190687-MR-1100-001.06 - Topographical Survey CMS-830-03-SP-10001

SPECIFICATION

SpecificationTitle: Topographical Survey

SpecificationNumber: CMS-830-03-SP-10001

SpecificationOwner: Civil & Structural

Issuing Authority:

Manager Civil & Structural Tyler/Chief Civil & Structural Engineer London

UNCONTROLLED COPY IF PRINTED Page 1 of 13

"THIS DOCUMENT IS THE PROPERTY OF CHICAGO BRIDGE & IRON COMPANY (CB&I). IT MAY CONTAIN INFORMATION DESCRIBING TECHNOLOGY OWNED BY CB&I AND DEEMED TO BE COMMERCIALLY SENSITIVE. IT IS TO BE USED ONLY IN CONNECTION WITH WORK PERFORMED BY CB&I. REPRODUCTION IN WHOLE OR IN PART FOR ANY PURPOSE OTHER THAN WORK PERFORMED BY CB&I IS FORBIDDEN EXCEPT BY EXPRESS WRITTEN PERMISSION OF CB&I. IT IS TO BE SAFEGUARDED AGAINST BOTH DELIBERATE AND INADVERTENT DISCLOSURE TO ANY THIRD PARTY."

TOPOGRAPHICAL SURVEY

0 Issued for Use JB/NB 05 Jan 2009

Rev Changes Approved Date

Topographical Survey

Specification Number: Revision: Approval Date:

CMS-830-03-SP-10001 0 05 Jan 2009


Table of Contents

Contents Page

1.0 INTRODUCTION....................................................................................................................................... 31.1 Purpose.......................................................................................................................................... 31.2 Scope ............................................................................................................................................. 3

2.0 REFERENCES.......................................................................................................................................... 33.0 DEFINITIONS............................................................................................................................................ 34.0 ACCESS AND PERMITS ......................................................................................................................... 35.0 EXECUTION ............................................................................................................................................. 4

5.1 General........................................................................................................................................... 45.2 Utilities ........................................................................................................................................... 45.3 Topographic Map Contents ......................................................................................................... 45.4 Permanent Reference Monuments.............................................................................................. 65.5 Field Survey Requirements ......................................................................................................... 75.6 Aerial Photography....................................................................................................................... 75.7 Computer Graphics Data ............................................................................................................. 85.8 Survey and Project Coordinate System ..................................................................................... 9

6.0 REPORTING ............................................................................................................................................. 96.1 Materials ........................................................................................................................................ 96.2 Records.......................................................................................................................................... 9

7.0 APPENDICES ......................................................................................................................................... 10APPENDIX 7.1 - TOPOGRAPHIC SURVEY AND MAPPING - SURVEY DATA LEVEL TABLE................... 11



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1.0 INTRODUCTION

1.1 Purpose

The purpose of this specification is to provide the Sub Contractor or Surveyor with requirements for furnishing adequate field data and information on existing facilities, utilities, site topography, and boundaries.

1.2 Scope

1.2.1 This specification prescribes the field survey, photogrammetry and office work required to compile a topographic map of a land area identified in the Contract Documents.

1.2.2 All reports, mapping and drawing text, dimensions and elevations shall be expressed in the English language. Units adopted shall be in the Metric system or English (Imperial) system in accordance with the Project Specifications.

2.0 REFERENCES

Except as modified by the requirements specified herein or the details of the drawings, work included in this specification shall conform to the applicable provisions of relevant National institutions and Government Regulations.

3.0 DEFINITIONS

The following terms are defined as stated, unless otherwise indicated:

Term Definition

Contractor EPC Contractor (CB & I)

Contract documents The complete set of documents that defines the specific obligations and rights of the parties involved in the accomplishment of the work covered by these specifications.

GPS (Global Positioning System)

Describes the survey procedure conforming to the U.S. Federal Geodetic Control Committee (FGCS) standards as outlined in their publication dated May 1988, Version 5.0, reprinted August 1989, for using GPS relative positioning techniques.

Sub-Contractor or Surveyor The individual, partnership, firm or corporation, qualified to practise professional land surveying under the laws of the state, province or country in which the property lies, and is contractually obligated to perform the specified topographic mapping services.

True coordinate position The position of a point as determined by field survey originating on a known control survey marker, and performed to the precision and adjusted as required for second order surveys (i.e. the horizontal error of closure shall not exceed 1 in 20,000 and the angular error of closure shall not exceed ten seconds times the square root of the number of instrument stations in the traverse, all before adjustment).

