Megatro Auto-Stable Telecom Steel Lattice Beam Structure & Tower
This photo refers to our 70M auto stable steel lattice beam structure, which we design and exported to Africa market in year 2015.
Below is the 70M auto stable steel lattice beam structure specification, as follow:
Our Design type:
1. Overall height: 70m
2. Steel Lattice Beam Structure.
2. Angle steel framing
3. Square Section with four triangular faces.
To supply with Accessories:
1. Platform for rest and work
2. Ladders with offset flights equipped with hoops/cradle
3. Railings, protections against the falling of iceon satellite dish.
4. Lightning conducting rod system and the grounding of the mast.
5. Vertical and horizontal path for cabling
6. Aviation LED light with visible mark
7. Power socket on each work platform.
8. Fittings/Fixings for FM & VHF Antennas
9. Support for FH satellite dishes
10. Painting services
Antennas technical specification
The lattice tower will be designed to support from top to bottom the following antennas and satellite dishes
| Antennas to put on this type of Pylon include the following systems : This system is the same for each pylon |
| 08 panel antennas TV UHF |
2 panels by side |
| 08 panel antennas TV UHF |
3 panels by side |
| 08 panel antennas Radio FM |
2 panels by side |
| 06 dishes FH |
Diameter 4.00 m |
| Misalignment |
Of the Antennas is 1° |
Wind speed: > 160 km/h (Operational). Survival wind speed must be more than 200km/m.
Materials:
Lattice structure should be manufactured from steel (high tensile as required) S355 and finished with a hot-dipped galvanized coating in accordance with ISO 14713-1999 or equivalent.
Design Standards: TIA/EIA 222-G, or BS8100, EUROCODE 3 PART 3-1
Fabrication
A) Dimension and tolerance for angle are according to GB/T1591-2008, similar to EN 10056-1/2
B) The welding will be performance in accordance with AWS D1.1 or CWB standard
MEGATRO is a full service engineering company with a global reputation for delivering excellence and innovation in telecommunications systems. Over 10 years of experience and innovation in engineering, designing and building towers has evolved MEGATRO into its current form:
l Full Turn-Key provider including site acquisition, engineering services, manufacturing, field services-DAS, tech services, value added reseller and monitoring, maintenance and network ownership
l Specialize in developing supplying and building wireless and wired networks and in-building telecommunications systems, as well as energy infrastructure
l Single source from Design to System Integration
l Top quality, ISO 9001 registered
A complete selection of towers including self-support, lattice steel tower, monopoles and guyed towers, form custom-designed radar towers to broadcast towers and energy infrastructure. MEGATRO carries a variety of related products including fall protection, transmission lines, antennas, obstruction lights, and accessories, and other products if client need, MEGATRO also tailored product as per client condition.
MEGATRO mainly design all kinds of towers and posts for:
a. Telecoms
b. Power transmission
c. TV and Radio Broadcast
d. Roads and City Development
e. Wind energy solutions
f. Other type steel structures
Our complete selection of towers includes:
a. Self-supporting
b. Monopoles
c. Guyed towers
d. Custom-designed radar towers
e. Broadcast towers
f. Power transmission
MEGATRO also designs and manufactures tower related products including:
a. Fall protection
b. Antenna brackets
c. Other accessories if needed by clients
For this 70M auto stable steel lattice beam structure, Our MEGATRO performs in-house design activities by PLS software or other software. Our Engineering Department is boasting of highly qualified engineering who are conversant with international codes and standards. The work is carried out with extensive use of CAE/CAD via a large of computer network. The computer hardware & drafting software are liked to the CNC workshop equipment for downloading of information thereby eliminating error and saving valuable production time.
After fabrication all poles are delivered to the galvanizing facility to be Hot Dip Galvanized. Poles are processed through the facility by Caustic Cleaning, Pickling, and then Fluxing. These strict procedures insure years of maintenance free towers.
Moreover, we offer cost effective range of development and installation service regarding as an additional installation service. These are further, designed for both government and civil communications and suitable for both far-off and short distance communications. For additional protection, we cover these with protective shield to prevent the radioactive fallouts.
Other information:
Availability size: Based on the customer's requirements.
Material: Chinese material or as per clients requirement
Package: Both parties discuss before delivery
Port of Loading: Qingdao Port
Lead Time: One month or based on the customer's needs
Minimum order: 1 set
Fabrication standard: Chinese Standard or other standard which client accepted
APPLICABLE STANDARD AND CODES
All towers manufactured and design shall be generally in accordance with latest revision of the following standards except where specifically directed otherwise.
General
IEC 60050 (151) International Electro-technical Vocabulary
Part 51 Electrical and Magnetic Devices
IEC 60050 (601) Chapter 601: Generation, transmission and distribution of electricity-General
IEC 60050 (601) Chapter 601: Generation, transmission and distribution of electricity-Operation
IEC 60059 IEC standard current ratings
Chinese Standard
| 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 |
American Standards:
| 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 A307 |
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 |
DIN VDE 0101 - Isokeraunic Level
VDE 0201 - Climatic and environmental conditions
CVDE 0210 - Minimum safety factors under simultaneous working loads
ISO R898 Mechanical Properties of Fasteners
BS EN ISO 1461:1991 - High dip galvanized coatings on fabricated iron and steel articles. Specifications and standards
A) BS 5950: Welding Terms And Symbols
B) BS 729: Hot - Dip Galvanised Coating On Iron And Steel Articles
C) BS 2901: Filler Rods And Wires For Gas Shielded Arc Welding: Part 1 Ferritic Steels
D) BS 3692: ISO Metric Precision Hexagon Bolts, Screws And Nuts
E) BS 4360: Weldable Structural Steel
F ) BS 5135: Metal - Arc Welding Of Carbon And Carbon Manganese Steel
G) BS 5950: Part 1: Code Of Practice For Loading Latticed Tower & Masts
Part 2: Guide To The Background And Use Of Part 1"Code OF Practice For Loading"
Part 3: Strength Assessment of Members
H) DD 133 (1986): Code Of Practice For Loading Latticed Tower & Masts
I) BS 4592 (1987): Part 2: Specification For Expanded Metal Grating Panels
J) BS 4592 (1977): Code Of Practice For Protective Coating Of Iron And Steel Structure Against Corrosion
K) BS 4190: Bracing & Flanged Bolts
L) BS 4190: Rolled Steel sections, Flats & Plates
If any special requirement, we can design and discuss with client.
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