Shoring and Retention SystemsDevelopment or planning constraints commonly drive the construction of basements as part of the preferred development solution. If correctly planned and designed, basement systems can be very economical, however if the in-ground works are not designed, detailed and documented correctly, it can have detrimental effects on the project budget and construction programme.
Robert Bird Group’s solutions have included temporarily and permanently anchored, internally strutted and braced, top down and hit-and-miss constructed wall systems carefully planned to blend in with the construction programme and site conditions.
Robert Bird Group has developed a proven capability to tailor appropriately buildable and cost efficient retention systems, including:
- Basements constructed in loose sands prone to movement or settlement during excavations, such as The Peninsula - Manly, Sydney.
- Basements constructed using top down construction in London clay prone to significant movement during and after construction such as rora T5 Sofitel at Heathrow Airport London - UK.
- Deep excavations in highly built-up environments in variable unstable strata e.g. Regency at Chatswood, and Eclipse at Bondi - Sydney.
- Deep excavations in silty sands, or sedimentary deposits adjacent to roads and utilities using topdown techniques e.g. City Tower and Kota Kasablanka - Jakarta, and Westin and Universal Hotels - Kuala Lumpur, Channel Tunnel Rail Link at Kings Cross / St Pancras - UK.
- Excavation adjacent to existing structures requiring underpinning and undercutting
- Excavations over and around movement sensitive rail and traffic tunnels e.g. Metway Centre - Brisbane, and the Eclipse at Bondi – Sydney.
- Structures adjacent to heritage and movement-sensitive buildings e.g. Casino Towers - Brisbane, constructed adjacent to a heritage-listed church.
- Waterfront and marine structures e.g. Admiralty Towers - Brisbane, and King Street Wharf -Sydney.