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Building failure can be some part of building cracking occur, more seriously will bring building collapse. Building collapse will carry the risk of human injure or deaths. For example, buildings and structures all around start falling. This causes many people to get hurt, many of them fatally, because of the impact of falling material. Or, in high rise buildings, people themselves might fall from higher floor, thus, getting hurt, due to the impact of fall. Buildings with glass-facades are especially dangerous, as, glass being brittle would tend to crack with smallest deformation of the frame. And, worse, glass being very heavy has a very high impact on hitting somebody. And then, glass shards have a tendency to go inside the skin and cause damage to internal organs (Sanjay Churiwala and Naveen Gabrani n.d.). In addition, building collapse results in property damage and functionality inadequate. It also needs to spent time on clean-up, repair, cost losses and so on to get the facility up and running again.
Building that causes fail may due to numerous of reasons that may not be easy predict before or during the construction. The analysis shows the general causes of building tend to failure that include unwise land-use and defective in designs which are arise at pre-construction phase and those construction and operational error which arise at during construction phase. Errors appear from pre-construction and during construction phase has the greatest potential influence on a project's final outcome.
Building failure may occur due to three parties involved - Consultant, Contractor and Developer/ Owner. The Consultants and Contractors had given insufficient of control and supervision of site operation and the quality control. More that, owner also is the one who are required to give cooperate and any assistance with Consultants and Contractors to completed the construction project. According to Mohammed Azad Hossain (2009), such errors ultimately lead to a situation, which may involve such failures, which are related to excavation and equipment, inappropriate sequencing, not enough temporary support; unnecessary structure weight; untimely taking away of shoring or formwork; and non-conformance to design objectives.
Problem Statement and Research Question
Failures have been found in various types of the buildings. Failure in buildings built any time the last 25 years, some as recently as the last couple of year (Steve 2008). A total of 225 building failure in Unites States and the result show that the building failure of low rise building constitutes about 63% of all cases, followed by multi-storey building as a distant second and this has been established by Kumalasari Wardhana and Fabian C.Hadipriono (2003). Building tend fail are depending on materials, designs, environmental conditions, method of construction and which the building is put of the use to, etc.
Sultan Mizan Zainal Abidin Stadium is a new multi- purpose stadium in Kuala Terengganu, Malaysia which was constructed by South Korean construction firm. On July 3, 2009, a major part of the roof construction collapsed. The major cause such stadium collapsed has been identified are failure by design and materials used, rush development and under-supervised.
Aims and Objectives
The aim in this dissertation is to study and analyse the building failure and to find out the factor that causing building failure by three parties involved in construction industries. The objectives are:
1) To study the factor that caused building failure by Contractor.
2) To undertake the factor that caused building failure by Consultant; and
3) To determine the factor that caused building failure by Developer/ Owner.
Scope of Study
The scope of study emphasizes on the building failure and factors that causing by three parties involved in Construction industries which are Consultant, Contractor and Developer/ Owner.
Research Methodology is the way in which the research objectives can be questioned. There are two types of research strategies, which are quantitative and qualitative research. Quantitative research is highlight in the collection and analysis of data. This research based on testing of theories and to look for whether the theories are true. For the qualitative research, it approaches seek to gain insights and understand people's awareness. The understandings, opinions, views, etc. of people are investigate which collect from survey questionnaires and document review.
Primary Data Source
â€¢ Survey Questionnaires
In this proposal, Survey Questionnaires will be used to collect all the opinions, views, etc. This method is the more accurate since as the first hand information collected from original research. The survey questionnaire form will be distributed form to 50 people who are random citizens and the purpose to investigate the major factor of building failure causing by three parties involved in construction industries. The survey questionnaire form will be set out in closed-ended question format for respondent to select the answer. That mean the closed-ended is the limit respondents' answers to the survey, such as choosing either yes/no, true/false, or multiple choices. More that, the recommendation to reduce such failure in construction industries are also be conducted by survey questionnaire.
Secondary Data Source
The research undertakes a review of all literature which known as secondary research method that is selection of available related documents on the topic, which contain information, ideas, data and evidence written from a particular standpoint to fulfil certain aim or express certain views on the nature of the topic (Chris 2003, p.1-2). In this proposal, the information sources and obtains can be from reference book which are from Library College and National Library. Beside, information also can be obtained from article and journal that were related to cause failure of the building. Electronic sources such as internet website from Google can helped to found the information which required in this research, and etc.
