As per ISSCS, fine gravel is of size
- A4.75 mm to 19 mm
- B4.75 mm to 20 mmCorrect
- C19 mm to 75 mm
- D20 mm to 80 mm
Solution
Concept
Fine gravel size
Step-by-step solution
1. IS 1498: fine gravel 4.75–20 mm; coarse gravel 20–80 mm.
Explanation
Fine gravel lies between 4.75 and 20 mm.
Why the other options are wrong
4.75–19 mm is the ASTM size.
Shortcut
Fine gravel 4.75–20 mm.
Correct answer: B) 4.75 mm to 20 mm