How to calculate cement sand quantity in 1:6 mortar

How to calculate cement and sand quantity required for 1m3 cement mortar in 1:6, in this topic we will learn about how to calculate cement sand quantity in 1:6 mortar.

We know that cement mortar is mixture of cement and sand. ratio of mix is 1: 6 in which one part is cement and six parts is sand.

We know that cement mortar is used for many civil work like brick masonry, plastering work of internal and external sometime it is also used for dpc work also

meaning of mix 1:6 mortar:- in this mix ratio of cement and sand, one part is cement and 6 parts is sand and by adding water. Water is added in mix mortar in about 20% of its dry volume.

Steps for how to calculate cement sand quantity

1) Assume volume of mortar is 1m3

2) first calculate wet volume of mortar

3) calculate dry volume of mortar

4) calculation of cement quantity

5) calculation of sand quantity

How to calculate cement sand quantity in 1:6 mortar?

■ given data:-

Assume volume of mortar = 1m3

Density of cement = 1440 kg/m3

Cement in 1 bag = 50 kg

1m3 = 35.32 cubic feet

Mix ratio is = 1:6 ( one part is cement and 6 part is sand)

Total proportion = 1+6= 7

Part of cement = 1/7

Part of sand = 6/7

■ Calculation :- we know that while we calculate dry volume of cement mortar cofactor 1.54 is multiply in wet volume of mortar considering wastage of mortar and volume increase

Wet volume = 1m3

Dry volume =wet volume × 1.54
= 1m3 × 1.54 = 1.54 m3

Dry volume of mortar = 1.54 m3

The quantity of cement required for 1m3 of cement mortar (1:6)

Dry volume of mortar is about 1.54m3, and mix ratio is 1:6, in which one part of cement mixed with 6 parts of sand. Total proportion = 1 + 6 = 7, so parts of cement in mix = 1/7.

Cement quantity generally measure in kg, bags, cubic feet (CFT) and cubic meter.

Weight of cement in m3 = part of cement × volume × density of cement

Required volume of cement = 1.54/ 7 = 0.22 cubic meter

Weight of cement in kg = (1/7) × 1.54 m3 × 1440 kg/m3 = 317 kg

No of bags of cement = 317/50 = 6.4 bags

That’ typical amount of cement required for 1m3 cement mortar with 1:6 mix ratio is about 317 kg (or 0.22m3, or 6.4 bags of 50kg cement). Therefore 317 kg or 6.4 bags of cement are required per cubic meter of cement mortar (1:6).

The quantity of sand required for 1m3 of cement mortar (1:6)

Dry volume of mortar is about 1.54m3, and mix ratio is 1:6, in which one part of cement mixed with 6 parts of sand. Total proportion = 1 + 6 = 7, so parts of sand in mix = 6/7.

Sand quantity generally measure in kg, tons, cubic feet (CFT) and cubic meter.

Volume of sand in m3 = (6/7)× 1.54 m3 = 1.32 m3, as 1m3 = 35.32 CFT, so volume of sand in CFT = 1.32 × 35.32 = 47 CFT, as sand density = 1600 kg/m3, so sand weight in kg = 1.32 × 1600 = 2100 kg (approx).

That’ typical amount of sand required for 1m3 cement mortar with 1:6 mix ratio is about 2100 kg (or 47 CFT, or 2.1 MT). Therefore 2100 kg or 47 CFT of sand are required per cubic meter of cement mortar (1:6).

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The quantity of sand & cement required for 1m3 of cement mortar (1:6)

That’s 2100 kg (or 47 CFT) quantity of sand and 317 kg (6.4 bags) quantity of cement are required for 1m3 of cement mortar (1:6).

The quantity of cement required for 1m3 of cement mortar (1:5)

That’ typical amount of cement required for 1m3 cement mortar with 1:5 mix ratio is about 370 kg (or 0.257m3, or 7.4 bags of 50kg cement). Therefore 370 kg or 7.4 bags of cement are required per cubic meter of cement mortar (1:5).

