Reinforcements used in the process of prestressing:

Especially in case of prestressing, we are using strands of Steel and it’s called tendons.

Tendons are made of high strength Steel.

Three major types of reinforcements which are used in Prestressing:

1. Spalling R/f
2. Equilibrium R/f
3. Bursting R/f

Combination of reducing the structural thickness reduced conventional reinforcements quantities and fast construction often results in un prestressed structure.

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.