CIVIL ENGINEERING NOTES Archives - Page 2 of 8 - ENGINEERING BIX

20 Checkpoints for Centering and Shuttering works

Before we erecting the centering and shuttering the following points shall be borne in mind while checking during erection. Any member which is to remain in position after the general dismantling is done, should be clearly marked. Material used should be checked to ensure that, wrong items/ rejects are not used. If there are any excavations nearby which may influence the safety of form works, corrective and strengthening action must be taken. The bearing soil must be sound and well

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20 important limitations of Stairways as per NBC code

We have shared the important limitations for stairways as per National Building code. a) Interior stairs shall be constructed of non-combustible material throughout. b) Interior stairs shall be constructed as a self-contained unit with at least one side adjacent to an external wall and shall be completely enclosed. c) A staircase shall not be arranged round a lift shaft for buildings 15.0 m. and above height. The staircase location shall be to the satisfaction of Chief Fire Officer. d) Hollow combustible

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List of item of works and its Life span

Herewith we have shared the List of various item of works and its life span. Details of Items of works Life of the works Brickwork in lime of Cement, Boulder Masonry in Lime or Cement, Cut stone work in Lime or Cement,  100 Years and Above Brickwork in Clay, Coursed in Mud,  100 Years Brickwork in Arches in Lime or Cement, Rubble stone in arches in Lime or Cement, 100 Years Sundried brickwork in clay 75 Years Brick on edge

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Important Terms in Brickwork

Bond The arrangement of the bricks in successive courses to tie the brick work together both longitudinally and transversely. The arrangement is usually designed to ensure that no vertical joint of one course is exactly over the one in the next course above or below it, and there is greatest possible amount of lap.   Bed Joint Horizontal joint in brick work or masonry.   Closer Any portion of a brick used in constructing a wall, to close up the

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Details about Concreting under Special Conditions

Concreting under Special Conditions There are three type of concreting under special conditions, Namely Work in Extreme Weather Conditions Under Water Concreting Concrete in Sea Water Work in Extreme Weather Conditions: During hot and cold weather, the concreting shall be done as per the procedure set out in IS 7861 (Part–I)-1975 and IS 7861 (Part II)-1981 respectively. Concreting shall not be done when the temperature falls below 4.5ºC. In cold weather, the concrete placed shall be protected against frost. During

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Cement Mortar for masonry – materials, mixing and technical details

Cement Mortars Desirable properties of mortars for use in masonry are: (a)        Workability (b)        Water retentivity (c)        Rate of stiffing (d)        Strength (e)        Resistance to rain penetration (f)        Durability MATERIALS Water Water used for mixing and curing shall be clean and free from injurious quantities of alkalies, acids, oils, salts, sugar, organic materials, vegetable growth or other substance that may be deleterious to bricks, stone, concrete or steel. potable water is generally considered satisfactory for mixing. The Ph value of

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Earthwork excavation by using Machines

Earth Work Excavation by Mechanical means Earth work by mechanical means involves careful planning keeping in view site conditions i.e. type of soil, nature of excavation, distances through which excavated soil is to be transported and working space available for employing these machines. The earth moving equipment should be accordingly selected. The earth moving equipment consists of excavating and transporting equipment. Excavating equipment’s may be further classified as excavators and tractor based equipment’s. Excavators Excavators generally used at site are

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Anti-Termite Treatment in building construction works and its technical details

ANTI-TERMITE TREATMENT IN CIVIL ENGINEERING Sub-terranean termites are responsible for most of the termite damage in buildings. Typically, they form nests or colonies underground. In the soil near ground level in a stump or other suitable piece of timber in a conical or dome shaped mound. The termites find access to the super-structure of the building either through the timber buried in the ground or by means of mud shelter tubes constructed over unprotected foundations. Termite control in existing as

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Artificial stones, Selection of stones, Aggregate grading and its types

Selection of stones In contemplating the use of stone for various engineering works, the selection of the nature and quality of stone is governed by the purpose in view, cost of stone, its ornamental value and durability Suitability various types of stones for different purposes and situation is briefly discussed below For face work, in general marble, granite and close-grained sand stone are used in the form of thin slabs (veneers) where the structure subjected to adverse weather effects. For

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Characteristics of Granite, Balast, Sand Stone, Lime Stone, Marble and Slate

Characteristics of stones In order to ensure suitable selection of stone of particular work, one must be conversant with its composition, characteristics, uses and place of availability. Granite Igneous rock Composed of quart, feldspar and mica and minerals Available in grey, green, brown and pink and red Hard and durable High resistance to weathering The texture varies with its quality Specify gravity 2.7 and compressive strength 700 to 1300 kg/cm2 Used for ornamental, road metal, railway ballast, aggregate for concrete;

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