4.0 ACCESS AND PERMITS

4.1 Where required, approvals and permits shall be sought by the Sub Contractor or Surveyor for access to existing plants within the limits of mapping.

4.2 For the Jetty Areas, permission to enter shall be obtained from relevant Port Authority.

4.3 The Sub Contractor or Surveyor shall obtain all work permits or authorizations required for performance of the work.



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5.0 EXECUTION

5.1 General

5.1.1 All survey works undertaken by the Sub Contractor or Surveyor shall be carried out by qualified surveyors and in accordance with Government Regulations. The Sub Contractor or Surveyor shall ensure compliance with all Health and Safety Regulations of the relevant country.

5.1.2 Detailed field survey works shall be preceded by a reconnaissance survey of the survey area. If this initial field work indicates a need for modification of the work scope, the Sub Contractor or Surveyor shall immediately inform the Contractor.

5.2 Utilities

If the Sub Contractor or Surveyor is required to perform any excavation, he shall ensure that no underground utilities are affected by contacting the relevant authority. Safety of all personnel and general public shall be ensured by performing work at sufficient distance away from the underground and over ground utilities.

5.3 Topographic Map Contents

5.3.1 Limits of Mapping

The mapped area shall include the entire area of the property identified in the separate drawing provided by the Contractor. Any deviation with respect to the extent of the survey boundary shall be advised by the Contractor.

5.3.2 Planimetric Details

5.3.2.1 General

Show accurately all significant natural and manmade features within the limits of mapping including, but not limited to, the following:

1. Highways, roads, streets, driveways- typical details like centreline, edges of roads, lane markings, edge of shoulders, curbs, gutters, drainage, top and toe of embankment, surface type, clearances (vertical and horizontal), road features like lighting posts, traffic lights, large trees etc.

2. Railroads- centreline, top of tie, top of rails, type of rail, top and details of ballast slope, clearances (vertical and horizontal), features like switches, crossings, equipment, junction boxes, large trees etc.

3. Bridges, culverts, headwalls, tunnels4. Walls (top and bottom levels)5. Field lines, overhead power lines including location details of

supports and vertical clearances.6. Pipelines-. location, elevation, type, and size of underground

pipelines and utilities at 10m (30ft) intervals and at the change in direction of the pipelines. The Sub Contractor or Surveyor shall also locate underground pipelines in accordance with As Built drawings and visible features, such as manholes, clean-outs, sumps and etc. in the field.

7. Manholes and other visible at grade utility structures including invert levels, size and materials

8. Buildings and other structures (such as transformers, tanks, towers, paved aprons, locks, and outfalls)

9. Dumps, storage areas10. Shorelines, streams, ditches, channels, and other drainage ways



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11. Clearances vertical and horizontal clearances for roads, railroads, pipes and piperacks

Show the following demarcation lines lying within the mapping area:

1. Property lines and battery limits2. Fence lines including type and height of fences3. Set-back lines 4. Easement lines5. Right-of-way lines6. Associated monuments (including aerial targets)

5.3.2.2 Coordinate Grid System

1. The Sub Contractor or Surveyor shall compile the survey map based on a coordinate grid system.

2. The coordinate grid system for the works shall be any one of the following systems.

a. National Grid Systemb. Local project grid system with Northing/Easting and

origin specified by the Contractor.c. The local project system shall be tied to the National

Grid System at the Permanent Reference Monuments, Project Bench Marks and the origin.

3. Show the grid system on the map true to scale in the right orientation

4. Indicate on the drawing the permanent reference monuments to which the field work is tied for horizontal control.

5.3.2.3 Map Scale

Prepare map for display at a scale consistent with Table 5.1.

5.3.3 Topographic Details

5.3.3.1 General

1. The topographic survey shall be carried out on the basis of a square grid allowing for suitable grid sizes and contour intervals sufficient to show accurate terrain details. The following table 5.1 provides the recommended topographic survey parameters :

Table 5.1: Recommended Map Scales and Contour Intervals

Plots Alignments

Scale 1: 200 or less 1: 250 1: 500 1: 750 1: 1000

Contour vertical Interval, m (ft) 0.25 (0.75) 0.33 (1.0) 0.50 (1.5) 0.75 (2.5) 1 (3.0)

Grid Size m (ft) 10 (30) 15 (50 ) 20 (65) 30 (100) 40 (130)

2. The map shall show spot elevations at all high points and low points, and at points of grade change between contours as necessary to accurately depict irregular terrain features. All invert elevations for storm drains/culverts, open channel drainage channels and sanitary sewer lines within the mapped area shall be shown on the topographic map of the area.



