... the requirements of ASTM A975-97. Length (m)Width (m)Height(m)Numberof diaphragmTolerance320.17-0.32Length+/-3 ... %Width+/-5%Height+/-5%420.17-0.33520.17- ... be hard,angular to round,durable,range between 75 mm and 150 mm.Start at the bottom if on a slope, ... To allow of settlement,level off the fill 25 mm above the top of the mesh,Securelly attach the ...