| Common installation deficiencies |
|---|
| • Failure to compact to 95 per cent proctor density (a laboratory method of experimentally determining the optimal moisture content at which a given soil type will become most dense and achieve its maximum dry density). • Failure to install edge restraints at perimeter of pavement. • Failure to the properly specify and install base and sub-base materials. • Failure to adequately re-compact the pavement system after the installation of joint sand. |
Where loads are applied to ICPs their interlocking action dissipates the pressure sideways and downwards into the sub-base. Similarly, should the underlying materials move, the blocks are flexible enough to follow the line of settlement without failing. This flexibility, coupled with high strengths, makes the units suitable for pool and spa deck applications.
Routine visual inspection
It is a recommended practice to conduct an annual visual inspection of ICPs in the spring to identify any units that may have been damaged or displaced. (Unlike conventional pavements, stained, or damaged ICPs can be replaced.) The joints between the pavers should be inspected to determine if any sand has been lost. Joints with low or no sand should be topped up with bedding sand and swept clean. Cleaning and sealing will discourage ants and weeds in the joints and enhance the colour of the surface. It is a great way to add new life to a refurbished area.
Brian Burton operates a multidisciplinary firm that specializes in website design and development, and technical business writing. The firm also assists companies interested in selling goods and services to governments and institutions. He can be reached via e-mail at burton@award-bid-management.com.
