Standard Detail Drawings 2002 Preface

Ethiopian Road Authority

PREFACE

This Standard Detail Drawings-2001 is one of the series of “Design Manuals, Standard ContractDocuments and Specifications” prepared under a credit financing of the International DevelopmentAgency (IDA). The consulting services were provided by the Louis Berger Group, Inc.

This manual has been developed from current international practice appropriately modified to takeaccount 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 manualand guiding the Consultant on the preparation of the final manuals. Members of the Working Group andthe Louis Berger Group for this manual consists of the following:

1. Ato Fesseha TaffeseA/Manager, Design, Research and Network Management Division and Group Chairman

2. Ato Fekadu HaileSenior Advisor to the General Manager

3. Mr. Peter DrummondRoad Sector Development Programme Advisor to the General Manager

4. Mr. Henry S. MildenhallContract Administration Specialist

5. Ato Yemane ShiferawHead Design and Research Branch

6. Ato Yohanese BantyederuEngineer from the Design and Research Branch

Mr. Michael S. Nyquist - Louis Berger Group Project ManagerMr. Lennart Rahm - Louis Berger Group Pavement EngineerMr. Henok Aberra - SABA PLC Structural Engineer

Companion Documents and Manuals prepared under the same service are the following:1. Geometric Design Manual-20022. Site Investigation Manual-20023. Pavement Design Manual Volume I-2002 (Flexible & Gravel)4. Pavement Design Manual Volume II-2002 (Rigid Pavements)5. Overlay/Rehabilitation Manual-20026. Drainage Design Manual Volume I & II-20027. Bridge Design Manual-20028. Standard Environmental Methodologies & Procedures Manual-20029. Standard Technical Specifications-200210. Standard Bidding Documents For Road Works Contract

National Competitive Bidding (NCB)-200211. 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’sProject Working Group. The Working Group wishes to acknowledge for the contributions made by allother specialists within ERA and outside of ERA in the preparation of these Manuals and Documents.

Updates:

This manual will be updated and revised from time to time, as deemed appropriate. Significant changes tocriteria, 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 amendedand 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 madeperiodically. When a change is approved, new page(s) instituting the revisions, together with the revisiondate, will be issued and inserted in to the relevant Chapters.

All revisions to the Standard Detail Drawings will be made strictly in accordance with the followingprocedures:

(1) Any proposed change will be submitted by or through the Head of the Design (Branch, Division) ofERA.

(2) The proposed change, addition, or deletion will be submitted on a Manual Change form 1-1(see theattached 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 acopy to the Head of the Design (Branch, Division), who will arrange for the change to beincorporated into the Bridge Design Manual.

(4) The Head of the Design (Branch, Division) will re-issue all effected pages of the manual showingthe proper revision date as shown on the Manual Change form.1-1.

Preface Standard Detail Drawings 2002

Ethiopian Road Authority

ETHIOPIAN ROADS AUTHORITYSTANDARD DETAIL DRAWINGS

This area to be competed by theHead of ERA Design (Branch ,Division)

MANUAL CHANGECHANGE NO._____________(SECTION NO. CHANGE NO._____________- ____________

SectionTableFigure

Explanation To be deletedTo be

inserted

Submitted by: __________________ Approved by: ____________________________

Head of Design (Branch, Divisio ERA General Manager

Date: ___________________ Date: ___________________

Manual change Form 1-1

Standard Detail Drawings 2002

Ethiopian Road Authority

FOREWORD

This is the first comprehensive Standard Detail Drawings document prepared for the use and technicalguidance for design personnel of the Ethiopian Roads Authority and consultants doing structural designfor the Authority. However, it may also be used as a guide by other agencies undertaking relevant workin the road sector.

The Ethiopian Roads Authority has prepared this Standard Document under a credit from theInternational Development Agency (IDA) for design of new roads and structures and for therehabilitation of existing ones in order to standardize design practices in all ERA design works.

The road network comprises a huge national asset that requires adherence to appropriate standards fordesign, construction and maintenance in order to provide a high level of service. As the length of theengineered road network is increasing, appropriate choice of methods to preserve this investmentbecomes increasingly important.

