEBUARY 2014

GENERAL PLAN





(7.00 M CARRIAGEWAY)

WACHEY ZAMat Wachey



T

R

R

S

T

S

A A

B B

C C

E E

D D

UU

VV

SHEET CONTENTS :




SCALE:

FIRST ISSUE

NAME & SIGNATURE

(as Sheet A3 size)

1:200

DESIGN

DRAWN

CHECKED

APPROVED

WZ-GP-05FEBUARY 2014

GENERAL PLAN-02






WACHEY ZAMat Wachey



LWL=94.095

HFL=95.095

Bridge Span of 10.80m

SLOPE 1:0.5

SLO

PE 1

:0.5

SHEET CONTENTS :




SCALE:

FIRST ISSUE

NAME & SIGNATURE

(as Sheet A3 size)

1:175

DESIGN

DRAWN

CHECKED

APPROVED

WZ-GE-06FEBUARY 2014

GENERAL ELEVATION






WACHEY ZAMat Wachey



LONGITUDINAL VIEWFOOTING PLAN

SHEET CONTENTS :




SCALE:

FIRST ISSUE

NAME & SIGNATURE

(as Sheet A3 size)

1:50

DESIGN

DRAWN

CHECKED

APPROVED

WZ-ABT-07FEBUARY 2014

LONGITUDINAL VIEW&

FOOTING PLAN MASUMI ANDO (Sr. Volunteer, JICA)





WACHEY ZAMat Wachey



B

B

FRONT ELEVATION

℄

SIDE ELEVATION

SECTION B-B

NOTES

GENERAL

1. ALL THE DIMENSIONS ARE IN MILLIMETER UNLESS OTHERWISE SPECIFIED.

2. DONOT SCALE THIS DRAWINGS. USE GIVEN DIMENSIONS ONLY DURING THE CONSTRUCTION.

MATERIALS

1. CONCRETE 28 DAYS STRENGTH MUST BE, fc = 25 MPa.

2. YIELD STRENGTH OF STEEL, fy = 500 MPa (GRADE Fe 500, IS 1786).

3. SPLICE LENGTH SHOULD BE PROVIDED AS SHOWN IN THE GENERAL NOTES.

COVERINGCLEAR CONCRETE COVER TOREINFORCEMENT IS 50 mm

3. DURING THE CONSTRUCTION,

CONTRACTOR SHOULD CHECK

ALL DIMENSIONS, LEVELS AND

MEASUREMENTS. DISCRIPENCY

ANY SHOULD BE REPORTED TO

ENGINEER BEFORE EXECUTION.

BAR MARK

41-01-T16-150-BOTTNOS. OF

BAR

BAR MARK

TYPE OF REBAR

SPACING

DIA. OF REBAR

LOCATION/REMARK

SHEET CONTENTS :




SCALE:

FIRST ISSUE

NAME & SIGNATURE

(as Sheet A3 size)

1:50

DESIGN

DRAWN

CHECKED

APPROVED


FRONT ELEVATION &SECTION B-B VIEW






WACHEY ZAMat Wachey



1 1

FOOTING REINFORCEMENT DETAIL

View "1 - 1"

SHEET CONTENTS :




SCALE:

FIRST ISSUE

NAME & SIGNATURE

(as Sheet A3 size)

1:60

DESIGN

DRAWN

CHECKED

APPROVED


REINFORCEMENTDETAILS OF FOOTING &

TOP SLAB MASUMI ANDO (Sr. Volunteer, JICA)





WACHEY ZAMat Wachey



SHEET CONTENTS :




SCALE:

FIRST ISSUE

NAME & SIGNATURE

(as Sheet A3 size)

NTS

DESIGN

DRAWN

CHECKED

APPROVED

T - HIGH YIELD DEFORMED BARY - DEFORMED MS BARR - ROUND MS BAR

INDICATES BAR CUT POINT

REINF. LIST AND REINF.SUMMARY OF ABUTMENT,SLAB, KERBS & RAIL POST


2. DO NOT SCALE THE DRAWINGS. USE THE GIVEN DIMENSIONS ONLY.

3. DURING THE CONSTRUCTION, THE CONTRACTOR MUST CHECK THE DIMENSIONS, LEVELS AND MEASUREMENTS. DISCREPANCY IF ANY TO BE REPORTED TO THE ENGINEER BEFORE EXECUTION.

4.. CLEAR COVER OF 50 MM SHOULD BE PROVIDED FOR THE ABUTMENT WALLS.

1. CONCRETE 28 DAYS STRENGTH IN CUBE FOR ABUTMENTS AND, SEISMIC ARRESTOR AND RAIL POSTS IS M 25.


3. DETAILS OF STEEL IS MENTIONED IN THE DRAWINGS AND ITS QUANTITY IN THE BAR BENDING SCHEDULE.

SHEET CONTENTS : REVISION DATE DRAWING NO.

