Types of ground floors

13,576 views

Published on

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

Published in: Education, Business
0 Comments
1 Like
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total views
13,576
On SlideShare
0
From Embeds
0
Number of Embeds
10
Actions
Shares
0
Downloads
357
Comments
0
Likes
1
Embeds 0
No embeds

No notes for slide

Types of ground floors

  1. 1. Types of ground floors
  2. 2. Suspended Ground floor-1890’s Joists supported on sleeper & external wall Minimal ventilation Rising Damp No insulation
  3. 3. Ventilation for a suspended floor Terra cotta air brick through wall
  4. 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. 5. Modern Timber Floors Timbers are longer Extra ventilation Insulation incorporated
  6. 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. 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. 8. Upper floors To provide extra stability for external walls Joists built into wall Chipboard typically placed on top of joists
  9. 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. 10. Upper Floor Chipboard upper floor with water proof covering and taped joints

×