The Main Roads Technical Specification Part 5 (MRTS05) provides a technical standard which applies to the construction of unbound granular pavements, where it may be used as part of the construction of unbound pavements or as the base and/or sub-base for sprayed seal or asphaltic pavements. Section 7.2.4 of MRTS05 outlines the particle size distribution envelopes that can be specified under construction contract requirements for a given project and location.
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