Usage: | Tension Tower, Angle Tower |
---|---|
Conductor Circuit: | Double Circuit |
Certification: | ISO |
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Tower height (mm) | 39000 |
Nominal height (mm) | 14800 |
Top peak distance (mm) | 9000mm |
Body extension | +1.5m, +3m, +4.5m |
Item | Description | Minimum Values | |
1 | Structural Steel (S275/Q235/ST37/A36) | ||
1.1 | Tensile strength | N/mm2 | 410 |
1.2 | Yield point | N/mm2 | 275 |
2 | High Strength Steel (S355/Q355/ST52/ASTM A572 GR50) | ||
2.1 | Tensile strength | N/mm2 | 510 |
2.2 | Yield point | N/mm2 | 355 |
3 | High Strength Steel Bolts (5.6/6.8) | ||
3.1 | Tensile strength | N/mm2 | 500 |
3.2 | Yield point | N/mm2 | 300 |
BS EN 10149 steels for cold | Hot-rolled flats products made of high yield strengths Forming - Part 1: General delivery conditions - Part 2: Delivery conditions for thermo mechanically rolled steels |
NF A 35.503 | Iron and steel - steel for hot dip galvanizing |
BS EN 1461 | Hot dip galvanized coatings on fabricated iron and steel articles Specifications and test methods |
ASCE No. 72 | Design of Steel Transmission Tower Structures |
ASTM A570 | Standard Specification for steel, sheet and strip, carbon, hot-rolled, structural quality |
ASTM A572 | Standard Specification for high-strength low-alloy Columbium -Vanadium structural steel |
ASTM A607 | Standard Specification for high-strength low-alloy Columbium-Vanadium structural steel, or both, hot-rolled and cold-rolled |
ASTM A715 | Standard Specification for steel sheet and strip, high-strength, low-alloy, hot-rolled and steel sheet cold-rolled, high-strength, low-alloy, with improved formability |
ASTM A6 | Standard Specification for general requirements for structural steel bars, plates, shapes and sheet piling |
ASTM A123 | Standard Specification for zinc (hot-dip galvanized) coatings on iron and steel products |
ASTM A385 | Standard practice for providing high-quality zinc coatings (hot-dip) |
ASTM A370 | Methods and Definitions for Mechanical Testing of Steel Products |
ASTM A751 | Methods, Practice and Definitions for Chemical Analysis of Steel Products |
BS EN ISO 1461 | Hot-dip galvanized coatings on iron and steel articles |
IEC 60652 | Loading Tests on Overhead Line Tower |
IEC 60826 | Loading and strength of overhead transmission lines |
1 | Line details - Circuit (DC) & KV. | DC, 230 KV | |||
2 | Number of phases. | 3 | |||
3 | Tower details | Basic- span m |
Wind Span m |
Max. Weight- Span m |
Min. Weight- Span m |
DT4 | |||||
Tension | 120 | 250 | 250 | 75 | |
Angle | 0-15° | ||||
4 | Conductors Type ( ACSR/AAAC/etc) | 795 MCM ACSR/AS "Condor" | |||
Conductor - Single/twin/quad/hexa | 1 per phase | ||||
5 | Earth-wire | 36 steel and optical fiber Al-clad steel wire or Aluminum alloy wire | |||
Number of earth wires | 1 | ||||
6 | Insulators. | 230kv Polymeric post insulator | |||
7 | Factor of safety. | 1.8 | |||
8 | Environmental condition of area (Temp). | Design Ambient Temperature 50 DegC | |||
9 | Tower Height. | as per clients | |||
10 | Design Code | ASCE No. 72; "Design of Steel Transmission Tower Structures. | |||
11 | Type of Soil (Normal / Black cotton) | Salt laden with dust laden |
Type of load | Overload factor | remarks |
1 vertical load(under wind condition) | 1.5 | Applied on cond. I.II& Dead WT. of tower |
2 vertical load(no wind, erection/ Maintenance ) | 2.0 | Applied on cond. III& Dead WT. of tower |
3 transverse loads | 1.3 | Applied on condition I, II and on longitudinal faces of towers |
A due to wind | ||
B due to angular tension in wires | ||
Under wind condition | ||
C wind on towers without wires | 1.0 | |
4 transverse load (no wind, erection /Maintenance) | 2.0 | Applied on condition III |
5 longitudinal (no wind, erection /Maintenance) | 2.0 | Applied on condition III |
6 other longitudinal loads | 1.50 | Applied on condition I and II |
7 uplift load | 1.50 | Applied on condition I and II |
8 uplift load | 2.00 | Applied on condition III |
No | Code | DESCRIPTION |
1 | GB/T2694-2003 | Power Transmission line Steel tower - Technical requirements for manufacturing |
