BLOCK AND BEAM FLOORING

BENEFITS

  • APC Block and Beam Flooring require less preparation and this speeds up construction time.
  • Unlike other systems APC T Beams may be installed even when adverse weather conditions are encountered.
  • Installation is fast and uncomplicated and skilled tradesmen are not usually required.
  • The components of APC T Beams are easily handled, stored and fixed on site.
  • Once installed and brush grouted, APC Block and Beam Flooring provide an immediate working platform.
  • In addition to improved thermal and sound insulation properties, APC Beams are draught proof and not subject to rotting.
  • Ease of installation, reduced preparation and speed of erection provide significant cost benefits to the contractor on site.
  • APC Block and Beam Flooring is available for distribution throughout South and West Wales.
  • Suitable for first floors in housing where separating concrete floor reduces noise transmission between first and ground floors together with masonry traditional blockwork separating rooms.
  • The APC 150mm deep beam is used extensively in housing developments. The system can be used just as effectively at first and subsequent floor levels as at ground floor. Ease of installation is coupled with greatly improved sound and thermal insulation properties as well as enhanced fire protection.
  • Installation is fast and simple, does not require highly specialist skills and can be carried out during adverse weather conditions. When completed and brush grouted, APC Beams provide and immediate working platform for progressing construction of the building. Significant cost benefits can also be gained, due to reduced preparation and speed of installation.
  • A comprehensive and personalised estimating service progresses the initial enquiry thought to a written quotation. Upon receipt of an order and full payment, our technical department with the help of a computer-aided design system provides working drawings and calculations.
  • APC Beams are manufactured to order, however is certain circumstances small orders can be supplied from stock.
  • APC Beams are the quick, simple and economic flooring solution for housing and low-rise buildings.

UPPER FLOORS

  • In many cases the use of APC Block and Beam Flooring can be continued from the ground floor to the first and any subsequent floors. Where APC Beams are used in the first floors and above, care must be taken to ensure that appropriate fire resistance and sound insulation is achieved. This compliance for sound is clearly defined within Approved Document E (1992 Edition) of the Building Regulations 1991.
  • A suspended ceiling can be easily installed using galvanized ceiling clips, which are fixed into position prior to the floor above being grouted. Battens are fixed into the clips and plasterboard fixed to the battens, resulting in increased fire resistance. We can order the ceiling clips if required.
  • The 150mm APC Beams are capable of achieving a half hour fire rating.

PREPARATION

  • The use of APC Beams considerably reduces site preparation and thus only the removal of topsoil and any vegetable matter is required (the solum should be treated to prevent any further growth). No oversite concrete or additional surface seal is necessary. Provision of a void between the underside of the floor and the ground level of at least 75mm (150mm for clay) should be made.
  • APC Beams seldom requires an increase in foundation size. However, if the ground condition is very poor, specialist advice should be sought.
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INSTALLATION

  • The bearings for the beams should be clean, level and free from debris. The mortar in the masonry must be cured and have sufficient strength to support the floor.
  • A continuous damp-proof course should be laid along the support wall below the floor in accordance with CP 102: 1973
  • For masonry construction the beams should have a nominal bearing of 100mm. Where supported by steel, the nominal bearing can be reduced to 75mm. In cavity construction, beams should not project into the cavity.
  • Place floor beams at the centres shown on the drawing, positioning infill blocks between the extreme ends of the beams as work progresses in order to ensure the correct spacing. The beams may require to be staggered when supported on internal walls. Special care should be taken when positioning beams that are to carry load-bearing or non-loadbearing partitions.
  • A whole block can be used to bear on the first beam and the inner leaf of a cavity wall, this can result in an odd spacing within the bay and a row of blocks must be cut to suit. Care should be taken to ensure that the block bears correctly in the beam and that the blocks are abutted to each other as closely as possible. To provide access through the floor for services, blocks may be cut or omitted and where necessary made good with insitu concrete. Split course blocks can be used as makeup blocks along load-bearing walls.

GROUTING

  • A 4:1 cement and sand grout should be well brushed into the floor. Prior to grouting, the floor should be thoroughly cleaned and wetted to ensure an effective seal.

SAFETY

  • Note that, prior to grouting, the floor does not form a safe working platform and where barrow or bogie runs are required, plywood or scaffold boards must span between beams at all times. Throughout construction any loads imposed on the floor, such as those from stored materials etc., should be minimised and in any event, must be short term and not exceed the load for which the floor was designed.

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