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5.3.3.2 Elevation Datum

The Sub Contractor or Surveyor shall relate map elevations to National and/or local datum, which shall be instructed by the Contractor prior to the commencement of field survey activities.

5.3.3.3 Project Bench Mark

The Sub Contractor or Surveyor shall establish a project bench mark at suitable locations in the vicinity of the project as shown on Contractor supplied project drawing. The project bench marks shall be new permanent reference monuments set by the Sub Contractor or Surveyor or shall be suitable marks placed on secure, stable objects that are easily identifiable and recoverable. Show the project bench marks on the map and clearly identify them by description, true coordinate position, and specified datum.

5.3.4 Map Accuracy

The completed map, when displayed at the specified map scale, shall be based on the National grid system/Local grid system as defined in the project drawings and Section 5.3.2.2 of this specification. Grid lines and Permanent Ground Markers shall be drawn to an accuracy of 0.3mm (1/100 in) maximum tolerance.

5.4 Permanent Reference Monuments

Permanent reference monuments required shall be one of the types defined below. Sub Contractor or Surveyor shall select the type to be used in consideration of the degree of permanency required and of the terrain and physical conditions in the vicinity of the monument. Monuments shall be away from the construction traffic with clear identification details for ease of reference.

5.4.1 Concrete Monument

Concrete monument shall consist of a reinforced concrete post at least 100mm (4in) in width or diameter with its precise position marked by either a point on a brass or aluminium cap, a formed cross, or a metal rod. The monument shall be placed so as to be solid and free from movement. When a brass or aluminium cap is used, it shall have the registration number of the land surveyor responsible or the corporate registration number or name legibly stamped or imprinted on it. The monuments shall be placed at least 600mm (25in) into the ground and shall be solid and free from movement.

5.4.2 Cast iron or Aluminium

Manufactured cast iron or aluminium survey markers shall be no less than 600mm (25in) in length with their precise position marked by a point or cross, and having the registration number or name, legibly stamped or imprinted on them. The monuments shall be placed at least 600mm (25in) into the ground unless encased in concrete, and shall be solid and free from movement. Non-ferrous rod markers shall have ceramic magnets attached to aid in recovery.

5.4.3 Solid or Coated Steel or Aluminium Rods

Solid or coated steel or aluminium rod markers shall be not less than 16mm (0.6in) in diameter and not less than 600mm (25in) in length. These monuments shall have a cap affixed of the same or compatible metal bearing the registration number of the land surveyor in responsible charge, or the corporate registration number or name legibly stamped or imprinted on them. The monuments shall be placed at least 600mm (25in) into the ground unless encased in concrete, and shall be solid and free from movement. Non-ferrous rod markers shall have ceramic magnets attached to aid in recovery.



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5.4.4 Brass and Aluminium Disk

Brass and Aluminium disks shall be not less than 50mm (2in) in diameter, countersunk, and well cemented in a drill hole in either solid rock or concrete with precise positions marked by a point or cross, having the registration number or name legibly stamped or imprinted on them. Ceramic magnets shall be attached or installed with the disks to aid in recovery

5.5 Field Survey Requirements

5.5.1 General

The Sub Contractor or Surveyor shall perform all field survey and reconnaissance work required to establish horizontal and vertical control sufficient to achieve the specified map accuracy. Any sufficient supplementary field survey work to ascertain the true horizontal and vertical location of existing features, verification of discrepancies in the final survey shall be included in the original scope of works..

5.5.2 Field Notes and Records

The Sub Contractor or Surveyor shall maintain clear, neat, and legible field notes showing all measurements made, together with sufficient sketches and narrative descriptions to ensure that the work performed can be accurately interpreted by anyone familiar with common surveying practices and procedures. Two copies of all calculations shall be supplied. Field notes shall be retailed by the Sub Contractor or Surveyor for a minimum period of two years on completion of the survey.

5.5.3 Accuracy

5.5.3.1 The Sub Contractor or Surveyor shall perform field survey work with sufficient precision to ensure that the required accuracy of the finished map is achieved. All readings not complying with the specifications below shall be corrected by the Sub Contractor or Surveyor at his own expense.

5.5.3.2 The computed coordinate position of each horizontal control point used in compiling the map shall be correct within the limits of Second Order, Class II surveys.

