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Re: Procedure for pillar construction.
Posted: March 19th, 2014, 1:10 pm
by ramki067
baruc2003 wrote:Hi Ramki,
Yes, you can use 53 grade for pillars and beams. But you can use ppc as well.In olden days only ppc was available for construction and buildings are still leak proof and strong. For plastering you should use ppc strictly. Make sure you use m20 minimum for pillars and beams. Usually m25 is specified. You can use the cement :sand:jelly mix ratio told in this forum for m20 and m25.
Thanks,
Bharath
Thanks Bharath. Any recommendations of good m20 and m25 manufacturers?
Regards,
Ramki
Re: Procedure for pillar construction.
Posted: March 19th, 2014, 3:10 pm
by baruc2003
Hi Ramki,
M20 or M25 is the mixture you do at your place or the one you order from readymix RMC guys. You can call rmc people from justdial and order required quantity in metre cubes.
Thanks,
Bharath
Re: Procedure for pillar construction.
Posted: March 21st, 2014, 1:07 am
by Nivas
PCC = Plain Cement Concrete , RCC = Reinforced Cement Concrete
Pedestal : Intermediate component(looks like a column) which is wider and bigger than column, this component is optional and can reduce the footing thickness.( Again dictated by Design)
The concrete grade for Footing, Pedestal , Column will be given by the structural engineer , I forgot to mention a very important design input (should have been the first step), SBC Soil Bearing capacity which is given out by a soil test.
What is Plinth beam foundation?
Plinth = Pillar Base level or House base level ,Plinth beam connects the columns and is nothing but a ground level beam.It is very necessary to give the structure "some level" stability against earthquake. Again Plinth beam is not necessarily designed to take loads of ground level heavy walls , it requires foundation which I am referring to as "plinth beam foundation" , cases in which walls are constructed on the plinth beam , you need "plinth foundation" to support walls.
I have used RMC only for all works ( foundation,column,lintel,slab) as recommended , In small portion of the column we tried casting with manual mix with best sand,cement,water in precise proportion only to see that it yielded 5 to 6 MPa less strength and I could see that RMC with GGBS(Ground Blast furnace slag) yielded 5 to 6 MPa more after designated curing period. Column strength measured with Schmidt hammer.
Re: Procedure for pillar construction.
Posted: March 21st, 2014, 3:57 pm
by ramki067
Nivas wrote:PCC = Plain Cement Concrete , RCC = Reinforced Cement Concrete
Pedestal : Intermediate component(looks like a column) which is wider and bigger than column, this component is optional and can reduce the footing thickness.( Again dictated by Design)
The concrete grade for Footing, Pedestal , Column will be given by the structural engineer , I forgot to mention a very important design input (should have been the first step), SBC Soil Bearing capacity which is given out by a soil test.
What is Plinth beam foundation?
Plinth = Pillar Base level or House base level ,Plinth beam connects the columns and is nothing but a ground level beam.It is very necessary to give the structure "some level" stability against earthquake. Again Plinth beam is not necessarily designed to take loads of ground level heavy walls , it requires foundation which I am referring to as "plinth beam foundation" , cases in which walls are constructed on the plinth beam , you need "plinth foundation" to support walls.
I have used RMC only for all works ( foundation,column,lintel,slab) as recommended , In small portion of the column we tried casting with manual mix with best sand,cement,water in precise proportion only to see that it yielded 5 to 6 MPa less strength and I could see that RMC with GGBS(Ground Blast furnace slag) yielded 5 to 6 MPa more after designated curing period. Column strength measured with Schmidt hammer.
Thanks Nivas for this detailed explanation. But its confusing. If possible can you be able to draw a diagram indicating different names you mentioned?
Regards,
Ramki
Re: Procedure for pillar construction.
Posted: March 21st, 2014, 5:30 pm
by Ravi h.g.
Hi Ramki,
go through this website..
http://www.engineeringcivil.com/
regards,
ravindra kumar hg