Management of construction Essay

Introduction

Management of building undertakings is vitally of import due to its direct influence on economic system of a state and safety of edifice users. There is a important illustration of wide-scaled building in Saudi Arabia where well-planned composite of building direction allowed constructing an oasis in the developing desert ( BBC 2009 ) . On the other manus, there are facts when mistakes in application of building criterions and safety ordinances led to catastrophic prostration. For case, 1000s of school kids died in the temblor that destroyed around 7,000 schoolrooms in Chinese state ( Weiwei 2008 ) . In this undertaking I will research the field of direction in building undertakings.

The undertaking divided into four subdivisions. Each subdivision trades with a specific building phase and aimed to give basic cognition about specific methods and techniques of direction that make building more effectual. Furthermore, I highlighted chief footings and processs that usually have a topographic point in the field of building. In add-on, in the undertaking I described possible issues and hazards and ways of its declaration.

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2 Overview to direction of building undertakings

The direction is a important portion of the building undertakings which helps to form and convey together stuffs, human and fiscal resources, operations such as planning, planing and building. The chief intent of direction is to finish the building procedure in clip and cost bounds. By “ building ” will be considered an act of making, edifice of assortment of constructions such as lodging, municipal and industrial edifices, roads, dikes, Bridgess and tunnels. The undertaking is a specified and well-planned building. It consists of three chief constituents. First, value and quality of work. Second, the cost of necessary stuffs and labour. Third, a agenda that refers to the clip of building. Construction undertakings consist of four chief phases such as briefing, planing, building and commissioning ( Austen 1984: 5 ) . This undertaking describes different types of techniques and methods of undertaking direction that make building more effectual at its phases.

3 Briefing phase

At the briefing phase undertaking direction requires the coaction among three participants: client, interior decorator and contractor. First of wholly, the client ‘s squad provides overall waies refering location, layout, equipment and services. The client gives the most appropriate demands for him such as expected measure and quality of work, allowable budget, and specifies the clip restraints. In the event of stuff needs the client must supply the necessary resources. The undertaking director must run into with the client to put up the work program and discourse inside informations of contract paperss. The interior decorator squad must be involved in the procedure of specification and development of the contract paperss. The contracts should run into the client ‘s clip, cost and quality demands. Furthermore, the specified work on the contracts must be executable by the contractor ( McGeorge & A ; Palmer 2002: 53 ) . Any failure at this phase, accordingly, can take to incorrect way and future jobs such as cost exceeds, overproductions and holds.

Therefore, the interior decorator ‘s squad must supply appropriate proficient aid and advice. The procedure of contract paperss development must be controlled by the undertaking direction squad. Experienced directors suggest that all nest eggs and alterations should be done prior to get downing the building ( Austen 1984: 10-11 ) , ( Clough 1991: 3 ) .

4 Designing phase

The intent of the designing phase is to finish the undertaking brief, find the design, entire estimated budget and concluding clip agendas. In add-on, approved versions of working drawings must be prepared and all agreements to the following phase completed ( Austen 1984: 12 ) . One of the most hard undertakings for the undertaking direction is project budgeting. The budget is the sum of money that the client spends for the design and building ( Oberlender 1993: 28 ) . The client ‘s squad must stipulate the upper limit and minimal cost bounds of the design and building. The interior decorator ‘s squad must find cost of public presentation design and arrange contract paperss. The contractor ‘s squad must gauge all possible disbursals for building stuffs, equipment and labour.

4.1 Methods of undertaking budgeting

There are two types of budget estimations for the client: approximate and detailed. The truth of these degrees of gauging depends on its best appraisal with existent cost ( Oberlender 1993: 30 ) . For the interior decorator ‘s squad it is hard to gauge the cost of the design and bring forthing the contract paperss before the building phase begins. The estimations are normally carried out utilizing four following methods: lump-sum, salary cost times a multiplier, cost plus a fixed payment ( Oberlender 1993: 38 ) .

4.1.1 The lump-sum method

The lump-sum method is normally used for undertakings with chiseled measure of work. Preparation of the budget can be developed by undertaking finding and grouping. The cost of each undertaking can be estimated based on the estimations for similar undertakings. Approximate estimated labor-hours of computations, measure of drawings, labor-hours per pulling and travel can be defined based on the director ‘s past experience. Finally, the entire design cost can be estimated by sum uping the costs of all plants.

