Crosswall Construction
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cornish concrete products Crosswall Construction low carbon fast track buildings / Basements / double walls / crosswall / Thermofloor / Thermowall / Stairs

Introduction PROJECT: Penwith College PRODUCT: Thermowall Panels Looking for green, innovative, efficient building solutions? When considering low carbon buildings, the choice of building fabric is essential in determining the performance of the structure. There are a number of factors which will have a significant effect on performance. // Orientation and siting of the building // Thermal mass // Solar shading // Natural ventilation // Good insulation values // Excellent air tightness // No cold bridging www.cornishconcrete.co.uk CCP Crosswall Construction including Thermowall and...

‘Damping Ratio” ‘Comfort Zone’ This graph illustrates the damping effect that the exposed thermal mass within the fabric of a building has on the external temperature. Thermal mass is the ability of a material to absorb heat. A lot of heat energy is required to change the temperature of a high-density material like concrete. High thermal mass, low conductivity materials, act as thermal sponges, absorbing heat during the summer to cool the building, and store heat from the sun or heaters to release it at night. Why is it important? The thermal capacity of concrete structures can be utilised...

Basements CCP offer a complete design and detailing service through its in-house design team difficult to achieve with an insitu concrete solution. Construction Method Precast basement units are manufactured with CCP’s double wall construction method. Double walls are essentially a precast/insitu concrete hybrid which offer all of the advantages of precast concrete with the robustness that insitu concrete affords under the ground. Units comprise of two concrete leaves; typically 60mm thick connected with steel lattice girders. The product is relatively light as there is a cavity between the...

double walls The illustration shows a typical section through a double wall unit. Advantages of Double Wall Construction: // Considerable savings on main contract programme and preliminary costs such as scaffolding // Factory controlled conditions ensure accuracy and quality // Environmentally friendly - minimal of waste on site // System can be used for modular construction enabling buildings to be erected quickly Common uses for Double Walls // Greatly reduced labour on site // Shear walls // Excellent acoustic characteristics // Staircore and lift shaft walls // Excellent fire...

CCP Crosswall Construction offers excellent Air Tightness as a robust monolithic structure Crosswall Construction CCP Crosswall Construction is a modern, fast and effective method of construction utilising precast concrete components. Fabricated in a state of the art manufacturing facility, (the first of its kind in the UK) they can be designed on a bespoke basis for each and every project. Crosswall construction has the ability to connect walls and floors together and thus avoid the need for a steel or concrete frame. Load bearing walls transmit vertical loads and act as shear walls to...

The diagram shows the grouted stitched connection detail between two crosswall units. Construction Method Crosswall Panels are ‘stitched’ together on site at the joints by pouring a concrete grout into the reinforced joints of adjacent panels enabling continuity to be achieved. A small amount of internal decoration is required. This method of construction allows buildings to be erected faster than with using a conventional frame. Floor slabs are connected and grouted into the wall panels CCP Crosswall Construction further benefits: // Acoustic Separation is minimised due to the density of...

Crosswall Technical Details: The illustrations below show upper floor connections: Wall shoe cast into base of panel Connection bolt and plate Grout filler tube Wall shoe cast into base of panel Connection bolt and plate Floor plank Floor plank 50mmØ dowel pocket Foundation anchor cast into head of lower panel Typical Sandwich panel to panel horizontal joint using wall shoes Typical Sandwich panel to panel to floor horizontal joint using wall dowels Foundation anchor cast into head of lower panel Typical Sandwich panel to panel to floor horizontal joint using wall shoes The illustrations...

What is Thermofloor? thermofloor Thermofloor is an exposed flat soffit concrete flooring slab which is supplied by CCP to site ready for decoration. Widths of Thermofloor units can be varied to suit the geometry of the project. Joints between units can either be filled and smoothed prior to decoration or can be expressed as a feature. Why choose Thermofloor? // Excellent finish to units // No need for a suspended ceiling // Maximise thermal mass effect // Reduction in follow-on trades Thicknesses of Thermofloor? Thermofloor Units are usually between 150mm and 200mm depending on the...

What are Thermowall Panels? Thermowall Panels comprise of two layers of concrete with a layer of insulation sandwiched in between. They are connected together with non-metallic low conductivity ties to ensure that the panels remain thermally efficient and there is no ‘cold bridging’ between the layers. Conventionally, the two skins of walls are connected with metallic ties which allow thermal bridging. CCP’s Thermowall Panels replace these metallic ties with non-metallic connectors which have a conductivity value of 0.3W/m2K enhancing the performance of the insulation. These connectors do...

stairs PROJECT: Office Development PLACE: Bracknell CCP’s Quicklay Staircases are custom made to suit the client’s requirements. Staircases are made in modern variable steel moulds which allow the geometry of the staircase to be altered to suit a particular project. They are fabricated with either flights supported off precast landings which are built in, or flights with quarter landings attached onto steelwork supports. All units can be offloaded and craned directly into place. Precast flights are generally cast face down but can be cast on their side or face up to suit the client’s...