The quantity of sand required for 1m3 of cement mortar (1:5)

That’ typical amount of sand required for 1m3 cement mortar with 1:5 mix ratio is about 2050 kg (or 45 CFT). Therefore 2050 kg or 45 CFT sand are required per cubic meter of cement mortar (1:5).

The quantity of cement required for 1m3 of cement mortar (1:4)

That’ typical amount of cement required for 1m3 cement mortar with 1:4 mix ratio is about 444 kg (or 0.308m3, or 8.88 bags of 50kg cement). Therefore 444 kg or 8.88 bags of cement are required per cubic meter of cement mortar (1:4).

The quantity of sand required for 1m3 of cement mortar (1:4)

That’ typical amount of sand required for 1m3 cement mortar with 1:4 mix ratio is about 1970 kg (or 43.5 CFT). Therefore 1970 kg or 43.5 CFT sand are required per cubic meter of cement mortar (1:4).

The quantity of cement required for 1m3 of cement mortar (1:3)

That’ typical amount of cement required for 1m3 cement mortar with 1:3 mix ratio is about 554 kg (or 0.385m3, or 11 bags of 50kg cement). Therefore 554 kg or 11 bags of cement are required per cubic meter of cement mortar (1:3).

The quantity of sand required for 1m3 of cement mortar (1:3)

That’ typical amount of sand required for 1m3 cement mortar with 1:3 mix ratio is about 1850 kg (or 41 CFT). Therefore 1850 kg or 41 CFT sand are required per cubic meter of cement mortar (1:3).

The quantity of sand & cement required for 1m3 of cement mortar (1:5)

That’s 2050 kg (or 45 CFT) quantity of sand and 370 kg (7.4 bags) quantity of cement are required for 1m3 of cement mortar (1:5).

The quantity of sand & cement required for 1m3 of cement mortar (1:4)

That’s 1970 kg (or 43.5 CFT) quantity of sand and 444 kg (8.88 bags) quantity of cement are required for 1m3 of cement mortar (1:4).

The quantity of sand & cement required for 1m3 of cement mortar (1:3)

That’s 1850 kg (or 41 CFT) quantity of sand and 554 kg (11 bags) quantity of cement are required for 1m3 of cement mortar (1:3).

RR Masonry (Random rubble masonry)

In RR (random rubble masonry), the rough, irregular and unequal size of stones are used to build the wall structures. The typical stones are arranged by irregular dressing without any layers in the construction works. Or the stones are arranged in courses of equal height by neatly dressing & hammering them. The stones of equal size are selected to build the outer face of the retaining wall & to maintain the layers.

Due to unequal layers of RR masonry, it is difficult to estimate amount of mortar, cement, sand and stones. However, the certain thumb rules are used in the estimation of stones, cement, sand and mortar for RR masonry works.

The thumb rules for RR masonry are following:

1) The amount of stones required for the random rubble masonry is 1.25 times the total volume of the structure. For example, suppose, if the volume of the stones masonry wall is = 20 cubic feet, then you need the volume of the stone requires to build the wall is 1.25 × 20 cu ft. = 25 CFT.

2) The dry volume of the mortar required for the stones or RR masonry structure will be 40% of the total volume of the RR masonry. For example, suppose, if the volume of the RR masonry wall is 20 CFT, the amount required dry volume of the mortar will be 20 × 40% = 8 CFT.

If your volume of RR masonry work is 1m3, then as per thumb rule you need about 1.25 m3 (1 × 1.25 = 1.25 m3) of stones and 0.4 m3 (1 × 40% = 0.4m3) of dry volume of mortar.

The typical amount of stones and dry volume of mortar required for 1 m3 (cubic meter) of RR masonry is about 1.25 m3 of stones and 0.4 m3 of dry volume of mortar. Thus, a typical 1m3 of RR masonry requires 1.25 m3 of stones and 0.4 m3 of dry volume of mortar.

