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Institute of Construction Claims Practitioners

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Engineer & Strategic Lawyer Advice: Best of both worlds

Construction Lawyers Darwin

Qualified Construction Experts who developed 100s of projects before coming into the law.

Baker Merz Construction Lawyers is a Quantity Surveying and Law Practice regulated by the Law Society and the Royal Institution of Chartered SurveyorsOur Darwin and Katherine clients choose our services because of our first-hand construction expertise as engineers, quantity surveyors, and contract managers (we are MCIBSE, C Eng, MRICS, MAIPM). These credentials guarantee that we will fully understand your situation, develop your cost or delay claim in-house, and select the most appropriate legal strategy to deliver results quickly and efficiently.

We Are Dual Qualified Engineers & Lawyers

Our specialised services include

Schedule analysis, prepare variations/claims for Cost & EoTs.
Provision of specialist procurement and contract administration resources to contractors during the delivery phase.
Contracts and Ts and Cs for procurement of long-lead items, fabrication and modularization, transport and installation.
Identify counterclaims and apply liquidated damages.
Insurance claims for design liability, performance below specification, incomplete works and re-work.
Draft payment claims or payment schedules and follow through in the adjudication process.
CCPM Delay Analysis

We can assist you with

Contract Reviews and Contract Analysis

Contract Reviews and
Contract Analysis

Our engineering expertise and on-site construction experience allows us to interpret, analyse and provide contract recommendations across different areas such as rights, liabilities, duties, and scope under Australian Standard Contracts (AS4000 and AS2124 Series), Australian Building Industry Contracts (ABIC), Master Builders Association (MBA), NT Security of Payments Act compliance as well as FIDIC, JCT & NEC4 standard contracts.
We provide pre-contract audits to identify standard terms and conditions and suggest amendments that transfer or re-assign high or unnecessary risks.
A well-written contract minimises risks. Before you sign any agreement, we will make sure that it is in your best interests and that you understand your exposure.
BIFA, QBCC Adjudication  Dispute Management

NT Adjudication and 
Dispute Management

We conduct a thorough contract analysis identifying the key terms and conditions in the contract. We review the drawings, technical specifications and site records to determine the cause, effect and merit of any claim.

Our written claims consist of plain English narratives, relevant cost and CPM delay analyses and referenced evidence files.

Before we refer the matter to adjudication, we will also determine the need for affidavits and expert reports to ensure that claims are able to withstand any scrutiny.

We are experienced acting for our clients in formal and informal dispute proceedings, and regularly brief counsels and barristers.

We will guide you through the legal process, and work towards a resolution of your dispute in the shortest possible time.

Delay, Disruption, Acceleration  Critical Path Delay Analysis

Claims for Delay, Disruption, Acceleration And Critical Path Analysis

We offer in-house planning and scheduling services. When delays do occur, we analyse the baseline schedule and progress updates to develop prospective and retrospective windows and time-impact analysis.

We determine delays, concurrent delays, apportionment, and liability.

We calculate labor and productivity rates using earned values or measured mile methods to determine the exact quantum of disruption claims.

Our claim documents present delay and disruption data in particularised and auditable format.

We also prepare acceleration claims, evaluate merit, quantum and entitlement to an EoT claim and provide Third Party Independent Reports to help our clients understand the strengths and weakness of their position.

Contract Management and Financial Recovery

Contract Management and Financial Recovery 

It is common knowledge that the root causes of troubled projects plagued by delays and cost overruns tend to be centred in incomplete project planning, inadequate schedule tracking and poor contract and financial control.

We combine our legal, engineering, planning and quantity surveying capabilities to help our clients devise all-encompassing project development procurement and contracting strategies to significantly de-risk any project. We typically manage the resolution of claims independently. This frees up the hands and allows the Contracts Management and Construction Teams to concentrate on their primary objective of delivering the project.

The advantages of this approach is a positive cashflow from the start and lower overall project administration expenditure. All of our lawyers are construction experts in their own right, no time is lost in understanding the issues affecting cost schedule or scope issues internally with the Project Team and communicating them to the Client.

Project Development Strategies International Experience

Project Development Strategies
International Experience

We help developers identify suitable partners that lead to teaming agreements and the setting up of successful joint ventures.

