Freecycle Comes Up Trumps Again

40 slabs come up for grabs, I came second but the first respondent only wanted 28 so I managed to pick up 12 number 400 x 400 slabs from Worcester Park and take them down the allotment. So that's 12 x 0.4m - 4.8m which is 6 slabs on 2.4m path or 3 per 2.4m path to weight down the membrane at the ends and the middle.