Construction Quantum Archives

Kandace Zimmerman

Kandace Zimmerman is a planning and scheduling professional with over 20 years of experience. She has been appointed as a technical expert on 26 occasions.

Kandace has testified in litigation and arbitrations, including delivering concurrent evidence. She has been the lead expert on numerous mediations and has produced expert reports for disputes with values of up to $35 million.

Kandace has a background in general contracting and insurance matters. Her project experience includes residential, education, commercial, high-rise, leisure, infrastructure, water and wastewater treatment facilities, industrial, and heavy civil work.

Kandace specializes in the analysis of complex delay and disruption matters. Her expertise ranges from construction management, labor productivity, and calculation of damages to scheduling and delay analysis and cost impact and disruption analysis.

Kandace holds a degree in mathematics. She is a member of the American Bar Association (on construction law) and the Association for the Advancement of Cost Engineering International.

Hari Krishna Danda

Hari Krishna Danda is a Chartered Quantity Surveyor with nearly 15 years of experience. He has assisted the named expert on 15 occasions.

Hari has supported in quantum matters at arbitrations under ICC, DIAC, QICCA, BCDR, GCCCAC, and ICSID rules. He has produced expert reports for disputes with values of up to $90 million. He has also conducted workshops with counsels to prepare for the cross-examination of other experts.

Hari has a background in quantity surveying and cost management, contract administration, pre and post-contract management, and as an on-site engineer. He has worked for both contractors and cost and contract management consultants (appointed by developers) on construction projects. He has experience across various projects, including hospitals, stadiums, metro rail, reclaimed residential islands, power, roads, railways, reservoirs, airports, steel plants, and military facilities.

Hari specialises in quantum assessments, disruption analysis, and forensic investigations of completed projects to identify potential fraud in procurement, execution, and certification of executed works. His expertise covers prolongation, disruption and acceleration costs, head office overheads, loss of profits, technical variations, finance charges, interest charges, and loss of opportunity costs.

Hari is a member of the Royal Institution of Chartered Surveyors, the Chartered Institute of Arbitrators, the Australian Institute of Quantity Surveyors, the Canadian Institute of Quantity Surveyors, the Society of Construction Law (Gulf), and the Institute of Engineers India. He is bilingual in Telugu and English.

Darcy Holderness

Darcy Holderness is a professional engineer with over 20 years of experience. He has been appointed as a technical expert.

Darcy has testified as an expert at arbitration regarding engineering and technical root cause determinations, and has assisted in two major arbitrations as a factual witness and proper officer. He has produced expert reports on disputes with values of up to $2 million.

Darcy has delivered nuclear power, fossil fuel, and renewable energy projects covering all aspects of utility power plants, including fuel and waste handling, steam and water cycles, heat rejection systems, water treatment, air handling, and HVAC. This includes over a decade of experience working with carbon capture, compression, transport, and storage systems. He has experience in siting power plants, initial project and organizational development, design review, contract negotiation and administration, construction oversight, commissioning, deficiency management, and operational support. 

Darcy specializes in disputes within the energy industry regarding major project delivery and engineering management. He has expertise in engineering standard of care, construction execution and oversight, and operational and maintenance planning.

Darcy holds a degree in mechanical engineering. He is a member of the Association of Professional Engineers Saskatchewan, the Project Management Institute, and the Canadian Nuclear Society.

David Ward

David Ward is a Chartered Quantity Surveyor with over 10 years of experience. He has assisted the named quantum expert on more than 15 occasions.

David has acted as lead assistant in arbitration, litigation, and adjudication proceedings in the UK and internationally. He has drafted technical sections of expert reports for disputes on buildings, infrastructure, energy, transport, and commercial developments.

David has experience in delivering project management services with a UK contractor. He has assisted clients in a variety of industries, including infrastructure, health, education, industrial, leisure, and high-value residential developments.

David’s expertise includes analysing dispute data and producing assessments relating to delay and disruption costs, variations, and compensation events. He specialises in strategic contractual advice and conducts detailed quantum assessments in complex disputes.

