J.3_C-Box_Culvert_drwaings.pdf

REINFORCED CONCRETE BOX CULVERT

DRAWINGS

ROAD NAME: Compound 2 - Zahn Town, Location: Chainage 5+975

COUNTY: Grand Bassa

A : GENERAL REQUIREMENTS

1. THE BOX CULVERT SIZE AND CONFIGURATION HAS BEEN PROVIDED AS PER SITE

SPECIFIC REQUIREMENTS. BARREL, WING WALLS ARE INTEGRAL ELEMENTS.

2. ALL DIMENSIONS ARE IN MILLIMETER UNLESS OTHERWISE STATED.

CONVERSION FACTOR: 1 MM = 0.03937 INCHES.

3. ALL REINFORCEMENT STEEL DIMENSIONS SHALL BE CONSIDERED AS CENTRE OF

STEEL BAR TO CENTRE OF STEEL BAR.

4. ALL TEMPORARY WORKS AND OBSTRUCTIONS TO WATER FLOW PUT IN PLACE

DURING CONSTRUCTION SHOULD BE REMOVED FROM THE SITE AFTER COMPLETION

OF CONSTRUCTION WORKS.

5. THE BED LEVEL SHOWN ON GENERAL ARRANGEMENT DRAWINGS ARE APPROX.

THESE LEVELS WILL BE FINALIZED AFTER DETAILED GROUND INVESTIGATIONS

AND EVALUATION AFTER EXCAVATION DURING THE CONSTRUCTION PERIOD.

6. UNSUITABLE SOIL UNDER BOX CULVERT, WING WALLS, APRON SHALL BE

EXCAVATED AND REMOVED AND REPLACED WITH HARDCORE/ROCK MATERIAL

COMPACTED WITH A 7 Ton VIBRATORY ROLLER IN LAYERS NOT EXCEEDING 500mm.

THE DEPTH AND EXTENT OF UNSUITABLE MATERIAL SHALL BE AGREED WITH THE

ENGINEER PRIOR TO REMOVAL.

7. NO FILL SHALL BE PLACED AGAINST OR ON TOP OF THE BOX CULVERT UNTIL

CONCRETE IN THE WHOLE STRUCTURE HAS REACHED ITS DESIGN 28 DAYS

STRENGTH.

8. THE BOX CULVERT FOUNDATION BED SHALL COMPRISE OF HARDCORE/ STONE AND

LEAN CONCRETE.

9. THE BOX CULVERT HAS BEEN DESIGNED ASSUMING A MINIMUM FOUNDATION

BEARING CAPACITY OF 42.26 KN/M2. THIS WILL BE VERIFIED ON SITE AFTER

EXCAVATION.

B. CONCRETE REQUIREMENTS

1. CONCRETE GRADES FOR VARIOUS STRUCTURAL ELEMENTS SHALL BE AS FOLLOWS:

a) CONCRETE WEARING SURFACE (Where Specified) GRADE 30

b) APPROACH SLAB GRADE 30

c) RETAINING WALL STEM / RETAINING WALL BASE/TOE WALL GRADE 30

STEM / TOE WALL BASE

d) TOP AND BOTTOM SLAB, VERTICAL WALLS, WING WALLS GRADE 30

e) PARAPET, CURB GRADE 30

f) APRON GRADE 30

h) BLINDING CONCRETE GRADE 15

i) CUT OFF FOUNDATION WALL GRADE 15

2. CONCRETE MATERIALS REQUIREMENTS

a) CEMENT FOR CONCRETE SHALL CONFORM TO ASTM C 150-94

b) FINE AGGREGATE OF CONCRETE SHALL CONFORM TO AASHTO-M6

c) COARSE AGGREGATE OF CONCRETE SHALL CONFORM TO AASHTO-M8 AND SHALL NOT BE GREATER THAN 20mm.

3. 25 X 25 CHAMPFER SHALL BE PROVIDED AT ALL SHARP CORNERS.

4. NO CONCRETE SHALL BE CAST WITHOUT A FUNCTIONING MACHINE CONCRETE

MIXER & CONCRETE VIBRATOR IN PLACE

C. STEEL REINFORCEMENT

1. REINFORCING BARS SHALL BE OF ATLEAST OF SPECIFIED MILD STEEL DEFORMED

BAR WITH A MINIMUM YIELD STRENGTH OF 275 MPa AND CONFORMING TO ASTM A

616M OR EQUIVALENT.

