Looks at the introduction of the MTMM in 1969 and the way it streamlined the measurement of drainage. Outlines various types of pavement and their relation to tabulated billing, as the MMHW, where provided for in a contract, permits the tenderer to select the type of pavement to be constructed from a number of alternatives provided for in a separate bill of quantities. Itemises various types of drainage components such as filter drains and sewers. Highlights a unique procedure for adjusting the rates for the pipe runs to take account of any variance in depth, as adjustments may increase or decrease the contract price. Concludes that measurement and billing of drainage is much more sophisticated than it used to be, although problems in Series 500 concerning highway works could mar an otherwise good approach to drainage measurement. (See also Abs67770, Abs67769, ABS67964, Abs68163, Abs68280, Abs68473, Abs68677, Abs68871).