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SOP IN CONSTRUCTION INDUSTRY
 WITH VERY SMALL PROJECT OF 50 TO 100 RESIDENTILA FLATS WANTS TO IMPLEMENTS SOP AND BENCHMARK THE QUALITY.PL FWD THE SOP STANDARD OPERATING PROCEDURE / STD PRACTICES APPLICABLE IN THIS REGARDS
 Hi Aamit,I'm doing PMC for lot of projects as this is my specialization. Lets fix up a meeting to discuss further on this.RegardsVikram9910388348On Wednesday, 2 April 2014 7:50 PM, "aamit_69@..." <aamit_69@...> wrote:
WITH VERY SMALL PROJECT OF 50 TO 100 RESIDENTILA FLATS WANTS TO IMPLEMENTS SOP AND BENCHMARK THE QUALITY.PL FWD THE SOP STANDARD OPERATING PROCEDURE / STD PRACTICES APPLICABLE IN THIS REGARDS  what is mean by M20 anyone can explain meOn Wednesday, April 2, 2014 7:20 PM, "aamit_69@..." <aamit_69@...> wrote:
WITH VERY SMALL PROJECT OF 50 TO 100 RESIDENTILA FLATS WANTS TO IMPLEMENTS SOP AND BENCHMARK THE QUALITY.PL FWD THE SOP STANDARD OPERATING PROCEDURE / STD PRACTICES APPLICABLE IN THIS REGARDS  M20 is Grade of Concrete Means Mix ratio 20 is related strenth... M20 = 1:1.5:3 mix ratio.From: Safer Khan <engr_safer50@...>
To: engineeringcivil@yahoogroups.com
Sent: Thursday, April 17, 2014 8:57 PM
Subject: Re: [engineeringcivil] SOP IN CONSTRUCTION INDUSTRYwhat is mean by M20 anyone can explain meOn Wednesday, April 2, 2014 7:20 PM, "aamit_69@..." <aamit_69@...> wrote:WITH VERY SMALL PROJECT OF 50 TO 100 RESIDENTILA FLATS WANTS TO IMPLEMENTS SOP AND BENCHMARK THE QUALITY.PL FWD THE SOP STANDARD OPERATING PROCEDURE / STD PRACTICES APPLICABLE IN THIS REGARDS  M20 is Grade of Concrete Means Mix ratio 20 is related strenth... M20 = 1:2:4 mix ratio. 1cum of M20 contains 6.22 bags of cement.On Thursday, April 17, 2014 11:27 PM, Safer Khan <engr_safer50@...> wrote:
what is mean by M20 anyone can explain meOn Wednesday, April 2, 2014 7:20 PM, "aamit_69@..." <aamit_69@...> wrote:
WITH VERY SMALL PROJECT OF 50 TO 100 RESIDENTILA FLATS WANTS TO IMPLEMENTS SOP AND BENCHMARK THE QUALITY.PL FWD THE SOP STANDARD OPERATING PROCEDURE / STD PRACTICES APPLICABLE IN THIS REGARDS  M20 is not 1:2:4. Any mix that produce a strength of 20 N /mm2 is M20. The cement content or any constituent are not fixed but they are inter related.Biju P. VargheseOn Monday, 5 May 2014 3:28 PM, ROMAAN Mehboob <romaanmehboob@...> wrote:
M20 is Grade of Concrete Means Mix ratio 20 is related strenth... M20 = 1:2:4 mix ratio. 1cum of M20 contains 6.22 bags of cement.On Thursday, April 17, 2014 11:27 PM, Safer Khan <engr_safer50@...> wrote:
what is mean by M20 anyone can explain meOn Wednesday, April 2, 2014 7:20 PM, "aamit_69@..." <aamit_69@...> wrote:
WITH VERY SMALL PROJECT OF 50 TO 100 RESIDENTILA FLATS WANTS TO IMPLEMENTS SOP AND BENCHMARK THE QUALITY.PL FWD THE SOP STANDARD OPERATING PROCEDURE / STD PRACTICES APPLICABLE IN THIS REGARDS  M20 mix ratio is 1: 1.5: 3 contains 8.64 bags of cementFrom: ROMAAN Mehboob <romaanmehboob@...>
To: engineeringcivil@yahoogroups.com
Sent: Thursday, May 1, 2014 8:58 PM
Subject: Re: [engineeringcivil] SOP IN CONSTRUCTION INDUSTRYM20 is Grade of Concrete Means Mix ratio 20 is related strenth... M20 = 1:2:4 mix ratio. 1cum of M20 contains 6.22 bags of cement.On Thursday, April 17, 2014 11:27 PM, Safer Khan <engr_safer50@...> wrote:what is mean by M20 anyone can explain meOn Wednesday, April 2, 2014 7:20 PM, "aamit_69@..." <aamit_69@...> wrote:WITH VERY SMALL PROJECT OF 50 TO 100 RESIDENTILA FLATS WANTS TO IMPLEMENTS SOP AND BENCHMARK THE QUALITY.PL FWD THE SOP STANDARD OPERATING PROCEDURE / STD PRACTICES APPLICABLE IN THIS REGARDS  M stands for mix.number 20 indicates the strength of of concrete at 28th day after curing in N/mm2. strength can be attained by design mix, based on mix design IS 10262.by nomial mix 1:1.5:3On Friday, May 9, 2014 11:38 PM, "Bijup Varghese bijup.varghese@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:
M20 is not 1:2:4. Any mix that produce a strength of 20 N /mm2 is M20. The cement content or any constituent are not fixed but they are inter related.Biju P. VargheseOn Monday, 5 May 2014 3:28 PM, ROMAAN Mehboob <romaanmehboob@...> wrote:
M20 is Grade of Concrete Means Mix ratio 20 is related strenth... M20 = 1:2:4 mix ratio. 1cum of M20 contains 6.22 bags of cement.On Thursday, April 17, 2014 11:27 PM, Safer Khan <engr_safer50@...> wrote:
what is mean by M20 anyone can explain meOn Wednesday, April 2, 2014 7:20 PM, "aamit_69@..." <aamit_69@...> wrote:
WITH VERY SMALL PROJECT OF 50 TO 100 RESIDENTILA FLATS WANTS TO IMPLEMENTS SOP AND BENCHMARK THE QUALITY.PL FWD THE SOP STANDARD OPERATING PROCEDURE / STD PRACTICES APPLICABLE IN THIS REGARDS  Which code give you this ratio and this cement?This is wrong.On Saturday, 10 May 2014 12:11 PM, "dhanush durai dhanushkodidurai@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:
M20 mix ratio is 1: 1.5: 3 contains 8.64 bags of cementFrom: ROMAAN Mehboob <romaanmehboob@...>
