TECHNICAL SPECIFICATION FOR DETAIL SURVEY …

1 GETCO/E/TS SOL 056/R0 DT. 28/03/2008 GUJARAT ENERGY TRANSMISSION CORPORATION LTD. Sardar Patel Vidyut Bhavan, Race Course, Vadodara: 390 007 TECHNICAL SPECIFICATION FOR DETAIL SURVEY OF TRANSMISSION LINES 400/220KV USING MODERN TECHNIQUES (PART-II) GETCO/E/TS SOLO 56/R1 DT. 15/11/2008 GETCO/E/TS SOL 056/R0 DT. 28/03/2008 INDEX Clause No. Description Page No. details of Transmission Line. 3 Scope of work 3 Route Alignment 4 Detailed SURVEY 5 Geotechnical Investigation 10 Statutory Requirement and Standards 26 Annexure - A General description of towers & Foundation & TECHNICAL Parameter 27 Annexure B Document to be submitted along with the bid 38 Annexure- C List of Outputs 39 GETCO/E/TS SOL 056/R0 DT.

2 28/03/2008 TECHNICAL SPECIFICATIONS FOR SURVEY GETCO/E/TS SOL 056/R0 DT. 28/03/2008 General information:- The TECHNICAL SPECIFICATION covers detailed SURVEY including route alignment, Tower spotting, contouring ,BOQ and trial pit etc. Scope of work : The scope of work interalia shall include the following : a) Route alignment using GPS and SURVEY of India Maps, interalia including :- i) Identification of three alternative route alignments & selection of optimized route alignment. This shall be done using GPS and SURVEY of India Maps. The output shall be in the form of digitized route alignment drawing with latest topographical and other details / features upto 8 kms on both sides of selected route alignment.

3 Ii) Digital terrain modeling along the selected route using contour data from topographical maps. iii) 1. 400/220/132/66KV LINES SURVEY & Route alignment The SURVEY & route alignment is to be carried out with walkover SURVEY and the preliminary route shall be submitted to corporate office for verification in presence of field engineer. The suggestions given and proposed diversion etc shall be than checked jointly at site and the corrections shall be incorporated and final SURVEY report shall be submitted to corporate office through field after due certification by field office 2. 66KV D/C Transmission line on Tower- SURVEY & Route alignment and profiling The SURVEY & route alignment is to be carried out and the preliminary route shall be shown to concern field engineer.

4 The suggestions given and proposed diversion etc shall be than checked jointly at site and the corrections shall be incorporated and final SURVEY report shall be submitted to concern field office. The profiles shall be submitted to field office for approval. 3. 66KV S/C Transmission line on H frame structure - SURVEY & Route Alignment. The SURVEY & route alignment is to be carried out and the preliminary route shall be shown to concern field office. The suggestions given and proposed diversion etc shall be than checked jointly at site and the corrections shall be incorporated and final SURVEY report shall be submitted to concern field field office for verification and implementation. iv) The report shall be submitted in 06(Six) copies v).

5 Any extra copy shall be charged as per rate quoted for extra copy in price bid . b) Detailed SURVEY using GPS, Total work stations,with modern techniques, interalia including : i) Computer aided tower spotting & optimization ii) Digitized contouring at undulated / hilly tower locations. iii) Trial pit of Size- 1 Meter x 1 Meter x 3 Meter at every 2 Km or as per the instruction of engineer In charge and measurement of records of soil strata and submission of the same with proposed type of foundation and back filling. c) Soil Investigation at special locations such as river crossing and creek areas d) Preparation of SURVEY reports including estimation of Bill of Quantities tower foundation and line material, identification and explanation of route constraints, infrastructure details available enroute and profiling(66Kv D/C tower lines only)etc.

6 The owner reserves the right to split the total work and award the work for different transmission lines mentioned above to more than one bidder without any change in terms & conditions as applicable for the complete work. GETCO/E/TS SOL 056/R0 DT. 28/03/2008 The Provisional quantities for the scope of work are indicated in relevant Part- III. The final quantities for route alignment & detailed SURVEY (quantities in kms unit) shall be the route length along the approved route alignment. For contouring at undulated / hilly tower locations and soil investigations (quantities in locations unit), the actual quantities to be executed shall be decided by Site Engineer-in-charge.

7 The route alignment, detailed SURVEY , tower spotting, contouring, soil investigation etc. shall be carried out by the Contractor as per the TECHNICAL specifications stipulated here in. The contractor must note that the Owner shall not be responsible for loss or damage to properties, trees etc due to contractor s work during SURVEY . The contractor shall indemnity the Owner for any loss or damage to properties, trees etc during the SURVEY work. The contractor should note Owner will not furnish the topographical maps prepared by SURVEY of India but will make available assistance that may be required in obtaining these by providing letters of recommendation to the concerned authorities.

8 The work shall be carried out by the contractor using modern surveying techniques. The bidder shall indicate in his offer, the detailed description of the procedure to be deployed. The details of the equipment & facilities including softwares for image processing, computer aided tower spotting etc. available with the bidder or his associates shall also be furnished with the bid. The contractor shall also engage services of a reputed geo- TECHNICAL consultant or experts from independent educational / research institutions for examining stability aspects of the selected transmission line route / locations in hilly terrain and ualacreble wherever required. After carrying out the detailed SURVEY and soil investigations if required, the contractor shall submit documents as per Annexure- B.

9 Location details TECHNICAL deviation whatsoever to certain conditions of the bidding documents permitted by the Owner and therefore, the Bidders are advised that while making Bid Proposals and quoting prices these conditions may appropriately be taken into consideration. The Bidder shall complete all the schedules & annexure in the Bid Proposal Sheets, TECHNICAL Data Sheets and specified elsewhere. This SPECIFICATION covers the detailing, of SURVEY of 400/220/132/66 KV Transmission line and handing over to GETCO including a complete Data above transmission lines are in the State of Gujarat. Route Alignment : Route alignment shall be done using GPS and SURVEY of India topographical maps (scale 1:50,000).

10 In case the required SURVEY of India, maps are available in digitized form from SURVEY of India, the same shall be procured and used by the Contractor. The contractor shall identify & examine three alternative route alignments and suggest to the Owner the optimal route alignment between the terminal points. Requirement of Transmission Line Routing The alignment of the transmission line shall be most economical from the point of view of construction and maintenance. Routing of transmission line through protected / reserved forest area should be avoided. In case it is not possible to avoid the forests or areas having large trees completely, then keeping in view of the overall economy, the route should be aligned in such a way that cutting of trees is minimum.