Correct option is C
Recommended bridge type for span:
30 — 150 m Truss bridge
50 — 080 m Plate girder bridge
> 150 m Suspension bridge
Recommended bridge type for span:
30 — 150 m Truss bridge
50 — 080 m Plate girder bridge
> 150 m Suspension bridge
Which of these should be the maximum total quantity of dry aggregates by mass per 50 kg of cement required, to be taken as the sum of the individual masses of fine and coarse aggregates for M15 grade concrete?