sand layer under surface beds? recommended?
sand layer under surface beds? recommended?
(OP)
Hallo Engineers
I just wanted to find out if it necessary to provide a sand layer under the concrete surface bed.
Very often you see this detail in books. I guess it is there to level the natural ground
Section would be then (from top to bottom):
1. tiles
2. surface bed 100 mm
3. plastic sheet
4. sand layer 40 mm
5. natural ground
BauTomTom
I just wanted to find out if it necessary to provide a sand layer under the concrete surface bed.
Very often you see this detail in books. I guess it is there to level the natural ground
Section would be then (from top to bottom):
1. tiles
2. surface bed 100 mm
3. plastic sheet
4. sand layer 40 mm
5. natural ground
BauTomTom






RE: sand layer under surface beds? recommended?
RE: sand layer under surface beds? recommended?
thanks for the comment
compact well: this makes also sense, right
capillary barrier: by normal sand? gravel I would understand but by sand?
less restrictive friction surface: this didn't come in my mind but you right.
so in the end you would definately say it should be provided, right? and how thick should the layer be?
BauTomTom
RE: sand layer under surface beds? recommended?
The sand layer should be 6 to 8 inches thick.
RE: sand layer under surface beds? recommended?
higher then 2.75mm sand this makes sensse
BauTomTom