4.1.2 The wage cost times a multiplier method

The salary cost times a multiplier method is used for the undertakings when the measure of plants is non accurately defined. In this event the interior decorator ‘s squad provides the client with fee agenda that lists categorization and salary costs for the staff, and all other plants that may be charged from the undertaking ‘s budget. At the terminal entire cost of design services can be calculated based on existent clip spent ( Oberlender 1993: 38 )

4.1.3 The cost plus a fixed payment method

The cost plus a fixed payment method is used when the client provides an overall description of the undertaking with chiseled measure of work. The client must pay the cost of all services and wages plus the fixed payment which varies from 10 % for big and 25 % for little undertakings ( Oberlender 1993: 41 ) .

4.2 Methods of undertaking planning and programming

The intent of the undertaking planning is to finish the undertaking on clip. Besides it is the first measure in undertaking programming. Different types of alterations can happen during the building. Changes in forces, monetary values of equipment or design jobs of construction can do work breaks and holds. Good undertaking direction should observe these alterations and adjust them to the agenda. Furthermore, it can forestall overproductions and holds.

4.2.1 The Critical Path Method ( CPM )

For effectual and productive planning and scheduling the undertaking direction squad usually uses network-based direction process known as The Critical Path Method ( CPM ) . The CPM is a graphical program of work operations required for completion of the undertaking and their order of execution ( Clough 1991: 18 ) . It allows to be predicted the clip needed for completion of full undertaking and each intermediate phase with high truth. CPM provides concise information refering the sequence of building processs and calendar day of the months and a certain operation should be started and finished. In add-on, CPM shows critically of import operations that are indispensable for finishing the undertaking on clip. The undertaking director is able to measure the clip demands of alternate methods of building in the event of alterations and holds.

4.2.2 The pointer notation system

The pointer notation system is used for planning and programming of building operations by pulling of undertaking webs. Each building operation or activity is indicated as an pointer. Its start point shows the beginning of an activity and the caput of the pointer indicates its completion. This system helps to demo certain types of dependences between activities. The sequence of activities is usually drawn to expose the relationship of one activity to another. After readying of the web diagram continuance of each activity can be estimated. The continuance of activity in its earliest and latest clip must be given. It will let to the undertaking direction squad to gauge concluding completion day of the month with a low degree of difference, and to finish the whole building on clip ( Clough 1991: 72 ) .

4.3 Hazards

It is indispensable for the director to do certain that the sequence of processs is well-planned and fulfilled. However, there are different types of fiscal and clip hazards that can take to holds and unexpected disbursals. The intent of undertaking direction is to calculate the hazards and minimise their influence. The first possibility of hazards is usually considered by the client and the direction ‘s squad. Hazard analysis in investing appraisal trades with instances that can happen in the hereafter. Potential returns of fiscal investings necessitate to be forecasted. The most of import hazard is that investings may non be returned as expected. The method of Risk analysis provides a clear apprehension of hazards related to determination doing between options ( Pilcher 1992: 170 ) .

5 Construction phase

The building phase is the most indispensable stage of the full undertaking. Most of resources and constituents are applied at this phase. Furthermore, the concluding quality of the undertaking straight depends on building at the site. The intent of the building phase is to construct a construction within ordered clip and cost bounds.

5.1 Time direction and agenda planning

The undertaking director must be after, organize and command site operations. The building be aftering screens clip agendas with its subsequent monitoring, site organisation, equipment and work force programs, and material bringing ( Austen 1984: 38 ) . Time schedules that were made at the planing phase can non be implemented in some instances due to different fortunes, such as inclement conditions, holds in stuff bringing, occupation accidents and equipment dislocations. The direction squad must do important attempts to command and analyse the advancement of building operations and undertake appropriate actions to convey the work in clip with the agenda. Time direction is usually based on occupation webs and agendas designed at the old phase. Calendar dates for the start and completion of each activity must be calculated for daily planning and commanding. This system provides an effectual early warning tool to observe when and at which level the undertaking may divert from the agenda. The monitoring of clip agendas is needed to mensurate and compare accomplishment day of the months of operations within the planned clip.