We prepared winning proposals developing economic cases required by Financial Institutions that enabled our clients to obtain finance for their projects in Australia and Overseas and assisted with project structuring begining from early Desktop studies to PFS, FS helping select the right type of contract (D&C, EPC, EPCM, Turnley, etc).

We then assist run the ECI phase (if required), obtain planning and authority approvals and prepare the required Teaming Agreements, NDAs, EOIs, RFTs and drafting of contracts, including head contracts, subcontracts, consulting contracts and supplier agreements.

We also help with contract reviews, including preparing tender qualifications, negotiating final contracts and drafting any required amendments.

Insurance claims

Insurance claims

Fast-track projects leave a trail of defects, some deep underground where they are impossible to rectify.

We provide technical and legal advise on the treatment of rectifiable and un-rectifiable defects, insurance, owner or contractor self-insurance, and even decennial insurance.

We acted on major insurance claims, advised self-insured clients, government bodies and statutory authorities. Our team developed the diverse skills required to cover all aspects of insurance advice and insurance claims management.

Our expertise includes policy interpretation and drafting, advising on policy, indemnity and subrogation issues, conducting recovery action and representing clients in front of insurers.

We Act in the following Industry Sectors

Road Bridges Overpasses & Detours

Infrastructure, Roads, Bridges

We acted on PI Claims for design errors, omissions and lack of coordination. We also acted on claims for latent conditions, unforeseen utilities, additional detours, EoTs, disruption and constructive acceleration.

We also provided Contract Administration services, including review, negotiation and closing out of outstanding subcontractor and Head Contract variations for various Defence projects in the NT.

Electrical Windfarms & Solar

Electrical, Windfarms, & Solar

Our Darwin Principal is an Electrical Engineer. We provided strategic engineering advise to deal with AEMO requirements helping determine the technical case (load flow and harmonics analysis). We prepared Delay and Disruption and Liquidated Damages claims.

We also acted on disputes for cashing in of bank guarantees for late performance, treatment of Force Majeure events, and establishing delay compensation entitlements managing extensive arbitration proceedings.

Process Plants

Process Plants

We were engaged in providing Contract Management Services for a contractor developing a bottling plant and office facilities. The Project featured water treatment plants (drinking and wastewater), bottling plant equipment, storage, and managing raw materials and finished product conveyors to the truck bay.

We also worked for a major Australian manufacturer of biscuits, building a distribution plant that included storage conveyors and product distribution to truck loading systems.



We assisted clients to form Joint Venture agreements to complete feasibility studies to bankable quality, develop and ECI and produce an overall project delivery strategy.

We drafted the MOUs between the different members of the JV, assisted with the separation of scope and delineation of battery limits for each member, and prepared procurement and transportation contracts for the sourcing of overseas equipment and modules, arranging freight and transport to site and insurances.

Office Buildings

Office Buildings

Over 20-years experience developing landmark buildings such as the Star City Casino with carpark, offices, hotel and apartment towers and Lyric and Show Theatres, the Chiffley Tower building, Manly RSL Club pool complex, Cronulla Shark’s Stadium, and residential estates.

We specialise in MEP and F Claims.

Oil & Gas

Oil & Gas

We acted on offshore oil and gas production platforms, subsea pipelines, onshore gas-conversion refinery projects, fuel gas areas, pump houses, Steam Turbine Generators (STG) area and Power Plants, gas wellhead skids, crude units, fluid catalytic crackers, light products plants, polymerization plants, amine plants, sulphur plants, and impurities treatment plants.



We prepared claims for unsuitable ground conditions, latent conditions, unforeseen utilities, cracks and tears on the surface layer and slippage of asphalt due to incorrect sub-base or compaction. Claims for wrongful termination of the contract, uninducted and unlicensed personnel, use of faulty and unapproved equipment, and defence of unmeritorious claims.

Heavy Rail, Metro, & Light Rail

From coal and iron ore loaders and unloaders, transport and port storage agreements, to TVM tunnelling, underground and overhead track to underground, on-ground and elevated stations, with retail sections, maintenance facilities, ticketing and operations and maintenance contracts. We assist clients with all authority approvals.
Smelters Steel Alumina Gold

Smelters, Steel, Alumina, Gold

We developed and administered contracts for alumina smelters and carbon bake facilities in Gladstone, bauxite mining in Gove and iron ore mining and processing in the Pilbara. We have an impeccable record in assisting our clients with development contracts, crown land grants and project development in general.