For this study dissertation report involved 5 chapters. The general description of each chapter as follow:
Chapter 1 - Introduction
The first chapter is the introduction of the dissertation. The contents in this chapter include Project title, background of the research problem, problem statement and research question, aim and objectives, scope of study, research methodology of the study and dissertation contents.
Chapter 2 - Literature Review
In this chapter two is the literature review. It will review on the selection criteria of building failure which in discussed for failure of building, factor that causes of failure by primary parties involved in construction industry.
Chapter 3 - Research Methodology
Chapter three is includes the research methodologies and to provide the rationale for the method adopted in this dissertation project. Then methods used to research are literature review on journal, reference book, etc., survey questionnaire, and case study.
Chapter 4 - Research Findings
Chapter four is the discussion and result analysis. The data collected and interpret from research method adopted, identify and analysis it, then present and explain the findings. The data present will in a table, chart, diagram, and essay form.
Chapter 5 - Conclusions and Recommendations
The last chapter will be the conclusions and recommendations. The achievement of research objectives, recommendations and limitation of the research will be record in this chapter.
Tunku Abdul Rahman (TAR) College Harvard Referencing system will be using in the research. This Harvard Referencing system is a standard practice at all institution of higher learning including Tunku Abdul Rahman (TAR) College.
Project Plan and Schedule
The table below is the Project Plan and Schedule of the research proposal project.
CHAPTER 2: LITERATURE REVIEW
Basic of Building Failure in Construction Industries
Definition of Building Failure
Building Failure is refers to the member within structure or component or structure itself which are loss of load carrying capacity. More on the time initiated of building failure is when material stressed to its strength limit and fails to withstand the stresses imposed upon it. The failure will expose itself by crack or breaking, occur permanently deformed, becoming bending and more seriously may collapse (Wikipedia 2012). Calvert (2002) notes the buildings, "like all structures, are designed to support certain loads without deforming excessively. The loads are the weights of people and objects, the weight of rain and snow and the pressure of wind and load of the building itself. With buildings of a few floors, strength generally accompanies sufficient rigidity, and the design is mainly that of a roof that will keep the weather out while spanning large open spaces. With tall buildings of many floors, the roof is a minor matter, and the support of the weight of the building itself is the main consideration. Like long bridges, tall buildings are subject to catastrophic collapse". The loads can divide into two parts which called live loads and dead load. Live loads are the weight of temporarily attached to; it can produce by like people, machinery and equipment, furniture, appliances, etc. of the building or other structure. But do not including the material that utilized in construction or environmental loads or anything permanently attached to it such as wind load, snow load, rain load, earthquake load, flood load, or dead load (N.A.N.d.). The case effects of machinery, equipment, furniture, appliances concentration, deflections or cracks must be considered and to determine the necessary proper intensity of design to considering those effects.
Dead load is a fix load in a structure such as a bridge, building, or machine that is the weight from members itself, the supported structure itself, and permanent attachments equipment or accessories that apply in the building (Merriam-Webster, Incorporated 2012). The item that considered of dead load include construction material that use to build or make up the building such as beams, columns, floor systems, ceiling systems, wall systems, doors, windows, floor coverings, wall coverings, cabinets, and the like. Besides, the item considered of permanently attached equipment or accessories such as heating and ventilating systems, electrical trays, piping, etc. In the other way round that the item is not considered to dead load are the things as movable. That item like shelving, desks, chairs, beds, chests, books, copiers, stored items, or anything else that can be moved around during the life of the structure. The feature of dead load shows that they are the weight of final structure. This is creates a bit difficult for the design Engineer since in order to design the building, the Engineer must need to know the weight of the structure. Besides, the engineer also needs the accurately define the weights of the final structure. At the beginning of design process, the weight of the structural element and the framing are all unknown. So more of time to solution this kind of difficult position is the design Engineer often involves iteration where an educated guess is needed as to where design will finish, the dead loads is based on estimate, select the structure members that based on the estimated loads, dead loads is need to recomputed, then continue the cycle until all the member sizes do not change (T. Bartlett Quimby 2007).
