Shaft Cover & Landing Slabs
FP McCann Shaft Cover & Landing Slabs
Reinforced 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 at Cadeby, Warwickshire. Both cover and landing slabs are cast to design specifications and made to order for 'just in time' delivery. On site, the slabs can be quickly installed and provide an integral secure shaft cover or internal landing.
Cover and Landing slabs are generally circular to match the McCann range of smoothbore shaft segments and other segmental linings. They are available in 1, 2, 3 and 4+ sections. The standard size range is highlighted below. A bespoke design facility is available for non-standard shapes and sizes.
Mix and reinforcement
Slab sections are wet cast in fabricated steel moulds and steel cage reinforced. The concrete mix design is to a standard characteristic strength of 50N/mm2 at 28 days in accordance with BS1881. Alternative mixes are available.
Slabs are designed to resist forces in line with the recommendations of BS 8110: Part 1 (Fill) and super imposed loading (BS 6399). Where highway trafficking is specified, BD37/88 is referenced. Design and detailing may be undertaken by FP McCann or to the customers design specification. Reinforced cover slabs are designed to carry 30 units of HB and landing slabs an imposed load of 5kN/m2. Shaft cover slabs can accommodate up to a maximum of 4.0 metres depth of fill.
Lifting and Handling:
Depending on lifting requirements on site FP McCann are able to supply fitted lifting loops or cast in sockets and spherical head lifting anchors.
Shaft Cover Slabs and Landing Slabs are cast in accordance with FP McCann's quality system under BS EN 9001: 1994. The manufacturing unit at Cadeby is BS EN ISO 9001: 2008 accredited.
Shaft Cover Key Features and Benefits:
•No formwork or ready mixed concrete required
•Simple jointing system
•Bespoke design and casting service
•Technical advice and support
Standard Slab Dimensions: