ABSTRACT
EARTH RETENTION AND STABILIZATION The prices following have been assembled from the relevant items in the unit costs section. They are intended to give a broad overall price or help in comparisons between a number of basic construction procedures. These approximate estimates are for construction only. They do not include for preliminaries, design/supervisioncosts, land purchase or OH&P etc. Prices in this section are based on the same information and outputs as used in the unit costs section. Costs per m² or m³ of completed structure. Reinforced in situ concrete retaining wall (including excavation; reinforcement; formwork; expansion joints; granular backfill and 100mm land drain; profiled formwork finish to one side typical retaining wall, allowing for profiling finishes)
1.0m high m² 480.00 to 550.00 3.0m high m² 420.00 to 485.00 6.0m high m² 510.00 to 580.00 9.0m high m² 570.00 to 650.00
Precast concrete block, earth retaining wall (including granular fill; earth anchors and proprietary units or concrete panels, strips, fixings and accessories (Reinforced Earth))
1.5m high m² 360.00 to 410.00 3.0m high m² 330.00 to 380.00 6.0m high m² 360.00 to 410.00
Precast, reinforced concrete unit retaining wall (in situ foundation) (including excavation and fill; reinforced concrete foundation; precast concrete units, joints)
1.0m high m² 440.00 to 500.00 2.0m high m² 445.00 to 510.00 3.0m high m² 460.00 to 530.00
Precast concrete crib wall (including excavation; stabilization and foundation work)
up to 1.0m high m² 290.00 to 330.00 up to 1.5m high m² 280.00 to 320.00 up to 2.5m high m² 280.00 to 320.00 up to 4.0m high m² 260.00 to 300.00
Timber crib walling up to 1.5m high m² 140.00 to 160.00 up to 3.7m high m² 175.00 to 200.00 up to 5.9m high m² 220.00 to 250.00 up to 7.4m high m² 250.00 to 290.00
Rock gabions including preparation; excluding anchoring
1.0m thick m2 80.00 to 90.00
BRIDGEWORK
The following prices are based on recovered data and information from approximately 50 separate structures completed as part of actual projects. Prices include for the works described to the bridge decks and abutments, but exclude any approach works.
