Coastal Road Construction - Monopiles-PPT Presentation

PPT Presentation

Pdf Summary

The presentation describes the use of rock-socketed monopiles for Package 1 of Mumbai’s Coastal Road project, including a 3.82 km section extending from Priyadarshini Park to Baroda Palace. Because much of the work lies in a marine or intertidal environment, monopiles were selected as a feasible alternative intended to reduce construction impacts.<br /><br />The sites include sensitive intertidal habitats, including coral patches and benthic organisms. Geological investigations found basalt bedrock at Amarsons Garden and Baroda Palace, and marine clays and sands overlying rock at Haji Ali. Monopiles require less seabed footprint than groups of piles—around 12–15%—and avoid pile caps, cofferdams, and associated excavation. This can reduce construction time and cost, limit environmental disturbance, and simplify inspection and maintenance.<br /><br />Construction involves pitching the liner, positioning drilling equipment, reverse-circulation drilling and flushing, lowering the reinforcement cage, concreting, and testing. Three types of pile tests were carried out: bi-directional vertical static load, lateral load, and dynamic load. The presentation reports that 3% of installed piles were tested and that results were within the designer’s acceptable limits.<br /><br />Overall, monopiles provided a practical, comparatively fast, and environmentally considerate foundation solution for this coastal bridge project.

Keywords

rock-socketed monopiles

Mumbai Coastal Road

marine environment

intertidal habitats

basalt bedrock

environmental impact reduction

reverse-circulation drilling

pile testing

coastal bridge foundation

construction efficiency