| Sun Apr 14, 2013 | Post #1 | Abhishek Garg (Builder & Engineer)
Join date: Apr 2013 | Hi: I believe the wall on ground floor that you are talking about is 4.5" thick. It would be dangerous to lay a simple 4"x4" beam without support of any roof slab and continue building upon the beam. Your question certainly lacks details. Without looking at the plans and your actual requirements, it is very difficult to comment upon the situation. | | |
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| Mon Apr 15, 2013 | Post #2 | S L Gupta (Civil Engg)
Join date: Mar 2008 | Dear Sck
It not necessary to lay beam on wall for first floor if walls is load bearing in structure. To write a line could not serve the purpose.When one is spending lacs of rupee for construction house but shrinks spending on proper planning, which shall prove costly latter on.I am in view that you should contact any civil engineer, architect of your town or city and get decision after visiting the site personally.
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| Tue Apr 16, 2013 | Post #3 | sck
Join date: Apr 2013 |  Post subject: construction of 1st floor
Dear Sir, All the walls are either 4.5 inch or 9 inch thick. Beams for 1st floor are being placed over the roof of ground floor and over the walls. But two beams are on roof but well supported by ground floor walls at a distance of 10 ft . Rest all are firmly on ground floor walls. I intend to use concrete mix of M 20 grade. regards, SCK Ghaziabad M : 9311850660 | | |
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| Thu Apr 18, 2013 | Post #4 | S L Gupta (Civil Engg)
Join date: Mar 2008 | Dear SCK
If You constructed ground floor wall load bearing than by giving load of beam on load bearing wall than it is OK. M 20 conc means 1;1.5;3 ratio.
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| Thu Apr 18, 2013 | Post #5 | sck
Join date: Apr 2013 | Post subject: Construction of 1st floor
Dear Sir, Thanks for reply. As per my information, M 20 means 1 (cement) : 1.5 (Badarpur) : 3 (Moti Rori). Beams are already laid and they are crossing each other at 90 degree and are also supported by load bearing walls at different intersections. Now I intend to build brick walls over the beams leaving spaces for walls and windows. I intend to go up to 9 ft in height for doing shuttering. What can be ideal dimensions for doors and windows and height for walls. Kindly suggest. regards, SCK | | |
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| Fri Apr 19, 2013 | Post #6 | S L Gupta (Civil Engg)
Join date: Mar 2008 | Dear SCK
The 9 feet height of wall is right. Door size for room 3'x7' and for toilet 2.5' x7'. Window size taken to be according to room width or 4'x4' etc.
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| Fri Apr 19, 2013 | Post #7 | sck
Join date: Apr 2013 | Post subject: Construction of 1st floor
Dear Sir, Thanks . regards, SCK | | |
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| Mon Apr 22, 2013 | Post #8 | sck
Join date: Apr 2013 | Post subject: Construction of 1st floor
Dear Sir, What is the standard size of shuttering steel plates for laying roofing. I intend to start shuttering at 9 ft height. 1. How many steel plates, Pallus and ballies are required for roof size of 1000 sq ft area. 2. What should be size of Jalli - rod mesh (7 inch or 8 inch) and thickness of TMT bars (12 mm or less) for roof of 1st floor regards, SCK | | |
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| Mon Apr 22, 2013 | Post #9 | S L Gupta (Civil Engg)
Join date: Mar 2008 | Dear SCK
The shuttering plates are of various size such as 2'x2' or 3'x1.5' or 2'x1.5' as per availability in your town or city. The mason will tell you about the materiel required.
The spacing of rod 6''x6'' 12 mm dia.
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| Mon Apr 22, 2013 | Post #10 | sck
Join date: Apr 2013 | Post subject: construction of 1st floor
Thankx and what should be the thickness of RCC roofing (4 inch or 5 inch). I intend to use M 15 or M 20 grade concrete mix. Does the grade of mix have got any relation with thickness of roofing | | |
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| Tue Apr 23, 2013 | Post #11 | S L Gupta (Civil Engg)
Join date: Mar 2008 | Dear SCK
Use cement concrete M20, it is safe against earthquake and keep thickness of slab 4.5'' to 5''.
