explain the demerits of m sand

Cope and drag - Wikipedia

In foundry work, the terms cope and drag refer respectively to the top and bottom parts of a two-part casting flask, used in sand casting. The flask is a wood or metal frame, which contains the molding sand, providing support to the sand as the metal is poured into the mold.

8 Advantages and Disadvantages of the Mixed Economy ...

8 Advantages and Disadvantages of the Mixed Economy. As the name implies, a mixed economy is a form of system where all activities in production, as well as those performed by private and government entities, blends capitalism with various kinds of regulations. However, more and more people these days are wondering what this type of economy is ...

Advantages and Disadvantages of LAN Local Area Network ...

A LAN Administrator may be with an M.C.S. or B.S.C.S. degree holder person optionally with a course / diploma in networking field or with relative experience in the field. 5. Covers Limited Area Local Area Network covers a small area like one office, one building or …

What are the advantages and disadvantages of beach ...

Structures behind beach are protected as long as the added sand remains. ... the advantages are you stay safe at a beach you dont have to worry about where you swim and the disadvantages are ...

21 Advantages and Disadvantages of Desalination ...

The advantages and disadvantages of desalination work to balance cost vs. productivity to see if it is a useful investment. As more drought and famine issues impact our planet because of global warming, these key points are going to become essential to consider for more communities in the future.

Mortgages - Advantages and Disadvantages | WhatHouse

Mortgages - Advantages and Disadvantages ... The advantages and disadvantages of having a mortgage. Having your own home is a goal for many people in the UK. Yet, in order to buy a house, most of us will have to take out a mortgage. It's either that or having the prospect of staying in rented accommodation for the foreseeable future.

Advantages and Disadvantages of Mobile Commerce (Updated ...

Disadvantages of Mobile Commerce : Every invention has its own merits and demerits. It is applicable in this mCommerce business also. 1. Smartphone limitation : Mobile has no big screen like desktop or laptops, so sometimes users tired to navigate more and more to choose just one item from thousands. It affects shopping rates.

FILTRATION - Environmental Protection Agency

31 SLOW SAND FILTRATION 3 SLOW SAND FILTRATION 3.1 SLOW SAND FILTER MEDIA Allen Hazen was one of the pioneers in the scientific investigation of slow sand filtration and introduced, as long ago as 1892, the concept of effective size (or diameter). The EFFECTIVE SIZE (ES) is defined as the size of a sieve opening through which 10 percent

What is Waste Management? Advantages and Disadvantages ...

Disadvantages of Waste Management: We have now seen the merits of waste management in detail. Let us now have a look at the disadvantages also. 1. The process is not always cost-effective: Yes, though it may pay cash to the contributors, the truth is this process needs a lot of money, time and land to set up a plant and run.

Comparison of Physical Properties between Natural Sand and ...

A.M Guddodagi, a civil contactor and who has installed a M-sand manufacturing unit in the north Karnataka region, said that the increasing demand and limited supply of natural sand provoked him to install a M-sand manufacturing industry at Ainapur village in the taluk. In 2004 Kerala government started popularizing M sand industry after facing ...

Rapid sand filter - Wikipedia

The rapid sand filter or rapid gravity filter is a type of filter used in water purification and is commonly used in municipal drinking water facilities as part of a multiple-stage treatment system. Rapid sand filters were first developed in the 1890s, and improved designs were developed by the 1920s.

Advantages and Disadvantages of E-Commerce Businesses

Oct 13, 2019· You don't need to be a business expert to know that e-commerce has reshaped the modern marketplace in recent years. While it's a dominant model, selling goods or services online comes with its own set of advantages and disadvantages compared to traditional brick-and-mortar businesses.. Therefore, businesses need to look beyond the hype and develop …

Advantages and Disadvantages CS –Presentations Visual Aids

There are advantages and disadvantages to all types of visual aids ‐IV • Physical models + are effective for showing three dimensions ‐Are ineffective unless large enough for all to see. • Handouts + ensure that audience leaves with the message + gives audience something to take notes on.

10 Main Disadvantages of Caste System in India

10 Main Disadvantages of Caste System in India. Article shared by. Caste system has several disadvantages which come in the way of social progress and development. It was the steel work of Hindus and thus it acted to curb individual freedom. Its disadvantages can be noted as under: 1.

Testing of Sand Quality at Construction Site for Concrete

There are different methods for testing of sand quality at construction site for concrete construction. Quality of sand is as much of importance as other materials for concrete. Aggregate most of which pass through 4.75 mm IS sieve is known as fine aggregate. Fine aggregate shall consists of ...

