TNB Bangsar, KL (Tensar-Keystone Retaining Wall) ElevationCompletionGeogrid Retaining Wall and Reinforced Slope underneath the bridge Before ConstructionTensar-Keystone Retaining WallRip-rap at cascaded drain dischargeRip-rap for scour protectionSite conidtionElevationCompletionGeogrid Retaining Wall and Reinforced Slope underneath the bridge Before ConstructionTensar-Keystone Retaining WallRip-rap at cascaded drain discharge Case Study PDF here