The Interspan team has extensive experience in the supply and installation of the post-tensioning works in Bridges.
The benefits of post-tension concrete in the design of a bridge include the following:
Multi-strand stressing is the most common approach of applying the stress to bridge structures. Typically manoeuvred by crane, the multistrand jacking applies uniform stress to the separate strands of the tendon simultaneously. Forces applied to tendons by the multistrand jacks can be in excess of 400 tonnes based on strand configurations.
The application of post-tension in the design of a bridge can offer savings in terms of project materials. Reductions in concrete volumes can be achieved with lower levels of reinforcement due to the compressive force is increasing the section tensile capacity. Material savings can also mean a reduction in the amount of labour which leads to simpler and faster executions.
The Interspan team has extensive experience in the design, supply and installation of the post-tensioning works in Tanks.
The application of post-tension tendons is common in tanks given the durability requirements. Post-tension tendons apply compressive stress to the concrete, which increased resistance to cracking once the tank is filled.
Tanks may have tendons in one (horizontal) or two directions (vertical and horizontal), with the most common approaches being the use of Internal bonded tendons.
The Interspan team have been involved in the design and execution tanks with and without buttress stressing access, as well as both bonded and unbonded tendons.
The application of post-tension to tank structures can offer savings in terms of material savings and construction time.
The Interspan team has extensive experience in the design, supply and installation of all tensioned bar types.
Bar tendons and stressing are mainly used in temporary works solutions, and repair and strengthening operations.
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