2. CLEAR COVER TO REBARS: CLEAR COVER TO REBARS INCLUDING LINKS/STIRRUPS

SHALL BE AS FOLLOWS UNLESS NOTED OTHERWISE:

a) TOP SLAB 75mm

b) BOTTOM SLAB 75mm

c) PARAPET, CURB, VERTICAL WALLS 75mm

d) RETAINING WALL STEAM / RETAINING WALL BASE /TOE WALL STEAM / TOE WALL BASE 75mm

e) HAND RAILS/STAND POSTS 25mm

3. ALL LAPPING MUST BE STAGGERED.

4. MIN. BAR LAP LENGTH SHALL BE 40 X DIAMETER OF BAR.

5. LAPPING OF MAIN BARS AT OR NEAR THE CENTRE OF SPAN SHOULD NOT BE DONE

6. CONTRACTOR ADVISED TO CHECK ALL STEEL REINFORCEMENT SIZES & SPECS

PRIOR TO DELIVERY TO THE SITE.

D. ENVIRONMENTAL REQUIREMENTS

1. PRECAUTIONS SHOULD BE TAKEN SO THAT THERE IS NO CONTAMINATION OF

FLOWING WATER AT THE CONSTRUCTION SITES.

E. DESIGN LIVE LOAD

1. THE BOX CULVERT STRUCTURES HAVE BEEN DESIGNED TO ACCOMMODATE

40 TONNE GROSS BS.HA LOAD & AASHTO 20 TONNE GROSS HS-20-44 LOADING.

THEY HAVE BEEN STRUCTURALLY DESIGNED BASED ON THE TRRL OVERSEAS ROAD

NOTE 9 BRIDGE DESIGN MANUAL CATALOGUE OF BRIDGE/BOX CULVERT DESIGNS

F: SPECIAL NOTE

1. NO MODIFICATION OR CHANGES TO THE DESIGN & DETAILS IS PERMITTED WITHOUT

WRITTEN AUTHORISATION OF A QUALIFIED STRUCTURAL ENGINEER

GENERAL NOTES

Scale:Sheet No:

Revision # :

Drawn by:

Approved by:

Drawing Title & Detail :

Designed by:

Checked by:

Road Name:

& Location

Date:

Client:

Issued by: Date:

Ministry of Public Works, GOL.

Funded by: USAID Liberia

Ministry of Public Works, Liberia.

FMWH

Not to Scale __ of __

GENERAL

NOTES

Engineering Services for Rural Road Rehabilitation Project

G10-Y32@200 Bar Mark

Spacing (mm)

Reinforcement Steel Nomenclature

Deformed Bar Size

Compound 2 - Zahn Town, Grand Bassa

Box Culvert Outlet Works Ch 5+975

5000 20000

H H

J J

ROAD W

AY

ROAD W

AY

Grouted Stone Protection Section of Earth Channel Cleared and Shaped Downstream Section of Channel beyond scope

PLAN VIEW SHOWING OUTLET PROTECTION WORKS

Existing Irregular Water Channel

Va rie s

J J

Scale:Sheet No:

Revision # :

Drawn by:

Approved by:

Drawing Title & Detail :

Designed by:

Checked by:

Road Name:

& Location

Date:

Client:

Issued by: Date:

Ministry of Public Works, GOL.

Funded by: USAID Liberia

Ministry of Public Works, Liberia.

FMWH

Not to Scale __ of __

GENERAL

NOTES

Engineering Services for Rural Road Rehabilitation Project

G10-Y32@200 Bar Mark

Spacing (mm)

Reinforcement Steel Nomenclature

Deformed Bar Size

ROAD W

AY

ROAD W

AY

Grouted Stone ProtectionSection of Earth Channel Cleared and ShapedUpstream Section of Channel beyond scope

PLAN VIEW SHOWING INLET PROTECTION WORKS

Compound 2 - Zahn Town, Grand Bassa

Box Culvert Inlet Works Ch 5+975

Existing Irregular Water Channe l

Va rie s

25000

Wing & Stem Reinforcement Arrangement

B7-Y12@200

R.C Slab FloorB6-Y16@200

B5-Y20@200

Compacted Stone Bed

Blinding Concrete

Scale:Sheet No:

Revision # :

Drawn by:

Approved by:

Drawing Title & Detail :

Designed by:

Checked by:

Road Name:

& Location

Date:

Client:

Issued by: Date:

Ministry of Public Works, GOL.

Funded by: USAID Liberia

Ministry of Public Works, Liberia.

