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abbr. skid resistance value

This is the value obtained from the actual road surface, measured using the Portable Skid Resistance Tester. The resistance to skidding of a road surface, i.e. its SRV, is dependent on the Polished Stone Value (PSV) of the aggregate in the surface course asphalt and the macrotexture (roughness) of the surface course material.



abbr. site waste management plans

A tool for construction companies and clients, of all sizes, to improve environmental performance, meet regulatory controls, and reduce rising costs of disposing wastes. Originally developed as a DTI Voluntary Code of Practice, SWMPs provide a structure for systematic waste management at all stages of a project's delivery. The requirement for SWMPs is due to become a legal requirement for all construction projects over £250,000 in April 2008.


Sand Processing

In the quarrying of sand and gravel, it is a general term (viz. ‘sand plant’) which describes the wet processing of material of a size less than 4mm.  The larger particles are ‘gravel’.



Intermediate plutonic rock consisting mainly of alkali feldspar with plagioclase, hornblende, biotite or augite.


Sustainable Development

The simple idea of ensuring a better quality of life for everyone, now and for generations to come. A widely used international definition is 'development which meets the needs of the present without compromising the ability of future generations to meet their own needs.'


Sustainable Construction

Sustainable construction involves delivering buildings and structures that provide greater satisfaction; increasing well-being and value to customers and users; respecting and treating stakeholders more fairly; enhancing and better protecting the natural environment; minimising construction's impact on the consumption of energy and natural resources - as well as making the construction industry more profitable and more competitive.