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 theconcerned bodies with in ERA. However, I will like to emphasize that careful consideration to soundengineering practice shall be observed in the use of the Manual, and under no circumstances shall theManual waive professional judgment in applied engineering. For simplification in reference this Manualmay 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 referenceand 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, commentsand suggestions on all aspects from any concerned body, group or individual as feedback during itsimplementation is expected and will be highly appreciated.

Tesfamichael Nahusenay

General Manager

Ethiopian Roads Authority

ACKNOWLEDGEMENTS

This Standard Detail Drawings-2001 document is based on a review of the design standards of severalcountries, among which are AASHTO, ITE, FHA, TRB (USA), EBCS (Ethiopia), Swedish Standards andAustralian Standards.

In the selection of the appropriate Standard Detail Drawings for Ethiopia, material from these and othersources have been gleaned and evaluated to determine the set of standards most appropriate for Ethiopiaand Ethiopian conditions.

The authors of the manual are listed in the preface.

Standard Detail Drawings 2002 Table of Drawings

Ethiopian Road Authority

TABLE OF DRAWINGS

BRIDGE DRAWINGS

B-01 Bridge RC slab 6m span; width 4.5mB-02 Bridge RC slab 6m span; width 7.3mB-03 Bridge RC slab 6m span; width 10.0mB-04 Bridge RC slab 8m span; width 4.5mB-05 Bridge RC slab 8m span; width 7.3mB-06 Bridge RC slab 8m span; width 10.0mB-07 Bridge RC slab 10m span; width 4.5mB-08 Bridge RC slab 10m span; width 7.3mB-09 Bridge RC slab 10m span; width 10.0mB-10 Bridge RC Deck Girder 12m. Span; width 4.5m Sheet 1B-11 Bridge RC Deck Girder 12m. Span; width 4.5m Sheet 2B-12 Bridge RC Deck Girder 12m. Span; width 7.3m Sheet 1B-13 Bridge RC Deck Girder 12m. Span; width 7.3m Sheet 2B-14 Bridge RC Deck Girder 12m. Span; width 10.0m Sheet 1B-15 Bridge RC Deck Girder 12m. Span; width 10.0m Sheet 2B-16 Bridge RC Deck Girder 14m. Span; width 4.5m Sheet 1B-17 Bridge RC Deck Girder 14m. Span; width 4.5m Sheet 2B-18 Bridge RC Deck Girder 14m. Span; width 7.3m Sheet 1B-19 Bridge RC Deck Girder 14m. Span; width 7.3m Sheet 2B-20 Bridge RC Deck Girder 14m. Span; width 10.0m Sheet 1B-21 Bridge RC Deck Girder 14m. Span; width 10.0m Sheet 2B-22 Bridge RC Deck Girder 16m. Span; width 4.5m Sheet 1B-23 Bridge RC Deck Girder 16m. Span; width 4.5m Sheet 2B-24 Bridge RC Deck Girder 16m. Span; width 7.3m Sheet 1B-25 Bridge RC Deck Girder 16m. Span; width 7.3m Sheet 2B-26 Bridge RC Deck Girder 16m. Span; width 10.0m Sheet 1B-27 Bridge RC Deck Girder 16m. Span; width 10.0m Sheet 2B-28 Standard BarsB-29 Steel Plate Bearing, Fixed 500-1000 kn Type FPB1B-30 Steel Plate Bearing Detail for 12-16m span R.C.D.G. superstructuresB-31 Steel Roller bearing, Expandable, 500-850 kn type ERB2B-32 Bridge Deck Outlet Drainage Type D1 & D2B-33 Asphaltic Plug Type Bridge Joint SystemB-34 Concrete Guard Rail for R.C. BridgesB-35 Curb Stones and Edge BeamsB-36 Low Level Water Crossing 5 m wideB-37 Masonry Abutment for Four Girder SuperstructuresB-38 Composite Bridge 24 m. Span; width 7.3m Sheet 1B-39 Composite Bridge 24 m. Span; width 7.3m Sheet 2B-40 Composite Bridge 24 m. Span; width 7.3m Sheet 3B-41 Composite Bridge 24 m. Span; width 7.3m Sheet 4