David is dual-qualified in construction law and dispute resolution, as well as commercial management and quantity surveying. He is an accredited project manager, a qualified APC assessor of the Royal Institute of Chartered Surveyors, and holds an advanced professional award in expert witness evidence. David is a fellow of both the Royal Institution of Chartered Surveyors and the Chartered and the Institute of Arbitrators, and a member of the Chartered Institution of Civil Engineering Surveyors and the Society of Construction Law.

Oguzhan Cinar

Oguzhan Cinar is a civil engineer with over 10 years of experience. He has been appointed as a quantum and delay expert and assisted the named expert on 15 occasions.

Oguzhan has acted as an expert in litigation and international arbitration proceedings, as well as a lead assistant in construction disputes. He has prepared expert reports on disputed projects with values of over $1 billion.

Oguzhan has hands-on experience as a civil and cost engineer on construction and infrastructure projects in Qatar, Tanzania and Turkey. He has assisted clients in addressing global settlement issues, conducting financial reporting, implementing earned value analysis, and managing activity and source-based progress and budgeting.

Oguzhan is engaged for both delay and quantum matters. He has expertise in delay analysis, application of various delay methodologies, as well as assessing in prolongation, disruption, final account, and abortive costs.

Oguzhan holds a master’s in construction project management, a bachelor’s degree in civil engineering, and an advanced professional award in expert witness evidence. He is a fellow of the Chartered Institute of Arbitrators, a member of the Chartered Institute of Building, and sits on the audit board and the academic and publications committee of the Society of Construction Law Turkey.

Andrew Merrilees

Andrew Merrilees is a Chartered Quantity Surveyor with over 30 years of experience. He has been appointed as a quantum and delay expert on more than 15 occasions.

Andrew Merrilees enjoys a fantastic reputation in the construction sector for his valuation of damages, with peers and clients recommending him as “a safe pair of hands and a steady witness”.

Lexology Index – Consulting – Construction – Quantum, Delay, and Technical

Andrew has testified in arbitration, litigation, mediation, adjudication, and provided support to dispute boards under the rules of SIAC, AIAC, HKIAC, DIAC, LCIA, and the courts. He has produced expert reports for disputes with values of up to $500 million.

Andrew has extensive experience in building and civil engineering projects, including construction management, design and build, and target cost contracts. He has led commercial and quantity surveying teams while interfacing and liaising with the employer’s representatives, design, architectural, and engineering consultants, construction and planning staff, and legal representatives.

Andrew specialises in expert witness and dispute avoidance involving complex claims and disputes across the construction, engineering and insurance industries. He has particular expertise in delay and disruption and quantum matters of loss and expense.

Andrew is dual-qualified, with qualifications in quantity surveying and law. He is a fellow of the Royal Institution of Chartered Quantity Surveyors, the Chartered Institute of Building, the Association for Project Management, the Chartered Institution of Civil Engineering Surveyors, the Association of Cost Engineers, and the Chartered Management Institute. Andrew is a member of both the Chartered Institute of Arbitrators and the Society of Construction Law, a practising member and accredited expert of the Academy of Experts, and a registered professional surveyor in Hong Kong.

Matthew Hoover

Matthew Hoover is a Certified Public Accountant with eight years of experience. He has assisted the named expert on more than 10 occasions.

Matthew has performed quantum analysis and drafted expert reports in support of state and federal contract disputes and terminations, commercial disputes, and litigation matters before the International Court of Arbitration and the International Criminal Court. He has provided technical accounting advisory services, merger and acquisition due diligence, and contract compliance advisory services on disputes with values of up to $3.4 billion.

Matthew has experience in technical accounting, financial analysis, and regulatory frameworks. He has assisted clients with compliance issues related to the Federal Acquisition Regulation (FAR), Defense Federal Acquisition Regulation Supplement (DFARS), Cost Accounting Standards (CAS), Uniform guidance, and Generally Accepted Accounting Principles (GAAP).

