workability of concrete durability of concrete water content of concrete strength of concrete
Answer Discuss in Comment
6m³ 12m³ 60m³ 8m³
mechanical method graphical method Lehman's or trial and error method all of the above
45 litres/day 125 litres/day 145 litres/day 100 litres/day
WL/4 WL²/8 WL/10 WL²/6
10-16% 20-26% 40-46% 30-35%
0.04bD 0.01bD 0.08bd 0.1bD
inclined crack near support inclined crack near midspan inclined crack near support vertical crack near midspan
Calcium Magnesium bicarbonate magnesium sulphate All of the above
10 12 15 13
"Scientists dream about doing great things. Engineers do them."
