Structural design based on project cost control _1 -

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Structural design based on project cost control

Unification should be controlled as much as possible in the following ratio of reinforcement steel ratio in the economy range. ① reinforced concrete rectangular plates: P for a 0.4 ~ 0.8 ② rectangular reinforced concrete beams: P a 0.6 ~ 1.5 ③ reinforced concrete T-section beam: P a design stage 0.9 ~ 1.84 Cost optimization in engineering design, process technology must be better interaction with the economic unity of opposites, in strict accordance with the feasibility study report and investment estimates do a good job of technical and economic comparison a number of options, and then design. In addition, the design should fully grasp the design phase of project cost optimization measures, the maximum possible optimized design to achieve safe, reliable and economical high degree of unity. 4.1 Optimal Design Using Value Engineering Value Engineering is also known as value analysis, is a function of the building to achieve this functionality with the costs (cost) ratio, the formula expression is: a formula: V - value of the coefficient; F - function coefficient; C - the cost factor. The purpose of value analysis is to seek to correctly handle the cost function and the best configuration. Its application mainly in the following ways: (1) to improve function and reduce costs; (2) function the same, reduce cost; (3) improve the functionality, cost the same; (4) feature a slight decrease, significant cost reductions; (5) feature a substantial increase in the cost slightly. Value engineering in design has unique advantages, structural engineers should make active use of value engineering, design and reasonable in value analysis. Designed to promote the so-called limit of 4.2 limits the design is in accordance with the approved feasibility study report and investment control of the preliminary design estimate,[link widoczny dla zalogowanych], according to the approved total budget for the control of the preliminary design of technical design and construction design. At the same time, guarantee the achievement of the professional use of functions in the premise, according to the investment allocation of quota control design. Strictly control the unreasonable design changes to enhance the vertical control throughout the design process and design departments lateral control to ensure that the total investment limit is not exceeded the method [7]. Design of the control limits of engineering design object is a static investment projects, investment decomposition and engineering design limits the amount of control is an effective way to implement and main methods. The principle is validated on the stage of design and engineering investment in the amount of decomposition to the professional first and then break into work units and divisions, through the layers of the design limit on investment ultimately better control _8]. 4.3 design standards to promote standardized design from the construction of practical experience and scientific research, is the construction must follow the scientific evidence, is an important national design specifications for construction survey, design, construction and acceptance of an important basis. With the social development and the advancement of technology, we must vigorously promote the implementation of standardized design. Promote the construction of standard design, can shorten the design cycle to achieve the unification of engineering materials ingredients, speed up the construction speed, construction quality assurance, effectively reducing the project cost. 5 Conclusion design phase of the project cost cost control is the key to control the whole process. Only the correct concept of cost control and effective integration into the design to building structures, active use of value engineering, design limits, the standard design optimization measures, by firmly grasping the control estimate, budget, budget of the essentials in order to achieve improved design quality reduce the project cost. Only the cost of 472 Changchun University of Technology (Natural Science) Vol 29 key control established in the design stage, using scientific and rational design methods, can achieve real cost control.

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