Green Field Towers
Types of Green field Towers
NB Telecom Towers
One of the new types of masts are self-standing ground masts, which are widely used in the telecommunication network due to the occupation of very little space, the rule of three or four legs and the use of open (corner) sections.
Technical Specifications These types of masts are three- or four-sided, all-cornered with non-welded connection (lattice), which are designed at different heights (from 24 to 54 meters) and with different wind surfaces and wind speeds, and even with elements Standard steel is produced.
The pyramidal slope of this type of masts is a maximum of one degree and in the upper section (the last six meters) the masts slope becomes zero.
The maximum width of the base of this type of masts (in the 36-meter type) is 1.8 meters and the minimum width of the upper base in all types of NB masts is one meter. The absence of welding elements, a significant reduction in warping and deviation of elements, ease of moving parts, ease and speed in installing the mast, and ease of loading transmission elements on the face of the mast are among the special features of these types of masts.
ICB Telecom Towers
Towers with prefabricated foundations, nicknamed ICB, refer to three or four-sided self-standing towers that are installed on prefabricated foundations. For the foundation of these towers, pre-made flat concrete parts are used, which are assembled and connected at the unloading site The metal structure of prefabricated ground self-standing towers (ICB) is designed in two types:
Prefabricated metal structures that are prepared in six-meter Sections with a Solidrund profile and are installed on the foundation using a crane.
Lattice metal structures that are designed and styled to be installed on Precast foundations and like other Lattice towers are woven and erected on site.
So far, two types of RDS (three-sided) and NB (four-sided) corner Towers have been designed for this method. This tower execution method has valuable advantages such as occupying very little space, eliminating the foundation execution time, removing the equipment foundation and fence, and very fast installation (within a few hours), which has made it widely used in telecommunication networks. Tower Specification These types of towers are designed and produced in different wind surfaces and wind speeds.
The pyramidal slope of these types of towers is a maximum of one degree and the mentioned slope can extend to the end section of the tower. The minimum number of Precast foundation layers for the lightest type of these towers is 4 layers with a thickness of thirty centimeters. Eliminating the time of reinforcement and fixing the foundation, significantly reducing the small parts of the tower, reducing the deviation of the beams, and the high speed of erection are among the special features of this type of towers.
WB Telecom Towers
Ground self-standing towers of road design, to all types of three- or four-sided self-standing towers (Wide Base Lattice) means that there is enough space for installing the equipment under them, the provision of a suitable fence and roof along with the tower, the possibility of access and falling of the equipment on the equipment is limited WB Towers Specifications:
These types of towers are three- or four-sided full-angle with non-welded connection (lattice) that can be designed at different heights (from 54 to 120 meters) and different wind surfaces and wind speeds, and even with elements Standard steel ones are produced. The pyramidal slope of these types of towers is a maximum of one degree and in the upper section (the last six meters) the tower tilt becomes zero.
The maximum width of the base of these towers (in the 54-meter type) is 5 meters and the minimum width of the upper base in all types of road towers is one meter.
Absence of welding elements, significant reduction of warping and deviation of elements, ease of moving parts, ease and speed of rig installation are among the special features of this type of Towers. The design of the tower is such that the equipment is installed under the tower.
The free space that can be used under the tower should be for installing a telecommunication connection device (minimum dimensions 3x3x3m).
This space must be completely enclosed and secured and impenetrable.
QENB Telecom Towers
Ultra-slim self-standing towers are referred to as towers that have 3 or 4 legs or more, and the legs are connected with bracing members, and no restraints or handles are used for its stability. They are used for installing microwave antennas, mobile antennas, surveillance and wireless cameras.
The foundation of these towers must be implemented as a buried section and it has the ability to install the foundation and tower in less than six hours.
- The maximum distance of bases for towers with different heights are as follows:
- For towers with a height of 42 meters, it should be at most 1.6 meters.
- For towers with a height of 36 meters, it should be at most 1.5 meters.
- For towers with a height of 30 meters, it should be at most 1.4 meters.
- Note: The values mentioned for the width of the bases can be ±300 meters different.
QENB Towers Domain of Usage
These types of towers are suitable for areas that have limited space due to municipal requirements or the possibility of hindering implementation due to their narrower cross-section than NB self-standing towers and also the ability to quickly install them in QENB towers.
he use of QENB Towers is allowed only as an executive solution in special conditions and on a case-by-case basis, taking into account all structural, geotechnical and environmental parameters, and the use of this type of rig in mass volume is not allowed. Otherwise, it is strongly recommended to use ICB towers.
Monopole Telecom Towers
These types of masts are designed and installed in spaces of less than two square meters and with a draft surface of 12 square meters.
Their main body consists of steel sheets, which decreases with the increase in height, diameter and thickness of the body.
The sections are connected by flanges and the length of each section is a maximum of six meters.
The ladder is installed as a parapet or step bolt at the height of the mast, and in some models due to compliance
It will be possible to have a visual view of the city by passing the cables through the tower.