In order to set up a hierarchy of agendas, agendas can be developed for the client, architect-engineers and the direction squad. The undertaking director must be provided with a list of cardinal day of the months and activities in order to schedule monitoring. The contractor ‘s squad has to complete the building in the intentional period of clip. In the event of holds the deadline for entry can be extended harmonizing to contract paperss. The extension should be initiated by the contractor. The undertaking director must supply documental justification, and determine who is responsible for holds and who will cover excess disbursals. Schedule accommodation is non ever possible therefore a simple rework of the overall program may non be plenty. In the event of serious holds undertaking completion can transcend the clip restraints. In instances when the client or subcontractors are responsible for holds, the contractor must be able to document the clip extension and expose the functions of responsible parties. In this instance, a well-maintained web of building operations can be an effectual base is for analysing the effects of holds and loss in entire clip ( Clough 1991: 205 ) .

5.2 Manpower direction

Manpower direction is based on labor demands. The work force is a crew of workers needed to keep the planned undertaking agenda. In be aftering manpower the undertaking director should follow the demands for labor for each activity and its available supply. The effectual planning method is based on the rating of activities and specifically deviating labor from non-critical to critical activities. The director can therefore apportion available labour to different activities and minimise the clip exceeds. Planing for the figure of building workers can be started by tabling labour demands for each activity. Manpower is estimated for each activity by multiplying the measure of work by figure of workers required. Entire manpower demand is calculated by sum uping all estimated labour workers.

5.3 Equipment direction

On building undertakings the execution of programs and effectual achievement of the agenda besides depends on the quality of equipment direction in the field. The direction squad must do proper choice of equipment. Furthermore, it should supply a program of the usage and care of the equipment on the occupation. Selected equipment should be able to show its best public presentation under specific work conditions. The director has to run into up with senior machinist and equipment providers to set up needed equipment bringing and to put up a program of care and fixs. In add-on, regular fueling and exchanging of oils should be scheduled to cut down the hazard of equipment dislocation. The direction squad should be informed about the development of equipment by field supervisors. In some instances contractors may be given to overload equipment to accomplish higher productiveness. However, it may take to unexpected dislocations and accordingly, to expensive fixs and deficit of the equipment ‘s working life ( Clough 1991: 172 ) .

The equipment agenda can be presented as a saloon chart with calendar day of the months of plants that require the use of equipment. It enables the director to cognize which equipment should be rented or bought for each type of activity. Management of building equipment requires the application of the computing machines. Scheduling of legion activities and affecting separate resources may be really complex. For case, 20 units of some equipment may be used in up to hundred web activities, each holding its ain agenda.

5.4 Material direction

Material direction includes the ordination of stuffs and control of bringing. Prior to doing an order the direction squad must find the needed measure and appropriate quality of stuffs. Furthermore, monetary value, bringing day of the month and ways of transit must be negotiated and established. An indicant of clip restraints is vitally of import because holds in bringing can do holds of the full undertaking and fiscal overproductions. Time for production, shop-drawings and bringing to the occupation site should be included in the overall clip agenda. The first order should be made instantly after subscribing the contract. It is the duty of the undertaking director to see safety factors and do an early order to guarantee that stuffs will be delivered at ordered clip. The excess clip is basically in instance of unanticipated fortunes. However, stuffs should non be ordered overly early, otherwise, they may be unnecessary and, accordingly, damaged, stolen or lose their quality. Furthermore, it can affect excess disbursals for storage and insurance. The direction squad should supply a categorization of activities as a affair of precedence. In the event of holds in stuff bringing for the most of import activities the director must instantly reach providers to place the job and to happen a possible solution. In footings of prediction and supervising the undertaking director usually organizes hebdomadal meetings with contractors and providers ( Clough 1991: 176-177 ) .

5.5 Job-site safety

Construction includes many types of jeopardies such as heat, air current, dust, noise, quivers and toxic chemicals ( Oberlender 1993: 163 ) . And so building job-site safety is vitally of import portion of the undertaking direction, every bit good as planning, budgeting, scheduling and any other undertaking work. It must be applied at all undertaking phases. The site safety should non be merely included in a undertaking, but designed and monitored throughout the undertaking. Workers can be injured or even dices due to insecure behaviour and disobeying the safety regulations ( Barrie 1978: 331 ) . Safety actions, harmonizing to building safety criterions, must be taken to protect crew and equipment from these jeopardies. In footings of the site safety the undertaking director must supply a safe environment and equipment such as safety ways, safety marks, stepss and barrier cyberspaces, unvarying and inhalators. Furthermore, proper preparation of staff and first assistance installations must be provided on the job-site ( Galeton 2006 ) . Finally, it is of import to stress an economic facet of the job-site safety. Sing equipment dislocations, excess disbursals can be involved or it can take to the loss of belongings. Accidents related to workers affect medical costs, compensation benefits and legal liability. Harmonizing to experient directors, job-site safety direction should see productiveness and safety as related parts of high occupation public presentation ( Oberlender 1993: 163 ) .

