Base Tower Contracting Est. Riyadh Malaz-Siteen Street. K.S.A 

     Ph:2921720        Fax: 2921710


***The Company...

Base Tower Contracting is a locally owned and operated company serving the Saudi Arabia. BTC provides electrical, general and technical contracting for the telecommunications industry.

Base Tower Contracting was founded by Abdullah Al-Otaibi to provide clients with the unique electrical expertise needed for telecommunications providers. We have since expanded to provide technical, tower, site and construction services to clients in cellular, PCS, and GSM industries.

If you would like to learn more about BTC and how we can provide a turnkey solution to your unique needs, please contact us.

Civils major work activities and interfaces with other project elements wind loading on aerials, dishes, radars, floodlights and cameras. Line of Sight (LOS) is an important parameter in GSM network planning and this will be established during the initial evaluation. During the Site Identification and Acquisition stage, BTC utilize the team approach, benefiting from the professional services of surveyors, engineers and the RF designers to ensure easy acquisition and suitability for building and construction. This coordination by maximizing local knowledge, ensures faster deployment made seamless through the integrated process.

Site Mapping

BTC site mapping service involves the production of plans which are referenced using the Global Positioning System (GPS). The site plans last the lifecycle of the site, for which the structural and electrical design is based. Additionally these site plans are the basis of construction plans and the ‘as-built’ plans. The service also delivers a detailed report of a selected site after a full analysis of requirements including local and environmental conditions. The report includes drawings, photographs and video where appropriate and proposes how the site can best accommodate the planned equipment. Suggestions of recommended changes to the site are made to ensure optimal configuration and performance.

Civil Engineering                                     Back to Top     

Structural Design

BTC provides specialist professional/technical advice and support for the design of masts and towers and other wind sensitive structures. This covers three main types of site - existing towers, Greenfield and Rooftop. In the initial assessment, technical inspections of structures are made within the constructural parameters required. Further analysis can be provided using 3D models with dedicated software to determine forces and stresses, ensuring structural integrity. The design check includes an assessment of additional equipment that is needed for installation, for example specialist head frames for buildings and rooftops, and recommend any requisite strengthening work to satisfy the proposed loading. The design of any new structures can be carried out according to your requirements. For Greenfield sites geotechnical studies are undertaken. Throughout this process, activities will be managed to co-ordinate the feasibility, planning, design and construction of networked towers as well as providing on-site supervision of contracts. Cabin design is commensurate with individual needs and integrated within the overall design plan.

Mechanical and Electrical Design

This service covers the design of electrical layout, power, all cabling, lightning protection and earthing systems. If necessary, prospective communications sites will be surveyed and quotations will be obtained from regional electricity companies for connection of new supplies, resolving any remote supply problems. When existing sites are used, ancillary equipment will be appraised to ensure compatibility with new equipment proposed. This could include fire alarm systems, land lines and specific lightning protection systems. Environmental issues are also considered and should air conditioning be a requisite, the necessary plant will be procured. This phase of the project will result in the preparation of detailed construction drawings.

Civil Works and Construction Management

BTC employs professionally qualified Surveying and Engineering staff to manage and coordinate all site operations with a full understanding of the design requirements. Depending on whether the chosen site is a ‘green field’ or part of an existing building such as a roof top, appropriate structures will be built. The extent of the works may include reinforced concrete tower and cabin bases, compound clearance and storing, site fencing, cabin fixing, rooftop fixings and steelwork, power supply and coordination, electrical connections and earthing and cable tray installations. Towers are sometimes required for mounting the RF and microwave antennas and could range from roof mounted stubs to ground based lattice towers. Size will be dependant on the surrounding terrain and also issues such as the spacing of the antennas for spatial diversity, the number of antennas and the prevailing weather conditions, especially wind levels. Masts and towers will be deployed to minimize impact on their surroundings, ensuring environmental acceptance and aesthetic design. All work on site will be controlled and co-ordinated by the construction team with input from the design team to ensure the design intent is maintained. Quality checks will ensure specifications are upheld and local Building Regulations approval is attained. All procedures and working methods have been streamlined to improve the services delivered, minimizing the delivery time whilst maintaining quality. On  completion of any construction work each site will be visited to ensure that the work has been carried out as specified and that the quality of the installation meets your requirements.

