TOP 10 BASIC RULES OF COLUMN DESIGN — DON’T FORGET BASIC RULES OF COLUMN

elakki elakki
3 min readMay 12, 2020

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10 BASIC RULES OF COLUMN DESIGN

COLUMN DESIGN

Hello Friends…..,

welcome to civil Scholar Blog…..,

Today I will discuss the very important topic related with RCC column and the topic is never forget 10 basic rules for design of column.

Guys, if you can design of RCC column for one story for two story for three story or for any story.

So, it’s okay but before starting design of RCC column you should know this standard and basic rules of column.

What are the ten basic rules before starting design of RCC column so you

should know the basic rules so in this Article I will discuss ten basic rules.

Let’s start guys…..,

First one is you know guys, we have square columns specially and rectangular column. so, I will tell you guys choose square column.

Why choose square column so choose square column for AXIAL LOAD, when the compression load comes on the center of the columns which whose square column in this case, you can choose square column.

Nowadays, The second rule is choose a rectangular column in which case for

Eccentric Axial load. when the load comes on the eccentric point.

A eccentric point means without center okay, when the load comes on the any point but not at the center of the column.

The second basic point means this is length should be greater than width

of the column okay.

Where you can select square column and where you can select

rectangular column.

Rectangular column, when load not comes on the center of the column and square column when the load comes on the center okay. so this is

second basic rule.

Now there is the third rule of our RCC column is Spacing of ties this is standard okay, spacing of ties should be between 100 to 200 mm.

Fourth basic rule is diameter of longitudinal bar should be between 12 to 22 mm okay.

Fifth basic rule of design of column is concrete cover from the Center of steel to exterior point should be 25 mm are more.

More mean 25 to 40 mm you can keep this is the standard but specially 25 is okay.

But here this one not from the center it should be not less than 15 mm.

Sixth one use minimum M20 grade concrete in column and ratio is (1:1.5:3)

Here 1 is cement, 1.5 is sand, 3 is aggregate.

Seventh one is longitudinal bar should be bend Duck leg.

Eighth one is use 4 numbers steel bars square are rectangular column okay.

Use minimum four numbers of longitudinal bars and square OR rectangular column okay.

Ninth one is 16 times of the diameter of main.

Tenth basic rules is top and bottom area of column should be

same. its top and bottom should be area okay so the area should

be same.

These are the important basic rules for design of column which can help you during design of RCC columns so therefore guys you should not forget these basic rules…,

Thanks for read my Article…..,

Goodbye…!!

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