6 Commissioning phase

The intent of the commissioning phase is to guarantee that undertaking is completed harmonizing to the contract paperss and that all installations work decently ( Austen 1984: 15-16 ) . This phase is usually controlled by the direction squad and the client ‘s representative. The client requires the proving all equipment: H2O, sewer and power systems before the concluding closing of building. The undertaking director must co-operate with contractors and interior decorators to specify responsible parties for each vas and point of equipment. The review of a piece of equipment or vas can be made individually and, accordingly, authorized and accepted by the client.

6.1 Final review

Before the terminal of the undertaking the client requests the concluding review. Prior to the petition the director should fix a list of points that should be tested and supply several walk-through reviews. After the testing and adjusting equipment and vessels the direction squad and interior decorators must fix runing instructions and care manuals. In add-on, the future forces of the edifice should be trained and inducted. Finally, the undertaking director must schedule and carry on the concluding walk-through review before get downing up the edifice. After the review and credence by the client, the contractor may publish a Certificate of Substantial Completion with an affiliated list of lacks. In following 30-40 yearss, after the riddance of lacks, the client provides the concluding payment ( Oberlender 1993: 170 ) . Prior to the payment guarantees and lien releases, which are understandings between the client and the contractor under which debt duty remains in force, should be signed which must be prepared by the direction ‘s squad ( BusinessDictionary.com 2009 ) .

6.2 Guarantee

Harmonizing to the contract paperss it is required that the contractor guarantees proper working of all equipment, vass and stuffs without any defects during following twelvemonth. In the events of dislocations or defects all the disbursals for mending and replacement of trim parts should be covered by the contractor. The undertaking director must guarantee that instructions, spare parts, manuals and certifications are handed to the client before subscribing a Certificate of Final Completion and concluding payment ( Oberlender 1993: 173 ) .

6.3 A lien release

In some instances in malice of a full payment of the client to the general contractor, stuff providers, subcontractors and workers may non acquire their payments. They have a right to register a lien, even if the general contractor got the full contract sum. It can take to refund of the client. Therefore, the undertaking director must guarantee that all liens are released before the concluding payment.

6.4 Records

Throughout the undertaking the direction squad has to do records of any alterations related to original drawings. For case, alterations of paths of H2O and heat pipes, electrical overseas telegrams, public-service corporations or any concealed work. The recording can be used for the declaration of differences or misinterpretations between the client, contractors and the interior decorator squad

7 Decision

The purpose of this undertaking was to present the reader with chief constructs of direction in building undertakings. I made an effort to demo direct correlativity between direction techniques and building processs and how they can be made more effectual. This paper revealed new apprehension of whole building concatenation as a procedure with really close dependent activities and phases that should be well-organized and managed. The importance of engagement of undertaking direction squad in determination devising processes is become clearer. Throughout the undertaking it is emphasised that any holds or errors of the building processs can take to holds of full undertaking. I suggest that these ways of direction can be developed and this topic should be taken for more broad and deep surveies.

8 Mentions

    Austen, A.D. ( 1984 ) . Pull offing Construction Projects. Geneva: International Labor Office.

    Barrie, D. , Paulson, B. , ( 1978 ) . Professional Construction Management. London: McGraw-Hill International Editions.

    BBC ( 2009 ) . State profile: Saudi Arabia. Online( Accessed 18 June 2009 )

    BusinessDictionary.com ( 2009 ) . Release of lien. Online( Accessed 23 June 2009 )

    Clough, R. ( 1991 ) . Construction Project Management. Third Edition. New York: John Wiley & A ; Sons, Inc.

    Galeton.com ( 2006 ) . Safety equipments. Online( Accessed 23 June 2009 )

    McGeorge, D. , Palmer. A. ( 2002 ) , Construction Management, Second Edition. Oxford: Blackwell Publishing Company

    Oberlender, G. ( 1993 ) . Undertaking Management for Engineering and Construction. Singapore: McGraw-Hill International Editions.

    Pilcher, R. ( 1992 ) . Principles of Construction Management. Third Edition. London: McGraw Hill Book Company

    Weiwei, A. ( 2008 ) China digital times. Online. hypertext transfer protocol: //chinadigitaltimes.net/2009/04/chinese-activist-seeks-earthquake-truth/ ( Accessed 16 June 2009 )