Lumpsum quantity of steel in residential as well as a commercial building:

Here I will tell you the meaning of lumpsum in a simple way, have a look;

Meaning Of Lumpsum:

The lump-sum is simply a single payment of money which is opposed to a series of payments made over time such as an annuity.

The quantity of steel is different in different structural elements because the load taken by different elements are different.

• Slab or lintel – 0.7 to 1% (55 to  78.5 kg per metre)
  

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• Columns – 0.8 to 6% (62.8 to 471 kg per metre cube)

I hope so your doubt is clear.

Thank You.

Difference between granular sub-base and wet mix macadam in payment structure:

The wet mix macadam mostly consists of laying spreading and compacting of clean, crushed, well-graded granular material that is prepared and approved granular sub-base.

Single compacted wet mix macadam player shall not be less than 75mm.

Whenever we are using vibrating compacting equipment then compacted depth of a single layer of the course of the subway may be up to 200 mm.

Wet mix macadam shall be prepared in an approved of water macadam mixing plant.

Here replacing the aggregate fraction should be retained on 22.4 mm sieve with materials of passing from 22.4 and written on 4.75 mm.

While the addition of water, the evaporation loss shall be considered the mixed material shall be uniformly wet and segregation will take place.