The typical amount of stones and dry volume of mortar required for 1 cubic foot (CFT) of RR masonry is about 1.25 CFT of stones and 0.4 CFT of dry volume of mortar. Thus, a typical 1 CFT of RR masonry requires 1.25 CFT of stones and 0.4 CFT of dry volume of mortar.

RR masonry 1:6 ratio cement and sand calculation

If your volume of RR masonry work is 1m3, then as per thumb rule you need about 1.25 m3 (1 × 1.25 = 1.25 m3) of stones and 0.4 m3 (1 × 40% = 0.4m3) of dry volume of mortar.

Given ratio of cement to sand is 1:6, total proportion = 1+6 = 7, part of cement = 1/7, and parts of sand = 6/7. Sand density = 1600 kg/m3 and cement density = 1440 kg/m3.

Required cement quantity in kg = 1/7 × 0.4 × 1440 = 83 kg, cement amount in bags = 83/50 = 1.66 bags.

Required sand quantity in kg = 6/7 × 0.4 × 1600 = 550 kg, sand amount in CFT = 550/45 = 12 CFT.

RR masonry 1:6 ratio cement and sand calculation: with a mix ratio of 1:6, you required 1.66 bags of 50kg cement, 12 CFT of sand, 1.25 m3 of stones, 0.4 m3 of dry volume of mortar for 1 m3 of RR masonry.

RR masonry 1:5 ratio cement and sand calculation

If your volume of RR masonry work is 1m3, then as per thumb rule you need about 1.25 m3 (1 × 1.25 = 1.25 m3) of stones and 0.4 m3 (1 × 40% = 0.4m3) of dry volume of mortar.

Given ratio of cement to sand is 1:5, total proportion = 1+5 = 6, part of cement = 1/6, and parts of sand = 5/6. Sand density = 1600 kg/m3 and cement density = 1440 kg/m3.

Required cement quantity in kg = 1/6 × 0.4 × 1440 = 96 kg, cement amount in bags = 96/50 = approx 2 bags.

Required sand quantity in kg = 5/6 × 0.4 × 1600 = 534 kg, sand amount in CFT = 534/45 = approx 12 CFT.

RR masonry 1:5 ratio cement and sand calculation: with a mix ratio of 1:5, you required 2 bags of 50kg cement, 12 CFT of sand, 1.25 m3 of stones, 0.4 m3 of dry volume of mortar for 1 m3 of RR masonry.

RR masonry 1:4 ratio cement and sand calculation

If your volume of RR masonry work is 1m3, then as per thumb rule you need about 1.25 m3 (1 × 1.25 = 1.25 m3) of stones and 0.4 m3 (1 × 40% = 0.4m3) of dry volume of mortar.

Given ratio of cement to sand is 1:4, total proportion = 1+4 = 5, part of cement = 1/5, and parts of sand = 4/5. Sand density = 1600 kg/m3 and cement density = 1440 kg/m3.

Required cement quantity in kg = 1/5 × 0.4 × 1440 = 115 kg, cement amount in bags = 125/50 = approx 2.3 bags.

Required sand quantity in kg = 4/5 × 0.4 × 1600 = 512 kg, sand amount in CFT = 512/45 = approx 11 CFT.

RR masonry 1:4 ratio cement and sand calculation: with a mix ratio of 1:4, you required 2.3 bags of 50kg cement, 11 CFT of sand, 1.25 m3 of stones, 0.4 m3 of dry volume of mortar for 1 m3 of RR masonry.

What is the quantity of stone required for 10 m3 of rubble masonry?

With a standard mix ratio of 1:4, you need about 23 bags of 50kg cement, 110 CFT of sand, 12.5 m3 of stones, 40 m3 of dry volume of mortar for 10 m3 (cubic meter) of RR stones masonry.

Conclusions:-

That’s 2100 kg (or 47 CFT) quantity of sand and 317 kg (6.4 bags) quantity of cement are required for 1m3 of cement mortar (1:6).