A Solid Base to Build On                             Back to Top

From preparation and engineering to implementation, verification and integration, Base Tower Contracting Est. can deliver full service networks including full turnkey delivery for new network operators. Professional Services provides capabilities in all disciplines of a network construction project offering numerous benefits: l A single contact for a complete solution for complex network needs. l Easier budgeting with all costs known at the planning stage. l Project tracking and monitoring to manage contingencies and minimise risk. BTC recognizes the importance of a rapid and co-ordinated delivery of new network capabilities, enabling you to gain early return on your network investment. BTC ’s Professional Services can expedite all site related processes, providing added value to get you off to a good start. We will do the groundwork to leave you free to concentrate on what is important to your business – your serving network and growing customer base.

1. ANTENNAS

Antennas used for the transmission and reception of electromagnetic radiation are essential for the air interface of cellular networks. Key antennas types for cellular network applications are directional, with typical horizontal beam-widths of 65 and 90 degrees and omni-directional, which will radiate equally in all directions in the horizontal. Increasingly important for minimizing antenna configurations in diversity applications are dual slant polarized sector antennas which can accept two transmit/receive feeds. The market for dual band (GSM 900 and 1800) antennas is becoming more and more evident and Base Tower is continually installing new products.

2. POWER

An external power plant is required when the customer wants to use DC network equipment but has only mains DC available. The plant will, for example, take a 220V AC input and deliver DC power at 48V potential, if required by network equipment. The power supply system consists of a power supply cabinet and a battery cabinet/additional battery rack. The system power is backed up by battery and during normal operation the power for the network equipment is taken from the mains and the batteries will be continuously charged (trickle charge operation). In the event of mains failure, the power will be taken from the connected backup battery. The system also incorporates breakered distribution and controller/alarms incorporating mains or phase failure, battery deep discharge and rectifier failure detection.

3. CABLES                                                                                                             Back to Top

Various types of cables are required for services and interconnections within the network, these fall into four main categories: i. Power cables for supply of AC and DC power to all network elements ii. Grounding/Common cables iii. RF cables for feeders and jumpers iv. Data cables for various interconnections. Coaxial and 120 Ohm 2Mbit cable for Abis and M interfaces, 64kbit cable for external alarms, RS232 and X.21 and V.35 cables for OMC integration

4. CONTAINERS

A container or shelter is necessary to protect the network equipment and ancillary equipment as well as facilitate a controlled environment with an air conditioning unit. Other equipment and facilities typically housed in the container includes alarm control panels, tower lighting control, transmission equipment and power plant. BTC only ship containers where it is appropriate to do so, ensuring that they are fit for the environment in which the equipment is to be deployed, taking into account earthquakes, hurricanes etc.

5. REPEATERS

In cellular systems, repeaters can be used to enhance the influence of a base station in regions where, due to topological conditions, poor field strengths impair communication. Typical examples are tunnels, subways, shopping malls, valleys and mountainous regions. In these instances, repeaters provide a low-cost flexible alternative to base station deployment. In addition, repeaters can often provide a low cost solution in low traffic areas.

ANCILLARY EQUIPMENT

As part of an overall project deployment, and an important consideration during the construction phase, the supply of what may be termed ‘ancillary equipment’ fulfils the requirement for a turnkey solution. Base Tower is served by a number of global, best in class, preferred suppliers of ancillary equipment and by taking into account the local and environmental conditions, we can ensure that the best materials and most appropriate products are used.

 

                                                                                                &nbs