FMWH

Not to Scale __ of __

GENERAL

NOTES

Engineering Services for Rural Road Rehabilitation Project

G10-Y32@200 Bar Mark

Spacing (mm)

Reinforcement Steel Nomenclature

Deformed Bar Size

Y16

W5-Y16@150 Front W4-Y16@150 Back

W6-Y12@200

B12-Y12@200

B2-Y16@200 Front Face, B1-Y20@200 Back Face

B4-Y20@150 B10-Y12@200

B4-Y20@150

Compound 2 - Zahn Town, Grand Bassa

Double Concrete Box Culverts:

Structural Detail - Ch 5+975

Mass Concrete Cut Off Wall.

100mm Dia PVC Drain Pipe @ Midspan of each Cell

Lower Slab & Aprons Steel Arrangement

Conc.Slab

Upper Slab Steel Arrangement

Conc.Slab

Scale:Sheet No:

Revision # :

Drawn by:

Approved by:

Drawing Title & Detail :

Designed by:

Checked by:

Road Name:

& Location

Date:

Client:

Issued by: Date:

Ministry of Public Works, GOL.

Funded by: USAID Liberia

Ministry of Public Works, Liberia.

FMWH

Not to Scale __ of __

GENERAL

NOTES

Engineering Services for Rural Road Rehabilitation Project

G10-Y32@200 Bar Mark

Spacing (mm)

Reinforcement Steel Nomenclature

Deformed Bar Size

30°

30°30°

B7-Y12@200 Top & Bottom Reinf

B6-Y16@200 Top, B5-Y20@200 Bottom

W2-Y16@150 Top Reinf, W1-Y16@150 Bottom Reinf W3-Y12@200 Top Reinf, W3-Y12@200 Botton Reinf

B4-Y20@150 Top & Bottom Reinf

-B10-Y12@200 Top & Bottom Reinf

A1-Y16@200 Top & Bottom

A2-Y16@200 Top & Bottom

Compound 2 - Zahn Town Road, Grand Bassa Double Concrete Box Culverts:

Structural Detail - Ch 5+975

Plan of Double Cell Box Culvert

400 3750

0 400

Grouted Stone Grass

2500 400 2500

300 300 300

Elevation View

Scale:Sheet No:

Revision # :

Drawn by:

Approved by:

Drawing Title & Detail :

Designed by:

Checked by:

Road Name:

& Location

Date:

Client:

Issued by: Date:

Ministry of Public Works, GOL.

Funded by: USAID Liberia

Ministry of Public Works, Liberia.

FMWH

Not to Scale __ of __

GENERAL

NOTES

Engineering Services for Rural Road Rehabilitation Project

G10-Y32@200 Bar Mark

Spacing (mm)

Reinforcement Steel Nomenclature

Deformed Bar Size

Compound 2 - Zahn Town Road, Grand Bassa

Double Cell Box Culverts: Plan Views - Ch 5+975

4000 4000

A1

A1

300 300

Ro ad C L

A A

BB

Sectional Plan

C

C

D

D

400 5200 400

37506000

Scale:Sheet No:

Revision # :

Drawn by:

Approved by:

Drawing Title & Detail Designed by:

Checked by:

Road Name:

& Location

Date:

Client:

Issued by: Date:

Ministry of Public Works, GOL.

Funded by: USAID Liberia

Ministry of Public Works, Liberia.

FMWH

Not to Scale __ of __

GENERAL

NOTES

Engineering Services for Rural Road Rehabilitation Project

G10-Y32@200 Bar Mark

Spacing (mm)

Reinforcement Steel Nomenclature

Deformed Bar Size

Compound 2 - Zahn Town Road, Grand Bassa Double Concrete Box Culverts:

Sectional Plan - Ch 5+975

F F

Elevation View at Box Culvert

G2-Y16@175

G1-Y16@175

G3-Y12@150

G4-Y12@150

75mm Diameter PVC Weep Holes

Scale:Sheet No:

Revision # :

Drawn by:

Approved by:

Drawing Title & Detail :

Designed by:

Checked by:

Road Name:

& Location

Date:

Client:

Issued by: Date:

Ministry of Public Works, GOL.

Funded by: USAID Liberia

Ministry of Public Works, Liberia.

