FEDERAL DEMOCRATIC REPUBLIC OF ETHIOPIA
ETHIOPIAN ROADS AUTHORITY
STANDARD DETAIL DRAWINGS
2002
Standard Detail Drawings 2002
Preface
PREFACE
Updates:
This Standard Detail Drawings-2001 is one of the series of “Design Manuals, Standard Contract Documents and Specifications” prepared under a credit financing of the International Development Agency (IDA). The consulting services were provided by the Louis Berger Group, Inc.
This manual will be updated and revised from time to time, as deemed appropriate. Significant changes to criteria, procedures or any other relevant issues related to the new policies or revised law of the land, ERA, or that is mandated by the relevant Federal Government Ministry or Agency, should be amended and incorporated in the manual as soon as possible after their date of effectiveness. Other minor changes, not affecting the whole nature of this manual, may be accumulated and made periodically. When a change is approved, new page(s) instituting the revisions, together with the revision date, will be issued and inserted in to the relevant Chapters.
This manual has been developed from current international practice appropriately modified to take account of local experience and conditions. It is written for the practicing Engineer. ERA formed a Project Working Group charged with evaluating and commenting upon the draft manual and guiding the Consultant on the preparation of the final manuals. Members of the Working Group and the Louis Berger Group for this manual consists of the following: 1. Ato Fesseha Taffese A/Manager, Design, Research and Network Management Division and Group Chairman 2. Ato Fekadu Haile Senior Advisor to the General Manager 3. Mr. Peter Drummond Road Sector Development Programme Advisor to the General Manager 4. Mr. Henry S. Mildenhall Contract Administration Specialist 5. Ato Yemane Shiferaw Head Design and Research Branch 6. Ato Yohanese Bantyederu Engineer from the Design and Research Branch Mr. Michael S. Nyquist Mr. Lennart Rahm Mr. Henok Aberra
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All revisions to the Standard Detail Drawings will be made strictly in accordance with the following procedures: (1) Any proposed change will be submitted by or through the Head of the Design (Branch, Division) of ERA. (2) The proposed change, addition, or deletion will be submitted on a Manual Change form 1-1(see the attached form) and forwarded with an explanation of its need and purpose. (3) If the change is approved, the General Manager will sign the Manual Change form and return a copy to the Head of the Design (Branch, Division), who will arrange for the change to be incorporated into the Bridge Design Manual. (4) The Head of the Design (Branch, Division) will re-issue all effected pages of the manual showing the proper revision date as shown on the Manual Change form.1-1.
Louis Berger Group Project Manager Louis Berger Group Pavement Engineer SABA PLC Structural Engineer
Companion Documents and Manuals prepared under the same service are the following: 1. Geometric Design Manual-2002 2. Site Investigation Manual-2002 3. Pavement Design Manual Volume I-2002 (Flexible & Gravel) 4. Pavement Design Manual Volume II-2002 (Rigid Pavements) 5. Overlay/Rehabilitation Manual-2002 6. Drainage Design Manual Volume I & II-2002 7. Bridge Design Manual-2002 8. Standard Environmental Methodologies & Procedures Manual-2002 9. Standard Technical Specifications-2002 10. Standard Bidding Documents For Road Works Contract National Competitive Bidding (NCB)-2002 11. Standard Tendering Documents for Road Works Contract International Competitive Bidding (ICB)-2002 Appropriate reviews and comments were also provided by agencies and individuals through ERA’s Project Working Group. The Working Group wishes to acknowledge for the contributions made by all other specialists within ERA and outside of ERA in the preparation of these Manuals and Documents.
Ethiopian Road Authority
Preface
Standard Detail Drawings 2002
ETHIOPIAN ROADS AUTHORITY STANDARD DETAIL DRAWINGS This area to be competed by the Head of ERA Design (Branch , Division)
MANUAL CHANGE
Section Table Figure
Explanation
Submitted by: __________________ Head of Design (Branch, Divisio Date: ___________________
CHANGE NO._____________ (SECTION NO. CHANGE NO. _____________- ____________
To be deleted
To be inserted
Approved by: ____________________________ ERA General Manager Date: ___________________
Manual change Form 1-1
Ethiopian Road Authority
Standard Detail Drawings 2002
FOREWORD
ACKNOWLEDGEMENTS
This is the first comprehensive Standard Detail Drawings document prepared for the use and technical guidance for design personnel of the Ethiopian Roads Authority and consultants doing structural design for the Authority. However, it may also be used as a guide by other agencies undertaking relevant work in the road sector.
This Standard Detail Drawings-2001 document is based on a review of the design standards of several countries, among which are AASHTO, ITE, FHA, TRB (USA), EBCS (Ethiopia), Swedish Standards and Australian Standards.
