Building maintenance is gaining an increasing worldwide recognition in many
fields of study.as a result; a remarkable shift in building maintenance management from
preventive approach to predictive approach is taking a place now a days. That is ach
ievable
through building of an evaluative model to assess a variety of alternative decisions and
make the right decisions, taking in the consideration building condition and the available
budget for maintenance.
In Syria, there is lack of effective building maintenance for governmental buildings
because we use an approach depends on doing the work after the fault happened, that leads
to deteriorating in the all building's parts.
In this paper, we study maintenance reasons and importance degree for every single
components by designing questionnaire, divide the building in to its essential parts and
components, and link them to maintenance works.
At the end, we get mathematical models called deterioration models assist in
predictable maintenance works and distributing the budget, and to make sure about validity
of these models we apply them in the dormitory in Tishreen University.
Earthmoving is the process of moving and processing soil from one location to another to alter an existing land surface into a desired configuration. Highways, dams, and airports are typical examples of heavy earthmoving projects. Over the years, con
struction managers have devised ways to determine the quantities of material to be moved from one place to another. Various types of soil (soft earth, sand, hard clay, …, etc.) create different level of difficulty of the problem. Earthmoving problem has traditionally been solved using mass diagram method or variety of operational research techniques. However, existing models do not present realistic solution for the problem. Multiple soil types are usually found in cut sections and specific types of soil are required in fill sections. Some soil types in cut sections are not suitable to be used in fill sections and must be disposed of. In this paper a new mathematical programming model is developed to find-out the optimum allocation of earthmoving works. In developing the proposed model, different soil types are considered as well as variation of unit cost with earth quantities moved. Suggested borrow pits and/or disposal sites are introduced to minimize the overall earthmoving cost. The proposed model is entirely formulated using the programming capabilities of VB6 while LINDO is used to solve the formulated model to get the optimum solution. An example project is presented to show how the developed model can be implemented.
Waste resulting from construction operations affect the project, so that it adds
financial values of the project, without leading to any improvement in it,or to improve the
functional capabilities of the project, and lead to increased quantities re
quired, thereby
increasing the cost of the project and the accumulation of environmentally harmful solid
waste.
In this research, We will discuss the most important factors affecting the increase
waste in the Syrian construction projects by identifying the most important causess that
lead to an increase in waste materials, as well as identify the most important causes that
lead to increased waste associated with design, storage or supervision. These factors will
be arranged to determine the most effective on the project. At the end of the research we
will formulated mathematical model to Optimize cutting of reinforced steel bars and
Lindo program will be used to solve this model. It has been shown by the study that a
large proportion of waste is resulting from random cutting bars.
Building maintenance is gaining an increasing attention in the field of scientific
research and there was a need for the use of new technologies in maintenance
management, , as the facility management deal with a large amount of information relatin
g
to maintenance, which includes drawings and specifications, lists, and reports, and the use
of paper files leads to decrease the efficiency and create a shortage of data and information.
We offer in this research tool to manage the maintenance process by using the BIM
through linking deterioration models and three-dimensional model of the facility to be
maintained, then compensate the external investigation data for maintenance work in these
models, to get at the end of this research and with the help of the possibilities offered by
Revit database to an upcoming maintenance items and arrange them according to their
importance and impact on the facility , the estimated budget for the periodic maintenance
and distribution of this budget on the various construction elements , the development of
resources plan for next year and up to the knowledge database of maintenance will help in
determining the supplier lifecycle and the coefficient of replacement.