The aim of the structures are designed is to achieved the requested function of creation, ensuring the structures could be applied all of the loads, and sufficient safety of structures is obtain. In the properly designed system, it will prevent a local failure cause immediate and gradual failure of the complete building. The ultimate failure strength of a material or structural element is taken carefully consideration in the structural engineering and structural design to prevent failure (Finn 2009). As Aggeliki (2009) notes in his articles, if that are unexpected loads are applied, one of the factor of safety is needed to link into the design analysis to prevent building failure. Nowadays, building codes have improved and expressively to reduce the structural collapses, but it still cannot essential completely prevent the structural failures. Even though the structural failure is become less, but the results still are disastrous. Until now the engineers are still insistently searching the method to reduce structural failures by introduce to proper building standards and other safety requirements. Lastly, reducing of human error, carrying out proper hazard identification, and using suitable maintenance procedures for the structures is the chance can be minimized of structural failure (Suvo 2009).
Type of Building Failure
The term of "defect" is defined as the premature failure of structure and the results cause from improper or substandard engineering, manufacture, design, application and installation. In another way, the term "failure" can described as the system breakdown or unable to function at all, breakdown in the operation, quality, or appearance of structure, component or material. Therefore those are different meaning in term of "defect" with the term "failure". So, the following table show some of that various type of building failure (James and Ransom 2007, p.8):
Concrete or render cause crazing or shrinkage cracking.
Flaking and peeling of paintwork.
Staining and soiling of the finishes.
Caused sagging of the floors.
Leaks in elements such as roofs, walls and floors
Failure of materials
Chemical attack of rendering or concrete, mortar or brick.
Fungal are attack of the timber.
Metals are corrosion.
System failure of components and elements
Carbonation of concrete.
Leading to corrosion of reinforcement and subsequent cracking and spalling of concrete members.
Subsidence which caused downward movement of a building and caused by below ground factors such as desiccation of clay soil.
Settlement which also caused downward movement and caused by overloading.
Non- structural failure
Cracking and deboning of plaster.
Tenting, deboning and bubbling of floor coverings.
Roof tiles and slates are delamination.
Jamming of door and windows since of moisture intake by these components. Usually in winter or summer, the wood will be dry out and door and window will become unstuck.
Chemical reaction (sulphate attack) on mortar or rendering.
Excessive distortion in beam, column or wall owing to structural movement.
Primary Parties Involved in Construction Industries
Lawrence (2003, p.1-2) indicated that, "The management of construction is an enterprise that involves many people with diverse interests, talents and backgrounds. The owner, the design professional and the contractor comprise the primary triad of parties, but others, such as subcontractors, material suppliers, and bankers, insurance and bonding companies, attorneys and public agency officials, are vital elements of the project team whose interrelated roles must be coordinated to assure a successful project". In this part will concern the duties and responsibilities of the primary parties such as the building contractor, consultants, and Developer/ Owner on the construction project. The primary focus here is on the building contractor who are to carries the lead duties and responsibility for the on-site installation work or sometimes off- site as well and all of the associated planning and follows up. At the same time, also to understand the duties and responsibility for other people and organisations participate to success the project.
Definition of Building Contractor
According to Exforsys Inc. (2010), In the Construction industries, the contractor also can calls as the project engineer or project manager. The contractor is the one an individual who engages in the planning, developing and coordinating of activities in the construction project. The contractor also is the one to supervise the construction and to ensure all necessary measures must be taken in the result of completed finished product. More important is notwithstanding that possible delays due to bad weather or building causes any emergencies, contractor needs to sure that construction work finish are met the deadlines and try do the best of prevent causing any delay.
The General contractor is employed by the developer/owner, and may also advice of the Architect to the developer/owner. Contractor must first assess the project-specific documents (referred to as tender documents). In during of the construction stage, contractor required to visit the site since it will help to get a better understanding of the project. He may handle the work on residential dwellings, commercial buildings or infrastructure, such as roads, bridges or schools. As the contractor, working hours are more the time is irregular, since any sudden problems that may arise at the construction site and constructor must be available at all times to resolve that problem. Besides, the contractor may need to calculate the price, as also called an estimate. Contractor required providing the approximate price with considers the cost of materials and equipment as well as the cost of labour to the owner for the project.
