The issue solved in this thesis is the procedure for the award of public contract with extensive subject matter of the construction works. In accordance with assumed level of fulfillment, over limit public order is awarded in open procedure. Afterwards, the analysis of submitted bids from contenders was created in parallel with an assessment of the impacts, which have occurred during the implementation of the fulfilling of the public contract. The thesis is examined from the perspective of the Act No. 137/2006 Coll., on Public Procurement, as amended. Future recommendation is the establishment of new amendment to that Act, with the aim to increase the evaluation criterion of economic advantageousness of tenders.

This doctoral thesis titled Effectiveness of marketing activities in preparatory phase of construction life cycle deals with the possibility of more effective marketing activities in preparation for construction. The main goal of the thesis is to analyze the current state of the use of marketing activities from the view of a building contractor and building users, to propose a methodology of indicators suitable for assessing the effectiveness of marketing activities in preparatory phase of construction life cycle. Effectiveness is assessed from the perspective of selected entities operating in the Czech construction market - building contractor and building user.

Anläggningsprojekt är idag allt fler på grund av att den infrastruktur som byggdes på mitten på 1900-talet inte längre uppfyller dagens ställda krav. I takt med att större entreprenader utförs idag, krävs även större resurser och bättre samspel mellan beställare och entreprenörer. Entreprenadsumman för ett betongbroprojekt är väldigt stark förknippat med mängden ÄTA–arbeten och avvikelser. ÄTA–arbeten kan gå i olika riktningar, till exempel från underentreprenör mot beställare och tvärtom. I denna studie ligger fokus på entreprenörens ÄTA–arbeten gentemot beställaren och avvikelser som uppstår i produktionen. Syftet med studien är att identifiera de vanligaste ÄTA–arbeten och avvikelser som förekommer i olika betongbroprojekt för att undersöka hur dessa påverkar entreprenadsumman samt hur de i framtiden skall hanteras av entreprenören så att de inte upprepas i kommande projekt. Till en början har en litteraturstudie gjorts för att öka kunskapen kring ämnet. Därefterhar en fallstudie utförts av fyra tidigare betongbroprojekt. Den centrala delen av fallstudien har varit en kvalitativ undersökning, med intervjuer samt en enkätundersökning. Det har hållits 10 intervjuer med olika platschefer, en jurist och en arbetschef, samtidigt har 55 tjänstemän från fallföretaget deltagit i enkätundersökningen. I den kvantitativa delen har en sammanställning gjorts av samtliga ÄTA–arbeten och avvikelser som uppstått i de betongbroprojekt som studerats. Därefter har de ÄTA–arbeten och avvikelser som upprepats i dessa betongbroprojekt identifierats. Studien visar att ÄTA–arbeten oftast uppstår på grund av brister i beställarens förfrågningsunderlag. Geotekniska undersökningar och tekniska lösningar föreskrivna av beställaren är det som vanligen föranleder ÄTA–arbeten. Även entreprenadformen är avgörande för mängd och typ av ÄTA–arbeten. I en utförandentreprenad är det mycket mer likställda ÄTA–arbeten och när det gäller en totalentreprenad är de vanligaste ÄTA–arbetena föreskrivna tilläggs- och ändringsarbeten. Det är sällan lönsamt med många ÄTA–arbeten i betongbroprojekten, däremot ökar det projektensomsättning vilket får ses som positiv. Avvikelser förekommer oftast på grund av dålig planering och kommunikation. Bristfälliga arbetsberedningar och missade kontroller är andra orsaker till att avvikelser förekommer. Det är oftast entreprenörens eget fel attdet uppstår avvikelser. Avvikelserna har då alltid en negativ inverkan på projektetsslutkostnad i och med att kostnaden inte läggs på entreprenadsumman, det vill säga att entreprenören avhjälper avvikelser på egen bekostnad. De vanligaste ÄTA–arbetena förekommer kring brokonstruktionens grundläggning,oftast på grund av att de geotekniska undersökningar som gjorts, har gjorts fel eller inte i tillräcklig omfattning. När det kommer till avvikelser är de vanligast i samband med armeringsarbeten och betonggjutningar. Dyrare avvikelser förekommer men inte i någon större utsträckning. Genom att lägga mer fokus på planering, kommunikation, involvering och upprätta bättre arbetsberedningar kan negativa effekter på entreprenadsumman på grund av ÄTA–arbeten och avvikelser undvikas. / Various plant projects are today more common because the infrastructure built in themid-1900s no longer meet today's set requirements. As major contracts are carried out today, greater resources and better interaction between client and contractor are also required. The contract sum for various concrete bridge projects is very strongly associated with the amount of contract changes and deviations. Contract changes can go between different entrepreneurs for example from a subcontractor against the clientand vice versa. In this study the focus is on contract changes from the main entrepreneur towards the client and deviations that occurs in the production. The purpose of the study is to identify the most common contract changes and deviations that occur in different concrete bridge projects to investigate how these affect the contract sum and how they should be handled by the entrepreneur in the future so that they are not repeated in upcoming projects. Initially a literature study has been done to increase knowledge about the subject. Then a case study has been carried out on four previous concrete bridge projects. The central part of the case study has been a qualitative investigation, where interviews have been held and a survey has been conducted. There have been 10 interviews with various site managers, a lawyer, and a supervisor, while 55 officials from the case company have participated in the survey. In the quantitative part, a compilation of contract changes and deviations that has occurred in the concrete bridge projects that was studied has been done. Then the contract changes and deviations that was repeated in all the studied concrete bridge projects has been identified. The study shows that contract changes occur most often because of deficiencies in the clients request documents. Geotechnical investigations and technical solutions prescribed by the client are what usually prompt contract changes. The contract form is also crucial for the amount and type of contract changes. In a contract that is based on AB 04 it is much more preserved contract changes and when it comes to a general contract based on ABT 06, the most common contract changes are prescribed alterations and additional works. It is rarely profitable with many contract changes in concrete bridge projects, yet it increases the revenue of the projects, which may be positive. Deviations occur most often due to poor planning and communication. Inadequate work preparations and missed controls are other reasons for the presence of deviations. It is usually the entrepreneur’s fault that there are a lot of deviations. Deviations always has a negative effect on the project’s final cost since the cost for it is not added to the contract sum, which means that the entrepreneur remedies deviations at their own expense. The most common contract changes occur around the groundwork of the bridge construction, usually because the geotechnical investigations carried out by the client, have been done wrong or not enough. When it comes to deviations the most common are in connection with reinforcement work and concrete castings. More expensive deviations occur but not to a greater extent. By focusing more on planning, communication, involvement and establishing better work preparations, negative effects on the contract sum due to contract changes and deviations can be avoided.

