How should I know ;P
The mix proportion for M40 concrete is 1:1.65:2.92W/C ratio = 0.4The design calculation is as per IS mix design
For nominal Mix Cement consumption for M25 will be 570 kg per cum. and for Design Mix it can be optimised to 510 kg per cum.
S.NoItems PROPOSED MIX DESIGNM10M20M25M30M35M401Cement(OPC)2303203503804204202Coarse Aggregates320mm705721710680645634412mm4103783744044304535Manufactured Sand8407977857537167256Admixture11.82.22.633.67W/C0.720.50.460.430.40.38
The mixes of grades M5 M10, M15, M20 and M25 correspond approximately to the mix proportions (1:4:8), (1:3:6), (1:2:4), (1:1.5:3) and (1:1:2) respectively.
1:4:8
The mix proportion for M40 concrete is 1:1.65:2.92W/C ratio = 0.4The design calculation is as per IS mix design
For nominal Mix Cement consumption for M25 will be 570 kg per cum. and for Design Mix it can be optimised to 510 kg per cum.
Ans: M15 grade indicates the grade of concrete used in the structure i.e M indicates the design mix proporation and 15 indicates the compressive strength of conctrete at 28 days in N/mm2
S.NoItems PROPOSED MIX DESIGNM10M20M25M30M35M401Cement(OPC)2303203503804204202Coarse Aggregates320mm705721710680645634412mm4103783744044304535Manufactured Sand8407977857537167256Admixture11.82.22.633.67W/C0.720.50.460.430.40.38
1:2:4
1:1:2 (1 cement: 1 sand: 2 coarse agregate)
Define symmetry and proportion. Why are they important to artistic design?
It is pictures.
Proportion in design will relate to the size of the furniture chosen for a room for example. A castle with huge rooms will require much larger pieces of furniture than a small cottage for a couple.
The mixes of grades M5 M10, M15, M20 and M25 correspond approximately to the mix proportions (1:4:8), (1:3:6), (1:2:4), (1:1.5:3) and (1:1:2) respectively.
design mix M25
1:4:8