SCALE:

NAME & SIGNATURE







a

b

cd

WACHEY ZAMat Wachey












a

b

SHEET CONTENTS :




SCALE:

FIRST ISSUE

NAME & SIGNATURE

(as Sheet A3 size)

NTS

DESIGN

DRAWN

CHECKED

APPROVED







Bottom bar in longitudinal direction

Bottom bar in transverse direction

Stirrups

Stirrups

Top bar in transverse direction

c

c

Top bar in longitudinaldirection

06 T16 3300 16 16 52800 211 256 2868 Face bar in longitudinal direction

07 T16 8000 16 16 128000 211 256 Face bar in transverse direction

8(1) T20 5528 62 62 3427361 Vertical bar at the outside

8(2) T20 4148 60 60 2488801

9(1) T20 10664 62 62 661168 211

380

380

11

11

Horizontal bar at the outside11 T16 7500 177 177 13275001 750000

12 T12 7500 155 155 11625001 00

b

c

a

b

c

c

c

c7568

5198

3818 Vertical bar at the outside

cVertical bar at the outside

Vertical bar at the outside9(2) T20 10664 1 60 60 639840 21 c

10 T16 8468 1 122 122 1033096 11

7500

Vertical bar at the inside

Horizontal bar at the inside

a

b

cd

a

b

cd

c

c

c

b

c


WACHEY ZAMat Wachey



SHEET CONTENTS :



REVISION DATE DRAWING NO.NAME & SIGNATURE

DESIGN

DRAWN

CHECKED

APPROVED










SHEET CONTENTS : REVISION DATE DRAWING NO.

SCALE:

FIRST ISSUE

NAME & SIGNATURE

(as Sheet A3 size)

NTS








b

WACHEY ZAMat Wachey



T

R

R

S

T

S

SHEET CONTENTS :




SCALE:

FIRST ISSUE

NAME & SIGNATURE

(as Sheet A3 size)

1:150

DESIGN

DRAWN

CHECKED

APPROVED

WZ-WW-14FEBUARY 2014

PLAN OF WINGWALLS






WACHEY ZAMat Wachey



RRM WALL

SECTIONAL VIEWA-A & R-R

(SCALE 1:60)

RRM WALL

SECTIONAL VIEWC-C & T-T

(SCALE 1:50)

SECTIONAL VIEWB-B & S-S

(SCALE 1:50)

RRM WALL

SHEET CONTENTS :




SCALE:

FIRST ISSUE

NAME & SIGNATURE

(as Sheet A3 size)

AS SHOWN

DESIGN

DRAWN

CHECKED

APPROVED






(7.00 M CARRIAGEWAY)TYPICAL SECTION OFWING WALLS ON D/S

SIDE

WACHEY ZAMat Wachey



RRM WALL

SECTIONAL VIEWD-D & U-U

(SCALE 1:60)

RRM WALL

SECTIONAL VIEWE-E & V-V

(SCALE 1:60)

SHEET CONTENTS :




SCALE:

FIRST ISSUE

NAME & SIGNATURE

(as Sheet A3 size)

AS SHOWN

DESIGN

DRAWN

CHECKED

APPROVED


TYPICAL SECTION OFWING WALLS ON U/S

SIDE MASUMI ANDO (Sr. Volunteer, JICA)





WACHEY ZAMat Wachey



(75 Ï GI PIPE) 120

120

2

2

REINFORCEMENT DETAIL OF RAILINGSCALE 1:20

01

03

04

02

2525

25

25

2525

25

01

03

04

02

01

03

04

02

RAIL POST(150 X 150)

RAILING(75 Ï GI PIPE)F

F

ELEVATION OF RAILINGSCALE 1:25

BHUTANESE ARCHITECTURE(RAIL POST HEAD)

F

F F

F

1

1

RAIL (GI PIPE)

RAIL POST

1

1.5 % CROSS SLOPE

DECKSECTION 1-1SCALE 1:25

33

1.5 % CROSS SLOPE

DECK

2X2=4-01-T16

7-02-T10-150-STIRRUP

2X2=4-03-T122-04-T10

SECTION 2-2SCALE 1:25

150x150RCC POST

RAILING(75 Ï GI PIPE)

15 CHAMFERPLAN OF RAILINGSCALE 1:25

NOTES

GENERAL

1. ALL THE DIMENSIONS ARE IN MILLIMETER UNLESS OTHERWISE MENTIONED.

2. DO NOT SCALE THIS DRAWINGS. USE GIVEN DIMENSIONS ONLY.


MATERIALS

1. CONCRETE 28 DAYS STRENGTH IN CUBE, fck = 30 MPa.


3. DETAILS OF STEEL IS MENTIONED IN THE DRAWING AND ITS QUANTITY IN THE BAR BENDING SCHEDULE.

COVERING

a. RAIL POST (ALL SIDES) = 25 MM

T - HIGH YIELD DEFORMED BARY - DEFORMED MS BARR - ROUND MS BAR INDICATES BAR CUT POINT

BAR MARK

40-04-T 16-125-BOTT.

