Baydrive Geotechnical Engineering

Managing Director Roger de Charmoy has speant 12 years in the piling industry. He undertakes to implement specialist designs and engineering works of every sort, including piling, lateral support, ground anchors, pipe-jacking, basements, excavations, and shaft-sinking in deep soft soils. He has always sought out and utilized the expertise of highly experience design engineers to derive innovative solutions to every contract which he personally oversees.

Partners - Herman de Lange, Roger de Charmoy, Clive Wilson and Jon Pass ensure the perfect balance of experience, technical expertise and project management.  Allow us to present you with some of our engineering qualifications and background.


Full Name: Jonathan Charles Pass

Present Position: Partner in Wilson & Pass Inc (WPI)

Nationality: South African

Profession: Civil Engineer

Education: BSc Eng (Civil) University of Natal, Durban, South Africa

Post graduate courses at the University of Natal & Witwatersrand

Professional Status: SA Institute of Civil Engineers, Member of the Engineering Council of South Africa & the South African institute of Waste Management.

Summary of General Experience

Jonathan Pass employed by McLaren & Eger (Pty) Ltd, piling contractors as a site engineer working on all types of deep foundation construction subsequently becoming technical manager before the company closed in 1986.

Worked as a resident engineer and geotechnical engineer for Clive Wilson Associates before joining A A Loudon & Partners.

At A A Loudon and Partners  worked on the design of the New England Road landfill in Pietermaritzburg, landfills at Bulbul Drive, Mariannhill, Shongweni, Holfontein, Compensation, Ixopo, Isithebe, Mpumalanga, Mkuzi and Craigieburne.

Undertook consulting engineering work for road pavements, road rehabilitation, geotechnical investigation and pile design, flood analysis and slope stability analysis.  Also post graduate study at the University of Natal (now UKZN) and the University of the Witwatersrand (Wits) in geotechnical and environmental engineering.

Joined Clive Wilson Associates, later Wilson & Pass Inc, to work on geotechnical, environmental and civil engineering projects as well as lecturing at the University of Natal in soil mechanics.

Landfill projects included the design of a number of phases of expansion at the Bisasar Road (closed in 2016 but up until that time the largest landfill in South Africa) general waste landfill for Durban Solid Waste (DSW), eThekwini Municipality.  The work included contracts for geomembrane and GCL lining, the installation of leachate interception drainage, contaminated liquid storage pond design and final capping design.  Other related work included the design of odour management as well as landfill gas extraction and utilisation contract.

Waste gas utilisation included the contract for gas to electricity projects utilising spark ignition engines running on gas from landfills, furnace operation, biomass and anaerobic digestion, specifically the SACC project in Newcastle South Africa with a 6MW power output.


Full Name: Clive Wilson

Present Position: Partner in Wilson & Pass Inc (WPI)

Nationality: South African

Profession: Civil Engineer

Education: BSc Eng (Civil) University of Natal, Durban, South Africa

Fellow of the Association of Arbitrators (Southern Africa), May 2007

Registered Professional Engineer in South Africa, 1979

Member South African Institution of Civil Engineers, 1982

MS (Geotechnical Eng) University of California Berkeley, 1981

BSc (Civil Eng) University of Natal, 1973

Summary of General Experience

(1976-1979) Site engineer, Sir Alexander Gibb and Partners: 1000MW Drakensberg Pumped Storage Scheme- underground power station and tunnels, Natal, South Africa

(1979-1980) Design engineer, Ninham Shand Inc, consulting civil engineers in Cape Town: design of dams, including 40m high, double curvature concrete arch dam (Fairy Glen Dam) and various embankment dams, plus roads and structural foundations

(1980-1981) University of California at Berkeley: MS degree geotechnical engineering, rock mechanics and tunnelling, and design of embankment and concrete dams

(1981-1985) Associate, K Knight & Associates, and later partner, Knight Dames and Moore, consulting geotechnical civil engineers, Durban

(1985-1995) Director, Wilson & Pass Inc, consulting geotechnical and civil engineers, Durban

(1995-2000) Design team leader for construction of twin, 4 km long, three lane, Melbourne City Link highway tunnels, including design of rock support and concrete lining; analysis of groundwater drawdown and consolidation of soft clay; groundwater recharge.

(2000 - 2017) Wilson & Pass Inc, Durban, South Africa: geotechnical and structural engineering consultants, deep excavations, soft and hard rock tunnels, earthworks, waste disposal, piles and other structural foundations; Arbitration, adjudication; teaching and consulting on construction law; Fellow of the Association of Arbitrators; shareholder in geotechnical contracting company Baydrive Geotechnical.

Awards (Shared with Others)

Concrete Society of SA Fulton Award, 2009, 40m high water tower, East London

SAICE Award “Excellence in Civil Engineering”, 2007, “Top-Down” basement construction, Umhlanga Hospital Extension

SAICE Award, 2006, Durban Harbour Tunnel

Converse Ward Davis Dixon Award, Geotechnical engineering, University of California, Berkeley, Department of Civil Engineering, 1981