Setting Out Of Buildings
Setting out is the transfer of information on the building drawings to the ground with degree of accuracy.
When the site clearance is completed the setting out of the work may commence.
It is compulsory to have a good knowledge of geometry in order to ensure accurate work without disabilities.
The first task in setting out a building is to establish a baseline from which the whole of the building can be set out.
The building position of this line must be marked on the site, so that it can be properly re-established at any given point in time.
The building line is frequently determined by the highway authority / officials, and in urban areas... It is often EIGHT METERS from the back of the public foot path. If other buildings have been erected at the area the building line can be determined from these existing buildings.
After the base line has been established, marked and checked properly , the main lines of the buildings can be set out, each corner being marked with stout peg. A check is then made of the setting out lines for right angles and correct lengths. The method of establishing of the right angle is what the setting out sets out to establish in addition to the correct length.
Now, we can't just do setting out without using one thing or the other? ; right so Tools and equipment are needed to perform a setting out activity.
SETTING OUT EQUIPMENTS
Measuring tape: Before setting out any work the tape should be carefully checked for utmost accuracy. Metallic line tapes tend to stretch after they have been in use for a very long time. The tape is used to mark the measurements on the profiles. It should be ensured that each measurement is taken from the extended ring at the end of the tape.
Profiles: When setting out a building, it is an advantage if the line can be secured so that they are well clear off the building line. The trenches can then be dug without interfering with the lines.
Timber profiles erected for this purpose comprise of pegs driven into the grounds and boards nailed across them. The lines can then be stretched above the ground level well clear of any obstruction and may easily be checked for accuracy.
Datum Pegs: Before starting the actual setting out of the building to be constructed, it is essential to establish a level on the site to which references pertaining to the levels of elements of work may be made in the course of executing work.
There are different variety of methods used in setting out....
METHODS OF SETTING OUT
1. Using 3,4,5 method
2. Using the builder's square method
3. Using the theodolite
Amongst these three different methods in setting out, i am going to explain the procedures of BUILDER'S SQUARE METHOD. So lets get started.
PROCEDURES IN SETTING OUT {Builder's Square}
1. Find the distance of the site building to the building line on working drawings.
2. Place a peg in the ground at corner A and hammer a nail into the top of the peg.
3. Repeat these steps to place a peg in the ground for corner B.
4. Tie the string between pegs A and B. Measure the distance between A and B. (check that the distance on the ground is the same on the drawing ) by measuring
5. Repeat these steps for corners C and D
6. Measure the diagonals A-D and B-C {the two diagonals should be equal}
7. Use the builder's square to check that the corners are at right angles.
So there you have it, please don't forget to share....
Archbaheez.blogspot.com
Also read Preliminary site activities
When the site clearance is completed the setting out of the work may commence.
It is compulsory to have a good knowledge of geometry in order to ensure accurate work without disabilities.
The first task in setting out a building is to establish a baseline from which the whole of the building can be set out.
The building position of this line must be marked on the site, so that it can be properly re-established at any given point in time.
The building line is frequently determined by the highway authority / officials, and in urban areas... It is often EIGHT METERS from the back of the public foot path. If other buildings have been erected at the area the building line can be determined from these existing buildings.
After the base line has been established, marked and checked properly , the main lines of the buildings can be set out, each corner being marked with stout peg. A check is then made of the setting out lines for right angles and correct lengths. The method of establishing of the right angle is what the setting out sets out to establish in addition to the correct length.
Now, we can't just do setting out without using one thing or the other? ; right so Tools and equipment are needed to perform a setting out activity.
SETTING OUT EQUIPMENTS
Measuring tape: Before setting out any work the tape should be carefully checked for utmost accuracy. Metallic line tapes tend to stretch after they have been in use for a very long time. The tape is used to mark the measurements on the profiles. It should be ensured that each measurement is taken from the extended ring at the end of the tape.
Profiles: When setting out a building, it is an advantage if the line can be secured so that they are well clear off the building line. The trenches can then be dug without interfering with the lines.
Timber profiles erected for this purpose comprise of pegs driven into the grounds and boards nailed across them. The lines can then be stretched above the ground level well clear of any obstruction and may easily be checked for accuracy.
Datum Pegs: Before starting the actual setting out of the building to be constructed, it is essential to establish a level on the site to which references pertaining to the levels of elements of work may be made in the course of executing work.
There are different variety of methods used in setting out....
METHODS OF SETTING OUT
1. Using 3,4,5 method
2. Using the builder's square method
3. Using the theodolite
Amongst these three different methods in setting out, i am going to explain the procedures of BUILDER'S SQUARE METHOD. So lets get started.
PROCEDURES IN SETTING OUT {Builder's Square}
1. Find the distance of the site building to the building line on working drawings.
2. Place a peg in the ground at corner A and hammer a nail into the top of the peg.
3. Repeat these steps to place a peg in the ground for corner B.
4. Tie the string between pegs A and B. Measure the distance between A and B. (check that the distance on the ground is the same on the drawing ) by measuring
5. Repeat these steps for corners C and D
6. Measure the diagonals A-D and B-C {the two diagonals should be equal}
7. Use the builder's square to check that the corners are at right angles.
So there you have it, please don't forget to share....
Archbaheez.blogspot.com
Also read Preliminary site activities
GOOD JOB 👍
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