Prestressed Plate Flooring

Prestressed Plate Flooring

A fast, versatile solution for composite structural flooring

If you've never considered plate flooring as an option when specifying, AG’s unique prestressed plate flooring design allows for greater spans than other systems – offering a huge amount of flexibility and opening up many new design possibilities.

Upstand ribs cast onto the plate flooring during manufacture create a very versatile system and it’s ideal as a composite option – where disproportionate collapse, beams or other elements such as balconies need tied to the building.

The benefits of prestressed plate

Our prestressed plate flooring system allows building designers to achieve a continuous floor design that works for concentrated point loads, HA/traffic loadings and complex building designs. It generally doesn't need propping during installation and is the easiest way of achieving progressive collapse detail in a building design.

Our prestressed plate doesn’t require modification for Class 2A & 2B buildings, offering flexibility in the design and often reducing the need for vertical ties. It provides a great solution for composite beams, with steel or concrete.

Prestressed Plate

The scale and experience to deliver

AG Precast's size and track record mean that we're a partner you can really depend on. All our customers are given dedicated sales and contract managers, meaning that you'll have a small, responsive and experienced team working directly on your projects.

Design Characteristics

As the system does not need propped, installation is fast and efficient. The upstand ribs can be used to support the mesh at the correct level and the entire structure can be completely decked before any concrete needs to be poured, giving you greater flexibility within a build programme. On a steel frame the complete building can be decked out without any in situ concrete, which can be poured to suit the programming of edge details.

Composite Steel Beam Design

Composite Steel Beam Design

Typical Section for Composite Prestressed Plate Floor

Typical Section for Composite Prestressed Plate Floor

 

Precast Composite Balcony

Precast composite balcony

Live Load Tables

Allowable floor live loads (kn/m2) for unpropped composite plate
This table indicates allowable characteristic live loads for various upstand arrangements and plate thickness using a 35N/mm2 in situ concrete topping. (Allowance has been made for self weight of composite unit).

Height of Upstands (mm) - H 45 60 85 110 135 135 135
Thickness of Plate (mm) - T 50 55 55 55 55 55 55
Composite Depth (mm) 150  175  200  225 250  275  300 
3.0m unpropped clear span 15 27 33 39 45 51 57 
3.5m unpropped clear span 8 20  28  34 38  44  49 
4.0m unpropped clear span 13  25  30 34  38  43 
4.5m unpropped clear span 18  26 30  34  38 
5.0m unpropped clear span - - 12 18 23 27 31
5.5m unpropped clear span - - 8 13 23 27 31
6.0m unpropped clear span - - - 9 13 15 16
6.5m unpropped clear span - - - 5 9 11 11
7.0m unpropped clear span - - - - 6 6 6

 

FIGURES ARE FOR GUIDANCE ONLY PLEASE CONSULT OUR TECHNICAL TEAM FOR FULL DETAILS 

When using maximum span consideration must be fiven to the effects of deflection, vibration and camber. Greater clear spans can be achieved by mid-span temporary propping. 

Allowable floor live loads (kn/m2) for propped composite plate

This table indicates allowable characteristic live loads for various upstand arrangements and plate thickness using a 35N/mm2 in situ concrete topping. (Allowance has been made for self weight of composite unit).

Height of Upstands (mm) - H 45 60 85 110 135 135 135
Thickness of Plate (mm) - T 50 55 55 55 55 55 55
Composite Depth (mm) 150  175  200  225 250  275  300 
3.0m propped clear span 20 27 33 39 45 51 57 
3.5m propped clear span 13 20  28  34 38  44  49 
4.0m propped clear span 8 17  25  30 34  38  43 
4.5m propped clear span 5 12 18  26 30  34  38 
5.0m propped clear span 3 8 15 18 23 27 31
5.5m propped clear span - - 11 17 18 22 25
6.0m propped clear span - - 8 13 15 17 20
6.5m propped clear span - - 6 9 12 14 16
7.0m propped clear span - - 4 8 9 11 13
7.5m propped clear span - - - 5 8 9 10
8.0m propped clear span - - - - 5 6 8
8.5m propped clear span - - - - - 4 6

 

FIGURES ARE FOR GUIDANCE ONLY PLEASE CONSULT OUR TECHNICAL TEAM FOR FULL DETAILS 

When using maximum span consideration must be given to the effects of deflection, vibration and camber.

Composite Steel Beam Design

Composite Steel Beam Design

Composite Concrete Beam Design

Composite Concrete Beam Design

Cantilevered Plate

Cantilevered Plate

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