This is the third in a series of four reports (Contractor Report Nos 228-231) that deal with the design of buried flexible pipes. In this report the possible applications of the proposed new design method developed by Gumbel (1983) for the Transport and Road Research Laboratory (see IRRD 800757) are presented. Eleven charts are presented which cover the complete range of possible deflection and buckling behaviour. Examples are given of the use of the charts for the design of buried flexible pipes and the selection of design parameters with particular emphasis on the selection of the equivalent elastic properties of the backfill.

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