Lima es el principal escenario de desarrollo de proyectos de vivienda, por ello es una importante fuente de oportunidades para las empresas constructoras. Un significativo porcentaje de estas lo conforman pequeñas y medianas empresas, que buscan estrategias para competir en el mercado. Por ejemplo, la canalización de sus actividades a través de la subcontratación. En este escenario, suelen presentarse dificultades en el proceso de valorización de los subcontratistas de las partidas de acabados, dado que son tareas que requieren de mayor tiempo y detalle para validar. Estos problemas son resueltos de manera sintomática porque no se trabaja con herramientas que permitan anticiparlos ni entenderlos en su totalidad. El objetivo de la presente investigación es desarrollar una propuesta de solución frente a los problemas identificados, a través de la implementación de una herramienta de programación visual (Dynamo) dentro de un entorno de trabajo BIM, que permita optimizar el tiempo en el proceso de valorización de subcontratistas de acabados en edificios multifamiliares menores de 10 pisos de NSE A y B ejecutado por una PYME constructora en Lima Metropolitana. Se realizaron entrevistas a profesionales encargados de realizar las valorizaciones para identificar las principales deficiencias que se presentan en este proceso y de esta forma, plantear la propuesta de solución. Finalmente, se realizó la validación de la propuesta de solución a través del juicio de expertos, como resultado de las opiniones emitidas por estos y su nivel de interés percibido se concluyó que la propuesta sería de gran aporte en una posible implementación. / Lima has been the main scenario for the development of building projects, which makes it an important source of opportunities for construction enterprises. A significant percentage of these are made up of small and medium-sized enterprises (SMEs), which constantly seek strategies to compete in the construction industry. One of these is assigning their activities through subcontracting. In this common practice, difficulties often arise in subcontractor’s schedule of values of finishes process, since they are tasks that demand more time and detail to track the progress, even more critical situation in projects with a reduced site-based staff. These problems are solved symptomatically because they do not work with tools for anticipate or understand them entirely. The objective of this research is to develop a proposed solution to the problems identified, through the implementation of a visual programming tool (Dynamo) within a BIM environment, for optimize time in subcontractor’s schedule of values of finishes process in less than 10-story multi-family buildings of Socioeconomic Status A & B executed by a construction SME in Metropolitan Lima. In order to identify the main deficiencies that appears in traditional process, interviews were conducted with in-charge professionals of subcontractor’s schedule of values of finishes. Then, collected information was analyzed to propose a solution for the problem. Finally, the proposed solution was validated through expert judgment, which through the opinions expressed by the professionals and their perceived level of interest, it was concluded that the proposal would be of great contribution in a possible implementation. / Tesis

