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WRITE-UP ON DEVELOPMENT OF CIVIL LAYOUT DRAWINGS

(INPUT REQUIREMENT FROM OTHER DISCIPLINES AND SEQUENCE OF CIVIL LAYOUT

DEVELOPMENT)

INPUT REQUIREMENTS FOR DEVELOPMENT OF CIVIL LAYOUTS

1. Overall Plot Plan from Piping with final location of all services like buildings,

roads, shafts, pipe rack and u/g piping corridors etc.

2. Site grading drawing based on topographic surveys.

3. Structural detailed drawings for foundations of buildings and other structures

like equipment foundation etc.

4. Piping layout drawings for water pipes laid u/g with corridor/bed level of 

corridor. Also location of supports for a/g piping like pipe sleepers, pipe racks

etc.

5. Overall Electrical/Instrumentation cable layouts including buried cable

trenches and RCC lined cable trenches, cable crossing under roads with size

of cable ducts.

6. Overall layout of SW Drainage system u/g piping, catch pits, manholes with

outfall point etc.

7. Overall Layout of overflow channel with location and size of Box culverts for

road crossings and its outfall to wadi/evaporation ponds as per Plot Planrequirement.

8. Overall Layout of Sanitary sewer system.

SEQUENCE OF CIVIL LAYOUT DEVELOPMENT (Drawings in 1:200 scale, for each

zone)

Rev A.: Mark road and fence layout on the basis of Overall Plot Plan. Only main

roads will be shown in first issue.

Rev B/0: Mark SW Drainage Piping layout with location of Catch Pits and

Manholes. To mark available Structural foundations issued till then, all

piping information available for u/g piping corridors, a/g Piping support

locations etc. This revision can be issued for construction for some

items.

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Rev. 1: All u/g Process Piping developed on the basis of Piping GADs. Also

marking buried/RCC cable trenches and details of crossings of u/g

Process/sewer Pipes, SW Drain Pipes and Cable trenches. Add some

more structural foundations as available.

Rev. 2: Finalise civil layouts with all crossing details for road crossings as wellas all u/g crossings of all utility services. To be issued as final IFC

drawing.

More than 2 revisions may be needed depending on availability of 

input data, revision of input data or some other unforeseen

development.

General observations:

1. Area division (Zones) will be different than envisaged at present for Road andFence layouts or Civil layouts. As more details will need to be shown, smaller

scale of 1:200 to be adopted, this will require more number of drawings per

station, i.e. more time consumption. Please also note that more man-hour

requirement will also need more manpower at GGN office, which is not

available here at present.

2. This activity will need more coordination with other disciplines, which is

envisaged through Wrench. As wrench is presently not available at GGN

office, this constraint will hamper the progress.