Gradient [2]

A structural quality performance standard which states the maximum fall desired on a surface, such as 1:100 + or >1:100, which means the surface should be no steeper than the figures given, e.g. 1:80 would be outside the requirement, whilst 1:120 would fall within the requirement. The standard may also state a range in which the gradient should fall, for example, 1:150 ¯ 1:100. The standard may also be further qualified by stating different acceptable gradient figures for a north-south and east-west direction on the surface, which can be particularly helpful on sports surfaces.