The General Contractor's Duties and Responsibilities
That is many duties and Responsibilities that building contractor must be fully complete on day to day in order to ensure the construction project is completed smoothly and in a timely and correct manner. More about that, building contractor also need to ensure the project complete by price specified in the contract. Building contractor to construct the construction project must be according to the designer's plans and specifications. Firstly, the duty of the building contractor is require implementing a plan and direct in which to carry out all the aspects of construction project. This is from hiring the workers to developing the contraction project and follow the step-by-step timeline that the project from start until end.
In addition to implementing the construction plan, the building contractor is responsible for hiring, supervising, firing employees who are under the specific construction project with the contractor. For example, building contractor including design and worker selection or appoint as to hires specialized subcontractors to perform all or portions of the construction work, managing personnel on site, providing site surveying and engineering on site, etc. As a supervisor on construction project to supervising the employees, the building contractor must be regard to the workers and also take care of payslip. Ensure engage in hire someone to do work for the contractor.
Obtaining the materials for the project also is the one of responsible for the building contractor. For instance, Contractor is the one to providing all of the labour, material, equipment (such as engineering vehicles and tools) and services necessary in the construction project. Since construction projects must be up to the contractor to acquire goods to build the structures, if not, cannot complete without the necessary building materials.
Another duty of the building contractor is to applying for building permits from relevant department (local authorities). At before want start to construct the building, it must be acquire all necessary licenses and permits from relevant entities so that the building project just can begin. Since there are many regulation that the building contractor must be follow which relate to these documents which each building in order to engage in construction.
The building contractor must complete the project which agrees with all laws, rules and regulations. The building contractor need to research about relevant regulations and laws that are related to the construction process. There are many laws such as different state have their different own law. Those laws will state that when, where and how a building contractor and his crew should build in certain areas. So, the building contractor must be recognized and followed in order to complete the project in a law-abiding manner.
Another specific duty of the building contractor is budget issues. The building contractor may require planning all aspects of a construction project which including establish a budget for the construction project. That budget must be follow by the building contractor as closely as possible. For the example that budget will allow the building contractor to gain supplies, hire workers and finish the construction in a cost-efficient manner. That must be taken in serious matter which building contractor to following budgets and his/her should be care with or to ensure that the project will be completed as what was aspiration in the beginning of plan.
From the beginning to end of the construction process, reviewing the progress and implementing any changes along the way also is another item which relate to the responsible of a building contractor. The building contractor needs to follow closely of the specific building project and necessary to make any changes when he/she deems fit to do so (Exforsys Inc. 2010).
Lastly, the working hours of building contractor are irregular. Those emergencies and surprises may arise which relate to the project and it may occur on-site and sometimes off-site as well. So, as the building contractor must be assistance with an emergency issue available at all times and to resolve that problem.
On the Wikipedia (2012) provided that, In the during construction phase, the building contractor is also responsible for providing temporary utilities on site like equipment, tool, formwork and etc., securing the property, control the quality assurance, managing personnel on site, providing site surveying and engineering on site, disposing of or recycling construction waste, monitoring master program (schedules) and cash flows, maintaining accurate records and etc. Besides, he/she should day-to-day go to the site and specialize and oversee of a construction site or the progress of a particular building task, such as plumbing, heating or electrical wiring. He or She also require to management of the vendors and trades.
The building contractor should be done to prevent any oblation either the safety of the workers or the quality of the work. The contractor is has fully responsibility to complete and the purpose to achieving the quality level and for safety that required in the documents. The building contractor may also be involved in the training of the owner's personnel in the operation of the building systems and may be provide some maintenance after construction is complete.
It is important that the contractor's has an obligation to get satisfy the minimum requirements of the drawings and specifications from the Architect. In the bidding process, the owner will asks for the lowest possible price to perform and that only those things are absolutely required by the drawings and specifications. Thus, the contractor is need obligated to satisfy those minimum requirements and no more. Of course, the owner is always free to require additional performance by change order.
In the design / bid / build method, the owner only contract with the contractor. In the case, the contractor has no any contract with the designer. Then the contractor's is required responsibility to comply any requirements of the contract with the owner. All efforts by contractor are essential to prevent the structural failure as it causes dangers to human life and property. There are the numerous of causes for a structural failure, and there is a requirement for a proper analysis of all the factors before construction (N.A, N.D).