NOS. OF BAR

BAR MARK

TYPE OF REBAR

SPACING

DIA. OF REBARLOCATION / REMARK

NOTES

1. THE Ï 75 GI PIPE USED AS RAIL SHOULD BE IN FULL LENGTH OF BRIDGE (CULVERT).

2. THE TRADITIONAL STYLE HEAD OF RAIL POST SHOULD BE CARRIED OUT BY SPECIALIST IN SCULPTURE.

SECTION "F - F"SCALE 1:5

75 Ï 2mm THICKGI PIPE

2-01-T16

2-01-T16

7-02-T10-150(STIRRUP)

SECTION 3 - 3SCALE 1:5

SHEET CONTENTS :




SCALE:

NAME & SIGNATURE

(as Sheet A3 size)

DESIGN

DRAWN

CHECKED

APPROVED

SECTIONAL DETAILS &REINFORCEMENT

DETAILS OF RAILINGPOST

SHEET CONTENTS : REVISION DATE

FIRST ISSUE

NAME & SIGNATURE

AS SHOWN

WZ-RP-17FEBUARY 2014







WACHEY ZAMat Wachey


(75 Ï GI PIPE) 120

120

2

2

REINFORCEMENT DETAIL OF RAILINGSCALE 1:20

01

03

04

02

2525

25

25

2525

25

01

03

04

02

01

03

04

02

RAIL POST(150 X 150)

RAILING(75 Ï GI PIPE)F

F

ELEVATION OF RAILINGSCALE 1:25

BHUTANESE ARCHITECTURE(RAIL POST HEAD)

F

F F

F

1

1

RAIL (GI PIPE)

RAIL POST

1

1.5 % CROSS SLOPE

DECKSECTION 1-1SCALE 1:25

33

1.5 % CROSS SLOPE

DECK

2X2=4-01-T16

7-02-T10-150-STIRRUP

2X2=4-03-T122-04-T10

SECTION 2-2SCALE 1:25

150x150RCC POST

RAILING(75 Ï GI PIPE)

15 CHAMFERPLAN OF RAILINGSCALE 1:25

NOTES

GENERAL

1. ALL THE DIMENSIONS ARE IN MILLIMETER UNLESS OTHERWISE MENTIONED.

2. DO NOT SCALE THIS DRAWINGS. USE GIVEN DIMENSIONS ONLY.


MATERIALS

1. CONCRETE 28 DAYS STRENGTH IN CUBE, fck = 30 MPa.


3. DETAILS OF STEEL IS MENTIONED IN THE DRAWING AND ITS QUANTITY IN THE BAR BENDING SCHEDULE.

COVERING

a. RAIL POST (ALL SIDES) = 25 MM

T - HIGH YIELD DEFORMED BARY - DEFORMED MS BARR - ROUND MS BAR INDICATES BAR CUT POINT

BAR MARK

40-04-T 16-125-BOTT.

NOS. OF BAR

BAR MARK

TYPE OF REBAR

SPACING

DIA. OF REBARLOCATION / REMARK

NOTES

1. THE Ï 75 GI PIPE USED AS RAIL SHOULD BE IN FULL LENGTH OF BRIDGE (CULVERT).

2. THE TRADITIONAL STYLE HEAD OF RAIL POST SHOULD BE CARRIED OUT BY SPECIALIST IN SCULPTURE.

SECTION "F - F"SCALE 1:5

SECTION 3 - 3SCALE 1:5

SHEET CONTENTS :




SCALE:

NAME & SIGNATURE

(as Sheet A3 size)

DESIGN

DRAWN

CHECKED

APPROVED

SECTIONAL DETAILS &REINFORCEMENT

DETAILS OF RAILINGPOST


FIRST ISSUE

NAME & SIGNATURE

AS SHOWN

WZ-RP-17FEBUARY 2014







WACHEY ZAMat Wachey


TYPICAL SECTION OF PAVEMENT

RRM in CM 1:4

10cm thick PCC

CROSS SECTION OF U-SHAPEDDRAIN FROM COLLECTION CHAMBER

Road Level

RRM in CM 1:4

15cm thick PCC

CROSS SECTION OF L-SHAPEDDRAIN OF APPROACH ROAD

SECTION "S - S"

Cover tocollection chamber

RRM in CM 1:4

PCC for levelling

Area to rest cover

SS

PLAN (TOP VIEW) OF COLLECTION CHAMBER

SHEET CONTENTS :




SCALE:

NAME & SIGNATURE

(as Sheet A3 size)

DESIGN

DRAWN

CHECKED

APPROVED

TYPICAL SECTION OFPAVEMENT& DETAILS OF

DRAIN


FIRST ISSUE

NAME & SIGNATURE

AS SHOWN

WZ-DD-19FEBUARY 2014







WACHEY ZAMat Wachey


Documents

CONSTRUCTION OF WACHEY ZAM (10.8 M SPAN RIGID … · plan of wing walls typical section of wing wall on d/s side 15 ... design division thimphu, ... 10.8m span rcc rigid frame bridge