Telecommunication

4 legged angular self supporting towers are generally constructed with various sizes of angles for heights ranging from 150 feet to 350 feet. The structures are engineered and fabricated to accommodate heavy duty loading imposed from the attachment of microwave dishes and mounting of sector antennas. Besides, the towers are formulated to house a variety of accessories which include platforms, antenna arm mounts, lighting system mounts, monkey ladder, safety cage, cable ladder, utility mounted poles, etc.


Design criteria
A) designed to withstand wind speed of 120km/h.
B) under the designed wind load, lateral sway at the top of tower is less than 0.5 degree.

Materials and workmanship
All design, materials and workmanship strictly performed in accordance to:
A) bs 5950: Welding terms and symbols
B) bs 729: Hot - dip galvanized 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: Wieldable 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

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