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	Communications Self-support Tower Restructure

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After analyzing this 382-foot communications self-support tower and finding that components were reaching maximum design loads, we undertook a project to restructure the tower, which included the use of temporary bracing for complete removal and the replacement of bracing. Custom-made redundant bracing was also added.

First, a custom-designed temporary brace system was engineered to allow component removal. A rigging plan was composed to accommodate the removal of key bracing, and to serve as a means of lifting personnel to otherwise inaccessible locations on each of the three faces of the tower. A man-rated hoist and trolley line were used in this process, and all hardware and steel components were removed and replaced. The project took 7 weeks from start to finish.

Specifications

Capabilities Applied/Processes		A custom designed temporary brace system was engineered to provide for component removal. A rigging plan was necessary to accommodate the removal of the key bracing along with lifting personnel to inaccessible locations.

Equipment Used on the Tower		Man-Rated Hoist & Trolley Line

Overall Tower Size		382’ self-support tower

Construction Methods		The tower was rigged several times to access the three faces of the tower. The tower was fitted with custom temporary bracing to accommodate removal and replacement of bracing. All hardware and steel components removed were replaced with new.

Logistics		All materials and tools were delivered to the customer on site by United States Tower Services.

Materials Worked With		Engineered Structural Steel and Hardware

Industry for Use		Government

Restructuring Location		Pennsylvania

Standards Met		Tower Analyzed according to ANSI/TIA-222-G

Completion Time		7 weeks

Tower Type		Self-support HF antenna tower

MORE IMAGES


	· New Bracing

	· New Clamp

	· Overall View

	· Detail View

	· New Antenna Mounts

	· New Lighting

Communications Self-support Tower Restructure

Capabilities Applied/Processes

Equipment Used on the Tower

Overall Tower Size

Construction Methods

Logistics

Materials Worked With

Industry for Use

Restructuring Location

Standards Met

Completion Time

Tower Type