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Technical details about strength , density , hardness, elasticity , environmental aspects , fire resistance of Marmox manhole covers

TECHNICAL SPECIFICATION OF MARMOX MATERIAL

PROPERTYMEASUREMENT METHODVALUESUNIT
Density DIN 534722.45 (±5%)g/cm3
Bending StrengthDIN 1164300 (±5%)kg/cm2
Compressive StrengthDIN 11641150 (±5%)kg/cm3
Tensile StrengthDIN 53455 150 (±5%)kg/cm2
Modulus of ElasticityDIN 534572.5 x 105kg/cm2
Surface HardnessDIN 53505≤ 80
Linear Thermal Coefficient of ExpansionVDE 0304/11.5 x 10-5 / 1° C
Water AbsorptionDIN 53495größer als 0.1%
Chemical ResistanceHighly Resistant
Environmental AspectsEnvironmentally Friendly
Fire ResistanceDIN 4102Fire Resistant (A2)

CLASSES OF MARAMOX MANHOLE COVERS

GROUPMIN. CLASSPLACE OF INSTALLATION
1A-15Areas which can only be used by pedestrians and pedal cyclists
2B-125Footways, pedestrian areas and comparable areas,c ar parks or car parking decks
3C-250For gully tops installed in the area of curbside channels of roads which when measured from the curbside, extends a maximum of 0.5m into the c arriage way and a maximum of 0.2m into the footway
4D-400Carriage ways of roads (including pedestrian streets), hard shoulders and parking areas, for all types of road vehicles
5E-600Areas imposing high wheel roads, e.g. decks, aircraft
6F-900Areas imposing particularly high wheel loads, e.g. aircraft pavements

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