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Through a single point file and creating groups for points and creating more than one surface through POINT groups and identifying the breakline and the necessity of using it in the program and calculating quantities for all surfaces combined together or each surface separately & 1. *The concept of calculating quantities:* Calculating quantities means estimating the quantities of materials used in a specific project, such as excavation, backfilling and construction layers. It helps in estimating costs, planning resources and monitoring project progress. 2. *Basic steps for calculating quantities:* Create a surface: Create a surface for the area whose quantities are to be calculated. Assign areas: Select the areas whose quantities you want to calculate (such as the excavation or backfill area). Use quantity tools: Choose the appropriate quantity tools to calculate quantities in the specified areas. 3. *Quantity calculation tools in Civil 3D:* *Grading Volume Tools:* Used to create a surface and adjust its height to calculate excavation and backfill quantities. *Volume Surface:* Creates a surface that compares two existing surfaces and displays excavation and backfill quantities. *Volume Dashboard:* Displays excavation and backfill quantities graphically and quickly. *Paste Surface:* Combines multiple surfaces and displays the result in 3D. 4. *Tips to improve quantity calculation performance:* Use tools accurately and efficiently. Update surfaces regularly to get accurate results. Keep backups of the project to avoid data loss. If you need more details or have any additional questions, feel free to ask! 😊¹² .... Just join the membership of this channel to benefit from the benefits: / @mohmmedgomaa-towwords