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Types of ground floors
 

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

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    Types of ground floors Types of ground floors Presentation Transcript

    • Types of ground floors
    • Suspended Ground floor-1890’s Joists supported on sleeper & external wall Minimal ventilation Rising Damp No insulation
    • Ventilation for a suspended floor Terra cotta air brick through wall
    • 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
    • Modern Timber Floors Timbers are longer Extra ventilation Insulation incorporated
    • Suspended concrete floors Typical block and beam floor Quick and cheap to install Inverted ‘ T’ shaped beams Concrete blocks placed in between them
    • 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
    • Upper floors To provide extra stability for external walls Joists built into wall Chipboard typically placed on top of joists
    • 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
    • Upper Floor Chipboard upper floor with water proof covering and taped joints