GRP Water Tank Installation Guide – (9 Steps)

GRP Water Tank Installation Guide

Pre-Installation Preparation

1. Tools & Materials Required:

   • Electric wrench, drill, clamps, bolts/nuts (stainless steel recommended), sealing belts, angle iron, lacing bars, vertical support rods, ladder components, water level gauge, silicone sealant, leveling tools, safety gear (gloves, goggles, harness).

   • Ensure all GRP panels, flanges, and accessories are undamaged and match the provided GRP water tank installation drawings.

2. Safety Precautions:

   • Work on stable ground; use scaffolding/ladders for heights.

   • Wear protective gear to avoid cuts from sharp edges.

1. Foundation Preparation

Materials/Tools: Concrete mix, spirit/laser level, compaction tools, curing materials, welding equipment, protective gear.

• 1.1 Cement Foundation

  • Site Inspection: Ensure the ground is stable and level. Remove debris and vegetation.

  • Pouring Foundation: Use reinforced concrete (minimum grade M20, 150mm thickness). Follow provided drawings for dimensions.

  • Curing: Allow 7 days for curing. Check for levelness (tolerance ±3mm/m²) using a spirit level.

• 1.2 C Channel Base Steel Installation

  • Positioning: Align galvanized C channels as per drawings, spaced per tank dimensions.

  • Welding: Weld channels to foundation anchors. Ensure verticality and horizontal alignment. Grind welds smooth and apply anti-corrosion paint.

2. Base/ Bottom Panel Assembly

Materials/Tools: Base panels, electric wrench, bolts/nuts (M10×40, grade 8.8), sealing belts.

• 2.1 Panel Layout

  • Lay panels on a flat surface, referencing numbering/sequence from drawings.

  • Insert sealing belts (EPDM) between joints to ensure watertightness.

• 2.2 Bolting

  • Fasten panels using bolts/nuts with an electric wrench (torque: 30–35 Nm). Avoid overtightening to prevent panel warping.

• 2.3 Placement on C Channels

  • Lift assembled base using soft slings to avoid scratches. Align edges with C channels.

3. Side Panel Installation 

Materials/Tools: Side panels, sealing belts, rubber mallets.

• 3.1 Preparation

  • Attach sealing belts to panel edges. Position auxiliary angle iron vertically at corners for alignment.

• 3.2 Assembly

  • Bolt side panels to base (M10×50 bolts). Use rubber mallets to adjust alignment. Ensure gaps ≤2mm.

  • Tighten bolts diagonally to distribute pressure evenly.

4. Water Stoppage Angle Iron Installation

Materials/Tools:  silicone sealant.

• 4.1 Placement

  • Install angle irons vertically at internal/external corners. seal joints with silicone.

  • Refer to drawings for exact positions (typically every 1–1.5m).

5. Structural Reinforcement Lacing Bar

Materials/Tools: Lacing bars, vertical steel rods , torque wrench.

• 5.1 Lacing Bars

  • Install horizontal lacing bars at mid-height and top. Bolt connections (torque: 25 Nm) to prevent lateral movement.

• 5.2 Vertical Supports

  • Attach rods diagonally from base to top corners. Ensure tension is even using turnbuckles.

6. Cover Panel Installation

Materials/Tools: Cover panels, EPDM gaskets.

• 6.1 Placement

  • Lay panels over the tank,  Use gaskets between panels.

• 6.2 Fastening

  • Secure with M10×40 bolts (torque: 20–25 Nm). Trim excess gasket material.

7. Flange Installation

Materials/Tools: Flanges (DN50–DN200, size according to customer order request), hole saw, deburring tool.

• 7.1 Marking & Drilling

  • Mark positions per piping layout. Drill holes 2mm larger than flange OD. Deburr edges.

• 7.2 Mounting

  • Attach flanges with M10×50 bolts and seal with silicone. Ensure flange faces are parallel to pipes.

8. Ladder Installation

Materials/Tools: Steel ladders, ladder-clamps.

• 8.1 Mounting

  • For tanks >1m height, install internal/external ladders. Secure with clamps every 1.5m. Test stability (max deflection: 10mm under 150kg load).

9. Water Level Gauge

Materials/Tools: Float-type gauge, Glass tubing.

• 9.1 Installation

  • Mount gauge vertically on the side panel. Connect tubing to tank outlet. Calibrate per manufacturer instructions.

Post-Installation Checks

• Leak Test: Fill tank gradually. Inspect joints for 24 hours.

• Final Inspection: Verify bolt tightness, structural alignment, and safety features.

Safety Precautions

• Use PPE (gloves, helmets, harnesses).

• Follow local building codes and manufacturer guidelines.

Tools Checklist

• Electric wrench, torque wrench, spirit level, welding machine, hole saw.

This guide ensures a durable, leak-free GRP water tank. Always consult engineering drawings for project-specific details.