B-42 Bridge RC Deck Girder 20m. Span; width 10.0m Sheet 1B-43 Bridge RC Deck Girder 20m. Span; width 10.0m Sheet 2B-44 Bridge RC Deck Girder 30m. Span; width 10.0m Sheet 1B-45 Bridge RC Deck Girder 30m. Span; width 10.0m Sheet 2B-46 Bridge RC Deck Girder 30m. Span; width 10.0m Sheet 3B-47 Bridge RC Deck Girder 30m. Span; width 10.0m Sheet 4B-48 Bridge RC Deck Girder 20m. Span; width 7.3m Sheet 1B-49 Bridge RC Deck Girder 20m. Span; width 7.3m Sheet 2B-50 Bridge RC Deck Girder 30m. Span; width 7.3m Sheet 1B-51 Bridge RC Deck Girder 30m. Span; width 7.3m Sheet 2B-52 Bridge RC Deck Girder 30m. Span; width 7.3m Sheet 3B-53 Bridge RC Deck Girder 30m. Span; width 7.3m Sheet 4B-54 Joint Details for 20m and 30m Span Bridges; width 7.3m or 10m.

BOX CULVERT AND SLAB CULVERT DRAWINGS

C-01 Box Culverts Miscellaneous DetailsC-02 Single Box Culvert 3m. Clear Span; 2-4m. Wall height and fill 0-8C-03 Single Box Culvert 4m. Clear Span; 2-4m. Wall height and fill 0-8C-04 Double Box Culvert 3m. Clear Span, 2-4m. Height fill 0-8m.C-05 Double Box Culvert 4m. Clear Span, 2-4m. Height fill 0-8m.C-06 Single Slab Culverts 1-6 Clear Span; and fill < 8.2m.C-07 Double Slab Culverts 3-6 Clear Span. Fill height < 6,0m.

DRAINAGE DRAWINGS

D-01 RC Pipe CulvertsD-02 Culvert Inlet and Endwall Sheet 1D-03 Culvert Inlet and Endwall Sheet 2D-04 Gutters and DitchesD-05 Check Dam and Cascade Sheet 1D-06 Check Dam and Cascade Sheet 2D-07 Curb Drop Inlet 0.75m-1.2m Pipe, Max. Depth (H)-2.7 m Sheet 1D-08 Curb Drop Inlet 0.75m-1.2m Pipe, Max. Depth (H)-2.7 m Sheet 2

GEOMETRIC AND GENERAL DRAWINGS

G-01A Typical Cross Sections-Sheet 1/3G-01B Typical Cross Sections-Sheet 2/3G-01C Typical Cross Sections-Sheet 3/3G-02 Superelevation DevelopmentG-03 Curve and Fill Widening

G-04 T-JunctionG-05A Cross JunctionG-05B Staggered JunctionG-06 Typical RoundaboutG-07 DrivewayG-08 Climbing LaneG-09 Railway CrossingG-10 Bus Lay-By and Parking BayG-11 Traffic SignsG-12 Destination SignG-13 Road MarkingG-14 Curb and Sidewalk, Kilometer and Guide Posts

PEDESTRIAN BRIDGE DRAWINGS

P-01 Pedestrian Footbridge 4m. Span; width-3mP-02 Pedestrian Footbridge 6m. Span; width-3mP-03 Pedestrian Footbridge 8m. Span; width-3mP-04 Pedestrian Footbridge 10m. Span; width-3mP-05 Pedestrian Steel Truss Bridge 28m. Clear spanP-06 Pedestrian Steel Truss Span 28m: A, B & Railing Details

GUARDRAIL DRAWINGS

R-01 Guardrails and PostR-02 Guardrail W Beam-Fixed Object AttachmentR-03 Guardrail Terminal GR7R-04 Guardrails Hardware: W Beam End SectionR-05 Guardrail Hardware: W BeamR-06 Guardrail At Low Fill CulvertsR-07 Tubular Guardrail Mounted on Culvert Sheet 1R-08 Tubular Guardrail Mounted on Culvert Sheet 2R-09 Tubular Guardrail Mounted on Bridge SlabR-10 Guardrail, W Beam: Buried End Terminal Treatment

RETAINING WALL DRAWINGS

W-01 Retaining wall, RC Cantilever 2-6m High With Roadway on topW-02 Retaining Wall, RC Cantilever 2-6m.High With Roadway on TopW-03 Retaining wall, RC Cantilever 2-6m High with 2:1 Inclined FillW-04 Masonry Retaining Wall