Site Marking: The Basics of Construction Decoded

Before you start constructing your house, read these set of articles. Be knowledgeable and woke. Get trusted builders and contractors to guide you better, as constructing a house is no easy task.  We thought that you should take a look:


Lets Map it Out

Once the design of the foundation is ready and finalized, the foundation layout it prepared and the site marking begins. Though the process and procedure might differ depending on the scale of the project, these are the brief steps that are followed.


You Reap what you Soil

Based on soil conditions, the pillar placements are identified and the corners of the building are marked. 

Base point is fixed and a rod is hammered in. From that base point, the baseline is laid using thread. 

The centre line, perpendicular to the long wall, is marked by making a proper angle. A right angle is set by creating triangles with sides of 3, 4 and 5 units long. A steel tape is used to fix all the dimensions. The formula is used here as √(L2+B2). Accurate centre or axial lines can be determined and marked by using a theodolite, an instrument used for fixing acute or obtuse angles.

The Ace of Base

 For a simple building layout, like a rectangle, the outline of the building is marked by a thread line tied to corner posts – a rod hammered into the post can be used to attach the line to. A theodolite, site square or builder’s square is used to calculate and measure the 90-degree angles for the remaining corners. Ranging rods may also be required to establish a straight line between the corner posts.

Hot Rods

For the corner posts, usually 50 x 50 mm timber posts are driven firmly into the ground, with a nail in the centre of the post. The outline can be marked on the ground with dry lime or any similar powder. 

Required material on marking day:

  • Threads — to tie and connect the rods
  • Paint and brush — to mark the walls
  • Chalk powder or dry lime powder — to mark digging area
  • Steel rods — to tie threads usually around 2-3ft long

Proper marking of the foundation is very important to ensure that the foundation walls are of the same size and are in the right position to be able to bear the load of the wall. Mistakes in the foundation will cause cracks when the construction starts and movement happens. Also, mistakes in the marking are expensive and time consuming to correct. That’s why it’s vital to get the right people for the job. Housejoy has an expert team of engineers and architects who use the most current methods and technology to make sure every step is done perfectly and accurately – right from the measurement of the foundation to the completion of the project. 

Rating: 4.5/5. From 4 votes.
Please wait...
Follow Me:

Leave a Reply

Your email address will not be published. Required fields are marked *