FMWH

Not to Scale __ of __

GENERAL

NOTES

Engineering Services for Rural Road Rehabilitation Project

G10-Y32@200 Bar Mark

Spacing (mm)

Reinforcement Steel Nomenclature

Deformed Bar Size

B10-Y12@200

B4-Y20@150

P

P Compound 2 - Zahn Town, Grand Bassa Double Cell Box Culverts:

Guard Rail Detail - Ch 5+975

100mm Dia PVC Drain Pipe

Section P-P: Structural Detail - Guard Rail

Typical Section at Guard Post

Typical Section at Hand Rail

G4-Y12@150

G3-Y12@150

H1-Y12@150

H2-Y12@150

Drawn by:

Approved by:

Drawing Title & Detail :

Designed by:

Checked by:

Road Name:

& Location

Date:

Client:

Issued by: Date:

Ministry of Public Works, GOL.

Funded by: USAID Liberia

Ministry of Public Works, Liberia.

FMWH

Not to Scale __ of __

GENERAL

NOTES

Engineering Services for Rural Road Rehabilitation Project

G10-Y32@200 Bar Mark

Spacing (mm)

Reinforcement Steel Nomenclature

Deformed Bar Size

Compound 2 - Zahn Town Road, Grand Bassa Double Concrete Box Culverts:

Structural Detail - Ch 5+975

Wearing Course Tapered (50 - 100mm)

RCC Tb Lean Concrete 75mm Compacted Stone 300mm

Section B - B Culvert Wing Wall & Apron Reinforcement Detail

Mi n 3

Joint Detail X

30mm Shear Key

25 x 30mm Deep Cold Applied Polysulphide Joint Sealer or Alternative

B11-Y16@200

0 25

BOX

CULVERT

OPENING

RUN-ON APPROACH CONCRETE SLAB

10mm Thick Pre-formed Joint Filler Over Full Length

25mm x 300mm Long Dowels Spaced at 400C/C

B10-Y12@200

B4-Y20@150

B2-Y16@200

B1-Y20@200

B12-Y12@200

Mass Concrete (C15)

Drawn by:

Approved by:

Drawing Title & Detail Designed by:

Checked by:

Road Name:

& Location

Date:

Client:

Issued by: Date:

Ministry of Public Works, GOL.

Funded by: USAID Liberia

Ministry of Public Works, Liberia.

FMWH

Not to Scale __ of __

GENERAL

NOTES

Engineering Services for Rural Road Rehabilitation Project

G10-Y32@200 Bar Mark

Spacing (mm)

Reinforcement Steel Nomenclature

Deformed Bar Size

SECTION J - J: BOX CULVERT OUTLET CHANNEL CROSS SECTION

5 - 25m OUT OF CULVERT OUTLET 0 - 25m ON THE INLET SIDE

Max Slope 1: 2

50mm PVC Pipe Drain at 5m intervals

CL

SECTION H - H: BOX CULVERT OUTLET CHANNEL CROSS SECTION

0 - 5m AFTER CULVERT OUTLET APRON

Assumed Existing Ground Profile

TYPICAL INLET & OUTLET DRAINS TYPES & DETAILS

300mm Thick 1:3 Mix Grouted Stone Va rie s -

T

BD

Va rie s - T

BD

Max Slope 1: 1 Compound 2 - Zahn Town, Grand Bassa

Box Culverts: Inlet/Outlet Channel Detail - Ch 5+975

Varies

Drawn by:

Approved by:

Drawing Title & Detail :

Designed by:

Checked by:

Road Name:

& Location

Date:

Client:

Issued by: Date:

Ministry of Public Works, GOL.

Funded by: USAID Liberia

Ministry of Public Works, Liberia.

FMWH

Not to Scale __ of __

GENERAL

NOTES

Engineering Services for Rural Road Rehabilitation Project

G10-Y32@200 Bar Mark

Spacing (mm)

Reinforcement Steel Nomenclature

Deformed Bar Size

Note;

1. The existing road bed surface has to be stripped of any vegetation, organic material and any unsuitable material, and thereafter compacted to the specified density, prior to commencement of embarkment filling.

2. Embarkment filling has to be done in form of several compacted layers not exceeding 200mm thickness, and each layer should be appropriately moistened and compacted to the specified density or compaction.

EMBANKMENT FILLING AT BOX CULVERT APPROACHES

CROSSECTION A1 - A1 AT BOX CULVERT APPROACHES

Box Culverts: Approaches Cross Sections - Ch 5+975

7 %7 %

Embarkment Fill BoQ Item 7.3.1 & 7.3.2

Wearing Course BoQ Item 7.18

Existing Road Surface Before Site Clearance.

However Removal/Stripping of Unsuitable Material do be done Prior to Commencement of Filling Works.

The Site clearance is paid under Bill Item 2.2

Laterite thickness, t = 200mm

Grouted Stone Foundation.