To: engineeringcivil@yahoogroups.com
Sent: Thursday, May 1, 2014 8:58 PM
Subject: Re: [engineeringcivil] SOP IN CONSTRUCTION INDUSTRYM20 is Grade of Concrete Means Mix ratio 20 is related strenth... M20 = 1:2:4 mix ratio. 1cum of M20 contains 6.22 bags of cement.On Thursday, April 17, 2014 11:27 PM, Safer Khan <engr_safer50@...> wrote:what is mean by M20 anyone can explain meOn Wednesday, April 2, 2014 7:20 PM, "aamit_69@..." <aamit_69@...> wrote:WITH VERY SMALL PROJECT OF 50 TO 100 RESIDENTILA FLATS WANTS TO IMPLEMENTS SOP AND BENCHMARK THE QUALITY.PL FWD THE SOP STANDARD OPERATING PROCEDURE / STD PRACTICES APPLICABLE IN THIS REGARDS  1:2:4 is only M15 if required M20 we have to slightly modify mix as design mix to get strengthK.S. VenkataramanPh: 9585504026
From: "Bijup Varghese bijup.varghese@... [engineeringcivil]" <engineeringcivil@yahoogroups.com>
To: engineeringcivil@yahoogroups.com
Sent: Monday, 5 May 2014 10:24 PM
Subject: Re: [engineeringcivil] SOP IN CONSTRUCTION INDUSTRY
M20 is not 1:2:4. Any mix that produce a strength of 20 N /mm2 is M20. The cement content or any constituent are not fixed but they are inter related.Biju P. VargheseOn Monday, 5 May 2014 3:28 PM, ROMAAN Mehboob <romaanmehboob@...> wrote:
M20 is Grade of Concrete Means Mix ratio 20 is related strenth... M20 = 1:2:4 mix ratio. 1cum of M20 contains 6.22 bags of cement.On Thursday, April 17, 2014 11:27 PM, Safer Khan <engr_safer50@...> wrote:
what is mean by M20 anyone can explain meOn Wednesday, April 2, 2014 7:20 PM, "aamit_69@..." <aamit_69@...> wrote:
WITH VERY SMALL PROJECT OF 50 TO 100 RESIDENTILA FLATS WANTS TO IMPLEMENTS SOP AND BENCHMARK THE QUALITY.PL FWD THE SOP STANDARD OPERATING PROCEDURE / STD PRACTICES APPLICABLE IN THIS REGARDS  M20: M= Mix Design20= characteristic comreive strength of concrete at 28 days of currring.M20 mix ratio is 1: 1.5: 3 contains 6.90 bags of cementOn Saturday, 10 May 2014 12:08 PM, "dhanush durai dhanushkodidurai@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:
M20 mix ratio is 1: 1.5: 3 contains 8.64 bags of cementFrom: ROMAAN Mehboob <romaanmehboob@...>
To: engineeringcivil@yahoogroups.com
Sent: Thursday, May 1, 2014 8:58 PM
Subject: Re: [engineeringcivil] SOP IN CONSTRUCTION INDUSTRYM20 is Grade of Concrete Means Mix ratio 20 is related strenth... M20 = 1:2:4 mix ratio. 1cum of M20 contains 6.22 bags of cement.On Thursday, April 17, 2014 11:27 PM, Safer Khan <engr_safer50@...> wrote:what is mean by M20 anyone can explain meOn Wednesday, April 2, 2014 7:20 PM, "aamit_69@..." <aamit_69@...> wrote:WITH VERY SMALL PROJECT OF 50 TO 100 RESIDENTILA FLATS WANTS TO IMPLEMENTS SOP AND BENCHMARK THE QUALITY.PL FWD THE SOP STANDARD OPERATING PROCEDURE / STD PRACTICES APPLICABLE IN THIS REGARDS  how to calculate the cement bags in this ratioOn Wednesday, May 14, 2014 11:44 AM, "Vaibhav Jadhav civil_vaibhav@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:
M20: M= Mix Design20= characteristic comreive strength of concrete at 28 days of currring.M20 mix ratio is 1: 1.5: 3 contains 6.90 bags of cementOn Saturday, 10 May 2014 12:08 PM, "dhanush durai dhanushkodidurai@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:
M20 mix ratio is 1: 1.5: 3 contains 8.64 bags of cementFrom: ROMAAN Mehboob <romaanmehboob@...>
To: engineeringcivil@yahoogroups.com
Sent: Thursday, May 1, 2014 8:58 PM
Subject: Re: [engineeringcivil] SOP IN CONSTRUCTION INDUSTRYM20 is Grade of Concrete Means Mix ratio 20 is related strenth... M20 = 1:2:4 mix ratio. 1cum of M20 contains 6.22 bags of cement.On Thursday, April 17, 2014 11:27 PM, Safer Khan <engr_safer50@...> wrote:what is mean by M20 anyone can explain meOn Wednesday, April 2, 2014 7:20 PM, "aamit_69@..." <aamit_69@...> wrote:WITH VERY SMALL PROJECT OF 50 TO 100 RESIDENTILA FLATS WANTS TO IMPLEMENTS SOP AND BENCHMARK THE QUALITY.PL FWD THE SOP STANDARD OPERATING PROCEDURE / STD PRACTICES APPLICABLE IN THIS REGARDS  Today at 9:40 PMhow to calculate the cement bags in this ratioShow message historyOn , Safer Khan <engr_safer50@...> wrote:
how to calculate the cement bags in this ratioOn Wednesday, May 14, 2014 11:44 AM, "Vaibhav Jadhav civil_vaibhav@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:
M20: M= Mix Design20= characteristic comreive strength of concrete at 28 days of currring.M20 mix ratio is 1: 1.5: 3 contains 6.90 bags of cementOn Saturday, 10 May 2014 12:08 PM, "dhanush durai dhanushkodidurai@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:
M20 mix ratio is 1: 1.5: 3 contains 8.64 bags of cementFrom: ROMAAN Mehboob <romaanmehboob@...>
To: engineeringcivil@yahoogroups.com
Sent: Thursday, May 1, 2014 8:58 PM