The Ethiopian Roads Authority has prepared this Standard Document under a credit from the International Development Agency (IDA) for design of new roads and structures and for the rehabilitation of existing ones in order to standardize design practices in all ERA design works.
In the selection of the appropriate Standard Detail Drawings for Ethiopia, material from these and other sources have been gleaned and evaluated to determine the set of standards most appropriate for Ethiopia and Ethiopian conditions.
The road network comprises a huge national asset that requires adherence to appropriate standards for design, construction and maintenance in order to provide a high level of service. As the length of the engineered road network is increasing, appropriate choice of methods to preserve this investment becomes increasingly important.
The authors of the manual are listed in the preface.
This standard drawing document shall be used in conjunction with the other ERA Design Manuals-2001. The design standards set out in this Manual shall be adhered to unless otherwise directed by the concerned bodies with in ERA. However, I will like to emphasize that careful consideration to sound engineering practice shall be observed in the use of the Manual, and under no circumstances shall the Manual waive professional judgment in applied engineering. For simplification in reference this Manual may be cited as “ERA Standard Detail Drawings–2001”. It is my sincere hope that these standard drawings will provide all users with both a standard reference and a ready source of good practice for the design of roads, and will assist in a cost effective operation, and environmentally sustainable development of our road network. I look forward to the practices contained in this Manual being quickly adopted into our operations, thereby making a sustainable contribution to the improved infrastructure of our country. As this Manual due to Technological development and change, requires periodic updating, comments and suggestions on all aspects from any concerned body, group or individual as feedback during its implementation is expected and will be highly appreciated.
Tesfamichael Nahusenay General Manager Ethiopian Roads Authority
Ethiopian Road Authority
Standard Detail Drawings 2002
Table of Drawings
TABLE OF DRAWINGS BRIDGE DRAWINGS B-01 B-02 B-03 B-04 B-05 B-06 B-07 B-08 B-09 B-10 B-11 B-12 B-13 B-14 B-15 B-16 B-17 B-18 B-19 B-20 B-21 B-22 B-23 B-24 B-25 B-26 B-27 B-28 B-29 B-30 B-31 B-32 B-33 B-34 B-35 B-36 B-37 B-38 B-39 B-40 B-41
Bridge RC slab 6m span; width 4.5m Bridge RC slab 6m span; width 7.3m Bridge RC slab 6m span; width 10.0m Bridge RC slab 8m span; width 4.5m Bridge RC slab 8m span; width 7.3m Bridge RC slab 8m span; width 10.0m Bridge RC slab 10m span; width 4.5m Bridge RC slab 10m span; width 7.3m Bridge RC slab 10m span; width 10.0m Bridge RC Deck Girder 12m. Span; width 4.5m Sheet 1 Bridge RC Deck Girder 12m. Span; width 4.5m Sheet 2 Bridge RC Deck Girder 12m. Span; width 7.3m Sheet 1 Bridge RC Deck Girder 12m. Span; width 7.3m Sheet 2 Bridge RC Deck Girder 12m. Span; width 10.0m Sheet 1 Bridge RC Deck Girder 12m. Span; width 10.0m Sheet 2 Bridge RC Deck Girder 14m. Span; width 4.5m Sheet 1 Bridge RC Deck Girder 14m. Span; width 4.5m Sheet 2 Bridge RC Deck Girder 14m. Span; width 7.3m Sheet 1 Bridge RC Deck Girder 14m. Span; width 7.3m Sheet 2 Bridge RC Deck Girder 14m. Span; width 10.0m Sheet 1 Bridge RC Deck Girder 14m. Span; width 10.0m Sheet 2 Bridge RC Deck Girder 16m. Span; width 4.5m Sheet 1 Bridge RC Deck Girder 16m. Span; width 4.5m Sheet 2 Bridge RC Deck Girder 16m. Span; width 7.3m Sheet 1 Bridge RC Deck Girder 16m. Span; width 7.3m Sheet 2 Bridge RC Deck Girder 16m. Span; width 10.0m Sheet 1 Bridge RC Deck Girder 16m. Span; width 10.0m Sheet 2 Standard Bars Steel Plate Bearing, Fixed 500-1000 kn Type FPB1 Steel Plate Bearing Detail for 12-16m span R.C.D.G. superstructures Steel Roller bearing, Expandable, 500-850 kn type ERB2 Bridge Deck Outlet Drainage Type D1 & D2 Asphaltic Plug Type Bridge Joint System Concrete Guard Rail for R.C. Bridges Curb Stones and Edge Beams Low Level Water Crossing 5 m wide Masonry Abutment for Four Girder Superstructures Composite Bridge 24 m. Span; width 7.3m Sheet 1 Composite Bridge 24 m. Span; width 7.3m Sheet 2 Composite Bridge 24 m. Span; width 7.3m Sheet 3 Composite Bridge 24 m. Span; width 7.3m Sheet 4
B-42 B-43 B-44 B-45 B-46 B-47 B-48 B-49 B-50 B-51 B-52 B-53 B-54
Bridge RC Deck Girder 20m. Span; width 10.0m Sheet 1 Bridge RC Deck Girder 20m. Span; width 10.0m Sheet 2 Bridge RC Deck Girder 30m. Span; width 10.0m Sheet 1 Bridge RC Deck Girder 30m. Span; width 10.0m Sheet 2 Bridge RC Deck Girder 30m. Span; width 10.0m Sheet 3 Bridge RC Deck Girder 30m. Span; width 10.0m Sheet 4 Bridge RC Deck Girder 20m. Span; width 7.3m Sheet 1 Bridge RC Deck Girder 20m. Span; width 7.3m Sheet 2 Bridge RC Deck Girder 30m. Span; width 7.3m Sheet 1 Bridge RC Deck Girder 30m. Span; width 7.3m Sheet 2 Bridge RC Deck Girder 30m. Span; width 7.3m Sheet 3 Bridge RC Deck Girder 30m. Span; width 7.3m Sheet 4 Joint Details for 20m and 30m Span Bridges; width 7.3m or 10m.