What our clients say about us

“I thought I was losing my business... thank you.”

Ben Hunter,
Bear Claw Civil

“They had a building full of lawyers against just the two of us. We couldn’t have done it without your technical and construction knowledge”

Dr Armond Habibi
General Counsel

“I am extremely grateful
for your professional assistance in this matter. Four different law firms and no one has taught us about these procedures before, thank you.”

Jessica Dale,
Superior Kerb & Concreting

Construction Lawyers Darwin

When you need Lawyers who truly understand Construction

What we do....

We aim to assist Developers, Builders, Contractors, Corporations, and Local Authorities by using our 30-years plus of experience in the construction industry. We acted as Design Engineers, Estimators, Schedulers, Contract Administrators, and Project Managers before coming into the law. We know from first-hand experience what is needed to prepare and administer contracts that combine Ts & Cs, technical specifications, drawings and commercial terms. We also prepared variations and managed the claim process and led the resolution of construction disputes that required a high level of technical, scheduling and construction knowledge when based on site.

As Engineering, Construction, and Law Matter Experts, we can:
Help you identify the merits of your claim.
Determine your rights and entitlements under the contract.
Value your claim and determine the length of an EoT.
Prepare fully substantiated Payment Claims, Payment Schedules, Adjudication submissions and attend Court on your behalf.

Construction Lawyers Darwin is here to save you time and money. You do not need to engage a law firm who needs assistance from a ‘a team of construction experts’, WE ARE construction experts that developed 100’s of projects and learnt what it means to be managing contracts on-site before we became lawyers.


“We understand that you want to maintain a cordial relationship with your client... but you also need to get paid. We help by developing soft approaches to dispute resolution before taking any adversarial steps.” 

Why engage us?

Over 50% of our NT clients settle their disputes even before legal action commences. This is because we prepare fully substantiated cost and delay claims that deal with defects, variations, valuation, disruption and payment disputes on their projects with a solid contractual/legal argument that leads to amicable commercial negotiations and early settlement. With 30 years of experience participating in design engineering teams and on-site construction for leading companies such as CPB, Lend Lease, NOVA NACAP, Szitler, Halicos, C&R, Kolsen, ACG, Haz Elec, Espec, Diggamen, etc. we guarantee our complete understanding of the issues that arise on NT construction sites and understand the perspectives of all participants and stakeholders involved in a dispute - we likely already dealt with a dispute involving similar circumstances to what brought you to this website. Why Choose us?
  1. Fast results at low cost: Our team possesses a unique combination of legal expertise, engineering, planning, delay analysis and project costing knowledge.  This multidisciplinary knowledge base sets us apart and allows us to offer comprehensive solutions that align with the technical intricacies of construction projects, reducing the time we need to spend on your case, your legal costs and the time it takes to resolve your dispute.
  2. Regulated by RICS: We do not need to engage construction experts, we are the experts. We are the only law firm in Australia regulated by the Royal Institution of Chartered Surveyors (RICS). This prestigious accreditation demonstrates our contracts/planning /costing knowledge and commitment to upholding the construction industry's highest professional and ethical standards.
  3. Tailored Solutions:  Whether you are a contractor, developer, supplier, or consultant, we have the technical and commercial expertise to navigate the legal challenges you may encounter. We understand that every construction project is unique and pride ourselves on delivering tailored legal solutions that meet your needs.
  4. Proactive Approach:  We strive to identify and defuse potential issues before they escalate. Our attention to detail and thorough understanding of industry regulations ensure you receive comprehensive legal guidance at every stage of your project.
  5. Client-Centred Service: Our clients are at the heart of everything we do. We prioritize open communication, responsiveness, and a collaborative approach to ensure that we fully understand your goals and concerns. Our team is dedicated to providing you with personalized attention and guidance so that you can confidently make informed decisions.
  6. Industry Connections: Over the years, we have built strong relationships with key stakeholders in the construction industry, including contractors, developers, architects, and engineers on every discipline. Our extensive network allows us to connect you with trusted professionals who can support your success.
Our specialised offering consists of:
Contract review and formation services, strategy and administration 
Planning, Scheduling, EoT, Prolongation, Disruption and Acceleration Claims
Payment Claims and Schedules - Adjudication Applications & Responses
Dispute management: Expert determination, arbitration and litigation

Why engage a Law Firm that needs to be assisted by a “team of experts” when you have access to our Construction Experts that developed 100s of projects before coming into the law.