Subject: Re: [engineeringcivil] SOP IN CONSTRUCTION INDUSTRYM20 is Grade of Concrete Means Mix ratio 20 is related strenth... M20 = 1:2:4 mix ratio. 1cum of M20 contains 6.22 bags of cement.On Thursday, April 17, 2014 11:27 PM, Safer Khan <engr_safer50@...> wrote:what is mean by M20 anyone can explain meOn Wednesday, April 2, 2014 7:20 PM, "aamit_69@..." <aamit_69@...> wrote:WITH VERY SMALL PROJECT OF 50 TO 100 RESIDENTILA FLATS WANTS TO IMPLEMENTS SOP AND BENCHMARK THE QUALITY.PL FWD THE SOP STANDARD OPERATING PROCEDURE / STD PRACTICES APPLICABLE IN THIS REGARDS  You said how to calculate cement bag in ration...Sol : Lets take M20 : 1:1.5:3 , Vol. of Mixture  1Cum3 is aggregate , 1.5 is Dust , 1 is cementLets do : 1+1.5+3 = 5.5Aggregate := (3/5.5)*1= 0.54 mtDust : (1.5/5.5)*1= 0.27Cement : = (1/5.5)*1= 0.18Now in cement we have to find out bagSo, Vol. of cement x Density / 50
Vol. of cement = 0.18Density = 1440So we do, =(0.18*1440) /50= 5.23 bagsInclude Wastage = 5%Aprrox 6 bags in 1 cum mixture of M20On Thu, May 15, 2014 at 10:10 AM, Safer Khan engr_safer50@... [engineeringcivil] <engineeringcivil@yahoogroups.com> wrote:how to calculate the cement bags in this ratioOn Wednesday, May 14, 2014 11:44 AM, "Vaibhav Jadhav civil_vaibhav@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:M20: M= Mix Design20= characteristic comreive strength of concrete at 28 days of currring.M20 mix ratio is 1: 1.5: 3 contains 6.90 bags of cement
On Saturday, 10 May 2014 12:08 PM, "dhanush durai dhanushkodidurai@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:
M20 mix ratio is 1: 1.5: 3 contains 8.64 bags of cementFrom: ROMAAN Mehboob <romaanmehboob@...>
To: engineeringcivil@yahoogroups.com
Sent: Thursday, May 1, 2014 8:58 PM
Subject: Re: [engineeringcivil] SOP IN CONSTRUCTION INDUSTRYM20 is Grade of Concrete Means Mix ratio 20 is related strenth... M20 = 1:2:4 mix ratio. 1cum of M20 contains 6.22 bags of cement.On Thursday, April 17, 2014 11:27 PM, Safer Khan <engr_safer50@...> wrote:what is mean by M20 anyone can explain meWITH VERY SMALL PROJECT OF 50 TO 100 RESIDENTILA FLATS WANTS TO IMPLEMENTS SOP AND BENCHMARK THE QUALITY.PL FWD THE SOP STANDARD OPERATING PROCEDURE / STD PRACTICES APPLICABLE IN THIS REGARDSBR\\ CEO\\ SBSanins Infra Solution Hi
M20 is a concrete having charecteristic compressive strength of 20N/sq.mm or more on 28th day. All of us agree to it.But difference in opinion is on how to obtain it. There are two ways as approved by Indian standards. Firstly by mix design as per IS 10262 Second way is to use the nominal mix proposed by IS456:2000
Nominal mix for shall be proportioned as per table 9 of IS 456. As per table 9 of Is 456, Total quantity of aggregate is 250kg per 50kg of cement (1 bag ) Total aggregate can be proportioned in a ratio 1:1.5 to 1:2.5 (taken normally as 1:2) with maximum water content of 30l.
The minimum cement content and maximum free water cement ratio can be obtained from table 5 for the required exposure conditions and grade of concrete.
Regards,
Vaisakh Gopinadhan
Principal Consultant,
TEC Engineering & Contracting,
Punnala, Piravanthoor Via,
Kollam, Kerala, India
http://vaisakhg.blogspot.com/
Mobile +91 9656840794On May 24, 2014 2:16 PM, "konvicted konvicted sanjay.konvict@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:You said how to calculate cement bag in ration...Sol : Lets take M20 : 1:1.5:3 , Vol. of Mixture  1Cum3 is aggregate , 1.5 is Dust , 1 is cementLets do : 1+1.5+3 = 5.5Aggregate := (3/5.5)*1= 0.54 mtDust : (1.5/5.5)*1= 0.27Cement : = (1/5.5)*1= 0.18Now in cement we have to find out bagSo, Vol. of cement x Density / 50
Vol. of cement = 0.18Density = 1440So we do, =(0.18*1440) /50= 5.23 bagsInclude Wastage = 5%Aprrox 6 bags in 1 cum mixture of M20On Thu, May 15, 2014 at 10:10 AM, Safer Khan engr_safer50@... [engineeringcivil] <engineeringcivil@yahoogroups.com> wrote:how to calculate the cement bags in this ratioOn Wednesday, May 14, 2014 11:44 AM, "Vaibhav Jadhav civil_vaibhav@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:M20: M= Mix Design20= characteristic comreive strength of concrete at 28 days of currring.M20 mix ratio is 1: 1.5: 3 contains 6.90 bags of cementOn Saturday, 10 May 2014 12:08 PM, "dhanush durai dhanushkodidurai@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:M20 mix ratio is 1: 1.5: 3 contains 8.64 bags of cementFrom: ROMAAN Mehboob <romaanmehboob@...>
To: engineeringcivil@yahoogroups.com
Sent: Thursday, May 1, 2014 8:58 PM
Subject: Re: [engineeringcivil] SOP IN CONSTRUCTION INDUSTRYM20 is Grade of Concrete Means Mix ratio 20 is related strenth... M20 = 1:2:4 mix ratio. 1cum of M20 contains 6.22 bags of cement.On Thursday, April 17, 2014 11:27 PM, Safer Khan <engr_safer50@...> wrote:what is mean by M20 anyone can explain meWITH VERY SMALL PROJECT OF 50 TO 100 RESIDENTILA FLATS WANTS TO IMPLEMENTS SOP AND BENCHMARK THE QUALITY.PL FWD THE SOP STANDARD OPERATING PROCEDURE / STD PRACTICES APPLICABLE IN THIS REGARDSBR\\ CEO\\ SBSanins Infra SolutionAny one suggest me for preparation of interview in a construction company...