Definition of Consultants
Who are the consultants? The consultants can be the design consultants, cost and contract consultants, land surveyors, etc. The design consultants usually comprises of the architect, civil and structural engineers, mechanical and electrical engineers and other specialist designers, such as interior designers, landscape architects, lighting specialists, town planners, etc. Design consultants as a designer of the project in the area he/ she is specialized in. They also as a facilitator of client's need and project brief. Besides, they as an advisor to the client on matters are relating to design and on statutory requirements and by- laws relating to the project. The cost and contract consultant can be the quantity surveyors. The quantity surveyors usually act as the cost and contract consultant for a project.
The General Consultants Duties and Responsibilities
In the following are shows the duties and the responsibilities of both which are design consultants and cost and contract consultant.
Carrying out design works in their areas of specialization.
Ensuring design works are properly coordinated with fellow consultants.
Ensuring design complies with the requirements of the authorities, and with the by- laws.
Choosing appropriate systems and materials, and making sure design for the elements of the works is kept within the cost plan.
Notifying and advising the client on any necessary design changes due to unforeseen circumstances.
Ensuring that design works are carried out within the time frame as set out in the programme.
Conducting field observations to ensure that the contractor carries out the works as per the specifications and design.
Contract documents include a budget, specifications, any general and special conditions prepared by a design professional such as an architect.
Cost and Contract Consultant
Responsible for study of the economics and financial implication of a construction project.
Preliminary cost preparation and estimating.
Cost plan preparation and cost studies.
Contract documentation and administration preparation.
Evaluation of contractors' tenders.
Cash flow forecast and post contract coat monitoring.
Valuation of Variations.
Preparation of periodic cost report for the client.
Evaluation and settlement of contractor's claim.
Settlement of contractual disputes.
Definition of Developer/ Owner
The developer/owner is the party who wishes to have a project constructed and pays for it. The developer/owner can be an individual, a business enterprise or an organization, and it can be both private and public. Developer/Owner is the key master to the construction production process. In addition, when initiate a construction project, developer/owner have a right to selecting project timing, priorities, cost limits, specific requirement, and determine the contractual methods. There are two type of developer/owner which are well informed and know nothing. Developer/Owner who are well informed mean know what they want and take decisive steps to achieve it. Another are know nothing mean the developer/owner need guidance to formulate their wishes and match them to the available budget.
The General Developer/ Owner Duties and Responsibilities
Basically the duties and responsibilities of the developer/owner in a project can be under the following:
Providing the client's brief and clarity of brief.
Financing the project, i.e. they pay for the project.
Ensure safety, health and environment aspects of the project are complied with in accordance with the legislation as laid down by DOSH and the Department of Environment.
Make sure smooth incorporation and prevent disruption takes place.
Avoidance of interruption to professional advisor's job.
Building Failure Caused by Primary Parties
Adel Abdulaziz Al - Barrak (1993) postulates that, the construction business is the much higher level of competitors than any other business. As the result showing that, construction business has very high risks could lead to failure are exposed than any other business. Therefore, to determine cases of failure should be studied and such cases should be avoided in order to reduce that number of failure. The construction business need to more attention to treat the weak point. In the section will study the various building failure that cases by primary Parties involved in construction industries. There are three parties involved, namely, developer/ owner, consultant, and contractor. The relationship between these parties is adversarial since different parties has different goals they want to meet and each party goals that will has arisen conflict with the other parties goals. For the instances, the developer/ owner want the project be low cost to expend and result in good quality. But this will reduce the profit that contractor gain. Besides, as the consultant, he/she wants the project is much more attractive and safe. In this circumstance, it may cause both the contractor and the developer/ owner spend more money or extra cost on the project. Except on this relation among parties, which still have more any other reason could be a major source of building failure.
Building Failure Caused by Contractor
More commonly factor that strong influence in the contractor's failures in the project or building are lack of experience, poor labour productivity, bad management decisions, lack clearly assigning the responsibility and authority, recruiting multinationals, neglect, frauds, lack of control or supervision system, and lack of communication system.
Lack of Experience
That is important the building contractor must have the experience in the construction project. Contractor is the person who is daily to manage the activities process on the construction site. Besides, the building contractor also as field supervision to supervising all hiring worker on site. If the building contractor does not have experience, he may not to solve any problem arise from construction site. Dr. Sadi Assaf (2004) indicated that, the owner should try to employer a higher degree qualified working team in the company because that may able to maximize the usage of the company's resources and avoid any waste resources occur. The working team employer by owner mean should have good experience in the same line of work.