Ask Us Any Question, It Costs Nothing To Know Where You Stand


  • Q1

    Our variations are being rejected and we are facing a huge loss. Is there something we can do?

    "We have been very busy doing really good quality work and breaking over backwards to help the main contractor complete the project; we thought we would be paid for all our variations and for all the extra work which are just and fair. However, the main contractor is now enforcing the contract to the letter and rejecting all of our variations on the basis that we did not submit the appropriate notices in the required form and in the time specified in the contract. Is there something we can do?... if the variations are not approved we will incur a huge loss…"

    A: 90% of our contractor clients come to see us asking this very same question. The short answer is that it is unlikely that something cannot be done. Although contracts specify what notice needs to be provided, in which form, under which clause, whom it needs to be sent to, and within which timeframe; either these are not strictly followed by the parties during the execution of the contract (until a dispute arises), and this creates a situation where it can be argued that the contract has been changed ‘by conduct’ and the main contractor is estopped from enforcing the contract to the letter.

    In other cases where notification is required, the contract does not specify what constitutes notification, for example, does an email or minutes of meetings suffice or does it need to be sent formally to a nominated person? The bottom line is that it is common the knowledge that the courts will enforce all pre-conditions to a valid claim in the contract that you have agreed to; however, if you can demonstrate that you have somehow provided notice, there is a good chance that you will overcome the bars to recovery.

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  • Q2

    How do you overcome a time-bar, can you give me an example?

    A: A subcontractor was building a new road, and during excavation discovered a pipe which was classed as an ‘unforeseen utility’. The main contractor complained that the subcontractor took over a month to notify the main contractor of the find, advise how long it would take to relocate the utility and estimate the approximate cost. The main contractor time-barred the claim because the contract provided that a notice of variation had to be given within seven days.

    We were able to demonstrate that the subcontractor sent an email so the main contractor on the day of the find, that it took about three weeks to identify the owner of the utility, and that it took another four days to determine whether it could be concrete encased and left in place or had to be re-routed. The situation was one of impossibility of performance with strict notification requirements, and the earliest time that the subcontractor was in a position to advise the main contractor of the impact on time and cost of relocating the utility was a month after the find. The variation was paid.

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  • Q3

    What do you think is the best course of action to avoid these situations?

    A: Talk to us early. The first thing we do for our regular customers when they enter into a new contract is to create a flow chart which includes the steps that need to be taken to submit a valid variation. These include notification requirements, number of days before it is time-barred, decision boxes with ‘complied’ or ‘not complied’, references to the relevant clauses in the contract, and what to do in case of dispute.

    The flowchart is accompanied with a number of standard template-letters, which address the requirements in the contract for a valid notification. We also provide a delay-log spreadsheet and give you instructions as to how to maintain appropriate records.This ready-made package is easy to implement by any site team and preserves your entitlements to a claim. The documents contain very straightforward and strong disclaimers that protect your rights, i.e.

    At the date of submitting this Notice:

    1. The delay event has a duration that is not reasonably ascertainable by the Subcontractor but is otherwise continuing in nature.
    2. The delay event will have an impact on the Contractor’s Critical Path in the approved Construction Program
    3. The delay will prevent the Subcontractor from achieving Practical Completion in accordance with the current program.
    4. The delay is beyond the Subcontractor’s ability to reasonably control and cannot otherwise be avoided by the Subcontractor; and
    5. Is not the result of an act or omission directly or indirectly caused or contributed to by the failure of the Subcontractor.
    Delay Claim Flowchart

    As soon as we implemented the package a PM wrote: “Good outcome. With our new reporting system I feel we should be able to go through the motions until the end when the Director will have a negotiation on his hands. First reporting will be compiled and submitted this week.”