What should I do??
On 23 May 2014 00:23, "Krishna Teja krishnateja62@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:M stands for mix.number 20 indicates the strength of of concrete at 28th day after curing in N/mm2. strength can be attained by design mix, based on mix design IS 10262.by nomial mix 1:1.5:3
On Friday, May 9, 2014 11:38 PM, "Bijup Varghese bijup.varghese@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:
M20 is not 1:2:4. Any mix that produce a strength of 20 N /mm2 is M20. The cement content or any constituent are not fixed but they are inter related.Biju P. VargheseOn Monday, 5 May 2014 3:28 PM, ROMAAN Mehboob <romaanmehboob@...> wrote:
M20 is Grade of Concrete Means Mix ratio 20 is related strenth... M20 = 1:2:4 mix ratio. 1cum of M20 contains 6.22 bags of cement.On Thursday, April 17, 2014 11:27 PM, Safer Khan <engr_safer50@...> wrote:
what is mean by M20 anyone can explain meWITH VERY SMALL PROJECT OF 50 TO 100 RESIDENTILA FLATS WANTS TO IMPLEMENTS SOP AND BENCHMARK THE QUALITY.PL FWD THE SOP STANDARD OPERATING PROCEDURE / STD PRACTICES APPLICABLE IN THIS REGARDS Very useful information. Thanks to every one.Please can anybody let us know the quantity of sand and coarse aggregate in 1 cum of concrete. If suppose M20.
Sent from my iPhoneOn 12Jun2014, at 8:51 am, "Vaisakh Gopinadhan tec.cea@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:
Hi
M20 is a concrete having charecteristic compressive strength of 20N/sq.mm or more on 28th day. All of us agree to it.But difference in opinion is on how to obtain it. There are two ways as approved by Indian standards. Firstly by mix design as per IS 10262 Second way is to use the nominal mix proposed by IS456:2000
Nominal mix for shall be proportioned as per table 9 of IS 456. As per table 9 of Is 456, Total quantity of aggregate is 250kg per 50kg of cement (1 bag ) Total aggregate can be proportioned in a ratio 1:1.5 to 1:2.5 (taken normally as 1:2) with maximum water content of 30l.
The minimum cement content and maximum free water cement ratio can be obtained from table 5 for the required exposure conditions and grade of concrete.
Regards,
Vaisakh Gopinadhan
Principal Consultant,
TEC Engineering & Contracting,
Punnala, Piravanthoor Via,
Kollam, Kerala, India
http://vaisakhg.blogspot.com/
Mobile +91 9656840794On May 24, 2014 2:16 PM, "konvicted konvicted sanjay.konvict@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:You said how to calculate cement bag in ration...Sol : Lets take M20 : 1:1.5:3 , Vol. of Mixture  1Cum3 is aggregate , 1.5 is Dust , 1 is cementLets do : 1+1.5+3 = 5.5Aggregate := (3/5.5)*1= 0.54 mtDust : (1.5/5.5)*1= 0.27Cement : = (1/5.5)*1= 0.18Now in cement we have to find out bagSo, Vol. of cement x Density / 50
Vol. of cement = 0.18Density = 1440So we do, =(0.18*1440) /50= 5.23 bagsInclude Wastage = 5%Aprrox 6 bags in 1 cum mixture of M20On Thu, May 15, 2014 at 10:10 AM, Safer Khan engr_safer50@... [engineeringcivil] <engineeringcivil@yahoogroups.com> wrote:how to calculate the cement bags in this ratioOn Wednesday, May 14, 2014 11:44 AM, "Vaibhav Jadhav civil_vaibhav@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:M20: M= Mix Design20= characteristic comreive strength of concrete at 28 days of currring.M20 mix ratio is 1: 1.5: 3 contains 6.90 bags of cementOn Saturday, 10 May 2014 12:08 PM, "dhanush durai dhanushkodidurai@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:M20 mix ratio is 1: 1.5: 3 contains 8.64 bags of cementFrom: ROMAAN Mehboob <romaanmehboob@...>
To: engineeringcivil@yahoogroups.com
Sent: Thursday, May 1, 2014 8:58 PM
Subject: Re: [engineeringcivil] SOP IN CONSTRUCTION INDUSTRYM20 is Grade of Concrete Means Mix ratio 20 is related strenth... M20 = 1:2:4 mix ratio. 1cum of M20 contains 6.22 bags of cement.On Thursday, April 17, 2014 11:27 PM, Safer Khan <engr_safer50@...> wrote:what is mean by M20 anyone can explain meWITH VERY SMALL PROJECT OF 50 TO 100 RESIDENTILA FLATS WANTS TO IMPLEMENTS SOP AND BENCHMARK THE QUALITY.PL FWD THE SOP STANDARD OPERATING PROCEDURE / STD PRACTICES APPLICABLE IN THIS REGARDSBR\\ CEO\\ SBSanins Infra SolutionReply via web post • Reply to sender • Reply to group • Start a New Topic • Messages in this topic (15)  Concrete prepared as per the ratio given in IS 456 is not M20. It will give more strength definitely. To get M20 it must be a disign mix.Biju P. VargheseOn Monday, 16 June 2014 12:27 PM, "Vaisakh Gopinadhan tec.cea@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:
Hi
M20 is a concrete having charecteristic compressive strength of 20N/sq.mm or more on 28th day. All of us agree to it.But difference in opinion is on how to obtain it. There are two ways as approved by Indian standards. Firstly by mix design as per IS 10262 Second way is to use the nominal mix proposed by IS456:2000Nominal mix for shall be proportioned as per table 9 of IS 456. As per table 9 of Is 456, Total quantity of aggregate is 250kg per 50kg of cement (1 bag ) Total aggregate can be proportioned in a ratio 1:1.5 to 1:2.5 (taken normally as 1:2) with maximum water content of 30l.The minimum cement content and maximum free water cement ratio can be obtained from table 5 for the required exposure conditions and grade of concrete.Regards,
Vaisakh Gopinadhan
Principal Consultant,
TEC Engineering & Contracting,
Punnala, Piravanthoor Via,
Kollam, Kerala, India
http://vaisakhg.blogspot.com/
