tailieunhanh - Project Planning and Control Part 7

Một điều chủ yếu của một công trình dân dụng và bản chất xây dựng và các dạng khác là có liên quan với xây dựng cơ khí - cả hai đềuthiết thực và có thể được áp dụng cho các tình huống thực tế. | 28 Worked examples The previous chapters describe the various methods and techniques developed to produce meaningful and practical network programmes. In this chapter most of these techniques are combined in two fully worked examples. One is mainly of a civil engineering and building nature and the other is concerned with mechanical erection -both are practical and could be applied to real situations. The first example covers the planning manhour control and cost control of a construction project of a bungalow. Before any planning work is started it is advantageous to write down the salient parameters of the design and construction or what is grandly called the design and construction philosophy . This ensures that everyone who participates in the project knows not only what has to be done but why it is being done in a particular way. Indeed if the design and construction philosophy is circulated before the programme time- and cost-saving suggestions may well be volunteered by some recipients which if acceptable can be incorporated into the final plan. Worked examples Example 1 Small bungalow Design and construction philosophy 1 The bungalow is constructed on strip footings. 2 External walls are in two skins of brick with a cavity. Internal partitions are in plasterboard on timber studding. 3 The floor is suspended on brick piers over an oversite concrete slab. Floorboards are T G pine. 4 The roof is tiled on timber-trussed rafters with external gutters. 5 Internal finish is plaster on brick finished with emulsion paint. 6 Construction is by direct labour specially hired for the purpose. This includes specialist trades such as electrics and plumbing. 7 The work is financed by a bank loan which is paid four-weekly on the basis of a regular site measure. 8 Labour is paid weekly. Suppliers and plant hire are paid 4 weeks after delivery. Materials and plant must be ordered 2 weeks before site requirement. 9 The average labour rate is 5 per hour or 250 per week for a .