300 x 400mm Along Grouted Stone Wall

200mm Thick Grouted Stone Protection Laid at 1:1.5 Slope

Compound 2 - Zahn Town Road, Grand Bassa

Drawn by:

Approved by:

Drawing Title & Detail :

Designed by:

Checked by:

Road Name:

& Location

Date:

Client:

Issued by: Date:

Ministry of Public Works, GOL.

Funded by: USAID Liberia

Ministry of Public Works, Liberia.

FMWH

Not to Scale __ of __

GENERAL

NOTES

Engineering Services for Rural Road Rehabilitation Project

G10-Y32@200 Bar Mark

Spacing (mm)

Reinforcement Steel Nomenclature

Deformed Bar Size

Compound 2 - Zahn Town Road, Grand Bassa Double Concrete Box Culverts:

Structural Detail - Ch 5+975

B4-Y20@150

B2-Y16@200

B1-Y20@200

B3-Y12@200

B6-Y16@200 B5-Y20@200B8-Y16@200

B9-Y16@200

Section F - F. Reinforcement Detail

B2-Y16@200

B1-Y20@200

B7-Y12@200

2500400400 400

B12-Y12@200

B2-Y16@200

B10-Y12@200

Joint Detail X

20002000

Rock/Sand Bedding

Lean Concrete Blinding

A1-Y16@200 A2-Y16@200

B11-Y16@200

W3-Y12@200

W2-Y16@150

W5-Y16@150 W4-Y16@150 W6-Y12@200

W1-Y16@150

Scale:Sheet No:

Revision # :

Drawn by:

Approved by:

Drawing Title & Detail Designed by:

Checked by:

Road Name:

& Location

Date:

Client:

Issued by: Date:

Ministry of Public Works, GOL.

Funded by: USAID Liberia

Ministry of Public Works, Liberia.

FMWH

Not to Scale __ of __

GENERAL

NOTES

Engineering Services for Rural Road Rehabilitation Project

G10-Y32@200 Bar Mark

Spacing (mm)

Reinforcement Steel Nomenclature

Deformed Bar SizeSelected 300mm Thick Rubble Stone Fill

0 Inlet/Outlet Apron Top

Granular Backfill

Compound 2 - Zahn Town Road, Grand Bassa Double Cell Box Culvert:

Wing Wall Detail - Ch 5+975 c c

Section N - N Reinforcement Detail for Approach Slab Section M - M Section Through Approach Slab

Plan View of Approach Slab

MM

Scale:Sheet No:

Revision # :

Drawn by:

Approved by:

Drawing Title & Detail :

Designed by:

Checked by:

Road Name:

& Location

Date:

Client:

Issued by: Date:

Ministry of Public Works, GOL.

Funded by: USAID Liberia

Ministry of Public Works, Liberia.

FMWH

Not to Scale __ of __

GENERAL NOTES

Engineering Services for Rural Road Rehabilitation Project

G10-Y32@200

Bar Mark

Spacing (mm)

Reinforcement Steel Nomenclature

Deformed Bar Size

Plan View of Approach Slab Reinforcement

NN

A2-Y16 @ 200

A1-Y16 @ 200

Compound 2 - Zahn Town, Grand Bassa Double Cell Box Culverts:

Guard Rail Detail - Ch 5+975

Revision #:

Drawn by:

Approved by:

Drawing Title & Detail Designed by:

Checked by:

Road Name:

& Location

Date:

Client:

Issued by: Date:

Ministry of Public Works, GOL.

Funded by: USAID Liberia

Ministry of Public Works, Liberia.

FMWH

Not to Scale__of __

GENERAL

NOTES

Engineering Services for Rural Road Rehabilitation Project

G10-Y32@200 Bar Mark

Spacing (mm)

Reinforcement Steel Nomenclature

Deformed Bar Size

Compound 2 - Zahn Town Road, Grand Bassa Box Culvert Ground Profile, Ch 5+975

Existing Channel Cross-section @ Inlet

Notes

1. Please note that the above finished top level of the bottom slab is only indicative. The final culvert bottom slab top level shall be finalised on site jointly by the Supervising Engineer & Contractor.

2. The Box Culvert shall be constructed at a min. design slope of 1%. All levels to be jointly confirmed on site by the Supervising Engineer & Contractor.

Bench Mark # 23 Elevation : 94.693mADL Design Flood Elevation (Annual): 93.603mADL Highest Flood Elevation (25 Yrs) : 93.913mADL Inlet Elevation : 92.053mADL Proposed Finished Road Elevation: 94.953mADL(to be confirmed on site) existing road level finished road level finished road level existing road level