Pythagoras Theorum. see this page . It goes into great detail. If it doesnt look correct check it again. Getting it right now saves alot of headache, time and money later.
on your job mick i would go 3m out by 4 m along the house then measure 5m between these 2 points
the bigger the square the greater the accuracy
obviously your footings need to be 100mm outside the wall
another way of checking once you get your lines in is measuring the 2 diagonals,in a rectangle these must be the same,which according to my calculations will be 6.80073525m or 6.8 m for short
like stuarty says get it 100% right before you start digging
cheers LLL
Oh Tony, may sound cheeky but your book, is it in the shops or do we get it direct from you at a discount
yes its a special discount its called "the what its woirth discount" whereby you pay a fiver more than amazon,but at least you know the gaffer has a hot pot and a pint of ale on friday
i bought it from tony (which he signed as requested) and to be honest its worth £50
cheers LLL
if the diagonals are 10 mm out then it means tou have a very very slight diamond shape, TBh i would let 10 mm go on the found,but try and get the bwk spot on or the roof will be skew whiff
cheers tony