G-04 G-05A G-05B G-06 G-07 G-08 G-09 G-10 G-11 G-12 G-13 G-14
T-Junction Cross Junction Staggered Junction Typical Roundabout Driveway Climbing Lane Railway Crossing Bus Lay-By and Parking Bay Traffic Signs Destination Sign Road Marking Curb and Sidewalk, Kilometer and Guide Posts PEDESTRIAN BRIDGE DRAWINGS
BOX CULVERT AND SLAB CULVERT DRAWINGS C-01 C-02 C-03 C-04 C-05 C-06 C-07
Box Culverts Miscellaneous Details Single Box Culvert 3m. Clear Span; 2-4m. Wall height and fill 0-8 Single Box Culvert 4m. Clear Span; 2-4m. Wall height and fill 0-8 Double Box Culvert 3m. Clear Span, 2-4m. Height fill 0-8m. Double Box Culvert 4m. Clear Span, 2-4m. Height fill 0-8m. Single Slab Culverts 1-6 Clear Span; and fill < 8.2m. Double Slab Culverts 3-6 Clear Span. Fill height < 6,0m.
DRAINAGE DRAWINGS D-01 D-02 D-03 D-04 D-05 D-06 D-07 D-08
RC Pipe Culverts Culvert Inlet and Endwall Sheet 1 Culvert Inlet and Endwall Sheet 2 Gutters and Ditches Check Dam and Cascade Sheet 1 Check Dam and Cascade Sheet 2 Curb Drop Inlet 0.75m-1.2m Pipe, Max. Depth (H)-2.7 m Sheet 1 Curb Drop Inlet 0.75m-1.2m Pipe, Max. Depth (H)-2.7 m Sheet 2
P-01 P-02 P-03 P-04 P-05 P-06
GUARDRAIL DRAWINGS R-01 R-02 R-03 R-04 R-05 R-06 R-07 R-08 R-09 R-10
GEOMETRIC AND GENERAL DRAWINGS G-01A G-01B G-01C G-02 G-03
Typical Cross Sections-Sheet 1/3 Typical Cross Sections-Sheet 2/3 Typical Cross Sections-Sheet 3/3 Superelevation Development Curve and Fill Widening
Pedestrian Footbridge 4m. Span; width-3m Pedestrian Footbridge 6m. Span; width-3m Pedestrian Footbridge 8m. Span; width-3m Pedestrian Footbridge 10m. Span; width-3m Pedestrian Steel Truss Bridge 28m. Clear span Pedestrian Steel Truss Span 28m: A, B & Railing Details
Guardrails and Post Guardrail W Beam-Fixed Object Attachment Guardrail Terminal GR7 Guardrails Hardware: W Beam End Section Guardrail Hardware: W Beam Guardrail At Low Fill Culverts Tubular Guardrail Mounted on Culvert Sheet 1 Tubular Guardrail Mounted on Culvert Sheet 2 Tubular Guardrail Mounted on Bridge Slab Guardrail, W Beam: Buried End Terminal Treatment
RETAINING WALL DRAWINGS W-01 W-02 W-03 W-04
Retaining wall, RC Cantilever 2-6m High With Roadway on top Retaining Wall, RC Cantilever 2-6m.High With Roadway on Top Retaining wall, RC Cantilever 2-6m High with 2:1 Inclined Fill Masonry Retaining Wall
Ethiopian Road Authority
