Sri Ramakrishna Mission Vidyalaya Polytechnic College, Coimbatore - 641 020

DGPS stands for Differential Global Positioning System . Differential Global Positioning System (DGPS) is a system designed to enhance the accuracy and reliability of the Global Positioning System (GPS). Here's a more detailed overview: How DGPS Works Reference Stations: DGPS relies on a network of fixed ground-based reference stations located at precisely known positions. These stations receive signals from GPS satellites. Correction Calculation: Each reference station compares the GPS-derived position with its actual known position. Any discrepancy between the two positions is the error in the GPS signal. Broadcast Corrections:  The reference station calculates the necessary correction for each satellite's signal and broadcasts this correction information to DGPS receivers in the vicinity. Receiver Adjustments:  A DGPS-enabled receiver uses these corrections to adjust its own GPS signals, resulting in a much more accurate position determination. Advantages of DGPS Increased ...

Earthquakes have always been a significant aspect of the design and safety of dams. A large storage dam consists of a concrete or fill dam with a height exceeding 15m, a grout curtain or cut-off to minimise leakage of water through the dam foundation, a spillway for the safe release of floods, a bottom outlet for lowering the reservoir in emergencies, and a water intake structure to take the water from the reservoir for commercial use.  During the Richter magnitude 8 Wenchuan earthquake of 12 May 2008, 1803 concrete and embankment dams and reservoirs and 403 hydropower plants were damaged. Likewise, during the 27 February 2010 Maule earthquake in Chile of Richter magnitude 8.8, several dams were damaged. However, no large dams failed due to either of these two very large earthquakes. Under normal conditions buildings and bridges have to carry mainly vertical loads due to the dead load of the structures and some secondary live loads. In the case of dams the main load is the water lo...

  Should I Power Wash My House Before Painting?   You may be wondering if you should power wash your house before painting them as you want to change the look of the outside of your home. Power washing is a great way to get rid of mold, dirt, and other filth that can make it hard for paint to stick to the surface.  To keep from damaging things, it’s important to be careful when using this strong cleaning method. You can hire a  pressure washing company  to make sure the job is done safely and effectively, but you can also do it yourself if you know how to use power tools. You can choose the best way to clean the outside of your home by learning about the pros and cons of power washing, as well as the best way to do it. The Benefits of Power Washing Before Painting Power washing your home’s exterior before painting provides several key benefits: Ø Removes Dirt and Grime:  The high-pressure water from a power washer can blast away built-up dirt...

To calculate the capacity of water in a circular tank in Liters, you can follow these steps: 1.       Measure the Radius (r): Determine the radius of the tank. This is the distance from the centre of the tank to the inner edge of the circular wall. 2.       Measure the Water Height (h):   Determine the height of the water level in the tank. This is the vertical distance from the bottom of the tank to the surface of the water. 3.       Calculate the Volume in Cubic Meters: Use the formula for the volume of a cylinder, which is applicable to a circular tank                                                 ...

Unmanned Aerial Vehicles (UAVs) – also referred to as “drones” – are set to become increasingly common on construction projects throughout 2020. From undertaking inspections ensuring that operatives are kept out of harm’s way, to surveying vast areas of land in just a few minutes, the continued rise of UAVs will considerably improve safety and productivity in construction. Drones are the foremost widely used emerging construction technology. They can conduct site surveys more quickly and accurately than a crew on the bottom and are cheaper than aerial imaging. Their high-resolution cameras and therefore the data collected can create interactive 3D or topographical maps and models and take volume measurements. Another advantage of using drones is that the ability to examine hard to succeed in places like bridges or around tall buildings and to try to do it safely. You can also use them to watch the progress on the employment site and see how people are working. Many construction sites a...

  How to measure water tank capacity? To measure the capacity of the tank, you will need to do some simple calculations. ·          Measure the length, width, and height of your water tank in feet. ·          Convert the measurements to centimeters since the standard unit for volume is cubic centimeters (cm³), and 1 litre is equal to 1000 cm³. ·          Calculate the volume in cubic centimeters. ·          Convert the volume from cubic centimeters to liters by dividing by 1000. Volume (in cm³)  Length (cm) × Width (cm) × Height (cm)  = Volume (in cm³) / 1000 Suppose you have a rectangular water tank with the following dimensions:  ·          Length = 5 feet  ·          Width = 3 feet  ·  ...

Concept of Entrepreneurship Entrepreneurship is the ability and readiness to develop, organize and run a business enterprise, along with any of its uncertainties in order to make a profit.  Characteristics of Entrepreneurship: Not all entrepreneurs are successful; there are definite characteristics that make entrepreneurship successful. A few of them are mentioned below: Ability to take a risk An entrepreneur needs to be courageous and able to evaluate and take risks. Innovation It should be highly innovative to generate new ideas, start a company and earn profits out of it.  Visionary and Leadership quality To be successful, the entrepreneur should have a clear vision of his new venture. Open-Minded In a business, every circumstance can be an opportunity and used for the benefit of a company. Flexible An entrepreneur should be flexible and open to change according to the situation.  Know your Product A company owner should know the product offerings and also be a...

  What is inverted staff reading? To obtain the reduced levels of these points,  the staff is held upside down in an inverted position with its base on the elevated points .  When booking an inverted staff reading, it is entered into the levelling table with a minus sign, the calculation proceeding in the normal way taking this sign into account. It may be necessary to determine the heights of points such as a ceiling or the soffit of a bridge, underpass or canopy. Usually, these points will be above the plane of collimation of the level. Example: Find the height of the points in Figure   Solution: Station Staff Reading H.I R.L Notes B.S F.S A 0.174   33.724 33.550 B.M B 0.738 2.111 32.351 31.613 C.P C -1.603 -3.890 34.638 3...