Finally, construction managers should strive to prevent unnecessary changes that can cause project delays and waste resources. To do this, they should involve the client and other key stakeholders in the planning and design phases, and solicit their feedback and approval before proceeding to the execution phase. Additionally, thorough site investigations and surveys should be conducted to identify any potential site conditions or constraints that may affect the project scope or quality. Quality checks and inspections should be performed regularly, and training and supervision should be provided to the project staff, subcontractors, and suppliers to ensure that they follow the project procedures and guidelines. Moreover, construction managers should anticipate and plan for possible changes that may result from external factors, such as weather, regulations, market conditions, or emergencies. By taking these steps, construction managers can reduce the frequency and magnitude of change orders, thus avoiding project delays and cost overruns.