Specification for steel and aluminium access cover systems with over 1 m clear opening Ingestion-build-67170 containing alloying elements in amounts

containing alloying elements in amounts equal to or greater than the limiting values fixed by EN 10020

routine maintenance

final measurements

It provides the dimensions to which the values given in EN 547-3 are applicable

Convexity–Concavity

Specification for steel and aluminium access cover systems with over 1 m clear opening Ingestion-build-67170 containing alloying elements in amountsWith the increasing number of underground work places, and several of these requiring access for persons and equipment, an opening of at least 1 metre, sometimes much larger is needed. With growing attention to safety at work (especially in the construction industry) it is important to have a rationalised approach to the design, testing and user safety of this type of product. These items are large versions of manhole covers, which are lifted by