M Sand Vs River Sand (Natural Sand)

Know the details of M Sand vs River or Natural Sand. Manufactured sand is a perfect substitute for river sand. These blog covers full details of m-sand advantages. Impurities and …

Rapid sand filter - Wikipedia

The rapid sand filter or rapid gravity filter is a type of filter used in water purification and is commonly used in municipal drinking water facilities as part of a multiple-stage treatment system. Rapid sand filters were first developed in the 1890s, …

Advantages And Disadvantages of Newspaper | Frndzzz.com

Internet points - Some Advantages & Disadvantages of Internet are as follows. So let us see advantages and disadvantages of an internet one by one to know more about internet (world wide web). It is used for communication, marketing, banking, entertainment, study material for school students and much more which are as follows.

Advantages and Disadvantages of RFID Technology

Jan 25, 2018· RFID, or Radio Frequency Identification, is fast emerging as a major commercial technology. Like every new technology, it also has some advantages and disadvantages. Here, we will discuss more on this topic.

Advantages and Disadvantages of Private Limited Company

Apr 16, 2016· Advantages and Disadvantages of Private Limited Company: According to under section 2 (28) of the Companies Ordinance 1984, a Private Limited Company means a company which by its Articles of Association.

Manufactured Sand (M-Sand) for Concrete -Properties and ...

Manufactured sand (M-Sand) is a substitute of river sand for concrete construction . Manufactured sand is produced from hard granite stone by crushing. The crushed sand is of cubical shape with grounded edges, washed and graded to as a construction material. The size of manufactured sand (M-Sand) is ...

The Main Types Of Soil

So take a quick look at the main types of soil you are likely to encounter, together with the advantages and disadvantages of each type, and then work out which type of soil you have in your own garden. Broadly speaking, garden soils fall into six main categories, each named after the main constituents.

What Is Tree Topology? Advantages And Disadvantages Of ...

A tree topology is a combination of the bus & star network topology. It is used for a scalable & robust networks, know about its advantages & disadvantages.

Advantages and disadvantages of CD ROM - Answers

some disadvantages of a CD-ROM are that it is easy to scratch the surface of the CD and it won't work properly after that ...

What Are the Advantages & Disadvantages of Economic ...

Nov 21, 2018· Competition and a free market system force businesses to innovate, but also make it harder to stand out and earn customer loyalty. Unsustainable levels of competition also lead to market gluts in products, lowering prices and quality and creating unsustainable inventory levels.

What are the advantages and disadvantages of dams? - Quora

ADVANTAGES: 1. Once a dam is constructed, electricity can be produced at a constant rate. 2. If electricity is not needed, the sluice gates can be shut, stopping electricity generation. The water can be saved for use another time when electri...

ME 3210 HW 3 Flashcards | Quizlet

The fill time of molten metal into the casting shape must not be too slow or the metal will begin to prematurely solidify. This "fill time" relates directly to the pouring velocity, but it also relates to the channel diameter, molten metal density, and fluid viscosity.

Sand control - OilfieldWiki

Sand control refers to managing/minimizing sand and fine production during petroleum production.Sand and fine produced with oil and gas can cause erosion and wear of production facilities/equipments, resulting in production downtime, expensive repairs, and …

What is the advantage of natural sand? - Quora

Sand is one of the vital ingredients in construction works. A huge amount of concrete is consumed in construction works. About 35 % volume of concrete is comprised of sand. Generally, cement and coarse aggregates are factory-made products and thei...

Use of Manufactured Sand in Concrete and Construction An ...

Considering, the acute shortage of river sand, huge short coming on quality of river sand, high cost, greater impact on road damages and environmental effects, The Construction Industry shall start using the manufactured sand to full extent as alternative, reduce the impacts on environment by not using the river sand.

Advantages and Disadvantages of Different Network Topologies

Apr 12, 2018· A network topology refers to the way in which nodes in a network are connected to one another. The network structure defines how they communicate. Each kind of arrangement of the network nodes has its own advantages and disadvantages. Here we tell you about the same.

Top 22 Advantages and Disadvantages of Working Abroad ...

Disadvantages of working abroad: 1. A lot of money is required: In order to move abroad and work there, the first and foremost thing required is a hefty amount of money. If you cannot spend a lot of money, you cannot think of working abroad and settling there. So, this becomes an initial hindrance to work overseas.