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rcc roof thickness and tmt bar size

Fri Nov 20, 2015Total posts : 5
Techman
Techman
Join date: Nov 2015
Topic: rcc roof thickness and tmt bar size

What is the recommended thickness of flat rcc roof for 1300sqft house with max. room size 13x14ft with load bearing walls? Is it ok using 8mm and 6mm tmt bars for whole work? Or should I use 10mm/12mm bars for invisible beams through the centre rcc roof of large rooms?


Fri Nov 20, 2015Post  #1
S L Gupta (Civil Engg)
S L Gupta (Civil Engg)

Join date: Mar 2008
Dear Tacman
       The thickness of slab and MS Steel arrangement is according to design based on span and loading condition. However in general the thickness of RCC slab should be 4.5'' thick.
MS Steel for slab for main bar should be 10mm and for distribution 8mm or 10 mm. For beam it should be 16mm and 12 mm as per span.
 
Mon Nov 23, 2015Post  #2
JAI PRAKASH
JAI PRAKASH

Join date: May 2014
The thickness has to be at least 4.5-5.0". 
Use 10/12 mm for lantel area and 16 mm for invisible beams.

 
Mon Dec 21, 2015Post  #3
Pooja
Pooja

Join date: Dec 2015
Sir,

What concrete ratio is needed in rcc lanter ?

Thanx
Pooja
 
Mon Dec 21, 2015Post  #4
S L Gupta (Civil Engg)
S L Gupta (Civil Engg)

Join date: Mar 2008
Dear pooja
   use cement concrete mix 1;1.5;3 in ALL RCC WORK. It is safer keeping in view earth quack safety.
 
Thu Dec 24, 2015Post  #5
JAI PRAKASH
JAI PRAKASH

Join date: May 2014
Correct Sir.

 

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