Land surveying also known as (jaminmojani) is the process of establishing or reestablishing corners, lines, boundaries, and monuments of real property (land), based upon recorded documents, historical evidence, and present standards of practice. Though,it is not only relatable to only. Survey can be done for hills, tree plantation, roads, etc.

Blueprints are drawings that architects/civil engineers use to plan new buildings. While architects/civil engineers today use computers to create building drawings, originally, the printing process created white lines on blue paper. Create your own blueprint with architectural/civil parts to imagine your own building design.

Estimating is the technique of calculating or Computing the various quantities and the expected Expenditure to be incurred on a particular work or project. 

It is a method or tool by which we find out safe and economical specifications of a structure or a member of the structure sufficient to carry the load. In other words finding out cross-sectional dimension, grade of material, amount of reinforcement, etc. necessary to withstand the internal forces that we have got from structural analysis.