Mobile +91 9656840794On May 24, 2014 2:16 PM, "konvicted konvicted sanjay.konvict@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:You said how to calculate cement bag in ration...Sol : Lets take M20 : 1:1.5:3 , Vol. of Mixture  1Cum3 is aggregate , 1.5 is Dust , 1 is cementLets do : 1+1.5+3 = 5.5Aggregate := (3/5.5)*1= 0.54 mtDust : (1.5/5.5)*1= 0.27Cement : = (1/5.5)*1= 0.18Now in cement we have to find out bagSo, Vol. of cement x Density / 50
Vol. of cement = 0.18Density = 1440So we do, =(0.18*1440) /50= 5.23 bagsInclude Wastage = 5%Aprrox 6 bags in 1 cum mixture of M20On Thu, May 15, 2014 at 10:10 AM, Safer Khan engr_safer50@... [engineeringcivil] <engineeringcivil@yahoogroups.com> wrote:how to calculate the cement bags in this ratioOn Wednesday, May 14, 2014 11:44 AM, "Vaibhav Jadhav civil_vaibhav@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:M20: M= Mix Design20= characteristic comreive strength of concrete at 28 days of currring.M20 mix ratio is 1: 1.5: 3 contains 6.90 bags of cementOn Saturday, 10 May 2014 12:08 PM, "dhanush durai dhanushkodidurai@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:M20 mix ratio is 1: 1.5: 3 contains 8.64 bags of cementFrom: ROMAAN Mehboob <romaanmehboob@...>
To: engineeringcivil@yahoogroups.com
Sent: Thursday, May 1, 2014 8:58 PM
Subject: Re: [engineeringcivil] SOP IN CONSTRUCTION INDUSTRYM20 is Grade of Concrete Means Mix ratio 20 is related strenth... M20 = 1:2:4 mix ratio. 1cum of M20 contains 6.22 bags of cement.On Thursday, April 17, 2014 11:27 PM, Safer Khan <engr_safer50@...> wrote:what is mean by M20 anyone can explain meWITH VERY SMALL PROJECT OF 50 TO 100 RESIDENTILA FLATS WANTS TO IMPLEMENTS SOP AND BENCHMARK THE QUALITY.PL FWD THE SOP STANDARD OPERATING PROCEDURE / STD PRACTICES APPLICABLE IN THIS REGARDSBR\\ CEO\\ SBSanins Infra Solution  Dear sir,how to calculate lap length for column as well as beamRegard`sRahmanOn Monday, 16 June 2014 12:27 PM, "Vaisakh Gopinadhan tec.cea@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:
Hi
M20 is a concrete having charecteristic compressive strength of 20N/sq.mm or more on 28th day. All of us agree to it.But difference in opinion is on how to obtain it. There are two ways as approved by Indian standards. Firstly by mix design as per IS 10262 Second way is to use the nominal mix proposed by IS456:2000Nominal mix for shall be proportioned as per table 9 of IS 456. As per table 9 of Is 456, Total quantity of aggregate is 250kg per 50kg of cement (1 bag ) Total aggregate can be proportioned in a ratio 1:1.5 to 1:2.5 (taken normally as 1:2) with maximum water content of 30l.The minimum cement content and maximum free water cement ratio can be obtained from table 5 for the required exposure conditions and grade of concrete.Regards,
Vaisakh Gopinadhan
Principal Consultant,
TEC Engineering & Contracting,
Punnala, Piravanthoor Via,
Kollam, Kerala, India
http://vaisakhg.blogspot.com/
Mobile +91 9656840794On May 24, 2014 2:16 PM, "konvicted konvicted sanjay.konvict@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:You said how to calculate cement bag in ration...Sol : Lets take M20 : 1:1.5:3 , Vol. of Mixture  1Cum3 is aggregate , 1.5 is Dust , 1 is cementLets do : 1+1.5+3 = 5.5Aggregate := (3/5.5)*1= 0.54 mtDust : (1.5/5.5)*1= 0.27Cement : = (1/5.5)*1= 0.18Now in cement we have to find out bagSo, Vol. of cement x Density / 50
Vol. of cement = 0.18Density = 1440So we do, =(0.18*1440) /50= 5.23 bagsInclude Wastage = 5%Aprrox 6 bags in 1 cum mixture of M20On Thu, May 15, 2014 at 10:10 AM, Safer Khan engr_safer50@... [engineeringcivil] <engineeringcivil@yahoogroups.com> wrote:how to calculate the cement bags in this ratioOn Wednesday, May 14, 2014 11:44 AM, "Vaibhav Jadhav civil_vaibhav@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:M20: M= Mix Design20= characteristic comreive strength of concrete at 28 days of currring.M20 mix ratio is 1: 1.5: 3 contains 6.90 bags of cementOn Saturday, 10 May 2014 12:08 PM, "dhanush durai dhanushkodidurai@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:M20 mix ratio is 1: 1.5: 3 contains 8.64 bags of cementFrom: ROMAAN Mehboob <romaanmehboob@...>
To: engineeringcivil@yahoogroups.com
Sent: Thursday, May 1, 2014 8:58 PM
Subject: Re: [engineeringcivil] SOP IN CONSTRUCTION INDUSTRYM20 is Grade of Concrete Means Mix ratio 20 is related strenth... M20 = 1:2:4 mix ratio. 1cum of M20 contains 6.22 bags of cement.On Thursday, April 17, 2014 11:27 PM, Safer Khan <engr_safer50@...> wrote:what is mean by M20 anyone can explain meWITH VERY SMALL PROJECT OF 50 TO 100 RESIDENTILA FLATS WANTS TO IMPLEMENTS SOP AND BENCHMARK THE QUALITY.PL FWD THE SOP STANDARD OPERATING PROCEDURE / STD PRACTICES APPLICABLE IN THIS REGARDSBR\\ CEO\\ SBSanins Infra Solution Hi
The proportion given in the code is only nominal. It is so designed that it may yield the required strength in 95% cases. Not to yield exactly 20MPa.
Same is the case of mix design. If you design for M20, it is not expected to give you exactly 20MPa . It is coupled with a standard deviation. Those mix which gives you exactly 20 MPa cannot be called as M20. Please read acceptance criteria in IS 456 : 2000.The difference lies in the testing of materials. In design mixes, we are testing properties of material, and hence the designer can work with closer tolerances. In the case of nominal mix which is not based on material properties, the tolerances will be more and hence the mix will be more uneconomical.