2 | JGJ81-2002 | Technical specification for welding for steel structure of building |
3 | GB9787-88 | Measuring and allowable tolerance for hot-rolled equal angle |
4 | GB709-88 | Measuring and allowable tolerance for hot-rolled plate and strip |
5 | GB/T699-1999 | Quality Carbon Structural Steel |
6 | GB/T1591-1994 | Low alloy high strength structural Steel |
7 | GB700-88 | Carbon Structural Steel |
8 | GB222-84 | Method of sampling steel for determination of chemical composition and permissible variations |
9 | GB/T228-2002 | Method for Tensile testing of metals |
10 | GB/T232-1999 | Method for Bending test of metals |
11 | GB/T5117-1995 | Carbon Welding Rod |
12 | GB/T5118-1995 | Low Alloy Welding Rod |
13 | GB/T8110-1995 | Welding wires for gas shielding arc welding of carbon and low alloy steels |
14 | GB/T10045-2001 | Carbon steel flux cored electrodes for arc welding |
15 | JB/T7949-1999 | Weld outer dimensions for steel construction |
16 | GB50205-2001 | Test Standard for Acceptance of Steel Structure |
17 | GB/T470-1997 | Zinc Ingot |
18 | GB3098.1-2000 | Mechanical properties of fasteners-Part 1:Bolts, screws and studs |
19 | GB3098.2-2000 | Mechanical properties of fasteners-Part2: Nuts, and thread |
20 | GB3098.3-2000 | Mechanical properties of fasteners-Part3: Fastening screw |
21 | GB/T5780-2000 | Helical Bolts Grade C |
22 | GB/T41-2000 | Helical Nuts Grade C |
23 | GB/T90-2002 | Flat Washer Grade C |
24 | GB/T13912-2002 | Metal Coating, Technical Requirement and Test Method for Hot-dip galvanized Metal Parts |
Standard | Description |
ASTM A6/A6M | Standard specification for general requirements for rolled structural steel bars, plates, and sheet piling. |
ASTM - 6 | - General Requirements for delivery of Rolled Steel Plates, Shapes, sheet Piling Bars for structural used |
ASTM A36/A36-M-97a | Standard specification for Carbon structural steel |
ASTM A123 / A123M-02 | Standard specification for Zinc (Hot-Dip Galvanized) Coatings on iron and steel products |
ASTM A143 / A143M-03 | Standard Practise for Safeguarding Against Embitterment of Hot-Dip Galvanized Structural Steel Products and Procedure for Detecting Embitterment |
ASTM A153/ A153M-05 | Standard specification for zinc coating (Hot-Dip) on iron and steel hardware |
ASTM A - 194 | - Grade for bolt |
ASTM A239 | Standard practice for locating the thinnest spot in a zinc (Galvanized) Coating on Iron or Steel Articles |
ASTM A242 | Standard specification for High-Strength Low-Alloy Structural steel |
ASTM A907 | Standard Specification for Carbon Steel Bolts and Studs, 60000 PSI Tensile strength |
ASTM A370-06 | Standard Test Methods and Definitions for Mechanical Testing of Steel Products |
ASTM A325 | Standard Specification for structural bolts, steel, Heat treated 120/105 ksi minimum tensile strength |
ASTM A-325 or A-354 | - Galvanized hexagonal head of connection bolt |
ASTM A325-97 | Standard Specification for High-strength Bolts for structural steel Joints |
ASTM A384 / A384M-02 | Standard Practise for Safeguarding Against Warpage and Distortion During Hot-Dip Galvanizing of Steel Assemblies. |
ASTM A394-93 | Standard Specification for steel Transmission tower, Bolts, Zinc Coated and Bare |
ASTMA - 563 | - Class and size of nuts |
ASTMA - 572 | - Chemical composition of steel |
ASTM A572/A572-97c | Standard specification for High-Strength Low-Alloy Columbium-Vanadium Structural steel |
ASTMA - 615 | - The anchor bolt material |
ASTM A673 / A673M-07 | Standard Specification for Sampling Procedure for Impact Testing of Structural Steel |
ASTM B201 | Standard practice for testing Chromatic coating on Zinc and Cadmium surfaces |
ASTM E94-93 | Standard Guide for Radiographic Testing |
ASTM E 709-95 | Standard Guide for Magnetic Particle Examination |
ASCE Manual 72 | - Load testing a simple structure |
ASCE 10-97 | Standard Design of latticed steel transmission structures |
AWS D1.1 | American Welding Society D1,1/D1,1M structural Welding code- Steel |
ANSI B-182-2 | Bolts, nuts and washers dimensions |