write down the advantage and disadvantage of using drilled pier as a foundation.
v Write down advantage and disadvantage of using drilled pier as a foundation Drilled piers Drilled piers, also known as caissons, are deep foundation systems used to support structures by transferring loads from unstable soil to stable, deeper soil layers. Advantage 1) High load capacity 2) Depth flexibility 3) Minimal vibration 4) Adaptable to site condition 5) Cost effective for large loads 6) Less noise pollution Disadvantage 1) Slow construction 2) Soil collapse risk 3) Difficult quality control 4) Weather dependency 5) Specialized equipment required