As the more experienced building contractor in the project should be able to demonstrating knowledge of, propose a wide array of options, and have the experience with a variety of products, materials and techniques. Little or no experience of the building contractor is the most common cause the project or building failure. That is very difficult if the contractor resign at the halfway through the project, since the new contractor employ by the owner need to take over the work that where ex-contractor left off. For instance, the second contractor may not familiar to use the materials or techniques that first contractor have used. In addition, the second contractor may not at the same way that first contractor wishes to did, unless there are very specific drawings are provided (McCaleb Construction Inc, 2012).
Poor Labour Productivity
Poor labour productivity also mean as poor workmanship in construction industries. Poor workmanship is the actual that cause of construction either in defect or failure. Even have a superior the quality materials and may unsuccessfully to serve the planned function. Dr. Awad S. Hanna, (2010) demonstrate that, "In the last 50 years, construction labour productivity has consistently lagged behind productivity in the business sector. It is widely reported that, on a typical project, the percentage of productive work ranges between 30 and 40 per cent as a result of a lack of proper tools and information, poor material handling, inadequate management and other related factors."
There is a direct relation between productivity and cost, result of productivity is not only very important to a contractor, for example if result had a poor productivity, that may affect the reputation of the building contractor, but also is a main key either to success or failure of the project. Since the building contractor is the one person who hiring or appoint the worker to work under specific construction project. He/ She must to take responsibility to supervising all the work that labour done and prevent any of poor productivity/ bad workmanship causing by labour. Uncontrollable weather, lack of labour experience, lack of labour surveillance, misunderstandings between labour and superintendent, lack of management supervision are the main factors influence the productivity ( Dr. Sadi Assaf, 2004).
Bad Management Decisions
Nowadays contractor still believe that, building fail is the only reason causes by labour problem, substandard use of material, inflation of material, high costs of equipment, tightening of market and etc. Besides, they do not know they may contribute to failure due to bad management decisions. Management decision in overall planning, coordination, and control of a project from beginning to end and ensure to meet what the developer/owner want in order to produce a functionally and financially viable project (Wikipedia, 2012). The influence of the bad management decisions might not cause failure directly but they lead to failure.
Lack Clearly Assigning the Responsibility and Authority
Adel Abdulaziz Al - Barrak (1993) acknowledge that, the organization of company is very important to do the work efficiently. Organizational chart is needed to prepare for each project which purpose to determine the grouping of activities, the authority relationships, and the communication channels between the groupings. They may use 2 types of charts in the organization of company which namely chain and circular. In using chain structure will centralize by an individual or small group of individuals. At the other hand, circular structure is emphasized in decentralization and it may use in big the groups. More of the time the chain structure is the way faster and more accurate to transfer the information to the other person. In addition, that must clearly recognized the responsibility and authority for each party in the organization chart. If lack of assigning the responsibility and authority for each party, it may delay the work and conflict between these parties. So very important that company is well organized, and the contractor can manage the construction without causing any problems at the same time will also reduce the chances of failure.
Most the building contractor prefers to recruit multinationals because those are cheaper to recruiting the worker who are from other country example India and Pakistan. Even though they know the problems will arise behind this decision making. Contractors who recruit multinationals will have problems in the communication between these nationalities. That may problem in communication to each other person, since the building contractor recruiting the worker from more than one country. Workers will not understand each other because they speak on more than one language. So in this circumstance can may causes building failure (Adel Abdulaziz Al - Barrak, 1993).
When ignorance or incompetence cannot be proven then cause of failure then it can be explained by neglect or negligence. Neglect means no pay attention, remiss in care of treatment of, omit, through carelessness or indifference, fail to perform what ought to be done. Adel Abdulaziz Al - Barrak (1993) indicated that, another cause of the building failure is neglecting. An act of neglecting is to be negligent or to disregard. That may omit to respond to the problems and suggestion during construction or repair. For example, something the employees/worker may suggest some idea that could help to improve the productivity and reduce the problem. But contractor may neglects these things and these problem will complicate until not be easy to solve that problem later. It failure by a building will difficult owner or tenant to maintain the building adequately or repair it promptly after accidental or weather damage are arise.
