The design and construct procurement path changes the traditional sequence of work. It answers the Employers wants for a single-point of duty in an alleged effort to cut down hazards and overall costs. It is now normally used in many states and signifiers of contracts are widely available.
Design-Build is sometimes compared to the “ maestro builder ” attack, one of the oldest signifiers of building process. Comparing design-build to the traditional method of procurance, the writers of “ Design-Build Contracting Handbook ” noted that: “ from a historical position the alleged traditional attack is really a really recent construct, merely being in usage about 150 old ages. In contrast, the design-build construct — besides known as the “ maestro builder ” construct — as been reported as being in usage for over four millenary. ” ( Songer,1996 ) .
The disadvantage of the traditional procurance method had been identified in many studies. Harmonizing to Lathem Report ( 1994 ) , it stated that the traditional method has the job of adversarial and inefficient manner of making things and separation of the functions and duty of squad members. Harmonizing to the Construction Industry Review Committee Report ( 2001 ) stated that a high grade of atomization with an adversarial civilization and a contractual and confrontational civilization would be developed.
The alternate procurance method would be sought for work outing those jobs.
Describing “ Design and Build ” as a “ feasible alternate method ” , Songer and Molenaar ( 1996 ) concluded that there are a figure of advantages associated with Design and Build such as: cost nest eggs, improved constructability, clip nest eggs and claim decrease. From the Employer ‘s position, the individual point of duty is the most attractive benefit derived from the D ; A ; B procurance attack ( Chan 2000 ) .
With the support of instance surveies and quantitative informations, Hale et Al. ( 2009 ) pointed out the Design and Build is superior to the traditional procurance system hence recommended to utilize Design and Build attack in both public and private sectors. Levy ( 2006, p.197 ) even suggested that “ the design-build bringing system appears to be a perfect vehicle by which to prosecute sustainable or green edifice building ” .
Harmonizing to Chan and Chan ( 2004 ) , the completion clip as it relates to rush of a undertaking depended on the procurance method adopted for the undertaking. They attributed the slow hold observed in one of the undertakings to be due to the usage of the traditional procurance method. However, they recognize the possibility of other factors playing a function that it was noted as the undertaking who has suffered holds ; obtained better consequences in footings of cost compared those obtained through the method of design and construct method
The increasing the complexness of the undertaking, the Employer would be hesitated to how to cut down the clip for design and the clip for building. The Employer was willing to seek for the alternate method to cut down the clip of the design phase and the building clip and better the public presentation of the undertakings. There are many alternate procurance methods have been developed in recent old ages such as Novated Design and Build and Enhanced Design and Build. The traditional procurance method is non the lone pick for the Employer.
Design and physique is now one of the most often used procurance paths in building and it is a extremist going from the traditional design-bid-build method. The usage of design and physique is on the addition with many Employers comprehending it as supplying better value for money and giving rise to less differences than other procurement methods.
As per the studies of Royal Institution of Chartered Surveyors,2004, new procurance tendencies can be identified which may be associated with the roar period in building in the early portion of the decennary and it clearly shows that the Design and building has become the individual dominant method since the old study in 1995, it was the traditional methodUnder a design and construct contract the contractor assumes primary duty for the design of the development, in add-on to its traditional function to provide work and stuffs. The contractor engages the design advisers, or more normally, has the assignments of the design Consultants novated to him.
“ Design and physique is and agreement in which a edifice contractor enters into a contract with you to plan and build your new edifice. It is the simplest attack, as one house is responsible for bring forthing the edifice you want instead than this duty being divided amongst several houses, as is the instance with every other attack. ” ( Sarah Peace and John Bennett, How to utilize a design physique attack for a building undertaking, CLOB, P2 )
Masterman ( 1992 ) province that the term Design and Build has about been nem con interpreted and defined as being an agreement where one catching organisation takes exclusive duty, usually on a ball amount fixed monetary value footing, for the bespoke design and physique of a Employer ‘s undertaking. This contains three chief elements: the duty for design and physique, contractor ‘s reimbursement is by and large by agencies of a fixed monetary value ball amount and the undertaking is designed and built specifically to run into the Employers ‘ demands.
Harmonizing to David Chappell ( 1997 ) , Design and Build contracts place duty for both design and hard-on in the custodies of the contractor one point of duty for everything. In this system contractor will transport out two maps: design and concept.
In other definition, design and physique is an agreement where one organisation design and physique to the house order for the Employer to a individual fiscal dealing. The Chartered Institute of Building ( CIOB-1983 ) defines Design and Build as the procedure where the Employer trades straight with the contractor for the complete edifice and it is the contractor who is non merely responsible for but besides coordinates the separate design and physique procedure, including battle of the design squad who are, hence contractually linked with the contractor and non the Employer.
As the Design and Build defined, it is hence of import to uncover the strength or advantages of Design and Build as procurance system.
