How To Prevent Errors During Setting Out Building Plan On Ground

9/23/2019 How to Prevent Errors During Setting Out Building Plan on Ground?
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How to Prevent Errors During Setting Out Bui

on Ground?
Setting out building plan on ground is one of the most significant steps in building construc
this stage would cause considerable problems, if it is not tackled immediately.
Errors During Setting Out Building Plan on Ground
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There are different types of errors that might be made when a structure is set out for examp
systematic errors and random errors.
These errors should be prevented and there are some measures to tackle these issues. These
discussed in the following sections.
Fig.1: Setting Out of Building Plan on Ground
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Fig.2: Setting Out Building Plan on Ground
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How to Prevent Errors During Setting Out of Building?
Following are the different types of control that should be carried out to prevent any errors
building plan on ground:
Good practice in office
On site control
Equipment and staff
Checks
Marking the ground
Use of grid offset
Good Practice in Office
To successfully set out the building, it is necessary to complete office works with great accur
should be the latest version and if there are any changes in the drawing, it should be checke
influences the work in the field or not.
It is required to examine and explore the quality of information, for example, the dimensio
and confirmed with structural dimensions to make sure that it is realistic.
It is recommended to conduct calculation by two independent individual since the person w

computation may follow procedures and does not notice errors.
If a program is used to do calculations and solving problems, the user should know the prog
information that the software does work. The user need to understand the results adequate
unacceptable errors could occur.
On site control of Setting Out Errors
It is required to check both primary baseline and bench marks to make sure that they are a
setting out might be used for excavation but such work with such quality cannot be accepte
which requires considerable accuracy.
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It is advised to continuously check concrete benchmark station since they can be damaged b
It should be guaranteed that correct stations are used during working and this can be done
observing stations or by taking measurements to the adjacent stations.
Equipment and Staff
After accurate calculations at office are finished and good control is obtained at constructio
crucial to use a suitable instrument and experienced staff to carry out the work and get the
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Fig:3: Equipment and Staff to Prevent Setting Out Errors
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Checks to Prevent Setting Out Errors
It is recommended to do cross checks to specify any errors that have been made. For examp
shape is set out, diagonals should be computed prior to the works to determine errors durin
Cross checks need to be used for completed works to examine their accuracy and find out e
exist.
It is advised to begin setting out from the major control lines and then proceed to other part
prevent accumulative errors.
It is recommended to establish secondary control points from the main control point instea
secondary control points to set a new one. This is because any error in one secondary contr
repeated for other points and might increase.
For example, one houses is set out, it is preferable to set each house from the main control p
another house since errors would cause considerable issues. In this case, there might not be
last house to be set.
Use of common sense at the end of the works is the last check that should not be avoided be
can be noticed and considerable cost could be saved.
Marking the Ground for Building Set Out
It is recommended to use mark setting out using proper means to make it easy to understan
would not serve any purpose if it cannot be understood by user.
The information provided on setting out should be adequate and the provision of too much
be avoided. It is advised to ask the person that will use the setting out and find out what he
It is possible to use marks and expiations along the lines and on the wall unless it is a finish
offsets, they should be sensible and proper dimensions shall be used such as 1000mm.
It may be required to explain the setting out by the individual who carried out the work for
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to use the setting out.
Use of Grid Offset
It is required to offset gridline from actual position to a new sight of line to keep the line of
possible. This offset is recommended to be adequately large to account for size of columns a
Errors in out of square taping would be insignificant if the offset is kept small to a practical
matter how offsets are established, it should not cause errors at construction site.
Regarding change in offsets, the variation should be obvious and clear such as a meter or h
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Fig.4: Gridline and Offset Line for Building Setting Out
Read More: How to Set Out a Building Plan on Ground with Procedure? (https://theconst
out-a-building-plan-on-ground/5897/)
About Madeh Izat Hamakareem

(https://theconstructor.org/author/madeh/
Madeh is a Structural Engineer who works as Assistant Lecturer in Koya University. He is the au
at theconstructor.org.
©2019 The Constructor - Civil Engineering Home
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9/23/2019 How to Prevent Errors During Setting Out Building Plan on Ground?

How to Prevent Errors During Setting Out Bui

Errors During Setting Out Building Plan on Ground

Fig.1: Setting Out of Building Plan on Ground

Get Noti cations

Good practice in office

Equipment and staff

Marking the ground

Use of grid offset

Good Practice in Office

It is recommended to conduct calculation by two independent individual since the person w

On site control of Setting Out Errors

Equipment and Staff

Get Noti cations

Marking the Ground for Building Set Out

Use of Grid Offset

About Madeh Izat Hamakareem

©2019 The Constructor - Civil Engineering Home

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