In regard with Building Construction Blog for Professionals and Laymen (2008), sometime contractor will try or planning to cheat when professionals leave the testing of the strength of materials that are used on site to the contractor. In this circumstances, contractor may using a very poor mix concrete on site to construct the building, since planning to cheat may gain more of own profit or pocket money . More that, the same thing with the poor quality of material, irons rods or reinforcements that may using to construct and there are not compliance that provide described in contract document or required by the Architect in accordance with the provisions of the contract.
Lack of control or supervision system
Jacob (1968, p.372) Illustrate that, "to control is defined as to exercise a direction, restraining, or governing influence over the production. Just as many centuries of tradition have taught that a ship can be well run only when the captain is in sole command, so is it also in construction. There can only be a single control, and that control of production can only rest in the hands of the contractor". Control or supervision is defined as having to a general oversight of the work on site and also as all inspection of the work are necessary. To ensure all the building project that is according to the plan which prepare by designer, building contractor must control or supervision all stage of the construction work. Besides, contractor must make sure there is no any conflict or disagreement on site. Contractor shall be fully responsible for the site safety. Building failure can be owning to lack of systematic control, supervision, and checking of the working during construction phase.
Lack of communication system
Communication is the more important that at all levels in the building process. In this scenario, important must have a good communication between contractor with hiring worker/ labour, sub-contractor, supplier, etc. on site. Those are more effectiveness of communication during construction.it also helps to enhance production and completion within specific date which provide in contract. More paramount important that aspect of communication as the work force is an essential part of the construction industry; unless receives the regular flow of material by labour and also be informed what they need to do or what to do with them. Another important of communication on site is managers and supervisors are in close contact with the work men via verbal or written information purpose to control points and work area. Since the construction projects are complex and more risky. Essential to ensure the project is completed successfully are co-operation and co-ordination of the activities through group communication are needed. Poor communication will be found as cause of defects and even failure in many constructed works.
Construction faulty has been most important cause of structural failure. In this case Mohammed Azad Hossain (2009) indicated that, it can also add to failure of structures are that the contractor's failure to build in accordance with drawings and specifications which provide by design team. During construction phase, contractor may use of inferior or sub-standard building materials to build the building. It is also another reason cause of buildings fail in construction industries. It also can seriously weaken the structural reliability of it where overloading during the life span of a building. In the additional information we know are extra loads due to unauthorised change by end use like additions and alterations to the structure such as intensifying an under-designed building. In this case it can contribute to its caused ultimate failure of the building.
Building Failure Caused by Consultant
Except contractor, consultants also are the person that can be strong influence building failure in construction industries. In the following show that more commonly factor failures which caused by consultants in the project or building are:
Better communication is to be effective in the construction industry only when the idea is transmitted to achieve their desired action and operation involved team effort such as client, quantity surveyor, architect, consulting engineer, specialists, contractor's, etc. The general of communication in this scenario are can be classified into communication between client and the consultants, between the consultants, and between the consultants and the contractor. The purpose of the communication between client and consultant is want to know the client statement of requirements include size, nature, function of building, and time limitation of the project. When design is done or completed by consultants, then will start to present their design report and manner to be understood by client. Secondly, communication between the consultants also call as design team is needed to effective exchange of the ideas and the information to advice the client on smooth running the project especially in a very complex project form. Lastly, communication between the consultants and the contractor is more important part, since contractor is the one person who are bring or translates all the effort of consultant into actual practical which client requirement. So, that is necessary have a communication between them at every meeting and other to make a discussion. Poor communication will lead to design problems that cause design errors and may fail to construct the building. Communication also is the one aspect of management of projects that permeate all others which explained by Tula (2011).
Sometimes buildings sudden cause catastrophic collapse and even it happen without any notice or any external cause (e.g. earthquakes, etc.). Once of the main causes for building failure or collapses are bad in design. That may cause the building not able to support the load (live and dead) and arise deforming excessively of the structural. Bad design can from the errors of computation, reliance on inaccurate data; failure to account for the loads of structure will be expected to carry, erroneous theories, improper choice the material or may misunderstanding of their properties that using to construct the building. In the circumstance that happen any failure of building, the relevant consultant who are created at the drawing board must be undertake the responsible for these failures. Building failures occur due to appearance of gross human error or negligence by someone which explained by Mohammed Azad Hossain (2009).