Safety and protection of health on construction sites and protection of third parties during construction is a complex problem. It is affected by contractor’s policy on ensuring thorough abidance to security requirements but, in the first place it is affected by submitters and their irresponsible appreach to protection of life and health of the construction workers. They believe that ensuring safe work enviroment would reset in increased cosi of the construction. This doctoral thesis answers the question how to guarantee safety on construction sites. The main purpose is to show that early detection of risks does not increase the construction costs but ensures safety of workers protection of third parties. Finally, the doctoral thesis provils methodology, which guides the contractor in how to proceed in order to meet the budget, schedule and safety requirements. In regard of the variety of different construction sites and works this docáral thesis focuses explicitly on line constructions.

Small businesses growth and profitability is a national problem in South Africa (SA) and the Emerging Contractors (ECs) in the construction industry in Gauteng Province are no exception. The SA government expect ECs to become the main players in economic transformation and growth, job creation and income generation. However, ECs fail to live up to the expectations as some are characterised by low performance levels and are at risk of business closure. The purpose of this research is to examine the perceptions of Small Business Executives (SBEs) on determinants of business performance so that a performance model that could guide ECs within the construction business is developed. The researcher used a mixed approach to examine the perceptions of SBEs on determinants of ECs’ performance by applying both qualitative and quantitative research approaches. The population from which the sample was drawn comprised of 1890 urban based ECs registered with CIDB in the construction industry in Gauteng. Systematic random sampling was utilized and a sample size of 501 ECs was used. A structured questionnaire and interview guide were administered as the data collection instruments. A pilot survey was conducted where 2 key informants (SBEs) and 15 respondents (SBEs) were interviewed as representatives of ECs. A survey was used to assess the four hypotheses in the study. Content analysis was used to identify themes that emerged from qualitative data. The analysis of qualitative data demonstrated the perceptions of SBEs that financial factors, manpower, materials, machinery and equipment, project implementation, quality of work, legal and environmental and strategic planning were the main determinants that should be addressed when setting up and running construction businesses to reduce the negative impact on business performance. Based on the perceptions of SBEs, in quantitative, the univariate and multivariate statistical methods were performed to measure the level of significance between and among the performance determinants were tested at 5% confidence interval. Multiple linear regressions carried out based on the perceptions of SBEs identified strategic planning, project implementation and project performance as the most statistically significant factors in predicting the performance of ECs in Gauteng Province. The results from both qualitative and quantitative methods were synthesised and analysed through data transformation, typological development and case study analysis and the perceptions of respondents indicated a strong agreement between the qualitative and quantitative results. Based on multivariate results which were a result of the perceptions of SBEs, a performance prediction model was developed which is the core contribution of the study. The structure of the model, how it is used, its advantages and disadvantages were presented. The model provides a platform upon which ECs could predict performance and this would benefit ECs, clients, community and policymakers. In conclusion, the study established three significant determinants that include strategic planning, project implementation and project performance as highly relevant variables to improve construction business performance. Based on the perceptions of the respondents, the study recommends ECs to acquire and develop financial management skills that would enable them to understand and manage financial requirements that stakeholders such as financial institutions need in the areas of budgeting and cash flow management, bookkeeping knowledge, financial policies and controls and project pricing strategy. On the shortage of skills, the study recommends SBEs to take an initiative role in training employees, motivating and retaining competent workforce. The government need to establish technical colleges for training workers (apprenticeship) in order to equip them with appropriate industry knowledge, skills and experience. Lack of collateral security was widely reported by most SBEs and the study recommends the formation of a sector bank that would support emerging contractor businesses. / Business Management / D.B.L.