5.5.3.3 The horizontal closure for the traverse shall be limited to the following:

1. Distance (ratio)- 1:200002. Angle (secs)- 5 times square root of N where N is the number of

angle stations.3. Vertical (elevation) closure shall be limited to limits of a Third Order

survey. This limit is defined as follows:4. In mm = 12 times the square root of K where K = Distance in

Kilometres5. In ft = 0.05 times the square root of M where M = Distance in Miles

5.6 Aerial Photography

5.6.1 General

The topographic mapping may be accomplished by aerial photogammetric methods using precision aerial mapping cameras. All requirements of this specification and the other contract documents shall be satisfied. If aerial photography is used, a complete 2 sets of prints and 1 set of negatives of all photographs taken shall be furnished to the Contractor.

5.6.2 Flight Plan

When aerial topographic methods of obtaining topographic data are to be used, the Sub Contractor or Surveyor shall prepare and submit a proposed flight plan showing the flight lines to be flown and the ground control points which will be utilized. Each



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flight line will be flown continuously across the project area. The principal points of the first two and the last two exposures of each flight strip shall fall outside the boundaries of the area to be mapped. The flight plan shall be submitted to the Contractor for approval prior to the flying of any aerial photography.

5.7 Computer Graphics Data

5.7.1 General Data Requirements Data Format

a. Electronic data shall be supplied by the Sub Contractor or Surveyor in a format compatible with the generally widely used electronic data transfer systems, and shall not require special file conversion routines to transfer into Contractors preferred format.

b. An electronic design file shall be provided for each of the final topographic maps. A composite file of the total mapped area shall be produced in one electronic design file, in addition to the individual topographic maps. The graphics in this file shall be full size, 1:1. This composite file shall be supplied to the Contractor along with the individual scaled map files.

c. The composite design file shall be sent to the Contractor within two weeks ofcompletion of the survey, with or without contours but complete with all other information and prior to completion of the individual map files.

d. Additional survey data required by the contract documents shall be incorporated into final electronic design file and provided in a suitable (readable) format by the Contractors chosen software in accordance with the following formats:

AUTOCAD: *.dwg or *.dxf or *.txtMICROSTATION : *.dgn or *.dxf

Data presentation shall be as follows:

Point Number, Northing, Easting, Elevation, Description - (P, N, E, Z, Desc.)

5.7.2 3-D Data

All 3-D elements representing contours, breaklines, faultlines and centerlines shall be at the actual Z value.

5.7.3 Data Category Levels

Record map data in separate data category levels in accordance with the Survey Data Level Table in Appendix 7.1

5.7.4 Scale

Record scale-dependent data (such as text, cells, symbols) at a scale factor suitable for display at the specified map scale.

5.7.5 Text

Text height shall be in accordance with the following table:

Table 5.2 Recommended Text Details

Paper Size Text Height mm (in.) Text

A1/A0 2.5 (1/8) General Text

A1/A0 3.5 (1/7) Titles



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5.7.6 Working Units

Set up data files on the basis of the following working units:

(MU) Master Units = 1 meter (3.3ft)

(SU) Subunits = 1000 mm (40 in.)

(PU) Positional Units = 80

5.7.7 Symbols and Patterns

Symbols and patterns incorporated into the map shall be appropriate cells available to the Sub Contractor or Surveyor either of his own creation or as supplied by other software packages. All symbols and patterns used shall be clearly identified as such in the map legend on each drawing delivered.

5.8 Survey and Project Coordinate System

5.8.1 The project coordinate system shall be shown on the Contractor supplied Contract Drawing. All surveys and drawings shall be carried out with respect to the project coordinate system and the plant north shown on the drawing. All project elevations will be with respect to the specified datum.

5.8.2 The project coordinate system origin shall be tied to the National system and defined in the drawing. Any known or identified discrepancy of National system with respect to identified existing benchmarks in the vicinity of the project area shall be reported and resolved before submission of drawings.

6.0 REPORTING

Final reporting shall include as a minimum the following:

a. Executive Summaryb. Equipment Descriptionsc. Logistic Support & Daily operationsd. Data Collection methodse. Drawings.

6.1 Materials

6.1.1 Drawings

6.1.1.1 In addition to the requirements of Section 5.7.1 of this document, drawings shall be provided for the site in electronic format corresponding to AutoCad/ Microstation recent versions.

6.1.1.2 Final version of drawings shall be A0, A1 or A3 size subject to Contractors review/approval of draft copies. Five hard copies of each drawing shall be provided to a metric scale of 1:500 or alternative (see Table 5.1) as agreed.

6.1.2 Magnetic Media

The Sub Contractor or Surveyor shall provide electronic survey data and drawing files on CD ROM (CDFS format).