Matthew’s expertise includes cost structure analysis, contract disputes, compliance management, and complex transaction advisory services across the construction, government contracting, healthcare, life sciences, manufacturing, nonprofit, technology, and transportation industries. He has prepared clients for and participated in settlement negotiations with federal agency representatives, as well as performing federal contract closeouts.

Matthew holds degrees in both accounting and information systems and business information technology. He is a member of the American Bar Association and the Virginia Society of Chartered Public Accountants.

Deviprasad Pentapati

Deviprasad Pentapati is a civil engineer with over 20 years of experience. He has been appointed as a technical expert and has been an assistant to the named expert on 15 occasions.

Deviprasad has supported with domestic and international arbitrations in federal and state court proceedings. He has assisted on matters in various alternative disputes resolution forums and authored expert reports on disputes with values of up to $1 billion.

Deviprasad has held roles on projects as a program controls director, senior project controls manager, senior scheduler, and a senior claims specialist. His industry experience includes airports, data centers and technology, transportation and infrastructure, grade separations, power plants, high-rise residential, commercial and mixed-use buildings, oil and gas infrastructure (refineries, pipelines), correctional facilities, water and wastewater treatment plants, wind farms, chemical and LNG plants.

Deviprasad specializes in critical path method scheduling, delay and disruption analysis, assessment of damages, analyzing productivity and inefficiencies, risk management, cost tracking and cashflow forecast, and change management. He has assisted clients on complex domestic and international disputes and has evaluated claims ranging from $5 million to $1 billion on disputed projects relating to light rail, transportation, power, buildings, pipelines, LNG plants, and chemicals.

Deviprasad is a professional engineer, a certified construction manager, a project management professional, a planning and scheduling professional, a risk management professional, and a certified occupational safety and health administration professional. He is a member of the Association for the Advancement of Cost Engineering, the Project Management Institute, and an active participant at the Design-Build Institute of America.

Thomas Shearn

Thomas Shearn is a Chartered Quantity Surveyor with nearly 20 years of experience. He has been appointed as a quantum expert twice and has supported the named expert on nine occasions.

Thomas has assisted in a range of transportation and manufacturing related disputes in litigation and international arbitration. He has been engaged as an expert for matters in adjudication and has prepared expert reports on disputes with values of up to £4.1 million.  

Thomas has experience working with main contractors, subcontractors, and consultancies in the aviation, defence, highways, petrochemical, and water industries. He is knowledgeable in the majority of standard forms of construction contracts, including NEC, JCT, and FIDIC, as well as bespoke contracts.    

Thomas has expertise in assessing variations, prolongation costs, subcontractor delay and disruption, opinion on causation, and alternative figure assessment. His expert appointments have included adjudications for both a hotel development dispute and an assessment of the replacement services at a manufacturing facility.

Thomas holds master’s degrees in both construction law and arbitration and quantity surveying and commercial management. He is a RICS certified expert witness and has undertaken the advanced professional award in expert witness evidence. He is a practising associate of the Academy of Experts and a member of the Royal Institution of Chartered Surveyors, the Society of Construction Law, and the Adjudication Society. 

Xiaoye Ye

Xiaoye Ye has over ten years of experience in the construction industry. She has been appointed as a quantum expert and assisted the named quantum expert on ten occasions.

Xiaoye has acted as an expert in a French litigation case and as a lead assistant in various international arbitration disputes.  She has assisted with expert reports and cross-examination strategies on disputed projects with values of up to €400 million.

Xiaoye has experience in contract and commercial management services from pre-contractual negotiation to the post-contractual phase, with a particular emphasis within the nuclear sector.  She has delivered projects across a wide range of construction sectors, including industrial, marine, power plants, nuclear, and oil and gas.

Xiaoye specialises in quantifying prolongation costs, disruption, and variations on complex construction projects. She has expertise in analysing large volumes of data to identify patterns, gaps, and inconsistencies and preparing alternative scenario analyses to assess risks.

Xiaoye holds a master’s degree in both construction law and arbitration and finance. She holds an advanced professional award in expert witness evidence and is a member of the Chartered Institute of Arbitrators.

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