#### How to calculate the total loads on a column and corresponding footing?

This article has been written on the request from my readers. Engineering students generally get confused when it comes to calculating loads for column and footings design. The manual process is simple.

#### Types of loads on column

- Self weight of the column x Number of floors
- Self weight of beams per running meter
- Load of walls per running meter
- Total Load of slab (Dead load + Live load + Self weight)

The columns are also subjected to bending moments which have to be considered in the final design. The best way to design a good structure is to use advanced structural design software like ETABS or STAAD Pro. These tools are leagues ahead of manual methodology for structural design, and highly recommended.

In professional practice, there are some basic assumptions we use for structural loading calculations.

You can hire me for your structural design need. Contact me.

**For Columns**

Self weight of Concrete is around 2400 kg per cubic meter, which is equivalent to 240 kN. Self weight of Steel is around 8000 kg per cubic meter. Even if we assume a large column size of 230 mm x 600 mm with 1% steel and 3 meters standard height, the self weight of column is around 1000 kg per floor, which is equivalent to 10 kN. So, in my calculations, I assume self weight of column to be between **10 to 15 kN per floor.**

**For Beams**

Similar calculations as above. I assume each meter of beam has dimensions of 230 mm x 450 mm excluding slab thickness. So, the self weight can be around **2.5 kN** per running meter.

**For Walls**

Density of bricks varies between 1500 to 2000 kg per cubic meter. For a 6″ thick wall of 3 meter height and a length of 1 meter, we can calculate the load per running meter to be equal to 0.150 x 1 x 3 x 2000 = 900 kg which is equivalent to **9 kN/meter.** You can calculate load per running meter for any brick type using this technique.

For autoclaved, aerated concrete blocks like Aerocon or Siporex, the weight per cubic meter is between 550 to 700 kg per cubic meter. By using these blocks for construction, the wall loads per running meter can be as low as **4 kN/meter**, which can result in a significant reduction in the cost of construction.

**For Slab**

Assume the slab has a thickness of 125 mm. Now each square meter of slab would have a self weight of 0.125 x 1 x 2400 = 300 kg which is equivalent to 3 kN. Now, assume Finishing load to be 1 kN per meter and superimposed live load to be 2 kN per meter. So, we can calculate slab load to be around **6 to 7 kN per square meter.**

**Factor of Safety**

In the end, after calculating the entire load on a column, please do not forget to add in the factor of safety. For IS 456:2000, the **factor of safety is 1.5.**

want to learn about steel desighn for RCC slab,beam,foundation column etc

i want know the every items work facing in (in site) construction of building and irrigation projects

Sir,where can i get a total design material by using it I can design the building. Is there any such site on web please inform me,thanks

Well, you should check out the link below:

Building Design | RCC StructuresHi,

Thanks for the useful information. I am totally new to this field and I have a couple of queries,

1. How can I calculate the number of columns required for a building, say a building of two storeys of 2400 sq.ft?

2. The size of the columns, the column footings size, the steel used in the column etc are dependent on the load on the columns. So should I calculate the total load of the building and distribute the load equally on the number of columns?

Hello Suresh,

If you are planning to construct a building, I feel you should consult a qualified Structural engineer.

For your information, check out these articles. They might help you clear your basics:

Building Design Guide | Guide to RCC ConstructionHi

i am constructing my own house with 3 floors.

i would like to know, is there any spread sheet templates for load calculations (Eg Dead loads , earthquake and wind loads) in online or anywere.

i can purchase through online also, if available. if you know any reputed sources pls let me know.

regards

Pratheep

Am happy to see you guys, need to learn more from you…

thank you mam your information

Welcome Rizwan!

Do keep visiting.

Cheers 🙂

Mam i have done my diploma but i got some backlogs in dce(diploma in civil engg)

Hello Adnan,

Now we just hope that whatever doubts and difficulties you have had must be clear now. Do keep visiting the site because this site has been specially designing for Civil engineering and Architecture students.

Cheers 🙂

my question is simple how to decide number of columns for a given area of a bldg. what are the simple thumb rules……

Hi,

I am going for construction of my own house – residential building with stilt + Ground+ 2 to 3 floors. The contractor is suggesting some measurements of foundation columns.

Could you please let me know what are the measurements of columns in general for a building of above and the depth of the column should be.

Thanks & Regards

Balaji

Hello Balaji,

I suggest you should hire a qualified Civil engineer for the job and not take structural based decisions yourself. This site is meant for people who are Civil engineers, civil engineering students, architects and architecure students and of course for people who are interested in gaining knowledge about structures.

In no case is a layman allowed to take decisions regarding structural design. So please do consult a civil engineer and get the structural design. Every project is unique and needs designing accordingly.

Thank you.

