Departmental Procedure of Bridge works

yogendra borse

The procedure is summarized below:

1.      Survey data for a proposed bridge site is to be submitted by the Field Executive Engineer.

2.      The proposed site is visited by the concern Design Unit Executive Engineer or SE, Design depending upon the length of the bridge.

3.      Inspection Note is issued to the Field Executive Engineer after the site visit.

4.      Once complete data is available with the Design Division, Hydraulics of the proposed bridge is carried out and RTL, Length and other details are finalized.

5.      General Arrangement Drawing (GAD) is then prepared and the same along with Technical note is issued to the concern field Executive Engineer.

6.      Once the estimate, on the basis of GAD issued, is prepared and submitted by the Field Executive Engineer to Design Circle, the same is checked for the provisions and it is countersigned and issued to the Field Executive Engineer.

7.      If the tenders are invited on B1/B2 form, detail design drawings are issued to the Field for construction as per the requirement of the Field Executive Engineer.

8.      If the tenders are invited on Lump sum basis (“C” form Tender) on contractor’s own design, Design Criteria for the project is issued to the field. After finalization of contract, the structural designs and drawings prepared by the Contractor’s consultant are proof checked by Design Circle.

Codes and Specifications

Deputy Engineers in the Designs Circle are expected to prepare proposal, undertake detailed designs andhandle scrutiny of contractor’s designs for bridges. Therefore, they are required to have a knowledge of the various IRC / IS codes and specifications required for design of bridges. 

A list of important codes is given below:

IRC Code	Description
Section 1 - General Features of Design
IRC:5-2015	Standard Specifications and Code of Practice for Road Bridges, Section I – General Features of Design (Eighth Revision)
Section 2 – Loads and Stresses
IRC:6-2017	Standard Specifications and Code of Practice for Road Bridges, Section-II - Loads and Load Combinations (Seventh Revision)
Section 3 - Cement Concrete bridges
IRC:112-2019	Code of Practice for Concrete Road Bridges
IRC:SP:67-2005	Guidelines for Use of External and Unbonded Prestressing Tendons in Bridge Structures
IRC:SP:71-2018	Guidelines for Design and Construction of Precast Pre-tensioned Girders for Bridges (First Revision)
Section 4 - Composite Construction
IRC:22-2015	Standard Specifications and Code of Practice for Road   Bridges, Section VI – Composite Construction (LimitStatesDesign) (Third Revision)
Section 5 – Steel Road Bridges
IRC:24-2010	Standard Specifications and Code of Practice for Road Bridges, Steel Road Bridges (Limit State Method) Third Revision)
Section 6 – Foundation and Substructure
IRC:78-2014	Standard Specifications and Code of Practice for Road Bridges, Section VII-Foundations and Substructures (Revised Edition)
Section 7 - Bearings
IRC:83-2015 (Part-I)	Standard Specifications and Code of Practice for Road Bridges, Section IX Bearings, Part I: Roller & Rocker Bearings (Second Revision)
IRC:83-2018 (Part II)	Standard Specifications and Code of Practice for Road Bridges, Section IX – Bearings, Part II: Elastomeric Bearings, (Second Revision)
IRC:83-2018 (Part III)	Standard Specifications and Code of Practice for Road Bridges, Section IX – Bearings, Part III: POT, PIN, Metallic Guide and Plane Sliding Bearings (First Revision)
IRC:83-2014 (Part IV)	Standard Specifications and Code of Practice for Road Bridges, Section IX – Bearings, Part IV: Spherical and Cylindrical Bearings
Section 8 - Geometrics
IRC:38-1988	Guidelines for Design of Horizontal Curves for Highways and Design Tables (First Revision)
IRC:SP:23-1983	Vertical Curves for Highways
Section 9 - Other bridge structures
IRC:SP:13-2004	Guidelines for the Design of Small Bridges and Culverts (First Revision)
IRC:SP:64-2016	Guidelines for the Analysis and Design of Cast-in-Place Voided Slab Superstructure (First Revision)
IRC:SP:65-2018	Guidelines for Design and Construction of Segmental Bridges (First Revision)
IRC:SP:66-2016	Guidelines for Design of Continuous Bridges (First Revision)
Section 10 – Expansion Joints
IRC:SP:69-2011	Guidelines & Specifications for Expansion Joints (First Revision)
Section 11 – Load Testing
IRC:SP:37-2010	Guidelines for Evaluation of Load Carrying Capacity of Bridges (First Revision)
IRC:SP:51-2015	Guidelines for Load Testing of Bridges (FirstRevision)
Section 12 - Miscellaneous
IRC:87-2018	Guidelines for Formwork, Falsework and Temporary Structures for Road Bridges (Second Revision)
IRC:89-1997	Guidelines for Design and Construction of River Training & Control Works for Road Bridges (First Revision)
IRC:SP:70-2016	Guidelinesforthe Use ofHighPerformanceConcrete(Including Self Compacting Concrete in Bridges)(First Revision)