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Author: haroonkhan

  • Terminologies in Arch Work

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    by

    haroonkhan
    in

    Following are the terminologies used in arch work (Fig. 19.1). Figure 19.1 Various parts of an arch 1. Abutments These are the outermost supports of an arch from which the arch starts. That is, this is the wall which supports the arch. 2. Springing Line It is the horizontal line joining the two springing points. 3.…

  • Stability of Arches

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    by

    haroonkhan
    in

    Basically the stability of an arch depends on the friction developed between the wedge-shaped blocks and the cohesion of the mortar. The stability is disturbed by one of the following reasons: 1. Crushing of Arch Material Crushing of arch material can be safeguarded by taking the following precautions: 2. Sliding of Blocks In order to…

  • ARCHES

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    by

    haroonkhan
    in

    An arch is a mechanical arrangement of wedge-shaped blocks of stones or bricks mutually supporting each other and in turn supported at the ends by piers or abutments. However, arches made of steel and RCC are built as a single unit without the use of wedge-shaped units.

  • INTRODUCTION

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    by

    haroonkhan
    in

    cArch and lintel are provided above doors, windows and passages. The function of an arch and a lintel is to carry the weight of the structure above the opening. In an arch because of the shape, the blocks support each other by the mutual pressure of their own weight and the structure remains in position…

  • ERECTION OF PRE-FABRICATED MULTI-STOREY FRAME BUILDINGS

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    haroonkhan
    in

    Multi-storey buildings may be built of standardised construction with column spaces based on some modular grid (say 6 m × 9 m or 6 m × 6 m). Based on dimensions, multi-storey buildings are erected by means of tower or derrick cranes placed on one or both sides of the frame (Fig. 18.2). Figure 18.2 Diagram…

  • Pre-assembly of Pre-fabricated Concrete Structural Units

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    by

    haroonkhan
    in

    It is difficult to haul large-size buildings because of their bulkiness and large mass. Thus, these structural units have to be made as transportable components which could be assembled by erection units at construction site. Reinforced cement concrete structural units are manufactured at areas within the radius of truck haulage. They are generally transported as…

  • Delivery and Storage of Pre-fabricated Structures

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    by

    haroonkhan
    in

    Structural units are delivered to erection zones by most effective mechanised procedures and allowing for haulage distance, availability of approach roads and conditions of in-site roads. Depending on the character of application of structural units, they are transported from the place of manufacturing to construction sites and unloaded at a pre-assembly area. Pre-assembly area is…

  • Design and Manufacturing

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    haroonkhan
    in

    While designing pre-fabricated buildings, manufacturing and effective installation techniques should be taken into account. That is, the design of structural parts, utilisation of structural parts and their joints should be installed with minimum use of materials and manpower for manufacture and erection. In fully pre-fabricated construction, it is the practice to use larger elements while…

  • PRE-FABRICATED BUILDINGS

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    by

    haroonkhan
    in

    A general discussion on different building units which could be pre-fabricated is made in Chapter 9. Pre-fabricated buildings are constructed based on the articulated structure concept. Articulated structure means, the separation of a structure into two or more elements and join the entire structural elements such that it functions as a monolithic structure. The elements…

  • Construction of Tall Buildings

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    by

    haroonkhan
    in

    Important aspects which are to be considered in the construction of RCC tall buildings are given below: