Quotation are invited for Construction of Timber Footbridge at Glenmore Msibi Mtshali Section Ward 11 PRELIMINARIES AND GENERAL Bridge foundations Foundations before commencing with the timber part of the construction The bearer poles must be treated poles as it will be the closest timber to the water and constant moisture. Site Establishment Contractual requirements (PPE, etc.) EXCAVATIONS, CONCRETE ETC. Open face excavation in earth To embankment behind retaining blocks including trimming to slope Excavation in earth not exceeding 2m deep Trenches m³ 12 2 Holes Risk of collapse of excavations m³ 3 3 Stabilize sides of trench and hole excavations not exceeding 1,5m deep PRECAST CONCRETE COPINGS ETC Item 1 4 Reinforced concrete finished smooth on exposed surfaces including bedding, jointing and pointing 20MPa 100mm thick reinforced concrete in bottoms and sides of retaining walls and floors m³ 1.2 5 Finishing bottoms of channels smooth with a steel trowel to fall m² 8 GABIONS AND INTERLOCKING BLOCK RETAINING STRUCTURES Gabions Gabions are to be of double twisted hexagonal wire mesh (nominal 80 x 100mm mesh of 2,7mm galvanised wire, with 3,5mm galvanised wire framing and with partitions at 1m centres). All wire to be hot-dip galvanised to SANS 675 Gabions of galvanised wire boxes laced together and filled with broken stone 500mm Thick retaining wall of 3 x 2 x 0,5m boxes properly m³ 6 bonded 2 300mm Thick embankment protection of 3 x 3 x 0,3m m³ 5 mattresses with diaphragm divisions at 1m centres, butt jointed 3 Retaining structure with stepped or shape to face and curves as m³ 8 required to suit slopes. 4 Interlocking planter blocks laid with horizontal bed joints to surtain m³ 12 degree slope, including average 100mm thick compacted earth filling behind blocks and filling blocks with hard soil lightly tamped as the work proceeds Tender Link : https://www.safcol.co.za/opportunities/procurement-opportunities/
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