6.2 Records

6.2.1 All electronic records shall be provided by the Sub Contractor or Surveyor in accordance with clause 5.7 of the specification.

6.2.2 Two sets of legible copies of field notes shall be provided to the Contractor. All field notes, calculations, maps, and survey drawings provided shall be in English unless otherwise specified in the contract documents.



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6.2.3 The originals of survey drawings, plots, and maps shall be retained by the surveyor for a minimum of 2 years or longer if requested by the Contractor.

7.0 APPENDICES

7.1 Topographic Survey and Mapping - Survey Data Level Table



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APPENDIX 7.1 - TOPOGRAPHIC SURVEY AND MAPPING - SURVEY DATA LEVEL TABLE PAGE 1 OF 3

LEVEL DESCRIPTION COLOR LINETYPE

COMMENTS

1 NOTES Yellow 1 GENERAL NOTES, LEGEND, KEY PLAN, NORTH ARROW

2

3 REV CLOUDS Red 3 REVISION CLOUDS

4 REV DELTAS Red 1 REVISION DELTAS

5

6

7 MATCHLINES Blue 6 MATCHLINES

8 COLUMN LINES Red 1 COLUMN LINES

9 DETAIL/SECTION

Red 2 SECTION AND DETAIL SYMBOLS AND RELATED TEXT

10 DIMENSIONS Cyan 1 DIMENSIONS

11

12

13

14 BLDG Gray 3 BUILDING FOOTPRINT

15 PAD Gray 1 BUILDING PAD OUTLINE

16 EQUIP Gray 3 EQUIPMENT OUTLINE

17 PAVING Gray 3 ROADS, SIDEWALKS, PARKING LOTS

18 RAILROADS Gray 3 RAILROADS

19 SHOULDERS Gray 2 ROADS / RAILROAD SHOULDER

20 CENTERLINES Gray 0 ROADS / RAILROADS CENTERLINE

21 STATIONING Gray 2 ROADS / RAILROADS STATIONING

22

23 FENCES Gray 1 FENCES (ALL)

24 MAJOR Gray 1 MAJOR CONTOURS (5, 10, ETC.)

25 MINOR Gray 0 MINOR CONTOURS (1, 2, 3,4,6,7, ETC.)

26 SPOT ELEV Cyan 1 SPOT ELEVATIONS

27 SHORE Blue 1 SHORE LINES

28 FL Gray 1 FLOWLINES

29 RETENTION Gray 3 RETENTION PONDS, HOLDING BASINS

30 SLOPES Gray 3 TOPS AND TOES OF SLOPES AND DIRECTION INDICATORS



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COMMENTS

31 LIMITS Gray 4 LIMITS OF GRADING

32 E CONTROL Gray 3 EROSION CONTROL

33 FOLIAGE Gray 1 FOLIAGE, TREES

34 SD BOXES Gray 2 STORM DRAINAGE/AOC BOXES (MANHOLES, CATCHBASINS)

35 SD PIPES Gray 3 STORM DRAIN/AOC PIPES

36 WASTE STRUCT

Gray 2 UNDERGROUND WASTE STRUCTURE

37 WASTE LINES Gray 3 UNDERGROUND WASTE LINES

38 FIRE Gray 2 FIRE PROTECTION LINES AND STRUCTURES (HYDRANTS, ETC.)

39 POTABLE WATER

Gray 4 UNDERGROUND WATERLINES

40 PL Gray 3 PROPERTY LINES/BOUNDARIES

41 MONUMENTS Gray 2 SURVEY MONUMENTS

42 GEOTECH Gray 2 GEOTECHNICAL DATA

43 GRID Gray 0 GRID

44 FRAME White 0 FRAME/BORDER

45 TITLE BLOCK White 2 TITLE BOX TEXT

46 TRIM White 0 TRIM LINE

47

48

49

50

51

52 MISC TEXT Cyan 1 MISC TEXT

53 MATCHLINE TEXT

Cyan 3 MATCHLINE TEXT

54 COLUMN TEXT Red 1 COLUMN TEXT

55 MISC TEXT White 1 MISC TEXT

56 EQUIP TEXT White 1 EQUIPMENT TEXT

57 R/R TEXT White 1 RAILROAD TEXT

58 FENCE TEXT White 1 FENCE TEXT

59 SD TEXT White 1 STORM DRAIN TEXT

60 WASTE TEXT White 1 WASTE TEXT



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COMMENTS

61 POTABLE WATER TEXT

White 1 POTABLE WATER TEXT

62 SURVEY TEXT White 1 SURVEY TEXT

63 GRID TEXT White 1 GRID TEXT