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  • Q4

    Are we going to antagonise the main contractor if we look "contractual"?

    "If the main contractor gets the impression that we are 'too contractual', they are not going to consider us for their next project."

    A: This is an urban myth. It is an inaccurate perception of how subcontractors believe they will be treated by the clients they work for. Yes, warnings are given on-site and strong correspondence is usually issued to discourage subcontractors from becoming 'variation-happy', but as a veteran managers employed by many tier-one companies who attended many a board meeting, we can attest that a contractor’s listing in the tender for another job depends entirely on performance in delivering the works under the contract in the allocated period of time and to the expected quality and price, and not in the efforts contractors spent to administer the contract to the letter and secure their just entitlements. In fact, it is common knowledge amongst Directors who make tough commercial decisions, that only subcontractors who secure their entitlements can survive in this industry - they expect you to be tough, respect you for it, and in spite of all the posturing and aggression they are happy to see you grow with them.

    We can also attest to the fact that many subcontractors who are afraid to raise a variation fearing they are not going to be looked at favourably, lose the chance to be appropriately compensated when the event that gave rise to the variation was (perhaps unknown to them) a client’s risk. We witnessed many such unfortunate events where representing the head contractor, we would have written a back-to-back variation to the client to ensure our subcontractors were compensated appropriately. Most head contractors look after their subcontractors and keep a good and cordial professional relationship with them.

    Finally, if it is your fault, and you are delaying the project and losing you and them money, expect no mercy. But to talk to us about what we can do to help you recover or mitigate your loss.

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  • Q5

    The main contractor has been delayed, and these delays (which are not our fault) have delayed our own work.

    The main contractor is executing the project on a lump sum basis and is rejecting all of our requests for extensions of time and additional cost because of our alleged lack of compliance with notification requirements. Is there something we can do?"

    A: When a main contractor is executing a lump-sum contract that has gone wrong (for them) for whatever reason, it will naturally attempt to ‘share the pain’ to avoid a loss. Those are the types of contacts where subcontractors need to be extra-careful in their day-to-day administration. Once we brief the site administration team with the contracts administration flow chart described earlier and provide the letter templates, we can assist in drafting all correspondence to the main contractor.

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  • Q6

    We priced a variation using the Schedule of Rates in the contract, but we forgot to add the 10% overhead and profit.

    We re-submitted the (amended) variation, but the client now says that day variation was lump-sum, and that since he already paid it, we are not entitled to amend it."

    A: The determination of the value of a variations in most contracts is typically assessed in a cascading regime where the first step is for the parties to try to agree the value of their variation, the second step is to determine the value of the variation using the rates in the contract, and if none of these two steps is available (generally because the parties dispute the value of the variation) contracts typically provide that main contractors have to determine ‘fair value’.

    In this case, where a variation has been priced in accordance with the schedule of rates in the contract, and the contract provides a formula to calculate the value and the party that made a mistake is entitled to correct the arithmetical error.

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  • Q7

    We entered into a schedule of rates-based contract for the main works on a major highway and it appears we made a mistake... can you help us?

    "We entered into a schedule of rates-based contract for the main works on a major highway, which included a detailed list of rates for detours, but we did not realize that a contract document specified that the permanent works are paid on a schedule of rates, but all temporary works were paid on a lump sum basis and were not re-measurable. The project needed eight detours, but we priced only the six in the schedule of rates. Can we claim a variation for the other two? Why were the rates for detours in the schedule of rates if these were not re-measurable?"

    A: It is often the case that the design of a project and the procurement and contracting strategy starts life as a 100% schedule of rates contract but changes to a lump sum contract whole or in part. Clients do this to transfer risk to the subcontractor and bring certainty to their final cost of the project.

    This appears to be the case in this example, and the schedule of rates for components of the detours was left unchanged after the change in strategy to transfer the risk for detours to the subcontractor had taken place. This obviously confused the subcontractor’s estimating team who priced the rates and failed to interpret the change in the contract terms correctly.

