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Tarmac triallin tipper twosome

26th January 1995
Page 18
Page 18, 26th January 1995 — Tarmac triallin tipper twosome
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by Bryan Jarvis • Tarmac Roadstone North West is evaluating operational differences among four insulated semi-trailers; two front-end tippers from Fruehauf and a pair of Wisbech Bulk Systems trailers with underfloor hydraulics.

The quartet will operate via contracted hauliers from Tarmac's Clitheroe, Lancashire base.

Both designs are built to meet and exceed the LRTE Category A 7° tilt-test standard which is mandatory for all trailers bought by Tarmac.

WBS recently demonstrated the non-topple capability of its trailer duo, achieving 8° on the ground, 10° at the chassis and 12° for the body.

The Wisbech models both use the Harsh M130 stabilised underfloor system, the Fruehauf trailers, which are designed to tilt and tip across an 8° slope, have the more traditional front-end Hyva tipping rams.

These are recessed into the body but the inset is angular to help discharge.

Fruehauf tensions the cladding using insulated tanker techniques and bolts the wings to the frame without any insulation breaks.

All four have front-end steps and low-level flashing safety lights at the rear in accordance with the Supply of Machinery (Safety) 1992/CE legislative requirements.

Compared with the 21tonne-and-over payloads of eight-leggers, tipping trailers offer more than 16% extra carrying capacity plus a £1,520 saving in VEll between the two configurations.

According to Tarmac's transport manager Bill Rowlandson: "Tipping stability and operational safety are our main priorities".

Motorway re-surfacing work can be done by artics and if they can cope with some of the more difficult sites to deliver the extra 3.0 tonnes-plus then Tarmac is very interested in the concept; "Providing there's no compromise on safety," says Rowlandson.


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