Regards,
Vaisakh Gopinadhan
Principal Consultant,
TEC Engineering & Contracting,
Punnala, Piravanthoor Via,
Kollam, Kerala, India
http://vaisakhg.blogspot.com/
Mobile +91 9656840794On Jun 21, 2014 1:50 PM, "Bijup Varghese bijup.varghese@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:Concrete prepared as per the ratio given in IS 456 is not M20. It will give more strength definitely. To get M20 it must be a disign mix.Biju P. VargheseOn Monday, 16 June 2014 12:27 PM, "Vaisakh Gopinadhan tec.cea@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:Hi
M20 is a concrete having charecteristic compressive strength of 20N/sq.mm or more on 28th day. All of us agree to it.But difference in opinion is on how to obtain it. There are two ways as approved by Indian standards. Firstly by mix design as per IS 10262 Second way is to use the nominal mix proposed by IS456:2000Nominal mix for shall be proportioned as per table 9 of IS 456. As per table 9 of Is 456, Total quantity of aggregate is 250kg per 50kg of cement (1 bag ) Total aggregate can be proportioned in a ratio 1:1.5 to 1:2.5 (taken normally as 1:2) with maximum water content of 30l.The minimum cement content and maximum free water cement ratio can be obtained from table 5 for the required exposure conditions and grade of concrete.Regards,
Vaisakh Gopinadhan
Principal Consultant,
TEC Engineering & Contracting,
Punnala, Piravanthoor Via,
Kollam, Kerala, India
http://vaisakhg.blogspot.com/
Mobile +91 9656840794On May 24, 2014 2:16 PM, "konvicted konvicted sanjay.konvict@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:You said how to calculate cement bag in ration...Sol : Lets take M20 : 1:1.5:3 , Vol. of Mixture  1Cum3 is aggregate , 1.5 is Dust , 1 is cementLets do : 1+1.5+3 = 5.5Aggregate := (3/5.5)*1= 0.54 mtDust : (1.5/5.5)*1= 0.27Cement : = (1/5.5)*1= 0.18Now in cement we have to find out bagSo, Vol. of cement x Density / 50
Vol. of cement = 0.18Density = 1440So we do, =(0.18*1440) /50= 5.23 bagsInclude Wastage = 5%Aprrox 6 bags in 1 cum mixture of M20On Thu, May 15, 2014 at 10:10 AM, Safer Khan engr_safer50@... [engineeringcivil] <engineeringcivil@yahoogroups.com> wrote:how to calculate the cement bags in this ratioOn Wednesday, May 14, 2014 11:44 AM, "Vaibhav Jadhav civil_vaibhav@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:M20: M= Mix Design20= characteristic comreive strength of concrete at 28 days of currring.M20 mix ratio is 1: 1.5: 3 contains 6.90 bags of cementOn Saturday, 10 May 2014 12:08 PM, "dhanush durai dhanushkodidurai@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:M20 mix ratio is 1: 1.5: 3 contains 8.64 bags of cementFrom: ROMAAN Mehboob <romaanmehboob@...>
To: engineeringcivil@yahoogroups.com
Sent: Thursday, May 1, 2014 8:58 PM
Subject: Re: [engineeringcivil] SOP IN CONSTRUCTION INDUSTRYM20 is Grade of Concrete Means Mix ratio 20 is related strenth... M20 = 1:2:4 mix ratio. 1cum of M20 contains 6.22 bags of cement.On Thursday, April 17, 2014 11:27 PM, Safer Khan <engr_safer50@...> wrote:what is mean by M20 anyone can explain meWITH VERY SMALL PROJECT OF 50 TO 100 RESIDENTILA FLATS WANTS TO IMPLEMENTS SOP AND BENCHMARK THE QUALITY.PL FWD THE SOP STANDARD OPERATING PROCEDURE / STD PRACTICES APPLICABLE IN THIS REGARDSBR\\ CEO\\ SBSanins Infra Solution HelloWhy is that we consider 28days to be the standard age to determine the strength of concrete?....
On Sat, Jul 12, 2014 at 11:08 AM, Vaisakh Gopinadhan tec.cea@... [engineeringcivil] <engineeringcivil@yahoogroups.com> wrote:Hi
The proportion given in the code is only nominal. It is so designed that it may yield the required strength in 95% cases. Not to yield exactly 20MPa.
Same is the case of mix design. If you design for M20, it is not expected to give you exactly 20MPa . It is coupled with a standard deviation. Those mix which gives you exactly 20 MPa cannot be called as M20. Please read acceptance criteria in IS 456 : 2000.The difference lies in the testing of materials. In design mixes, we are testing properties of material, and hence the designer can work with closer tolerances. In the case of nominal mix which is not based on material properties, the tolerances will be more and hence the mix will be more uneconomical.
