Bauer is expected to complete trench wall and bored pile work for the skyscrapers on Plots 164, 165 and 166 at KLCC - the Kuala Lumpur City Center - by July 2019. The development comprises a four-storey underground car park, a five-storey shopping centre and an office tower.
The peculiarity of this project is the depth of the piles: out of a total of 225 contracted piles, 137 piles for the office tower have a diameter of 2,500mm and are designed to be manufactured to a depth of between 90m and a maximum depth of 150m can be. "To my knowledge, these are currently the deepest piles ever made in Malaysia," said Egon Stahl, general manager of Bauer Malaysia.
Before commencing the pile work, a soil survey will be carried out at each pile position to determine the beginning of the stable bedrock to determine the final end depth of the pile. "Only then can the actual drilling commence," continued Stahl. In order to reach the depths required for the foundation piles, two more records are needed: a BG 72 - the largest Bauer rotary drilling rig to date - as well as a five-fold Kelly bar with a length of 150m. "The project is, therefore, record-breaking in three respects: Bauer founds the deepest piles so far in Malaysia and with the currently largest Bauer drill rig and the world's longest Kelly bar. A truly unique project," summarised Stahl.
In addition to the extremely deep piles for the tower, 88 piles with a diameter of 2,000mm to a depth of 75m and a diaphragm wall with a thickness of 1,000mm and a depth of 38m are being manufactured for the shopping centre. In addition to the Bauer BG 72, a BG 48 with a 125m long Kelly bar is used in the pile work.