Achieving top performances
As many as 34 HAMM machines of the 300 series were in action during construction of the Sri Komaravelli Mallanna Sagar Reservoir, compacting layer upon layer of different construction materials: soil, murrum soil and black cotton soil. The large number of machines is explained by the scale of the construction project – the reservoir dam is approximately 400 m wide at the base and is still 8 m at the very top. To complete the outer skin of the dam, compactors had to cope with an incline of approximately 36 per cent, whilst compacting at the same time. The 311D compactors from HAMM were convincing products in this situation, as their drum drive gives them an impressive ability to climb.

A reliable powerhouse
The engine with a rated output of 74 kW (100 hp) supplies the HAMM 311D with plenty of power to ensure a sustainable, stable amplitude output when compacting such steep slopes. Its static linear load of 30 kg/cm is every bit as impressive as its centrifugal force of 240 kN. This power leads to good compaction performance.

Outstanding working safety
Working with construction machines on a slope exceeding 35 per cent involves potential safety risks including rollover or slipping which may injure machine operators and other workers on the job site. So, it was lucky for everyone that the HAMM 311D offers a high level of safety because it can be fully self-locked by braking. This eliminates the phenomenon of slipping on the slope and thus avoids potential safety hazards.