When selecting enclosure type, designers and end users must determine if enclosure will be placed in trafficable application; whether traffic is deliberate (e.g. along driveway) or accidental (e.g. along footpath); and whether traffic is vehicular or pedestrian nature. In addition, consideration must be given to ground topography, soil conditions, and building location.
Pits positioned in a long cable route can typically cross various types of load scenarios. Each pit location should be individually considered.
There is no Australian standard that tests for cable pit strengths. AS/ACIF S008 provides basic performance criteria for communications pits. Some telecommunications carriers have their own criteria.
To give assistance in selecting correct enclosure, table below is based on loadings outlined in AS 3996 (Access Covers & Grates). This is cross referenced with international standards, EN 124 and EN 1433, the latter, best suited for surface cable ducting.
ACO has NATA accreditation (No. 15193) for its testing laboratory and can provide NATA certified test reports for load tests set out in AS 3996, EN 124 and EN 1433.