Regards,
Vaisakh Gopinadhan
Principal Consultant,
TEC Engineering & Contracting,
Punnala, Piravanthoor Via,
Kollam, Kerala, India
http://vaisakhg.blogspot.com/
Mobile +91 9656840794On Jun 21, 2014 1:50 PM, "Bijup Varghese bijup.varghese@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:Concrete prepared as per the ratio given in IS 456 is not M20. It will give more strength definitely. To get M20 it must be a disign mix.Biju P. VargheseOn Monday, 16 June 2014 12:27 PM, "Vaisakh Gopinadhan tec.cea@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:Hi
M20 is a concrete having charecteristic compressive strength of 20N/sq.mm or more on 28th day. All of us agree to it.But difference in opinion is on how to obtain it. There are two ways as approved by Indian standards. Firstly by mix design as per IS 10262 Second way is to use the nominal mix proposed by IS456:2000Nominal mix for shall be proportioned as per table 9 of IS 456. As per table 9 of Is 456, Total quantity of aggregate is 250kg per 50kg of cement (1 bag ) Total aggregate can be proportioned in a ratio 1:1.5 to 1:2.5 (taken normally as 1:2) with maximum water content of 30l.The minimum cement content and maximum free water cement ratio can be obtained from table 5 for the required exposure conditions and grade of concrete.Regards,
Vaisakh Gopinadhan
Principal Consultant,
TEC Engineering & Contracting,
Punnala, Piravanthoor Via,
Kollam, Kerala, India
http://vaisakhg.blogspot.com/
Mobile +91 9656840794On May 24, 2014 2:16 PM, "konvicted konvicted sanjay.konvict@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:You said how to calculate cement bag in ration...Sol : Lets take M20 : 1:1.5:3 , Vol. of Mixture  1Cum3 is aggregate , 1.5 is Dust , 1 is cementLets do : 1+1.5+3 = 5.5Aggregate := (3/5.5)*1= 0.54 mtDust : (1.5/5.5)*1= 0.27Cement : = (1/5.5)*1= 0.18Now in cement we have to find out bagSo, Vol. of cement x Density / 50
Vol. of cement = 0.18Density = 1440So we do, =(0.18*1440) /50= 5.23 bagsInclude Wastage = 5%Aprrox 6 bags in 1 cum mixture of M20On Thu, May 15, 2014 at 10:10 AM, Safer Khan engr_safer50@... [engineeringcivil] <engineeringcivil@yahoogroups.com> wrote:how to calculate the cement bags in this ratioOn Wednesday, May 14, 2014 11:44 AM, "Vaibhav Jadhav civil_vaibhav@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:M20: M= Mix Design20= characteristic comreive strength of concrete at 28 days of currring.M20 mix ratio is 1: 1.5: 3 contains 6.90 bags of cementOn Saturday, 10 May 2014 12:08 PM, "dhanush durai dhanushkodidurai@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:M20 mix ratio is 1: 1.5: 3 contains 8.64 bags of cementFrom: ROMAAN Mehboob <romaanmehboob@...>
To: engineeringcivil@yahoogroups.com
Sent: Thursday, May 1, 2014 8:58 PM
Subject: Re: [engineeringcivil] SOP IN CONSTRUCTION INDUSTRYM20 is Grade of Concrete Means Mix ratio 20 is related strenth... M20 = 1:2:4 mix ratio. 1cum of M20 contains 6.22 bags of cement.On Thursday, April 17, 2014 11:27 PM, Safer Khan <engr_safer50@...> wrote:what is mean by M20 anyone can explain meWITH VERY SMALL PROJECT OF 50 TO 100 RESIDENTILA FLATS WANTS TO IMPLEMENTS SOP AND BENCHMARK THE QUALITY.PL FWD THE SOP STANDARD OPERATING PROCEDURE / STD PRACTICES APPLICABLE IN THIS REGARDSBR\\ CEO\\ SBSanins Infra Solution  because concrete gains its charecterstics strength in 28 dayOn Sat, Jul 26, 2014 at 10:23 AM, Abhishek R abish92@... [engineeringcivil] <engineeringcivil@yahoogroups.com> wrote:HelloWhy is that we consider 28days to be the standard age to determine the strength of concrete?....
On Sat, Jul 12, 2014 at 11:08 AM, Vaisakh Gopinadhan tec.cea@... [engineeringcivil] <engineeringcivil@yahoogroups.com> wrote:Hi
The proportion given in the code is only nominal. It is so designed that it may yield the required strength in 95% cases. Not to yield exactly 20MPa.
Same is the case of mix design. If you design for M20, it is not expected to give you exactly 20MPa . It is coupled with a standard deviation. Those mix which gives you exactly 20 MPa cannot be called as M20. Please read acceptance criteria in IS 456 : 2000.The difference lies in the testing of materials. In design mixes, we are testing properties of material, and hence the designer can work with closer tolerances. In the case of nominal mix which is not based on material properties, the tolerances will be more and hence the mix will be more uneconomical.
Regards,
Vaisakh Gopinadhan
Principal Consultant,
TEC Engineering & Contracting,
Punnala, Piravanthoor Via,
Kollam, Kerala, India
http://vaisakhg.blogspot.com/
Mobile +91 9656840794On Jun 21, 2014 1:50 PM, "Bijup Varghese bijup.varghese@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:Concrete prepared as per the ratio given in IS 456 is not M20. It will give more strength definitely. To get M20 it must be a disign mix.Biju P. VargheseOn Monday, 16 June 2014 12:27 PM, "Vaisakh Gopinadhan tec.cea@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:Hi
M20 is a concrete having charecteristic compressive strength of 20N/sq.mm or more on 28th day. All of us agree to it.But difference in opinion is on how to obtain it. There are two ways as approved by Indian standards. Firstly by mix design as per IS 10262 Second way is to use the nominal mix proposed by IS456:2000Nominal mix for shall be proportioned as per table 9 of IS 456. As per table 9 of Is 456, Total quantity of aggregate is 250kg per 50kg of cement (1 bag ) Total aggregate can be proportioned in a ratio 1:1.5 to 1:2.5 (taken normally as 1:2) with maximum water content of 30l.The minimum cement content and maximum free water cement ratio can be obtained from table 5 for the required exposure conditions and grade of concrete.Regards,
Vaisakh Gopinadhan
Principal Consultant,
TEC Engineering & Contracting,
Punnala, Piravanthoor Via,
Kollam, Kerala, India
http://vaisakhg.blogspot.com/
Mobile +91 9656840794On May 24, 2014 2:16 PM, "konvicted konvicted sanjay.konvict@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:You said how to calculate cement bag in ration...Sol : Lets take M20 : 1:1.5:3 , Vol. of Mixture  1Cum3 is aggregate , 1.5 is Dust , 1 is cementLets do : 1+1.5+3 = 5.5Aggregate := (3/5.5)*1= 0.54 mtDust : (1.5/5.5)*1= 0.27Cement : = (1/5.5)*1= 0.18Now in cement we have to find out bagSo, Vol. of cement x Density / 50
Vol. of cement = 0.18Density = 1440So we do, =(0.18*1440) /50= 5.23 bagsInclude Wastage = 5%Aprrox 6 bags in 1 cum mixture of M20On Thu, May 15, 2014 at 10:10 AM, Safer Khan engr_safer50@... [engineeringcivil] <engineeringcivil@yahoogroups.com> wrote:how to calculate the cement bags in this ratioOn Wednesday, May 14, 2014 11:44 AM, "Vaibhav Jadhav civil_vaibhav@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:M20: M= Mix Design20= characteristic comreive strength of concrete at 28 days of currring.M20 mix ratio is 1: 1.5: 3 contains 6.90 bags of cementOn Saturday, 10 May 2014 12:08 PM, "dhanush durai dhanushkodidurai@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:M20 mix ratio is 1: 1.5: 3 contains 8.64 bags of cementFrom: ROMAAN Mehboob <romaanmehboob@...>
To: engineeringcivil@yahoogroups.com
Sent: Thursday, May 1, 2014 8:58 PM
Subject: Re: [engineeringcivil] SOP IN CONSTRUCTION INDUSTRYM20 is Grade of Concrete Means Mix ratio 20 is related strenth... M20 = 1:2:4 mix ratio. 1cum of M20 contains 6.22 bags of cement.On Thursday, April 17, 2014 11:27 PM, Safer Khan <engr_safer50@...> wrote:what is mean by M20 anyone can explain meWITH VERY SMALL PROJECT OF 50 TO 100 RESIDENTILA FLATS WANTS TO IMPLEMENTS SOP AND BENCHMARK THE QUALITY.PL FWD THE SOP STANDARD OPERATING PROCEDURE / STD PRACTICES APPLICABLE IN THIS REGARDSBR\\ CEO\\ SBSanins Infra Solution
Chander Bhal Rai
Head Of Civil Engineering Department
S.C.E.R.T BBK.
