प्रश्न– मिट्टी का कार्य (Earthwork), जिसमें ब्लैंकेटिंग लेयर (Blanketing Layer) भी शामिल है, के निष्पादन के लिए विभिन्न गुणवत्ता नियंत्रण उपायों (Quality Control Measures) का संक्षेप में वर्णन कीजिए।
Showing posts with label Civil Engineering - Works. Show all posts
Showing posts with label Civil Engineering - Works. Show all posts
Q. & Ans - What are the main cause of crushing of PRC sleeper in washable aprons and what are the remedial measures?
Q. What are the main cause of crushing of PRC sleeper in washable aprons and what are the remedial measures?
Ans - The washable aprons are constructed on the concrete raft. The PRC sleepers placed on the raft and after palcing of sleeper the crib is casted one bitumen sheet also provided under the sleepers at both ends for facilitating the elastic medium between sleeper and raft.
Now during casting of crib the concrete as well as cement sullary flows under the middle of sleeper which give the rigid support to the sleeper resulting to this the sleeper becomes centre rigid and ends on elastic support due to this uneven base the sleeper sheared while wheel load comes on the sleeper .
Short Notes on Selection of ceramic/vitrified tiles for building work
Selection of ceramic/vitrified tiles for building work : -
Floor and wall tiles of appropriate design, color and texture enhance the touch and feel of a building. However, the aesthetic improvement potential may not be achieved if proper tiles are not selected. In public area there is a need to choose good tiles of reputed manufacturers confirming IS: 15622 having wear resistance and anti skid properties, modern design, color combination and scheme of laying. Types of Pressed Ceramic/Vitrified Tiles:-
i) Ceramic Wall Tile: These tiles have high water absorption, due to high water absorptions these tile stain after contact with liquids.
Short Note On Controlled Concretes
Controlled Concretes :-
These mixes the performance of the concrete is specified by the designer but the mix proportions are determined by the producer of concrete, except that the minimum cement content can be laid down. This is most rational approach to the selection of mix proportions with specific materials in mind possessing more or less unique characteristics. The approach results in the production of concrete with the appropriate properties most economically. However, the designed mix does not serve as a guide since this does not guarantee the correct mix proportions for the prescribed performance.
Short Notes on Water Supply distribution System
Water Supply distribution System : System depending upon the general topography of the area. Local conditions, orientation of the road.
The types of system is as under :-
(I)Dead end system or Tree System : In this system a main pipeline is laid in the centre of the area from where a numbers of sub-mains originate. Each sub-main is further sub-divided into branches pipes called laterals.
(ii) Grid Iron System : In this system the main sub main and branches are all inter-connected with each others. This system is most suitable for the cities having roads.
(iv) Radial System : In this system water from main pipes is pumped to the distribution resevoir at the centre of the location of the localities.
Q & Ans on Soil mechanics for Civil Engineering LDC Exam
1.Which of the statements with regard to formation is correct
(1) One of the Functions of the formation is to facilitate drainage
(2) Width of bank for double railway line is 12.155 meters
(3) Width of cutting for double railway track is 11.750 meters
(4) Centre to centre of formation for double line is 4.725 meters
(5) Width of formation is different for concrete sleeper track and other than concrete sleeper track
a) 2, 3, 5
b) 3, 4, 5*
c) 2, 3, 4
d) 2, 4, 5
Answer - b) 3, 4, 5*
2. Centre to Centre spacing of formation for double railway line for Broad Gauge is
a) 1676 mm
b) 4725 mm
c) 4265mm
d) 5300 mm*
Answer - d) 5300 mm*
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