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1、Lesson PlanReviewNew Words and PhrasesReading and TranslatingUnit FourteenClassroom Exercises,Review,Unit Fourteen Prefabricated Construction 单 元 14 预制装配式结构,The well-known expression “time is money” voiced repeatedly in the business world, has greatly influenced the trend towards far more rapid meth
2、ods of construction.,The well-known expression “time is money” voiced repeatedly in the business world, has greatly influenced the trend towards far more rapid methods of construction.众所周知“时间就是金钱”。这句话在商界被反复倡导，对推行更快速的施工方法产生了巨大的影响。,Delays, often associated with traditional building, usually represent
3、loss of trade or rent. The disruption of road and rail traffic, so often experienced when a flyover, an underpass or a service is being constructed, can be minimized in those constructions incorporating prefabrication.,Delays, often associated with traditional building, usually represent loss of tra
4、de or rent. The disruption of road and rail traffic, so often experienced when a flyover, an underpass or a service is being constructed, can be minimized in those constructions incorporating prefabrication.传统建筑业常有拖延工期的问题，而拖延工期则意味着给房屋的出售或租赁带来经济损失。如果在建造立交桥、地下通道或服务设施采用预制结构，就会把经常发生的公路或铁路交通的中断情况降低到最小程度。
5、,So it is understandable that prefabricated construction has found favour in both industry and commerce. Such construction is even more justified in an attempt to solve the serious problem of providing sufficient houses and flats quickly enough to meet the needs of an ever expanding population. Alre
6、ady, tremendous strides forward have been made in this sector of building.,So it is understandable that prefabricated construction has found favour in both industry and commerce. Such construction is even more justified in an attempt to solve the serious problem of providing sufficient houses and fl
7、ats quickly enough to meet the needs of an ever expanding population. Already, tremendous strides forward have been made in this sector of building.所以预制装配式结构理所当然地在工业和商业领域中受到青睐。在努力解决快速提供足够的房屋或公寓来满足不断增长的人口的需求这一严重问题方面，预制装配式结构被证明是更加可行的，并以及取得了长足进展。,Prefabrication is by no means a new idea, but in the pas
8、t, unimaginative uniformity in design, together with limited materials, led to a natural distaste for this form of construction.,Prefabrication is by no means a new idea, but in the past, unimaginative uniformity in design, together with limited materials, led to a natural distaste for this form of
9、construction.预制结构并非新构想，但是在过去，由于在设计上缺乏想象千篇一律，再加上材料有限，自然就使得这种施工方式不受欢迎。,Recent years, however, have produced a revolution in this field, as a result of new techniques, wider ranges of materials and a far more variety in the shapes and sizes of prefabricated units. In fact, nowadays, there remains very
10、little in the world of building and civil engineering that cannot be constructed effectively and attractively by means of prefabricated units.,Recent years, however, have produced a revolution in this field, as a result of new techniques, wider ranges of materials and a far more variety in the shape
11、s and sizes of prefabricated units. In fact, nowadays, there remains very little in the world of building and civil engineering that cannot be constructed effectively and attractively by means of prefabricated units.然而近年来，由于新技术的出现，材料的选择范围更加广泛，以及预制构件的形状、型号多种多样，致使这一领域发生了一场革命。事实上，在今天的工业于民用建筑中，几乎所有的施工都能
12、采用预制构件达到高效而完美的效果。,Many large building contractors have developed their own organizations of prefabricated construction for houses and flats, and have often been successful in securing contracts in direct competition with traditional building.,Many large building contractors have developed their own
13、organizations of prefabricated construction for houses and flats, and have often been successful in securing contracts in direct competition with traditional building 许多大建筑承包商已建立了他们自己的预制拼装建筑机构，在同传统的建筑业直接的竞争中，他们常常在中标方面获得成功。,Generally speaking, prefabricated construction in relation to buildings is di
14、vided into two classes. Where the prefabricated units are entirely or almost entirely produced in a factory and transported to the site, the method of construction is known as factory industrialized building. On the other hand, if the component parts are mainly produced by the contractor in a yard a
15、djacent to the site, it is known as on-site industrialized building.,Generally speaking, prefabricated construction in relation to buildings is divided into two classes. Where the prefabricated units are entirely or almost entirely produced in a factory and transported to the site, the method of con
16、struction is known as factory industrialized building. On the other hand, if the component parts are mainly produced by the contractor in a yard adjacent to the site, it is known as on-site industrialized building. 一般来说，与建筑物相关的预制装配式结构分为两种。若预制构件完全或几乎完全由工厂生产，并被运到施工现场，这种施工方法就是工厂预制。另一方面，如果组装构件主要是由承包人在施工
17、现场附近的场地制作出来的，这种方法称为现场预制。,The main advantage of factory industrialized building is that the prefabricated units can be produced to a very high standard of precision and a consistently high quality. Consequently, the tolerance margins, which are so necessary in traditional building methods, can be greatly reduced. Of course, careful planning and diligent supervision by the designer, together with the utmost standardization, are essential to attain these objectives.,