    However, in this case, the order of hierarchy of documents in the contract dictated that the schedule rates (which still had a statement dictating that all detours were re-measurable), had higher hierarchy than the standard conditions where the detours had been changed from re-measurable to lump-sum. We were able to demonstrate that regardless of what the standard conditions said in relation to the detours being lump-sum, these were specified as re-measurable in a document of higher hierarchy. The courts interpret the contract against the drafter, and we were able to assist the contractor and recover the costs for all eight detours.

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  • Q8

    We are a small subcontracting company and we haven't been paid for all the work we completed for months. We need to be paid, what can we do?

    A: This short-question typically arises when month after month Payment Schedules have lower value than Progress (Payment) Claims. You may try sending payment reminders and claiming the unpaid amounts on subsequent Progress Claims. If it comes to the point when finances are tight and you need to do something more, Letters of Demand certainly do not work (in construction) and you have to instead consider the dispute resolution provisions in the contract, adjudication under the Building Industry Fairness (Security of Payment) Act 2017 (SOPA), or take your claim to the courts.

    The NT Security of Payments Act is our recommended first step. The NT SOP Act is designed to provide effective, efficient, and fair processes for securing of progress payments. Also bear in mind that you do not have to follow the dispute resolution process in the contract because NT SOP Act is the law. We actually recommend going straight to adjudication under the Act and then come back and use the dispute resolution processes in the contract to increase your overall recovery if adjudication was not wholly successful.

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  • Q9

    We can see from the latest correspondence that we are about to enter into a serious dispute, how can we prepare?

    A: The signs are always clear in the notices, Payment Claims or Schedules, minutes of meeting, discussions and general correspondence. You need to keep good site diaries, get the other side to sign them every day, track and update your schedule and issue it every month.

    If you are a Main Contractor, do not elevate the discord by rejecting and disputing ‘everything’, claim or approve what is fair and limit your team to disputing what is not.

    Get a contract review, even the more seasoned contract or commercial managers misinterpret the contract. We just reviewed entitlements for a company who has a panel agreement with a government organisation who greatly misunderstood the method of payment and determination of the prices in the schedule for banded rates, i.e. the quantities were measured ‘on completion’ of a work order, and if the variations put the entire works in a lower band, the final value of the entire contract was re-calculated and adjusted. The contract’s manager was under the impression that completion of an item of work in the work order instead of all items in the entire work order triggered the setting of the applicable rates in the band.

    Above all, do not make it personal. It is unfortunate when one gets to see a huge amount of money spent on legal fees, which at times are well above the value of the claim, because at the heart of the dispute two people chose to not get along.

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  • Q10

    Communications broke down and we need to make a claim. Can you help us?

    A: Perhaps. We are “true” ‘construction lawyers’. All lawyers are allowed to adopt the moniker ‘construction lawyer’, even if they know nothing about actual construction. These ‘construction lawyer’ create unrealistic expectations (and further loss) for their clients by pursuing claims while oblivious to the fact the claims they are pursuing are invalid and unwinnable.

    We wrote on 18 September 2021 the below in reply to a so-called ‘construction lawyer’, who is probably unaware of the fact she is pursuing an unwinnable claim. All the red flags for you as a client are there, her claim evolved from ‘unlawful termination’ to ‘my client did not read the contract’, and even includes ‘we acknowledge the claim contains errors and some the personnel in the claim did not attend the site’:

    “The contract your client signed without reading is legally binding. The costs claimed are both unsubstantiated and unreasonable. The excuse that the alternative 25 Ton excavator provided by your client on the night was accepted by our Client is just nonsense. Our Client had no choice, it either accepted the alternative excavator your client turned up with or no work would be carried out in a night where detours and traffic police were in place waiting for your client to excavate the stormwater trench, which he was unable to excavate anyway because (a) the alternative 25 Ton excavator was too big and (b) his personnel were not inducted. Your client carried out no work at all, and my Client obtained no benefit that he may be liable to pay for even in contract, in tort or in equity; on the contrary, my client was embarrassed by your client’s lack of professionalism and breach of trust relating the agreed 14 Ton excavator, lack of inductions of personnel and had to take remedial action at its own expense”.

