Quantity of cement = 1/5.5 × 15.4 m3 × 1440 kg/m3 = 4032 kg, no of bag cement for 10m3 rcc slab 1:1.5:3 (m20) = 4032/50 = 80.64. If rate of cement = INR 350 per bag, then cost of 80.64 bags cement = 80.64×350 = INR 28224. step 3, Sand quantity :- generally sand measured in CFT and 1m3 = 35.3147.

Learn MoreIS 456-2000 has designated the concrete mixes into a number of grades as M10, M15, M20, M25, M30, M35 and M40. In this designation the letter M refers to the mix and the number to the specified 28 day cube strength of mix in N/mm 2. The mixes of grades M10, M15, M20 and M25 correspond approximately to the mix proportions (1:3:6), (1:2:4), (1:1 ...

Learn More2/15/2016 · Remove the excess concrete and level the surface with a trowel. Clean away the mortar or water leaked out between the mould and the base plate. Raise the mould from the concrete immediately and slowly in vertical direction. Measure the slump as the difference between the height of the mould and that of height point of the specimen being tested.

Learn More9/2/2011 · Design of Reinforced Concrete Beams 2.0 NOTATION min max Compression face to point on surface of concrete Where crack width is calculated Centre-to-centre distance between bars or groups of bars Point on surface of concrete to nearest face of a bar Gross area of concrete in a section

Learn More5/18/2018 · As we assumed M20 grade concrete mix which bear a max load upto 20N/mm². Minimum Strength to be achieved at different days: 65% @7 days: 90% @14 days: 99% @28 days: Percentage of Concrete gain (test results) (13.7x100)/20 = 68.5%>65% (18.13x100)/20 = …

Learn MoreThe Coefficient of friction between base slab and concrete=0.55 Adopt M20 grade concrete and Fe415 grade steel. 9. a) What are the design principles involved in the different components of counterfort retaining wall. b) Write down the steps involved in the design of counterfort retaining wall. 10.

Learn More10/11/2020 · steps involved in the concreting process are : 1. Batching 2. Mixing 3. Transporting and placing of concrete 4. Compacting. Q.4) What are the Nominal Concrete Mix proportions for different grades? Nominal mix concrete used for concrete of M-20 or lower. M5- 1:5:10, M7.5- 1:4:8, M15- …

Learn MoreIn this article, we are going to discuss how to construct an RCC residential house in India. This will be very useful for entry-level engineers or anyone who wants to understand the different process and steps involved in the construction of the house in India.

Learn Moreshear stress at the support. Use M20 concrete and Fe 250 steel. 4 A singly reinforced concrete beam is 400x450 mm deep to the centre of tension reinforcement which consists of 4 bars of 16mm diameter. If the safe stresses on concrete and steel are 7 N / mm2 and 230 N / mm2 respectively, find the moment of resistance of the section.

Learn More9/30/2020 · Large number of trial casting were carried out for each grade of concrete (i.e., M20, M25, M30, M35 and M40) with different water cement ratio and three paste contents in excess of void content.

Learn MoreIn order to perform rate analysis for reinforced concrete, two steps are involved: 1- Estimation of number of labour and equipment, quantity of materials, miscellaneous items required for for a certain quantity of reinforced concrete. 2- Determination of structural element for which the rate analysis is needed.

Learn Morewater is to be 4m, including a free board of 200mm.Use M20 concrete. 15. An open rectangular tank 4m x 6m x 3m deep rests on firm ground. Design the tank. Use M20 mix. 16. Design an underground water tank 4m x 10m x 3m deep. The sub soil consist of sand having angle of repose of 30 degree and saturated unit weight of 17KN/m 3.The water

Learn MoreSteps must be taken to ensure that this information is conveyed to all those involved in installation, tightening, and inspection. Snug tightening When snug tightening is used as the first stage for full tightening in procedures 8.8/TF and 8.8/TB, the intention is …

Learn MoreTypes of reinforced concrete beams a)Singly reinforced beam b)Doubly reinforced beam c)Singly or Doubly reinforced flanged beams Singly reinforced beam In singly reinforced simply supported beams or slabs reinforcing steel bars are placed near the bottom of the beam or slabs where they are most effective in resisting the tensile stresses.

Learn MoreThe compression test on concrete shows the compression strength of concrete. Hence compression test is conducted on M20 concrete. The deformation and stress values are very less in the full concrete cases. But the structure without concrete allows more stress and large deformation of structures.

