Column Detailing

8/2/2019 Column Detailing

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COLUMN DETAILING

This chapter provides a step-by-step tutorial for the design

and detailing of columns in one floor of a multi-storied building

1.1 Description of the problem

1.2 Steps involved in Staad

1.3 Steps involved in aadspro

1.3.1 Column Schedule

1.3.1. a) Result

1.3.2 Column Detailing

1.3.2. a) Result


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1.1Description of the problem

The structure for this problem is a double storied building; in which the ground floor column is

to be designed (fig .1.1.1). A Staad file COLUMN exists for this problem.

Fig.1.1.1

1.2 Steps involved in Staad


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The following two is required for the design of column in aadspro,

a) Staad outputs (.anl)

b) Staad database (.mdb)

a) Staad output file

In Staad, open the file COLUMN.

EnterTRACKand DESIGN COLUMN commands for the selected columns to create an .Anl file.

Go to Post Processing Mode .

b) Creating Staad Database

In Staad, open the file COLUMN.

Select Tools>Advanced Query for Staad.pro version 2004 & lower (fig.1.2.1) or Select

Tools>SQL Query>Advanced Query for Staad.pro version 2006 & higher (fig.1.2.2).

Fig .1.2.1


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Fig .1.2.2


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1.3 Steps involved in aadspro

Open aadspro. (AutoCAD will be open automatically)

Select Column from main menu and Column Detailing from drop down menu.

Select the model type as Staad Pro(fig1.3.1)

Fig 1.3.1

Select Exclude for excluding foundation column (ie.pile or footing) (fig1.3.2)

Fig 1.3.2

Select if staad proversion is above 2004.

Select to import staad database. Select the database COLUMN(fig1.3.3)

Fig 1.3.3

Import Anl file by selecting again. Select the Anl file COLUMN(fig 1.3.4)


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Fig 1.3.4

Load Cases plate will be appeared after importing both Database and Anl file (fig

1.3.5).Select the load cases for the design of column. close this plate.

Fig 1.3.5

Column Detailing consists of nine plates, viz. Column Data, Output, Column Design,

Design Missing Column, Column Summary, Column Groups, Broken Column, Bardia,

and BBS.


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Design missing columns are shown in Design Missing Column plate. Program

assumes values for bar diameter, number of bar, cover, diameter of tie bar, tie spacing

etc. or user can type a new value (fig 1.3.6).

Fig 1.3.6

Select for updating the data. Details of design missing columns are

transferred to Column Design plate.

All the staad inputs will be automatically transferred to Column Data plate which

includes member incidences, joint coordinates (fig 1.3.7).

Fig 1.3.7

All the Staad outputs will be automatically transferred to the Output plate which

includes node, axial force (Fx), Moment in Y and Z direction (My & Mz) (fig.1.3.8).


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Fig 1.3.8

All the design details are automatically transferred to Column Design plate (fig.1.3.9).

Fig 1.3.9

Column nodes, size of column, Diameter of bar, number of bars, height of column etc.

are transferred to Column Summary plate (fig.1.3.10).


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Fig 1.3.10

Message box will be shown if broken column is there and program automatically joins

the broken columns.

Broken column details such as column name, start node, end node and details of joined

column such as column name, start node, end node etc. are shown in Broken Column

plate.

Diameter of bar used in each story and column number corresponds to each storey is

shown in Bardia plate (fig.1.3.11). User can change the diameter of bar used in each

story by typing a new value and enter to update the data. While updating this bar

dia will automatically come on Pile Design plate.

Fig 1.3.11


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Select to get Options-Column plate (fig 1.3.12). In this plate tick

and choose either for designing all

columns using aadspro or for designing columnshaving no design in staad using aadspro.

In Options-Column plate select reinforcement details such as starting and ending

number of reinforcement, minimum percentage of steel, diameter of bar etc. If this bar

dia or number of reinforcement is not sufficient for the design, message box will be

shown. Then increase bar dia or number of reinforcement.

Enter level of column to be designed either by selecting or in

the Options-Column plate. If ground floor column is to be designed

select and enter storey from 1 to 1.

Fig 1.3.12

Enter to start the column design.

To get the column design available in staad itself enter


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1.3.1 COLUMN SCHEDULE

Column Plus plate will be appeared after design is completed. (Fig 1.3.13).

Fig 1.3.13

In Column Plus plate,

o to draw layout of structure in AutoCAD.

o to draw beams connecting the columns in the

layout.

o Select and enter to groupthe columns (fig 1.3.14).

o Select the story corresponds to the required level of column detail E.g. if

ground floor column is to be drawn select story from 1 to 1.

o Saved excel file can be imported using

o draws the column schedule in AutoCAD.


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Fig 1.3.14

1.3.1. a) RESULT

Pick a point as per the AutoCAD Command.

Column schedule (fig 1.3.15) and Column layout (fig 1.3.16). is obtained.

Percentage of reinforcement is shown on the right side of column schedule.

630,631,634 etc. are representing column number.

Fig 1.3.15


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Fig 1.3.16

1.3.2 COLUMN DETAILING

In Column Detailing plate,

Enter characteristic values of concrete and steel, i.e. fck= 30Mpa and fy = 415 Mpa.

Enter L Bend Length (L shaped bend at the bottom point of column) and cover.

Select beam depth ie. the depth of beam at column intersection.

o program takes minimum depth of beam at the intersection.

o program takes maximum depth of beam at the intersection.

o user can enter a new depth by selecting this, say 400.

to draw column detailing along width side.


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to draw column detailing along depth side.

to get layout of structure.

to get cross section of column.

Enter for bar bending schedule. User can enter Starting Bar No as per

requirement. Default starting number is 100.

If we select merge sides, width side and depth side detailing starts simultaneously.

Otherwise depth wise detailing starts after completing width wise detailing only.

Enter for grouping columns.

Enter to get beams connecting columns in the layout of structure.

scaling factor in which column section is to be drawn.

Enter for lapping reinforcement as per IS Code. Economy means lapping

take place after completing its unsupported bar length.

Left alignment means flush the columns along the left side. Right means flush along

right side. Center means column center will be same.

In Column groups plate mark the group to be drawn in AutoCAD.

Enter to draw column detailing in AutoCAD.

BBS plate gives the Bar bending schedule for the problem.

option saves the schedule to Excel.

1.3.1. a) RESULT

Pick a point as per the AutoCAD Command.

Column Detailing (fig 1.3.17) and Column layout (fig 1.3.18) is obtained.

Column height is shown on the left side of column detailing.

641,706,637,703 etc. are representing column number.

100, 103, 104 etc. represents bar bending number.


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Fig 1.3.17


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Fig 1.3.18

Column Detailing

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