Lack of Checking and Inspect
The majority of the building contractors are always unhonest to performance in construction industries. For some example, they may try to cheat and wish can gain more of own profit or pocket money such as using low standard material which not compliance that provide described in contract document. In this circumstance, as a consultant must be responsibility to checking the work that contractor is done. The professionals is need on site to have a checking the quality of materials when concrete is been cast on site by the contractor. For the instance, that has a funny thing in the Nigeria building industry where are the professionals always leave the testing of the strength of materials used on site to the contractor. So that will giving the contractor has a chance planning to cheat all he has to do is to prepare a quality mix to the testing laboratory while on site but actually he is using a very much poor mix to construct the building. Even through the same thing with the poor quality of iron rods or reinforcements and etc. using on site and no baby know about that. (Building Construction Blog for Professionals and Laymen, 2008). Barry (2001, p.5) argues that, "Investigation should be carried out by another professional person, such as a structural engineer, or that a specialist contractor should be asked to inspect and prepare a specification and estimate for appropriate work".
Consequence of poor technical research and knowledge by the consultants will cause many structural failures have been. Mainly in technologically advanced countries, as technical awareness gets better of the consultant, then arise of those errors becoming reduced and at the same time far the cause of known structural collapses. That error is not a construction divergence or negligible computation error. In this situation error is a gross error or mistake (Mohammed Azad Hossain, 2009).
Lack Knowledge about Material
According to Mohammed Azad Hossain (2009), that is important have a good material used to construct the construction. In other hand, it also cause failure of the project where used the substandard material in construction industries. That may consequence by the human error such as consultants or design team involving lack of the knowledge about material or combination of contrary materials or new material product in the construction industries. There are structural failures that can be endorsed to irregularity in material use.
There are more and less same with the contractor. In this circumstance is the consultant may omit or negligence to respond show of the problems and suggestion during design stage as pre-construction phase. For example, there negligence some importance part of the drawing, specification and etc. they forget to draw out or list down at all. Besides, that problem may difficult to solve later, more seriously will caused building failure or collapse.
Building Failure Caused by Developer/ Owner.
Fail Follow Regulations and Procedures
Ghanaian Times (2003) provided that, "the Committee of Inquiry into the collapse of a four storey building at Swalaba in Accra, on 12 December last year, has attributed it to the failure of the developer to follow approved building regulations and procedures" . In this scenario, developer is failure to give any statutory note to A.M.A before the commencement of the work as required by law. At the same time, contrary to the law by the developer since did not notify to the A.M.A. as various critical stages of development that the building reached to. In this case also expose that the contractor failure to using any machinery such as poker vibrators, concrete mixers and scaffolding items required for that kind of structure within five weeks for its work. More that, building did not comply with the approved site and block plans and observed that were much less than approved for all the setbacks etc.
Cost saving action
Cost saving action may have caused building collapse. For example that has a case building collapse of a Shanghai apartment building it is because factor caused by cutting costs. It is the important factor behind the collapse of the building. According to Hou (2009), for this case, the developers did not to remove the soil mound since the cost for transportation of the soil mound is up to 6-7 million yuan which as US$0.88-1.02 million and finally caused by building collapse.
Building Failure is refers to the member within structure or component or structure itself which are loss of load carrying capacity. More on the time initiated of building failure is when material stressed to its strength limit and fails to withstand the stresses imposed upon it. The failure will expose itself by crack or breaking, occur permanently deformed, becoming bending and more seriously may collapse. There have a various type of building failure such as aesthetic failure, functional failure, failure of materials, system failure of components and elements, and etc. The owner, the design professional and the contractor comprise the primary triad of parties are vital elements of the project team whose interrelated roles must be coordinated to assure a successful project.
The contractor is the one an individual who engages in the planning, developing and coordinating of activities in the construction project. The consultants can be the design consultants, cost and contract consultants, land surveyors, etc. The design consultants usually comprises of the architect, civil and structural engineers, mechanical and etc. The cost and contract consultant can be the quantity surveyors.
The developer/owner is the party who wishes to have a project constructed and pays for it. The developer/owner can be an individual, a business enterprise or an organization, and it can be both private and public.
The construction business has very high risks could lead to failure are exposed than any other business. Therefore, to determine cases of failure should be studied and such cases should be avoided in order to reduce that number of failure. In the section will study the various building failure that cases by primary Parties involved in construction industries. There are three parties involved, namely, developer/ owner, consultant, and contractor.