Learn MoreA normal performance concrete mix has a performance strength ranging between 20 and 40 MPa. It is the more used mix of the two. Normal performance concrete has good workability if all of the mix ingredients are in accurate proportions. When freshly mixed, the concrete must be plastic or semi-fluid so that it can be molded. High-Performance Concrete

Learn More11/11/2020 · If you are constructing a slab, the minimum thickness of concrete slab is 100 mm but the preferred thickness is 150 mm. The thickness (dimensions) of reinforced concrete columns and beams varies as it depends upon the load a building is designed to carry. The Plain Cement Concrete laid before laying the foundation is usually 75 mm.

Learn MoreAs per the regulations, the desirable concrete grade is M20 and the desired concrete strength is 20MPa for the plinth beam construction. In case, the concrete mix is to be mixed manually, 20% extra cement must be added to account for the possible losses during the mixing. ... The general steps involved in the design process can be listed as ...

Learn MoreConcrete mix design is often mistakenly referred to as “cement mix design.” However, cement is simply one of the ingredients of concrete. It is a binding substance that allows concrete to set, harden, and adhere to other materials. Therefore, it cannot and should not be used interchangeably with concrete …

Learn More6/26/2020 · Que. 27) What is the Mix Ratio for M20 Grade of Concrete? Answer: M20 – 1:1.5:3. Que. 28) What are the steps involved in Concrete process? Answer: Following are the major steps involved in the Concrete process: (a) Batching (b) Mixing (c) Transporting (d) Placing of Concrete (e) Compacting.

Learn MoreMaterials, Machinery, Labours and Overheads involved. New rates of these items can be worked out easily by changing the rates of materials and labours based on current market rates. It is useful for Consultants, Contractors, Architects and Builders for preparing the Rate Analysis of items like ... RCC M20 Rcc M20 (1:1.5:3) concrete in

Learn Moresteps involved in the concreting process are : 1. Batching 2. Mixing 3. Transporting and placing of concrete 4. Compacting. Q.4) What are the Nominal Concrete Mix proportions for different grades ? Nominal mix concrete used for concrete of M-20 or lower. M5- 1:5:10, M7.5- 1:4:8, M15- 1:2:4, M20-1:1.5:3 Q.5) What is ductility?

Learn MoreConcrete is the best choice for are an easier, efficient and economic way for construction projects. Know all about it here in 13 detailed steps.

Learn More1/18/2019 · How do we use the measuring box for batching different grades of concrete ? 1.Let us say we want to mix a concrete of grade M20 . We know that the Nominal mix for M20 grade is : 1 :1.5 :3 since we are doing volumetric mix, this means that : If we take 1 part of cement by volume,

Learn MoreIt has to support concrete slab 125mm thickwith live load 3 kn/m2. Take spacing of beam 3.0m. Take M20 concrete and Fe 415.00012) Design the reinforcement for a T-beam for the following data, If beam is simplysupported on 6m span and subjected to total UDL of 60 kN/m of span.i)Spacing of beam=3.5m ii)Thickness ofslab=130mmiii)Width of web=250mm ...

Learn MoreThe concrete slump test is known as "Standard Test Method for Slump of Hydraulic-Cement Concrete" and carries the code (ASTM C 143) or (AASHTO T 119). United Kingdom & Europe In the United Kingdom, the Standards specify a slump cone height of 300-mm, a …

Learn MoreMix desgin is an important step in concreting. For this, first you should select the source of good concrete making materials. Once the sources are finalized (through testings), you can take samples and send the same to a reputed lab for mix design of M20 concrete. The mix-design is done as per IS 10262.

Learn MoreWhat is the mix design of M20 concrete?

Learn MoreM20 Ready Mix Concrete is used for building or repairing foundation walls, sidewalks, curbs, steps and ramps and for setting posts. It is uniformly blended, properly proportioned mixture of gravel, sand and Portland cement. Features:

Learn MoreConcrete Mix design helps to proportionate concrete's ingredients (cement,sand,aggregate & water) and help concrete achieve the desired strength, workability etc., Here is a detailed procedure for Concrete Mix design as per IS 10262:2009

Learn MoreMar 13, 2019 · Concrete having a different mix (M15 or M20 etc) with the suitable water-cement ratio and can be prepared at the site or casting the 6 cubes after conducting the slump test. The sampling and the test is performed under the following rules and laws.

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