    We can explain your case quickly and inexpensively because we are engineers and builders too, we rarely ever need to approach ‘experts’. We can review the technical merits of any claim, and because ‘we do really know construction’, we can see if your delay claim has merit because we track progress ourselves for many clients and use P6. We do advise our clients that their claim may not be meritorious before they spend any money on us (legal fees) and/or in litigation. We wrote this the next day after dealing with the 25 Ton excavator saga:

    “We reviewed your invoice No 031, the contract, and the recommendations of the Royal Institute of Quantity Surveyors (RICS) in relation to the rules of measurement of fill material and common practice in relation to your dispute, and regret to inform you that it is unlikely that you will obtain a favorable outcome either in adjudication or the courts. Both the Contract, and RICS Rules of measurement for earthworks tell us that the quantities from the drawings are (a) bulk before excavating or (b) net measuring the void to be filled. This means that in both cases the contract and the RICS rules tell us that payment is on net quantities, or in situ and compacted and without the additional bulking factor claimed in Invoice No 031.”

    But when we take on a matter we are typically hugely successful. Below is an excerpt of an adjudication decision issued in September 2021. We prepared the adjudication application, payment claim 11, the accompanying chronology, a delay analysis and cost breakdown fully in-house.

    “Accordingly, I have decided the correct valuation of delay damages incurred due to the suspension is under clause 34.4. The Claimant has provided its detailed breakdown of the costs of suspension in payment claim 11. The Respondent has only rejected the Claimant’s entitlement to delay damages and has not challenged the quantum of that claim. I have compared the costs to the provisions of the Contract and, prima-facie, the costs are the type of cost that I would expect claimed. Accordingly, as detailed above, I find in favour of the Claimant and value the work at $186,900.85 including GST. In the context that I decided above that the Claimant is entitled to an extension of time, the Respondent’s claim for liquidated damages must fail.”

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  • Q11

    Can you help us with an acceleration proposal or constructive acceleration claim?

    A: Most certainly. We typically propose that acceleration proposals be instructed as a direction to accelerate the work under the contract and paid as a lump-sum variation with amounts included on payment claims made on agreed dates rather than measure of completed works, i.e.September (30%), October (30%), November (30%) and December (10%).

    Below is a snapshot of a simplified offer we completed for a client in September 2021:

    snapshot of a simplified offer we completed for a client in September 2021

    The proposal included an acceleration schedule for a remote site in the NT, an implementation plan and a list of deliverables. The financial proposal included incentive payments for personnel for extended swings, project completion payments, and wage increases, most of which we suggested. Of course, when acceleration is implemented, production rates decrease sharply and this is taken into account in the calculation of costs and when preparing the schedule.

    This same process of analysis is followed when constructive acceleration has been instructed by clients.

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  • Q12

    How are delays classified?

    A: Independent or Parallel Delays

    Parallel delays are delays that are the sole responsibility of one party regardless of whether they affect the critical path, they should not be confused with concurrent delays where the responsibility for each delay rests with a different party.

    Serial or Sequential Delays

    Delays that fall on the same section of the critical path and one delay impacts the other, i.e. design delays where the contractor delays the submission of shop drawings and the Engineers take longer than allowed in approving.

    Concurrent Delays

    A true concurrent delay is the occurrence of two or more delay events at the same time, one a Client’s risk and the other a Contractor risk, and the effects of which impact the critical path at the same time.

    Pacing Delays

    The Contractor delays the works deliberately due to the Client’s delays in critical areas. This is useful as a mitigation measure of the Client’s loss and is made with the purpose of keeping pace with the Client’s revised schedule.

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  • Q13

    Which delay analysis method is the best?

    A: It depends on where you are in the timeline for execution of the project and what documentation you have gathered. Separate delay events into excusable and non-excusable, compensable and non-compensable and then analyse the data and its effect on the schedule.

    We use Impact as Planned Analysis for prospective delays when we are aware that the project will be delayed and the project is still in execution. We use this method to commence claiming delay costs early and progressively each month when we know that (a) the end date has already slipped and (b) the client has accepted this fact and has revised his overall schedule. We cannot use this method if the client does not recognise or ignores the delay has occurred (at least on paper) so we request EoTs and claim against them.

    As-Planned vs As-built is the most effective method to substantiate a claim because we can compare what we planned at the outset vs what occurred during construction. It leads to robust claims, except that the claim can only be submitted at the end of the project. It is a great tool for delays that occurred at the last possible minute but ineffective for projects of long duration where claims need to be lodged progressively as EoTs and cost variations with each progress claim.