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| Wed Apr 24, 2013 | Post #12 | sck
Join date: Apr 2013 | Post subject: construction of 1st floor
Thankx. I will use M20 grade concrete mix and will keep thickness of RCC as 4.5 inch only as 5 inch will add more load over the structure. I hope Jalli which u suggested as 6 ``x6`` of 12 mm dia TMT bars is a 2 dimensional thing having length and breadth only; if height of 6 `` is added, the whole thing will become beam like structure. I intend to place this Jalli in mid of RCC slab of 4.5 `` thickness before pouring M20 grade concrete mix. Is it okay. | | |
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| Wed Apr 24, 2013 | Post #13 | S L Gupta (Civil Engg)
Join date: Mar 2008 | Dear Sck
The thickness of slab, dia of MS Steel bar and spacing is depend upon the span of the slab, so I already suggest you to plan the construction so that will ultimately give benefit. If the span of slab is up to 10 feet than 4'' slab is sufficient according to design and steel bars of 10mm dia is sufficient. Now without proper plan of the house and design, one can not tell exact thing. In my view to place 12mm steel bars at 4.5 '' is wastage of steel.
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| Thu Apr 25, 2013 | Post #14 | sck
Join date: Apr 2013 | Post subject: construction of 1st floor
Total area of slab is approx 40`(length) x 30 ` (breadth) = 1200 sqft approx covering 2BHK. I can reduce size of TMT bar from 12`` to 10 ``,if desired keeping RCC thickness as 4.5 inch thick with M 20 grade mix | | |
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| Thu Apr 25, 2013 | Post #15 | sck
Join date: Apr 2013 | Post subject: construction of 1st floor
.Total area of slab is approx 40`(length) x 30 ` (breadth) = 1200 sqft approx covering 2BHK. I can reduce size of TMT bar from 12`` to 10 ``,if desired keeping RCC thickness as 4.5 inch thick with M 20 grade mix.Dimensions of 2 BHK are as follows:
Total area of slab in sqft
1 DR - 20
`x 13 ` = 260 sqft
1lobby - 14
`x 14` = 196 sqft
1 BR - 18`
x 13` = 244 sqft
1 BR- 10`
x 13`= 130 sqft
1 Kitchen 8` x 6` = 48
sqft
Balcony 20` x 3` = 60
sqft
938 sqft
The above dimensions will give u idea on spans. I hope now u can suggest the size of Jalli and thickness of TMT bars , thickness of slab etc regards SCK | | |
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| Fri Apr 26, 2013 | Post #16 | S L Gupta (Civil Engg)
Join date: Mar 2008 | Dear Sck
Use 12mm dia steel bar 6'' c/c and M20 slab 5'' thick.
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| Sat Apr 27, 2013 | Post #17 | SCK
Join date: Apr 2013 | Dear Sir, Thanks, but what is `c/c` in 6 inch. I understand, 12 mm TMT bars are to be placed lengthwise and breadth wise with spacing of 6 inch on both sides, so I will get a rod mesh (Jalli ) in Square shape. This rod mesh will be placed over shuttering for putting slab. I hope when u write steel bars, u mean TMT bars only. Could not respond to u earlier, due to log in problems and I have to create a fresh profile with same user id. regards, SCK | | |
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| Mon Apr 29, 2013 | Post #18 | S L Gupta (Civil Engg)
Join date: Mar 2008 | Dear Sck
Your assumption is right, do your work further., lay slab
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| Sat Oct 05, 2013 | Post #20 | SCK
Join date: Apr 2013 | Post subject: stairs
Is concrete mix of M 20 is good enough for laying slab of slope and platform for stairs when TMT bars used is 12mm in sides and Jaal of 6 x 6 is of 10 mm | | |
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Cement Concrete-Construction Questions (38) | |
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