One of the outstanding characteristic of Design and Build is to supply a individual point duty. This is achieved by apportioning all design duty and liability to the contractor entirely. The proprietor may hold more design options to take from the several design builders who enter the stamp. Owner will be given to hold fluctuation of design thoughts together with the expected cost that was proposed based on his demands. Unlike traditional attack which merely appoint a individual unit of design squad to come out with the design thoughts, Design and Build will bring forth much more different design thoughts from the design builder who enter the stamp ( P. Chan et al.,1997 ) .
The proprietor ‘s administrative loads may be reduced because the procurance of design and physique services is consolidated into a individual choice procedure. After award of the Design and Build contract, the proprietor will non be required to pass clip and attempt coordinating and interceding between separated design and physique contracts. While the procedure does necessitate the proprietor to supply prudent inadvertence of the design and physique procedure, this duty is considerable less clip consuming and exposes the proprietor to far fewer hazards than the traditional attack ( P. Chan et al.. 1997 ; Dennis Turner, 1986 ).
In add-on to the individual point duty, cost and completion clip is house in the Design and Build procurance method. This means the Employer knows his entire fiscal committedness in the initial phase of the undertaking, provided he does non present any alterations throughout the undertaking.
The Design and Build entity is responsible for quality, budget, agenda, and public presentation of the completed installation. With the individual point of contact, Employers can concentrate on definition of demands and timely decision-making instead than on coordination between interior decorator and contractor. Besides, the Design and Build entity has entire duty for the finished merchandise and can non switch design mistakes of building defects to another party.
Therefore, it will probably to stop up with the expected or higher quality of end merchandise. Unlike Design and Build attack, traditional attack contracts rely on restrictive diction, adversarial audit and review demands and the legal system to achieve project quality ( Jeffrey L. Beard et al. , 2001 ) .
Cost has ever become the cardinal considerations impacting acceptance of Design and Build procurance method. Whilst undertaking clip is comparatively easy to construe and possible nest eggs clearly identified, undertaking cost is more equivocal and hence hard to measure. A outstanding consideration for the Employer, in any procurement signifier, is that concluding cost does non transcend the undertaking budget. In this regard, Design and Build surely presents a better opportunity of the Employer obtaining his completed edifice within budget. Jerry Adanison ( 2001 ) , explained that several fiscal considerations make Design and Build desirable. Private sector have implement Design and Build for fiscal grounds. Completing a undertaking rapidly can salvage Owners used to finance undertakings.
On the inquiry of cost, existent cost nest eggs can besides be made in Design and Build. Harmonizing to Mastermann ( 1992 ) , when utilizing this system, the initial an concluding costs are lower than when utilizing other methods of procurance because of lessened design costs, the integrating of the design and build elements and in built build ability of the elaborate design. Cost nest eggs may besides ensue in timesaving. The overall effects is decrease in the Employer ‘s funding charges, lesser consequence of rising prices and faster edifice operation, which, in a commercial context, produces an earlier return on the capital, invested, ( Frank 1998 ) .
The successful of the procurance method should carry through the demands of the employer. The aim of the Employer should be identified. Employer would necessitate the best design for their undertaking and run into his demand stated in the Employer ‘s demand. Time should be every bit fast as possible for the building period. The cost of the edifice should be every bit lower as to fulfill his demand. The Employer would prefer to minimise the contractual hazard to avoid the unneeded problem.
As clip is money, the continuance of building period of the undertaking is really of import. “ Time at big ” , the clip disbursement on the planning, building and development would impact the economic graduated table of the Employer. The Employer would seek for the shorter building period to gain for the greatest net income. The time- related cost point such as the cost of site office, human resources would increase as the continuance of the building period become longer. The early release the edifice, the greater net income for the Employer.
The quality of the craft and the quality of stuff is one of the chief concerns for the Employer in general. The quality of the edifice should run into the demand stated in the specification of the contract.
The development cost, the building cost and the operation cost are the concern of the Employer. They wholly affect the net income of the Employers. The building cost is the cost for the edifice building such as stuff cost, works cost, labour cost. The operation cost is the running cost for the edifice such as care cost, direction cost. The development cost is the land cost, building cost and other all outgo which has paid for the development.
One of the major ground for taking design and construct agreement is to profit from the good communicating that can happen between the design squad and the building squad ( Gould, 2003 ) . Many of the big design and physique companies specialize in peculiar countries and have developed a smooth flow between the design and build stages of the undertaking. This coaction allows the undertaking to be easy fast-tracked, cutting down on overall agenda for the undertaking.
Direct contact between the Employer and the contractor as provided a Design and Build system lines of communicating and enables the contractor to accommodate more quickly to the Employer ‘s demands. Integration and encouraged inherently within the system ( Griffith, 1989 ) .
The Employer and contractor will pass on closely during the procedure of the undertaking. Communication between them will get down at the get downing phase of the undertaking. Therefore, in design and construct it provides the Employer and contractor an chance to interact more frequently and more straight than traditional contract. In general, this agreement allows easier incorporation of alterations due to scope or anticipate conditions since their coordination occurs within the same contractual entity. The Employer is less to a great extent involved and sits outside the direct twenty-four hours to twenty-four hours communicating between interior decorator and builder. This keeps proprietor staffing to a lower limit and puts the full duty for good communicating and job resolution.
