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Shaft Cover and Landing SlabsP53Shaft Cover and Landing SlabsReinforced Shaft Cover and Landing Slabs are an integral part of FP McCann’s shafts and tunnels product range,manufactured at the Company’s specialist precast concrete facility in Cadeby.Both cover and landing slabs are cast to design specifications and made to order for ‘just in time’ delivery. On site, theslabs can be quickly installed and provide an integral secure shaft cover or internal landing.SizesCover and Landing slabs are generally circular to match the McCann range of smoothbore shaft segments and othersegmental linings. They are available in 1, 2, 3 and 4+ sections. The standard size range is highlighted below. A bespokedesign facility is available for non-standard shapes and sizes.Standard Slab DimensionsShaft internaldiameter (mm)Shaft externaldiameter (mm)One piece Cover SlabsSlabthickness (mm)Total slabweight (T)2100 2350 250 2.822400 2680 275 4.032700 3000 275 5.053000 3360 300 6.923660 4060 325 10.94Shaft internaldiameter (mm)Shaft externaldiameter (mm)Two piece Cover SlabsSlabthickness (mm)Total slabweight (T)3000 3360 300 6.923660 4060 325 10.944000 4400 350 13.844500 4900 375 18.395000 5400 400 23.82Shaft internaldiameter (mm)Shaft externaldiameter (mm)Three piece Cover SlabsSlabthickness (mm)Total slabweight (T)5000 5400 400 23.825500 5900 425 30.21Shaft internaldiameter (mm)Shaft externaldiameter (mm)Four + piece Cover SlabsSlabthickness (mm)Total slabweight (T)5500 5900 425 30.216000 6450 450 38.236500 6950 475 46.857500 7950 525 67.768000 8500 550 81.159000 9500 600 110.5810500 11100 675 169.8312500 13200 775 275.75Shaft internaldiameter (mm)Cover Slabs with RC BeamsShaft externaldiameter (mm)Slabthickness (mm)Number ofRC beams8000 8500 250 29000 9500 250 210500 11100 275 212500 13200 350 to 250 2, 3 or 415000 15700 400 to 300 2, 3 or 4Shaft internaldiameter (mm)Cover Slabs with RC Beam or Pre-stressed BeamsShaft externaldiameter (mm)Slabthickness (mm)Number ofRC beams20000 20900 Special Special25000 25900 Special SpecialShaft internaldiameter (mm)Slabdiameter (mm)One piece Landing SlabsSlabthickness (mm)Total slabweight (T)2100 2050 175 1.502400 2350 175 1.972700 2650 200 2.873000 2950 200 3.55Shaft internaldiameter (mm)Two piece Landing SlabsSlabdiameter (mm)Slabthickness (mm)Total slabweight (T)3000 2950 200 3.553660 3610 225 5.994000 3950 250 7.974500 4450 275 11.125000 4950 300 15.015500 5450 325 19.716000 5950 350 25.30Shaft internaldiameter (mm)Three + piece Landing SlabsSlabdiameter (mm)Slabthickness (mm)Total slabweight (T)6000 5950 350 25.306500 6450 375 31.867500 7450 425 48.178000 7950 450 58.089000 8950 500 81.7953www.fpmccann.co.ukprecast@fpmccann.co.uk
Shaft Cover and Landing SlabsP54Mix and reinforcementSlab sections are wet cast in fabricated steel moulds and steel cage reinforced. The concrete mix design is to a standardcharacteristic strength of 55N/mm 2 at 28 days. Alternative mixes are available.Design FeaturesDesign and detailing may be undertaken by FP McCann or to the customers design specification. Reinforced concretecover slabs are generally designed to withstand loads in accordance with the recommendations of British Standard5400:Part 2 & BD37/01, generally 30 units of Type HB loading, together with the load assoicated with overburden.Cover slabs can be designed to withstand 45 units of Type HB loading, or loading specific to contract. In non-traffickedareas, the slabs may be designed for notional superimposed loads. Landing slabs are designed to an imposed load of5kN/m2.Lifting and HandlingDepending on lifting requirements on site, FP McCann are able to supply fitted lifting loops or cast in sockets andspherical head lifting anchors.Quality standardsShaft Cover Slabs and Landing Slabs are manufactured in accordancewith FP McCann’s quality management system, BSI accredited to BSEN 9001.Key Features and BenefitsNo formwork or ready mixed concrete requiredSimple jointing systemSpeedy installationBespoke design and casting serviceTechnical advice and support54www.fpmccann.co.ukprecast@fpmccann.co.uk
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Page 10 and 11: DrainageMechanical Concrete Pipe Li
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Page 16 and 17: DrainageEasi-Flex Joint GapsP15Pipe
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Page 20 and 21: FPM Tools AutoCADP19The FPM Auto-CA
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Page 24 and 25: DrainageDN4000 Manhole ChamberP23Th
Page 26 and 27: DrainageDN4000 Delivery, Handling&
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Page 30 and 31: DrainageAdjusting Units & Corbel Sl
Page 32 and 33: DrainageHouse Inspection ChambersP3
Page 34 and 35: DrainageCatchpitP33CatchpitThe catc
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Page 40 and 41: DrainageHandhold & Entry Pole Syste
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Page 44 and 45: Water ManagementStorm Water Managem
Page 46 and 47: Water ManagementEasi-Hydro Separato
Page 48 and 49: Water ManagementEasi-Rain Harvestin
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