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Mannok Precast Hollowcore 250

Machine formed pre-stressed concrete flooring system which eliminates many of the difficulties confronting builders who have to work with adverse ground conditions. It gets rid of costly excavation, provision and compaction of infill and provides an immediate dry working platform.

The hollow core units are cast on steel moulds and have a type 'A' soffit finish as defined in BS 8110-1. The top of hollow core units can be roughened during manufacture to ensure an adequate bond is achieved when a structural screed is required. Manufactured in accordance with BS EN 1168.

General information
Uniclass 2015
Pr_20_85_14_14 Concrete hollow core slabsPrimary

E60/140 Precast floor plate

E60/30 Precast slab

Specification data - Concrete hollow core slabs
Product Reference

Mannok Precast Hollowcore 250

Surface finish



Standard product features


250 mm.

Technical properties:

  • Weight: 329 kg/m².
  • Density: 3.43 kN/m² (grouted).
  • Fire rating (to BS EN 13501-1): A1.
  • Characteristic strength (at 28 days): 50 N/mm².
  • Fire resistance (minimum): 1 hour.

Third party certifications
  • ISO14001Environmental System Cert No. EMS 552208
  • ISO9001 Quality Management system Cert No. FM25342
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