Before starting the construction of the building it is necessary to do the site clearance and cut out all the trees and levelled the ground.
The Marking of the foundation should be done on the site as per the plan.
Then the excavation work should be carried out for the construction of the foundation.
Dig the holes for the installation of the supporting posts. Ensure that the posts should be in the vertical direction.
After installing the post holes into the ground, it should fix with concrete so that it cannot move from its position.
In the lean to roof structure, the upper side of the rafters are rested on the wooden plate which is placed on the corbel.
A corbel is basically a projection that comes out of the wall in order to support the structure which is resting on it. The corbel is a weight carrying member which is generally made up of stone or wood.
The lower ends of the rafters are nailed and notched. The rafters in the lean-to roof are rested at an angle of 30 degrees at a wall.
Notch the upper side of the post holes so that the rafter can be easily fitted or rest on it. After that set the nailery on posts.
Fasten the nailery on the wall which has a higher length so that there you can attach the upper end of the rafter.
The rafters should be properly attached and fixed to the wall. Then mark out the spacing of the rafter on the mailers.
Determine the slope of the roof by stringing a line from the top side of the rafter towards the bottom side of the rafter.
Attach all the rafters and fixed it properly. Then cover the roof by using suitable roofing material as per your requirement.
There are various types of roof covers are used in the construction of the Lean-to roof such as A.C sheets or pre-coated sheets and Mangalore tiles etc.