Poles and Mounting Structures
The pole is designed in hard-wearing structure for meeting national and international design needs and criteria.
The wind load effects are analyzed with different wind velocities from 33 to 70 mps and 1.3 gust factor. Owing to different wind effects, drag coefficients and height correction factors, they are ideal to be used. The dead load effects are decided by using final deflected position analysis for secondary moments. These combined loading effects are used for determining the maximum allowed loading capabilities that include proper safety factor that is based on the internationally Recognized standard.
Every pole shaft is designed using durable single steel sheet into a tubular shape along with longitudinal welds without any circumferential welded splices. This tubular shape comes with a cross section that is either round, multi-sided, or square shaped with tapered or non-tapered length.
Multi-sided cross-sections never use a bend radius of minimum than 1â and cross-section with less than 08 sides.
The material used in the development of pole sections fulfill the demands of BSEN 10025 Grade 355 Poles that exceed 13Mtrs in length. These two piece assemblies are linked together by telescoping the upper âfemaleâ section over the lower âmaleâ section with 1 .5 times minimum lap distance. The longitudinally welded seam is welded both inside and out for ensuring 100% weld penetration at the telescoped area.
Pole assemblies that exceed 16 mtrs in height are precisely designed with an internal cable guide along with strain relief mechanism that is attached at the mid-height of the pole assembly. The cable guide assembly includes a steel pipe sleeve having internal PVC sheathing and offset bar for reducing wear.
All hinged poles are well-equipped with an external hinge assembly for lowering the top of the pole for repairing purposes. The external hinge assembly has a durable stainless steel pin.
Base plates are widely used for developing the anchor base type pole assemblies. They are welded to the bottom pole section using either a telescopic weld or a full penetration. All bolt holes are carefully and circumferentially slotted for enabling +- 2.5 degrees rotation for adjusting the field.
All standard anchor bolts are designed for meeting the ASTM standards with threaded length of 6 inches and galvanization of minimum of 12â. Anchor bolt is provided with 2 hex nuts and flat washers. These standard anchor bolts are provided with a hooked end on the embedded part to aid in the production of pull out strength.
All service platforms are designed using either tubing or angle material that adheres to the international standards.
Top mounted platforms are mechanically attached to the pole having plates to fulfill the site requirements. The connecting hardware is designed using durable SS Side mounted platform that is mechanically fastened to the pole having plates. In addition to this, U-bolts are developed using round stock to carry minimum of 3 people. The platform floor includes expanded metal grating and a hinged door for easy and swift access to the platform. The hinged door is capable of closing before unlatching any safety climbing device.
All cross arms are designed from tubing materials. Top Mounted cross arms are mechanically attached to the pole having plates and connecting hardware also meets the site requirements.
Side mounted platform is mechanically fastened to the pole using durable plates and U-bolts are developed from round stock.
All hand holes are reinforced with flat bar that are welded to the plate shaft. Each pole has a reinforced hand hole that is positioned in a âSAFEâ place. Cover plates are developed with all hand holes and attached to the pole using a durable back brand screw.
All Pole Shaft Sections are either powder coated or galvanized or a combination. Stub base sections are properly galvanized according to the needs of BSEN 1461. Each shaft assembly is properly coated both inside and outside with only a single dip. Double dipping is not permitted.
Powder coated poles are carefully covered with a urethane polyester powder for meeting the different requirements of the project specifications. It is cured in a convection oven at the temperature of 400 degrees fahrenheit.
All Welding work is carried-out by certified welders.
All the sports towers are Wind Tunnel Tested according to the different requirements.