依據我國國防報告書指出，國防部近年基於我國「國防法」之立法精神，結合行政院「擴大內需」與「激勵市場」之政策指導，逐步推展各項「國防資源釋商」規劃及相關作為，藉以將國防資源挹注國內市場，提升我國科技及工業水準。 依現階段我國國防資源釋商規劃，除了增加國防預算投注國內金額比例，期達成有效提高民間參與國防建設之意願與能力，促進國家產業及經發展等目的，並且逐步落實一般性軍需全部向國內採購，現有武器裝備之非核心維持能量，亦逐步規劃釋出民間承接；新武器裝備需求，民間能自製者，則不向外採購，軍方得不建立能量；運用「減少軍中自辦業務」、「降低國外採購金額」及「擴大釋商預算規模」等3原則，進行國防資源配置調整，以擴大國內釋商規模。 以「國有民營」計畫為例，國防部自民國88年進入實驗規劃階段，並於民國90年11月依「國防法」第22條授權制定完成「國防部科技工業機構委託民間經營管理辦法」，業經行政院召開跨部會會議審核通過，於民國91年3月1日施行，據以加速國有民營個案推動。國防部現已完成軍備局第302經理品生產工廠轉型，成為軍方國有民營成功首例，未來可針對機敏性低且軍民通用性高之國防科技工業機構，逐依執行成效檢討辦理委託民營；本研究旨在探討國防資源釋商政策─國有民營案執行成效，並提出未來策略規劃精進建議。 / The National Defense Report indicates that the MND has been prosecuting various privatization plans of national defense resources. These plans are based on the conception of the National Defense Act and are to cooperate with the Executive Yuan's policy to expand domestic needs and to stimulating market. It also aims to inject capital to the domestic markets and to improve domestic technology levels. MND will reduce military engagement and foreign procurement expenditure to expand privatization budget. The capital injection into domestic market is intended to encourage non-military industries to participate in defense developments and to promote domestic economics. General military necessities will continuously be purchased from domestic supplier and the maintainance of the subordinate military components will be taken over by non-military industries. The future purchase of new weapons and equipment which can be domestically manufactured will be exclusive to non-military suppliers in Taiwan. Take the Government-Owned Company-Operated project (GOCO) for example. MND has initiated the test-run phase of the project since 1999. In November 2001, MND promulgated the draft of “Regulations of the Operation and Management of National Defense Technology Institutions by Private Entities”, according to Article 22 of the National Defense Act. The draft has been reviewed and approved by the Executive Yuan and took effect on March 1 2001 to boost the promotion of GOCO system. MND has completed the privatization of Military Necessity Factory No. 302, which is the first success of GOCO. MND will keep privatizing national defense industry of low confidentiality and high common utilities. This thesis aims to analyse the policy of defense resources privatization, by virtue of the case study of GOCO, and to offer suggestions for policy formulation in the future.

