Precast concrete Wideslab floors are the rapid solution to high quality, economical concrete floor construction where long spans and/or high load bearing capacities are required.
Suspended concrete floors are constructed using prestressed planks supported by either masonry walls or a supporting frame structure in either steel or precast concrete.
Precast concrete floors constructed in ACP’s wide slab plank system is suitable for all floor levels from ground to roof.
Individual precast floor units are manufactured in the long line prestressed system minimizing costs and production time.
Openings for services, pipes and ducting can all be cast into the precast concrete flooring at manufacturing stage rather than cut out on site, ensuring better finish and less down time during construction.
The wet cast system also minimizes camber variations between precast units insuring a uniform suspended concrete floor.
The casting system also enables the manufacture of special width floor planks cast to size rather than cut down from stock as is typical of traditional hollowcore flooring systems.
Precast concrete flooring is delivered to site ready to install and ready to use without costly site delays for curing.
The advantages of the ACP system also include the specialist wideslab lifting system that’s not only safe but also fast and simple eliminating plank damage caused by choke hitch chains. Lifting inserts are cast into the units during production. These lifting points are then used to handle the planks within the factory and once again on site.
The wideslab floor lifting system also eliminates the need to “bar” individual floor beams into final position as is typical of hollowcore floors lifted with chains or beam clamps.
Accurate first time placement means the floor plank is in its final position before the crane unhooks. ACP’s precast concrete wideslab floors are therefore ideally suited to inclusion in modern high U-value construction schemes where supporting walls are built from autoclaved aerated blocks such the Thomas Armstrong Airtec Block System incorporating the latest thin joint technology.
ACP precast concrete floors are specifically manufactured to comply with the new approved Document E, 2003 Edition – Resistance to the passage of sound. The dense concrete slab used in the ACP wideslab system has benefits in acoustic performance over hollowcore flooring.
• Diminished airborne sound paths
• Minimal joints restricts the possibility of sound penetrations
• Reduced sound vibration passage
Precast concrete floors also exhibits excellent and fire resistance properties. The dense nature of the product eliminates possible fire spread through hollow cores.
Wideslab units have a special shear key detail on the long edge. This joint is designed to receive a grout infill without additional shuttering to the soffitt prior to installation of insulation and floor finishes.
Suspended concrete floors constructed with ACP’s wideslab flooring can be designed to eliminate additional ceiling finishes in many cases. A smooth soffit finish to the precast floor is a benefit of the wet cast system and is suitable to receive a direct paint finish.
A sand/cement screed can be applied to the grouted suspended concrete floor to form a robust finished floor or base for ceramic floor finishes.
The precast concrete floor is suitable for underfloor heating systems providing a high thermal mass in addition to the benefits of a concrete floor solution
The suspended floor system offers potential to minimize excavations when used at ground floor level a particular benefit where excavated material must be removed from site.
Precast concrete floor units are also ideal for suspended flooring to subsequent levels, being quickly and safely installed to provide an instant safe platform for following trades.
Prestressed concrete floor beams are manufactured in different depths to suit spans and anticipated floor loads. Standard units are 1200mm wide maximizing transport efficiency and are manufactured as solid sections in 100mm, 150mm and 200mm depths. The 200mm section is also available with a polystyrene core system to reduce unit self weight, increasing safe spans.
Composite flooring built up using a prestressed plank and insitu structural screed to also available. More details are available on the Composite Floor page
To select the right section for your project, please see the Safe Span Table.
ACP Concrete Wideslab floors are manufactured to comply with the requirements of the current Robust Details E-FC-1, E-FC-4 and E-FC-5
ACP prestressed concrete floor slabs are suitable for use in achieving the requirements of Building Regulations part A relating to disproportionate collapse.
Robust details for progressive collapse regulations are easily incorporated into the design of the precast concrete flooring system. ACP offers a number of solutions to suit your site specific requirements.
A full design and build package is available including all on site activities to deliver high quality precast floors.