Three & Four Legs Telecom Tower

Angle steel communication tower
Angle steel communication tower is a tower that consists of angle steel with the advantages of simple link structure, convenient installation, easy quality control, and solid appearance. Most of the time it covers an area of 50-150 m² and the diameter is 3m-5m.

Three-legged tubular communication tower
Three-legged tubular communication tower is a steel-tube construction tower with the advantages of lighter, lower wind load coefficient, strong wind resistance, have isotropic characteristics. 

Design Software：MS TOWER. ASM TOWER,PLS TOWER,SAP2000 ETC。

Height: 9M-60M

Wind Speed: 0–330KM/H

Design Code: Major standard: TIA/EIA-222-G/F/H, ANSI/TIA‐222‐G & AISC‐LRFD‐99 

Design Loading

1. Antenna load area: both FPA and EPA as per specified by Clients worldwide.

2. Wind speed: Basic design wind speed and operational wind speed (3 second gust) as per requested by the clients.

3. Deflection & Twist Angle: Usually +/- 1° for monopole and  +/- 0.5° for 3 leg/4 leg angular/tubular towers

4. Exposure category: C as default one, or B and D as per requested by clients

5. Topographic category: 1 as default one, or 2, 3 ,4 with crest height (meters) as per specified by clients.

6. Ice Loading: Usually there is no ice in the project area.

Hot-dip galvanization: ISO 1461-2009, ASTM A123

Steel Grade

1. High strength low alloy structural steel: Q420B which is equivalent with ASTM Gr60

2. High strength low alloy structural steels: Q345B which is equivalent with ASTM Gr50 or S355JR

3. Carbon Structural Steel: Q235B which is equivalent with ASTM A36 or S235JR

Bolts and Nuts: Mainly ISO 898 grade 6.8 and 8.8 bolts

Foundation: 50KPa, 100KPa, 150KPa soil bearing capacity mainly.