Contents
Beam sizes for various floors of building | civil engineering | building design | beam sizes
Beam is a horizontal member which is perpendicular to gravitational force used to support the columns and to transfer the loading to plinth level and foundation. Depending upon the usage various beam cross sections like rectangular, square, circular, polygon, I section and T sections are used in building construction. Beam sizes for various floors will helps in the effective reinforcement results as per the standards.
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| Beam sizes for various floors |
Factors effecting the beam sizes for various floors
Beam sizes are also an important factor which is effects on the stability of structure. If we doesn’t use proper beam dimensions it will leads cracking effect in structure. There are many factors which are effects the beam sizes or dimensions, the following are the major factors we will consider in building design.
- Loading factor
- Grade of the concrete and grade of the steel
- Span of the beam
- Soil bearing capacity
1. Loading factor
Loading condition or loading factor is important aspect in building design, the cross section or dimensions of the beam depends upon the total load acting on that particular member. Basically loads are related to gravity loads and lateral loads, if the loading on the structure is high then we have to provide suitable dimensions of beams.
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| Beam reinforcement cross section |
2. Grade of the concrete and steel
The grades of the materials depend upon the sum of the total load which is transferred to building structure. If the high intensity of loading is obtained in building than it is also important to choose suitable grades. For example in case residential G+1 building we will consider M20 grade concrete and Fe415 grade steel.
3. Span of the beam
The span of the beam is the distance between starting point to ending point of the particular member it is also called as center to center distance between the column sections. If the span of the beam increases then we have to increase the depth of the beam and in the other hand width of the beam is also increases.
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| Span of the beam |
4. Soil bearing capacity
The soil bearing capacity values are depends upon the type of soil like loose soil, medium soil, hard soil. If the bearing capacity is less than it is not possible to provide higher dimensions of beams.
Beam sizes for various floors values in building design
The following table shows the beam dimensions for various floors. The dimensions are only my personal experience not accurate values. The values are depends upon the different building specifications and considerations.
Note: The below shown values are only for education purpose to clearly understanding the concepts not for site uses.
|
S. No |
Building model |
Beam sizes in inches |
Beam size in mm |
|
1 |
Ground |
9”X9” |
230X230 |
|
2 |
G+1 |
9”X12” |
230X300 |
|
3 |
G+2 |
12”X12” |
300X300 |
|
4 |
G+3 |
12”X12” |
300X300 |
|
5 |
G+4 |
12”X14” |
300X380 |
|
6 |
G+5 |
12”X18” |
300X450 |
|
7 |
G+6 |
14”X18” |
380X450 |
|
8 |
G+7 |
14”X18” |
380X450 |
|
9 |
G+8 |
18”X18” |
450X450 |
|
10 |
G+9 |
18”X21” |
450X530 |
|
11 |
G+10 |
21”X21” |
530X530 |
The complete concepts of beam sizes for various floors are explained on my YouTube channel Civil Engineering by Shravan please click here to watch.
Conclusions
Well now the above explained concepts are related to the various beam sizes for building structure from ground floor building to the G+10 building structure.
Please read out previous posts
Complete reinforcement details of G+1 building as per standards
Top 5 basic civil engineering must important softwares
Column sizes for various floors in building design
Depth and width of the beam as per the thumb rule
Basic 9 rules in column design as per standards
Please watch interesting concepts in my YouTube channel Civil engineering by shravan. Please feel free to text us at contact us page for any quarries.
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