    We view time slice and windows analysis as the only option for a poorly administered contract. In essence we are presented with schedules that were delayed by multiple events and since the contractor kept no data for each delay event, we say ‘in this time-period (the time slice or window), we were affected by each of these events, we were delayed by so long, and our cost is $$’.

    These claims end up creating a lot of debate as they are argued as a matter of opinion of the delay experts as to how the site and schedule data needs to be interpreted. Arbitrators and Judges have a hard time understanding the arguments from each side and typically, there is no hard evidence to substantiate the claim. Success depends on expert opinion rather than hard data.

    Even meritorious claims are at times unsuccessful due to the lack of solid evidence. Statistics prove that less than 20% of these claims are successful. Yet, given that some of our clients come to us late, well after the delay events occurred and the data needed is unavailable, we do offer windows analysis and produce the more robust analyses linked to pricing, manpower, procurement and equipment.

    The collapsed as-built is a complex method, it cannot be used prospectively, it is therefore rarely used.

    Method of Analysis Book an appointment
  • Q14

    But my planner says that windows analysis is best. Is he right?

    A: Definitely not. In our experience most planners are accustomed to working on one piece of software and using one delay analysis method. He who works on Primavera loathes Ms Project and vice versa, and those who are accustomed to analysing delays using time slice or windows analysis will not have a bar when asked to develop an as planned vs as built schedule.

    When it comes to windows analysis, the problem is that windows have to be analyzed consecutively, and it is only after a window is cleared and the corresponding delay established that the next window can be analysed. If you are not able to supply delay breakdowns, each ‘guessed’ delay in a window builds up on the errors of the previous one, and the errors are compounded exponentially by the time you are on the sixth window. Your claim becomes a (poorly substantiated) global claim. We refuted quite a few when defending, showing that they had no basis. In simple terms, global claims translate as ‘I did not keep any evidence, but I was delayed and I am losing money, so we might as well try’... hence the less than 20% success rate.

    When it comes to delay analysis we are engineers/planners who first decide the most appropriate method for presenting our case based on what evidence you have, and then we engage the appropriate planner with the required skills to develop a schedule analysis that will present your claim in the best light. If we have no choice but to present a global claim based on a windows analysis, rest assured that your chances of success will be much greater than 20%. We will be fair in our assessment of your chances when advising you, we prefer to not take on commissions where our chances are below 50% unless you want to use the analysis solely as a negotiating tool, our reputation and your repeat business is important to us.

    Book an appointment
  • Q15

    How is our claim going to be presented?

    A: We will prepare the normal P3, P6 or Ms Project analysis with 500 to 15000 activities so we can hand it over to an independent expert, but we will also prepare simple to comprehend graphs which represent the events and data so that non-experts can comprehend the issues and make informed commercial decisions:

    How is our claim going to be presented
    Projects Critical Path
    Power On 60-Month Completion
    Book an appointment
  • Q16

    CLD has great back-end experience, do you have any front-end experience?

    A: Absolutely, we produced finance-ready packages for board approval for many projects, complete with packaging, procurement and contracting strategies. Below are some of the slides we produced for Iron Road, where we approached the SA government, Port Authorities, completed a MOU with Thiess and Parsons Brinkerhoff for the development of the entire project:

    Iron Road Components
    Value Improving Practices
    Collaboration Document Control
    Iron Road TMM Oppurtunities Plant
    Australia Current Projects
    FS Fice Execution Phases
    PMC RPC and EPCCM Services
    Process Equipment Solutions
    Book an appointment
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Head Office Address: Construction Lawyers Darwin
1 Surcingle Drive,
Marlow Lagoon, NT 0830
Phone Number: 1300 710 864
Business Name: Construction Lawyers Darwin
Status: Registered
ABN: 40 650 782 317
Category: Law firm
Services: Security of Payments Act, Claims Preparation, CPM Delay Analysis, Construction Law
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Our aim is to bring clarity to Construction Disputes for Developer Builders, Contractors, and Corporations by using our 30-years plus of experience in the construction industry working as Design Engineers, Estimators, Schedulers, Contract Administrators, and Project Managers.

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