L’hypothèque légale de la construction est le principal mécanisme de protection des créances des intervenants de l’industrie de la construction. Par l’adoption de ce régime, le législateur a voulu protéger l’intégrité économique de cette industrie. Par contre, l’utilisation de notions mécaniques plus ou moins efficaces dans la mise en œuvre de l’hypothèque légale, la prolifération d’outils de contournement contractuels et les mécanismes de protection des propriétaires nuisent à l’efficacité du régime légal à protéger les créances des sous-traitants. Des correctifs pourraient néanmoins être apportés pour restaurer l’équité du régime légal. Par ailleurs, lorsqu’un immeuble appartient à l’État ou l’un de ses mandataires, il devient pratiquement impossible pour un sous-traitant d’exercer ses recours hypothécaires compte tenu des privilèges et immunités dont jouissent l’État et de ses mandataires. Les biens affectés à l’utilité publique des personnes morales de droit public non-mandataires de l’État jouissent également d’une grande protection, surtout dans le domaine municipal. Ceci rend bien illusoire tout recours hypothécaire intenté par un sous-traitant malgré le fait le législateur cherchait justement, par le maintien d’un régime légal, à protéger leurs créances. / The construction hypothec is the main mechanism for the protection of the claims of every participant in the construction industry. With the adoption of this legal regime, the Quebec legislator tried to protect the economic integrity of this industry. However, the use of notions more or less efficient for the execution of this legal regime, the increase of contractual mechanisms which avoid the application of the legal regime and legal dispositions which protect the owners harm the efficiency of the legal regime to correctly protect subcontractor's claims. Nevertheless, some correctives can be found to restore the legal regime's equity. Moreover, when a immoveable is owned by the State or any of its agents, it is practically impossible for a subcontractor to exercise his hypothecary rights because of the State's privileges and immunities. The property appropriated to public utility of the legal persons established in the public interest which are not agents of the State enjoy also a strong protection, particularly in the municipal sector. In any case, it is rendering illusory the exercise by a subcontractors of any of his hypothecary rights despite the fact that the legislator's goal, by maintaining this legal regime, was precisely to protect their claims.

Climate change has come to be understood as a deleterious phenomenon, which threatens business, society and ecological systems, thus making it imperative to understand its impact on human, social and economic activities as well as the impact of these activities on climate change. Against this background, this research sought to determine climate change intervention strategies in the mining supply chain in general, specifically focussing on opencast mining contracting and plant hire companies’ practices. This focus on the mining industry was driven by its importance in South Africa and globally, despite its significant direct and indirect contribution to climatic changes. The mixed-methods multiple case study focused on the climate change management of the Mutual Construction Company Group of Companies (MCCGC), an open cast toll mining firm and equipment supplier. Limited to two sites, Pilanesberg Platinum Mines (PPM) and Tharisa Minerals (Tharisa) Mines, the researcher gathered data through interviews, questionnaires, observations and document review. Data was analysed through deductive content analysis. The research made three major findings: (i) the MCCGC, like its principals PPM and Tharisa, does not have an explicit climate change management strategy. Instead, climate change is managed indirectly through implicit strategies seeking to manage environment, health and safety concerns of the mines, (ii) as a contractor, the MCCGC has had to adopt PPM and Tharisa’s implicit approach to climate change management strategies to meet contractual obligations, instead of an explicit approach and, (iii) the MCCGC and its principals’ commitment to environment, health and safety management, and implicitly climate change management, is not mere rhetoric but is being put into practice. The research concluded that MCCGC’s lack of expressed climate change management intentions and practices exposed the firm to climate change risks, most notably financial risks and reputation risks. Financial risks arise from possible ex post climate change liability. In addition, MCCGC is risking its contract tenures, particularly if the two mines change ownership and the new owners insist on an explicit rather than implied climate change strategy with all its suppliers. Reputational risks arise from the possible failure to attract new clientele and investors who may perceive MCCGC as a risky partner, due to an inept climate change intervention strategy / College of Agriculture and Environmental Sciences / M. Sc. (Environmental Management)

This thesis focuses on the theme of preparation and management of construction work contract in its theoretical and empirical level. Theoretical part deals with the description of contractor’s preparation for construction in the form of supply, pre-production and production preparation. It also deals with the issues of planning in the form of structuring of a building project and its duration, including the description of schedule planning methods. Theoretical part ends with a passage about automated preparation and construction implementation, together with a definition of basic terms concerning private and public procurement. Practical part answers the question of description, analysis and organization of particular construction contract and together with contractor’s administrative treatment of construction preparation meets the appointed target. Closing part consists of a suggestion of methodology for processing contractor’s preparation using Contec software.