The Design and Build contract transportation more hazards to the contractor than any other building contract. Among a assortment of hazards, a contractor normally takes on many bad hazards. Hazards that can change in incidence between the parties as they wish.
Bad hazards can be within or out with the control of a contractor ( Turner 1990 ) . However, the suitableness of a undertaking to the Design and construct attack must be carefully undertaken by guaranting that the contractor is able, willing and has relevant experiences to command the hazard satisfactorily, otherwise they may go through these back to the Employer ( Hogg & A ; Morledge, 1995 )
Large and complex undertakings take longer building continuances. It is hard to utilize the design and construct procurance in such undertakings. Because it is unjust for the contractor to take hazard on the stuff rising prices on the ball amount fixed monetary value contract. Therefore, the size and the complexness of the undertaking should be considered.
Harmonizing to Sarah Peace and John Bennett, it is really of import for the choice of the contactor to treat the design and physique undertaking. From the figure shown that the design and physique undertaking in increasing because of the authorities is willing to utilize Design and Build procurance method. As the following design and construct procurement method by the Government, there is the system for choice of the Contractor as per the “ Procurement Guide Lines ”
The choosing the Contractor is non merely concern the stamp monetary value, but besides the quality Time, Contractor ‘s fiscal position, possible contractor with good repute, manpower good record for the old undertaking as per the pre-qualification taging strategy of National procurance usher lines. Therefore, the contractor who meets the Employer ‘s demand for clip and quality at the best monetary value would be selected.
The Employer should to the full province their demand, thought and specification of the craft in the Employer ‘s demand. The more item of the Employer ‘s demand is, the fewer differences will be occurred in the ulterior phase. The design of the edifice and the criterion of the edifice is harmonizing to the Employer ‘s demand. The Employer should understand what he needs in the edifice and the thought should be to the full explained in the Employer ‘s demand.
The proposal responded from the Contractor should be carefully checked by the Employer ‘s representative. Once the Employer accepts the proposal from the Contractor, the contract will be formed between them. The design of the edifice and the building method will non be changed which stated in the contractor ‘s proposal. The alterations by the Employer would do the great sum of the fluctuation. Therefore, the recognized proposal should be to the full understand by the Employer which is suited to his thoughts.
The deductions of the Employer should develop a thorough undertaking program in which the range of work is clearly defined, and the contractor should understand and perpetrate to the accomplishment of undertaking aims. The contractor ‘s capableness and experience in pull offing Design and Build undertaking is critical to project success and undertaking squad members ‘ committedness toward the undertaking ends is besides of import.
Songer and Molenaar ( 1997 ) identified 15 features of successful Design and Build. They found that the top five of import undertaking features were chiseled range, shared apprehension of range, proprietor building edification, equal proprietor staffing, and set up budget.
Although the Design and Build undertakings are expected to present the undertaking faster and cheaper every bit compared to the traditional command and build undertakings, non all the Design and Build undertakings can truly carry through it. Many empirical surveies have been conducted to analyze the impact of assorted undertaking success factors such as the survey of factors for a successful public sector Design and Build undertakings by Songer and Molenaar ( 1997 ) , survey on designers ‘ and builders ‘ positions on Design and Build procurance method in Hong Kong by Mo and Ng ( 1997 ) and many others ( Albert P.C. Chan et al. , 2001 ) .
Consequently Chan et al. , ( 2001 ) has developed a series factors lending to the success of Design and Build undertakings. These factors are the responsibilities, duties and capablenesss of different undertaking participants including end-users, contractor, designer and design advisers in Design and Build undertakings.
The purpose of this chapter is to show an overview of the literature published on the topic of ‘selecting the procurance method from the current building industry ‘ ; The aim of the Employer in footings of clip, cost, quality and hazard would be found out besides. And the factor that may find the successful of the procurance method would be identified. They are the undertaking characteristic, the contractor choice and the employer ‘s demand.
In general, it can be summarized that Design and Build provides individual point duty for the whole design and physique. Contractors, who are responsible for the execution of the undertaking, have power to command all over the undertakings. This nonetheless does non discourage the engagement of the Employer. The Employer ‘s demand and demands are ever been taken into consideration, which this consequently presents singularity of the system.
In decision, it is indispensable that whoever truly want to secure Design and Build method need a thorough apprehension of the types and features of that sort of procurance. Therefore, benefits of Design and Build can be exploited. Many surveies besides showed that the feature of Design and Build that make Design and Build different from other procurance system in offering individual point duty, fixed clip and money, communicating, allotment of hazards and others.
Geting success in Design and Build undertakings enables an confidence of acquiring the undertaking completed at the right clip and within allocated budget. The Design and Build procurance system has better clip public presentation and cost benefits, which are basically what the end-users are concerned about. This research can be a key to measuring the public presentation degree of Design and Build undertakings, and the undertaking participants can larn about the of import factors for puting up an effectual direction system to turn Design and Build undertakings with first-class public presentation.