Thumb Rule for Volume of Concrete for the plan area. The concrete volume required for per square feet plans area = 0.038 m3/square feet plan area. Example – If the Plan Area = 25 x 40 = 1000 Sq. m. then total volume of concrete needed = 1000 x 0.038m3 = 38 m3.
Using some basic thumb rules, regulations and guidelines as per IS code 456:2000 and ACI code, for concrete floors, concrete slab thickness for residential buildings is kept 4 to 6 inches (100 mm to 150 mm), providing minimum concrete grade M10-M15 and mesh bar embedded in concrete, 2-inch deep from the top of the ...
The Thumb rule method is an approximate & comparing method. In thumb rules and the units are not the same when we compare to get the results. So, ignore units while performing the thumb rule. Example:-If Plan Area = 40 x 20 = 800 Sq.
Thumb Rule for Concrete Work
The volume of concrete required is 0.038 m3/sqft area. The standard weight of 1 bag of cement is 50 kg. 1 bag of cement is equal to 1.25 cuft or 0.0347 m3. In high-rise buildings, 0.5 bags of cement is required per square foot of area.
For slabs, no sample may be more than ¾ inch thinner than specified and the average of all samples can't be more than 3/8 inch thinner than specified. Use of multiple toleranced items to yield toleranced result.
Calculating the volume for concrete requires using three dimensions: length times width (which is area) times the height (thickness) or L x W x H. If you are using feet as your standard unit of measurement, this formula will give you the volume of concrete in cubic feet.
Gravels constitute the majority of coarse aggregate used in concrete with crushed stone making up most of the remainder. Natural gravel and sand are usually dug or dredged from a pit, river, lake, or seabed. Crushed aggregate is produced by crushing quarry rock, boulders, cobbles, or large-size gravel.
As per the experts, the safest cement mix ratio for all kinds of concrete used in different construction purposes is 4:2:1. It means 4 parts of crushed stones mixed with 2 parts of sand and 1 part of cement will create the ideal cement mix to prepare concrete for all purposes.
1 Cubic Meter of Concrete
1m3 of concrete = 150l water + 250kg cement + 700kg sand + 1200kg aggregates.
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Standard Concrete Slab Thickness In Australia
In Australia, concrete slabs must be fixed in adherence with the Australian Standards AS 2870 and AS 3600. The most common slab thickness in Australia is between 85mm and 100 mm. The thickness of concrete slabs is usually stated in specification documents.
Standard concrete floor slab thickness in residential construction is 4 inches. Five to six inches is recommended if the concrete will receive occasional heavy loads, such as motor homes or garbage trucks. To prepare the base, cut the ground level to the proper depth to allow for the slab thickness.
How Thick Does Concrete Need to Be for a Slab? In general, for residential areas like walkways and patios, 4 inches of concrete is sufficient for a slab. For a deck or deck stair landing, again, around 4 inches of concrete is sufficient.
For concrete made for paths & driveways, mix 1 part Cement Australia Builders Cement with 2 parts sand and 3 parts aggregate. Approximately 16 x 20kg bags of Builders Cement are required per cubic metre of finished concrete.
Overall, concrete with the larger aggregates exhibited greater compressive strength than that of concrete with smaller aggregates. This is due to large aggregates being able to interlock within the mixture, providing strength based on its and the cement internal properties.
Aggregate size, shape and properties directly influence the workability, strength, durability and absorption rate of your ready-mix concrete.
Bluestone Aggregate 10-14mm is a small sized aggregate commonly used for concrete and wide range of landscaping and drainage applications. This product is a popular choice for retaining water and suppressing weeds in garden beds, creating a low maintenance lawn alternative and using as an additive in concrete mixes.
In the majority of concrete works, aggregate sizes of 20 mm or smaller are used. To ensure good coarse aggregate compaction and higher concrete density, it is recommended to mix 20 mm and 10 mm coarse aggregates in the ratio of 70:30 or 60:40.
one 20kg bag will cover an area of 1.1m2 to a depth of approximately 10mm. or 108 x 20kg bags equates to one cubic metre of mixed concrete. Concrete Mix comes 20kg plastic lined, multi-walled paper sacks, and small handy 10kg plastic bags. clean all tools and equipment with water promptly after use.
Thus, the quantity of cement required for 1 cubic meter of concrete = 0.98/0.1345 = 7.29 bags of cement. The quantities of materials for 1 m3 of concrete production can be calculated as follows: The weight of cement required = 7.29 x 50 = 364.5 kg.