Very Helpfull,

Thanks Million

Hi! Hemanth

Is their any norms on considering constants of various loads for independent residential building?

each span varies from 12′-0″ to 15′-0″

Thanks.

hello sir,

can you please tell me how can I calculate self load of colum or beam.

hey i want design the building in my life time

tell me what should i learn to become design Engineer atleast iwant to design one building in my lifetime provided should be safe

Hi,

I am a civil engineering student studying final year. Can I know in which field does a civil engineer work.

can you please add 1 detail example using formula’s of calculating all columns, beams, slabs Live & dead load, please

hi madam, im civil engg im doing analysis in stad pro,pls can u tell me 1 ex after analysis whats the procedure to do the design

pls tell formulas and tumb rules

tank u

major causes of cracks in building?.

how to start a foundation?

the caiculatoin of the total cash required?

Hello Fahad,

Causes of cracks in buildingsDear Madam

Can you explain generally the load calculation for ground floor in kg /m2 for column , beam,only. i donot want in kN/M2.

Thank you

christopher

Dear madam

can you explain me . the self weight of one coumn 9″x9″ for 13feet length that is from gl to roof level.

thank you

christopher

benzu,

i computed all the total load?how will it be distributed in order to determine the dimension of the footing?

m planning to build double storey house 17mx8m. Can u plis specify the number of coloumns to be erected and its sizes and also the beam sizes. Also the proper spacing of the coloumns. Bottom is open carport and level 1 is 2bedrooms,1m/bedrooms,kitchen,study rooms and small porch plus back porch as laundary areas.

thnx

I WANT A BOOK FOR RCC DESIGN.

design of concrete structure by arthur. H. nilson

WHAT CAN BE THE MAXIMUM SPAN OF CONTINOUS SLAB/BEAM STRUCTURE BETWEEN TWO SUPPORTS IN A FOUR STORYED STRUCTURE ,I ASSUME 7M BUT ARCHITECT SAYS 3 M

Well, that depends on the structural design. The steel design has to be appropriate. The span could go beyond 7m. It could be huge. 3m is the minimum distance between two supports.

Dear sir,i want to know how to design the structural members….that means by keeping one buliding plan how to design the structural members i knw how to design by using problems types..but using one building plan how to design entire structural members ….i want to know the procedure with example plz hel me sir…kindly i request u

Hello Ventakesh,

Here the

RCC Building Design GuideThis should answer all your questions. I recommend that you go through the guide thoroughly.

Cheers 🙂

what is the workflow of structural designing from begining to end. write somebody step by step

wht dimension of raft foundation may be suitable for a three storey security building having floor area.14ft*12ft, having soil bearing capacity 150n/mm2..using m20 comcrete?

dear madam can you help me with the formula of finding the depth of a foundation when given pressure as 23 ,weight of the soil as 423kg and the angle of repose 35degrees

My friends new house was constructed on soft soil.the houes is g+1.it is rcc framed structure with isolated footing .the columns are 300x300mm .there are 20 column and spacing is 3mtr.in the first floor rcc slab roof is provided.footing of size 1.7*1.7mtr and 1.8 mtr deep was provided. 8nos 16mm dia rod is provided in columns .now after seeing some site on foundation design she is worried whether it is safe or not. kindly reply

Don’t worry your building is enough strong to take load of 3 floor more

clear and concise information

Hello sir its my final exam and I have research project in vertical structure therefor kindly request from you give me information about kani method thanks.

Nice for everyone

sir

how we can to design a mini football stadium?

please help me

hii m an architecture 3rd year student frim Maharashtra Nagpur tell me how to do column calculation and the footting design for architectural design

Hi

I want to know how to calculate structural members load,

Which is below ground?

I want to know how to calculate design of pile foundation for barrage

I need the calculation of structural design

Thanks for help

Hi, is anybody here interested in online working?

It is simple survey filling. Even 10$ per survey (10 minutes duration).

If you are interested, send me email to hansorloski[@]gmail.com

Hi

I want to know how to calculate structural members load,

Which is below ground

Thanks

You will have to consider soil pressure exerted on the structural member. There is no shortcut thumb rule for that.

I want to know how to calculate for structural load members for a ground floor concrete

Check out http://civilprojectsonline.com/building-construction/calculation-of-loads-for-foundation-design-structural-design/

Hello,

My company wants to build a new sign. It will be constructed of concrete footing. The sign will be 8x8x16 filled concrete blocks. I need help with calculating the footing size. Can you help me?

Regards,

Leonard

Hi, I just want to find out what calculations I must do to know if the foundation I have designed for a building is strong enough to cary any extra load

Hi, thanks a lot for your information, now , how do i determine roof loads ( not slab type but of sheeting) that is transmitted to the columns? please help

for making a sign board, i have calculated wind pressure and load. For heavy wind i calculated moment at the top of foundation. Now i want to know what is the equation to calculate the uplifting force (KN) / pullout or tension applicable on the footing by converting the bending moment to uplift force.

Your conversion from Kg to kN is wrong. But calculation is fine.

how to calculate load calculation for any structural building (ex..PEB/ Structural Building)