Construction management (CM) refers to the process of planning, coordinating, and overseeing construction projects from start to finish. It involves managing resources, time, costs, and quality to ensure that projects are completed successfully, meeting the client's expectations. Construction management is essential for large-scale projects such as residential complexes, commercial buildings, bridges, roads, and more. It plays a critical role in reducing risks and enhancing the overall efficiency and safety of a project.

ESTIMATING AND COSTING 1
SITE AND OFFICE PROCEDURES
ROLES OF AQ.S
Roles quantity surveyor during pre- construction period
1.Preliminary estimates of the project ie bills of approximate quantities.
2.Preparation of project period/ work programme
3.Gives initial cost advice
4.Preparation of tender documents
5. Advices on selection of most competitive bidders
6.Negotiates with contractors
During construction
1.Work re-measurements 
2.Valuation of variation
3.Cost control
4.Check on day work 
5.Preparation of payment certificates
6.He/she is much concerned in fluctuations and clai