Structural Design for GRP Water Tank

I need a complete structural design for a cylindrical GRP underground water tank. Specifications: - Diameter: 3.0 m - Length: 12.7 m - Cover: 20 cm backfilling above tank - Support: Raft foundation below tank - Water table level: same as ground level Design Requirements: - Required GRP wall thickness - Raft foundation thickness below the tank - Consideration of loads and conditions: - Internal water load - External soil pressure - Groundwater pressure (water table at ground level) - Surcharge load and backfilling above tank Software: - Design model using ETABS Deliverables: - Design models - Calculation report (PDF) - Drawings/sections showing tank, raft, and reinforcement Standards: ACI or equivalent international standards compliance.

Project ID: 39719019