Difference between UTM & WGS in GIS software:

UTM and WGS both are examples of coordinate systems.

• The difference is that WGS is a Geographic coordinate system and UTM is a projected coordinate system.
  

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• Geographic coordinate systems are based on a spheroid and utilise angular units(i.e. degree)
  

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• Projected coordinate systems are based on a plane and utilize units i.e. for feet, metre, etc.

Thank you.

Let’s discuss some important precautions that we should keep in our mind while doing hand mixing of concrete. They are as follows ;

• Hand mixing should be used for small concrete preparation
• Hand mixing platform should be watertight and it should be impervious
• Mixing platform should be of concrete platform or brick floor to avoid the addition of extra water in our concrete
• Water should be added in some interval in concrete while hand mixing
• Avoid large sizes of buckets for the measurement purpose
• Labours should wear a mask to avoid some respiratory diseases

Steps to follow for doing hand mixing of concrete :

• Doing proper batching of all the ingredients of concrete and spread them evenly
• Add cement with Sand and mix them for throughout
• Mixing process should continue until we get the homogeneous colour
• Then add coarse aggregate into it and again mix it appropriately
• For mixing forward and backward movement of shovel have to be done
• Then at the centre, one hollow circular space is formed for the addition of water
• While doing hand mixing 5 to 10% of the extra amount of cement should be added
• PPE( Personal Protective Equipment) should be wear by labour while doing hand mixing