Platespan® Prestressed Plate Flooring

Platespan® Prestressed Plate System

A revolution in composite structural flooring

If you’re still designing around the large-scale use of in situ concrete, then you’ll know what a slow and inflexible build process this can create. Platespan® prestressed plate flooring changes all that – letting contractors save months of build time on large projects.

AG’s Platespan® system is inherently faster, more flexible – and safer: if you’ve always designed and built around in situ concrete flooring, we can give you a huge competitive advantage in the delivery of large builds.

Switching to Platespan® delivers huge advantages

Traditional in situ construction methods are a slow floor-by-floor process. Platespan®, however, almost completely removes the need for propping and lets you plan your floor pouring and other trades in a much more flexible and efficient way.

The system also has the advantage of being manufactured in a carefully controlled environment with a high-quality, factory-formed finish. It’s also designed to work well with shear stud connectors and integrate easily with details like balconies and parapets.

If you’re looking for a catch, there simply isn’t one – Platespan’s innovative design and wide span length means that it’s a suitable replacement for traditional methods in a huge range of Class 2A & 2B buildings with both steel and concrete frames. And even if you already have completed plans, we’ll happily rework these for you to demonstrate the huge time and cost savings Platespan® that can offer. You can find out more in our current Structural Precast Portfolio brochure.

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

Because the Platespan® system only very rarely needs propping, installation is fast, safe and efficient. It’s also easier to design for progressive collapse because the system forms a composite design with reinforced concrete and steel beams, tying all the structural elements together as a cohesive unit.

The system’s upstand ribs can be used to support 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.

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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