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Question is in the title really - why?!
Just had a quote for some assistance with the ring beam, in which the quote mentions putting 2" blinding in the base of the ring beam trench - the trench is all shuttered and ready, with the base being of level sand around 25mm below the bottom of where the ring beam should be.
What exactly is the difference between just pouring the 425mm of concrete (400mm ring beam plus 25mm), and digging out another inch of sand, blinding with 50mm of concrete, then getting bloke back out a few days later to pour another 400mm?!
OK so there is the obvious additional 25mm of concrete - but that's not called for in the structural engineers reports so in my mind is a waste of money - unless I'm missing something...
Just had a quote for some assistance with the ring beam, in which the quote mentions putting 2" blinding in the base of the ring beam trench - the trench is all shuttered and ready, with the base being of level sand around 25mm below the bottom of where the ring beam should be.
What exactly is the difference between just pouring the 425mm of concrete (400mm ring beam plus 25mm), and digging out another inch of sand, blinding with 50mm of concrete, then getting bloke back out a few days later to pour another 400mm?!
OK so there is the obvious additional 25mm of concrete - but that's not called for in the structural engineers reports so in my mind is a waste of money - unless I'm missing something...