JACKED BOX TUNNELLING - Norwich Engineering …

JACKED BOX TUNNELLING Using the Ropkins SystemTM, a non-intrusive TUNNELLING technique for constructing new underbridges beneath existing traffic arteries DR DOUGLAS ALLENBY, Chief TUNNELLING Engineer, Edmund Nuttall Limited JOHN W T ROPKINS, Managing Director, John Ropkins Limited Lecture presented at the Institution of Mechanical Engineers Held at 1 Birdcage Walk, London On Wednesday 17 October 2007 Institution of Mechanical Engineers 2007 This publication is copyright under the Berne Convention and the International Copyright Convention. All rights reserved. Apart from any fair dealing for the purpose of private study, research, criticism or review, as permitted under the Copyright, Designs and Patent Act, 1988, no part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means without the prior permission of the copyright owners.

Jacked Box Tunnelling using the Ropkins System TM, a non-intrusive tunnelling technique for constructing new underbridges beneath existing traffic arteries Dr Douglas Allenby BSc(Hons) PhD CEng FICE FIMechE FGS, Chief …

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