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concrete pole specification | how to calculate cement, sand and aggregate quantity in concrete

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Today I will tell, how PCC pole concreting is done? Before knowing about our topic, let's take a little knowledge about PCC Polls.full form of pcc pole is Plain  Cement Concrete pole .There are various types of PCC Pole like 8 mtr 8.5 mtr ,9 mtr .but Now I will discuss about only 8.5 mtr pcc pole. As per Guaranteed Technical Perticulars(GTP) Total Length-8.5 mtr Pit depth-1.5 mtr Working load applied 300 mm from top-180 kg Weight of the pole-415 Kg. Top dimension-90mmx145 mm Bottom dimensions-90mm x 300 mm we have to maintain pit length is 1.5 mtr and pole should be inside pit is L/6 where L is length of the pole. Explained : L=8.5 mtr Pit depth=L/6+0.075(Base plate) Pit diameter =20 inch(0.508 mtr) Let's go to our topic now. How to calculate cement, sand and aggregate quantities for ratio 1:2:4 Pit Size For one cmt cement required -6 bag Our pit volume (dia-0.508 mtr where r-0.254, depth-1.5 mtr) Volume -pie*r2*h                =3.14*0.254*0...
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Depth of Field Photography Basics

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  Depth of Field Photography Basics Understanding aperture & depth of field requires a strong foundation in the basics of a camera lens, along with the vocabulary used to describe them, such as f-stop, focal length, focus range, and field of view. This section provides an overview of the basics. The following sections provide technical details allowing you to apply these concepts to your own photography. What is Aperture in Photography? The terms f-stop and aperture are often used interchangeably, this is incorrect. Aperture refers to aperture diameter, where light enters the front of the lens. F-stop is the ratio of lens focal length to aperture diameter. F-stop can be referred to as f-number or f-stop value. They are the same. F-stop is  a dimensionless number, denoted by a hooked “ f ”, with an underlying number denoting the f-stop value. The hooked “f” is shorthand for f-stop, like the ”s.” after a shutter speed is short for seconds. f/2.8 and f/8 are two exa...
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Cable trench specification | Various type of cable trench

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  Hello friends, I had told in my previous blogging that the current carrying capacity of different UG cables.Today I will tell you how the UG cable is laying and how the cable trench is done with the specification.   UG cable is very expensive, about 3-4 times expansive and also laying. But due to many reasons we have to do UG Cable. One of them is because of the reason   we have to do UG cable even after being so expensive, is density populated areas where Overhead Network cannot be used. However, the cable should be properly laid because it takes more time to find the fault than the overhead line.           Before selecting for laying UG cable, the current carrying capacity, voltage drop and short circuit current of the cable are very important factors which I had written earlier in blogging. Generally the life of the cable is 40-50 years. But Incorrect handling/laying can result in insulation damage and decreases...
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