Author: Haroon Khalil
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Steel
In general, steel framework supports all loads. In this type, all columns, beams and girders in the framed structure are of steel section. Adequate bracing is needed for these structures in order to resist the wind and earthquake forces. For these structures, fire-proof and other light materials are used for partitions and exterior walls if…
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Timber
Use of timber for framed structures offers several advantages like beauty, versatility, durability, low cost, high strength-to-weight ratio, excellent electrical insulation and high shock absorption capacity. Variety of range of finishes can be provided to satisfy decorative and protective purposes. In wooden frames, the walls are conventionally built with slender studs spaced about 40 cm…
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Materials Used for Framed Structures
As discussed earlier, the materials used for framed structures, viz., wood, metal and RCC, are discussed below.
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CONCEPT OF FRAMED STRUCTURES
Principles of Framed Structures Framed structures are the structures which are formed by connecting a series of horizontal and vertical structural members in suitable positions. The framed structures primarily comprise of columns and beams. Columns are connected by beams at floor and roof levels. The floors are divided into rooms and passages of required sizes…
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INTRODUCTION
New technologies for vertical transportation and high socio-economic levels of urban growth have given room to tall buildings. Further, large-scale industrialisation and exhaustive land cost resulted in the expansion of building programme. Framed structures are comprised of series of frames with horizontal and vertical components. These framed structures concept are effectively used in the construction…
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Quality of Concrete
For floor and roof slabs, it is desirable to use concrete of low shrinkage characteristics.
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Slip Planes
Smooth slip planes are provided between the roof slabs and brick walls. Because of this arrangement, cracks will be developed only at the re-entrant corners. These cracks can be easily covered after the complete construction is over. Figure 17.20 Expansion joint at foundation level Figure 17.21 Sliding joint
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Sliding Joint
Sliding joint is provided when one part of a structure has a tendency to slide over the other due to variations in temperature and moisture content. Figure 17.21 shows the details of a sliding joint at floor level.
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Isolation Joint
Isolation joint is similar to expansion joint but provided under the following conditions: Figure 17.18 Expansion at corner of walls Figure 17.19 Expansion joint at roof level