Concrete base - Concrete base on turf for gazebo

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southward
Posts: 2
Joined: Tue Jan 24, 2006 7:41 am
Location: Northumberland

Post: # 10743Post southward

I need to site a gazebo in my walled garden and the instructions say it needs to be on a concrete base. Not sure how much turf I need to dig nd if I need to lay the concrete on a membrane. Any ideas, apart from ring a builder..?!! All suggestions gratefully received!

Anna

MatthewWakeman
Posts: 70
Joined: Sat Jan 07, 2006 9:38 am
Location: West Midlands

Post: # 10746Post MatthewWakeman

Anna

Best practice would be to excavate 125mm of turf and soil import type 1 stone 40-50mm and compact add a sand blinding (20mm) and lay a damp proof membrane on the sand then the concrete bed min 75mm

Hop ethis helps

regards

Matthew
drivewaycompany.co.uk

southward
Posts: 2
Joined: Tue Jan 24, 2006 7:41 am
Location: Northumberland

Post: # 10749Post southward

Matthew,

Very many thanks for your kind and helpful reply - much appreciated!

Anna

Tony McC
Site Admin
Posts: 8346
Joined: Mon Jul 05, 2004 7:27 pm
Location: Warrington, People's Republic of South Lancashire
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Post: # 10821Post Tony McC

Construction of a simple concrete slab is covered on the main website - see Concrete hardstanding page.

I'm not so sure about Matthew's suggestion to use 40-50mm of sub-base. That's not really enough to be anything other than a blinding. Sub-bases should always be at least twice the depth of the largest particle, and given that Type 1 material has to pass through a 37.5mm sieve, that means you need at least 75mm for it to act as a sub-base.
Site Agent - Pavingexpert

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