14/11/2024
The first step to take when constructing a building is setting out. That we did yesterday under hot sun of about 33 degrees Celsius. Today we are Excavating.
Setting out means drawing out the plan on the ground before digging. There are different methods but the most common for residential buildings is the 3-4-5 profile method.
The tools you will need are pegs, nails, hammer, profile wood, shovel, measuring tape, ropes and the building plan.
Pegs are driven into the ground in order to hold the profile wood
The profile wood serves has a perimeter boundary where the ropes are ropes hooked and drawn.
The ropes are used to represent the wall lines.
The nails are placed on the profile wood to hold the ropes in place
The building plan is used for the layout information. Now at Rasrof integrated services Ltd Contractors we do it this way...
Step 1.
Determine the front right corner of the building
Make a visual assessment of where you want want to place the building. Measure the front right corner of the building to the front and side of the property line…roughly mark one of the corners of the building with a peg in the ground. measure the overall length and breadth of the building and place pegs at the corners.
At this point you don’t have to be so accurate it’s just a sketch outline to get your profile.
Step 2
Mark out the profile board on the front and right side
From rough outline, measure about 1.5 to 2 meters off the building front corner peg to the front and right side.
The profile wood helps to mark out the building lines and will be discarded when the setting out is done. Place the profile pegs on the four corners of the building. You have to measure a rectangle or square shape as required 2 meters wider than the sketch building outline on all sides and the corners will be the profile corner.
Step 3
Check the squareness of the profile board using 3,4,5 method
To get a 90 degree angle accurately measure 4m on the side and 3m on the other side of the
