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Types of ground floors
Types of ground floors
Types of ground floors
Types of ground floors
Types of ground floors
Types of ground floors
Types of ground floors
Types of ground floors
Types of ground floors
Types of ground floors
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Types of ground floors

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College of North West London presentation; for the National Diploma in Construction

College of North West London presentation; for the National Diploma in Construction

Published in: Education, Business
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  • 1. Types of ground floors
  • 2. Suspended Ground floor-1890’s Joists supported on sleeper & external wall Minimal ventilation Rising Damp No insulation
  • 3. Ventilation for a suspended floor Terra cotta air brick through wall
  • 4. Improvements in design Joists sitting on sleeper wall with attached wall plate. Incorporation of dpc to prevent rising damp Sleeper walls built in ‘honeycomb’ style to allow extra ventilation Extra air bricks
  • 5. Modern Timber Floors Timbers are longer Extra ventilation Insulation incorporated
  • 6. Suspended concrete floors Typical block and beam floor Quick and cheap to install Inverted ‘ T’ shaped beams Concrete blocks placed in between them
  • 7. Ground Supported floors Solid ground of hardcore supports concrete floor Thick damp proof membrane placed under concrete with a layer of insulation Typical slab – 150mm with reinforcement
  • 8. Upper floors To provide extra stability for external walls Joists built into wall Chipboard typically placed on top of joists
  • 9. Upper floors Galvanised joist hangers are built into wall Forms a ‘shoe’ or ‘seat’ for joist to sit in. Modern prefabricated joists with metal banding are now commonly used
  • 10. Upper Floor Chipboard upper floor with water proof covering and taped joints

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