+919473634316 Because if we compare the concrete strength before and after 28days, the gain in strength after 28days are insignificant.
Regards,
Vaisakh Gopinadhan
Principal Consultant,
TEC Engineering & Contracting,
Punnala, Piravanthoor Via,
Kollam, Kerala, India
http://vaisakhg.blogspot.com/
Mobile +91 9656840794On Aug 14, 2014 6:19 PM, "Chander Rai cbrai.civil@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:because concrete gains its charecterstics strength in 28 dayOn Sat, Jul 26, 2014 at 10:23 AM, Abhishek R abish92@... [engineeringcivil] <engineeringcivil@yahoogroups.com> wrote:HelloWhy is that we consider 28days to be the standard age to determine the strength of concrete?....
On Sat, Jul 12, 2014 at 11:08 AM, Vaisakh Gopinadhan tec.cea@... [engineeringcivil] <engineeringcivil@yahoogroups.com> wrote:Hi
The proportion given in the code is only nominal. It is so designed that it may yield the required strength in 95% cases. Not to yield exactly 20MPa.
Same is the case of mix design. If you design for M20, it is not expected to give you exactly 20MPa . It is coupled with a standard deviation. Those mix which gives you exactly 20 MPa cannot be called as M20. Please read acceptance criteria in IS 456 : 2000.The difference lies in the testing of materials. In design mixes, we are testing properties of material, and hence the designer can work with closer tolerances. In the case of nominal mix which is not based on material properties, the tolerances will be more and hence the mix will be more uneconomical.
Regards,
Vaisakh Gopinadhan
Principal Consultant,
TEC Engineering & Contracting,
Punnala, Piravanthoor Via,
Kollam, Kerala, India
http://vaisakhg.blogspot.com/
Mobile +91 9656840794On Jun 21, 2014 1:50 PM, "Bijup Varghese bijup.varghese@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:Concrete prepared as per the ratio given in IS 456 is not M20. It will give more strength definitely. To get M20 it must be a disign mix.Biju P. VargheseOn Monday, 16 June 2014 12:27 PM, "Vaisakh Gopinadhan tec.cea@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:Hi
M20 is a concrete having charecteristic compressive strength of 20N/sq.mm or more on 28th day. All of us agree to it.But difference in opinion is on how to obtain it. There are two ways as approved by Indian standards. Firstly by mix design as per IS 10262 Second way is to use the nominal mix proposed by IS456:2000Nominal mix for shall be proportioned as per table 9 of IS 456. As per table 9 of Is 456, Total quantity of aggregate is 250kg per 50kg of cement (1 bag ) Total aggregate can be proportioned in a ratio 1:1.5 to 1:2.5 (taken normally as 1:2) with maximum water content of 30l.The minimum cement content and maximum free water cement ratio can be obtained from table 5 for the required exposure conditions and grade of concrete.Regards,
Vaisakh Gopinadhan
Principal Consultant,
TEC Engineering & Contracting,
Punnala, Piravanthoor Via,
Kollam, Kerala, India
http://vaisakhg.blogspot.com/
Mobile +91 9656840794On May 24, 2014 2:16 PM, "konvicted konvicted sanjay.konvict@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:You said how to calculate cement bag in ration...Sol : Lets take M20 : 1:1.5:3 , Vol. of Mixture  1Cum3 is aggregate , 1.5 is Dust , 1 is cementLets do : 1+1.5+3 = 5.5Aggregate := (3/5.5)*1= 0.54 mtDust : (1.5/5.5)*1= 0.27Cement : = (1/5.5)*1= 0.18Now in cement we have to find out bagSo, Vol. of cement x Density / 50
Vol. of cement = 0.18Density = 1440So we do, =(0.18*1440) /50= 5.23 bagsInclude Wastage = 5%Aprrox 6 bags in 1 cum mixture of M20On Thu, May 15, 2014 at 10:10 AM, Safer Khan engr_safer50@... [engineeringcivil] <engineeringcivil@yahoogroups.com> wrote:how to calculate the cement bags in this ratioOn Wednesday, May 14, 2014 11:44 AM, "Vaibhav Jadhav civil_vaibhav@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:M20: M= Mix Design20= characteristic comreive strength of concrete at 28 days of currring.M20 mix ratio is 1: 1.5: 3 contains 6.90 bags of cementOn Saturday, 10 May 2014 12:08 PM, "dhanush durai dhanushkodidurai@... [engineeringcivil]" <engineeringcivil@yahoogroups.com> wrote:M20 mix ratio is 1: 1.5: 3 contains 8.64 bags of cementFrom: ROMAAN Mehboob <romaanmehboob@...>
To: engineeringcivil@yahoogroups.com
Sent: Thursday, May 1, 2014 8:58 PM
Subject: Re: [engineeringcivil] SOP IN CONSTRUCTION INDUSTRYM20 is Grade of Concrete Means Mix ratio 20 is related strenth... M20 = 1:2:4 mix ratio. 1cum of M20 contains 6.22 bags of cement.On Thursday, April 17, 2014 11:27 PM, Safer Khan <engr_safer50@...> wrote:what is mean by M20 anyone can explain meWITH VERY SMALL PROJECT OF 50 TO 100 RESIDENTILA FLATS WANTS TO IMPLEMENTS SOP AND BENCHMARK THE QUALITY.PL FWD THE SOP STANDARD OPERATING PROCEDURE / STD PRACTICES APPLICABLE IN THIS REGARDSBR\\ CEO\\ SBSanins Infra Solution
Chander Bhal Rai
Head Of Civil Engineering Department
S.C.E.R.T BBK.
+919473634316