Construction Process and Key Technical Points of Drainage Board Installation

1. Construction Preparation

• Material Inspection: Verify drainage board specifications (drainage capacity, compressive strength, durability) and prepare ancillary materials (e.g., geotextiles).

• Equipment Setup: Deploy bulldozers, excavators, and specialized drainage board insertion machines.

• Site Clearing: Remove vegetation/debris; grade the site to ensure a minimum 2% slope for drainage.

2. Survey & Marking

• Use total stations or theodolites to mark installation lines and spacing points with stakes/lime.

3. Drainage Board Installation

Installation Methods:

• Vertical Insertion (for soft ground improvement):

• Penetrate soft soil layers to reach firm strata using depth-controlled insertion machines.

• Horizontal Laying (for roofs/underground garages):

• Secure boards to substrates with cement nails or plastic anchors.

Key Controls:

• Insertion Depth: Must meet design requirements (typically penetrating soft soil into stable layers).

• Connections:

• Overlap (≥200mm) with adhesive or welding (leak-proof seams verified by testing).

• Anchor vertical boards at tops to prevent pull-out.

4. Geotextile Covering

• Lay geotextiles (≥100mm overlaps) over boards to filter debris and protect drainage channels. Ensure wrinkle-free placement with stitched/bonded seams.

5. Backfilling & Finishing

• Backfill: Use clean soil in ≤300mm compacted layers to avoid damage.

• Surface Treatment: Grade and compact for final topography; add landscaping if required.

6. Quality Assurance

• Material QC: Test drainage boards (permeability, strength) and geotextiles (tensile, permeability) per batch.

• Process Control: Monitor spacing, insertion depth, and seam integrity. Ensure machine operation maintains verticality.

• Post-Installation Tests:

• Sample inspections for installation quality.

• Assess effectiveness via settlement monitoring and pore water pressure measurements.

Title: "Drainage Board Installation: Procedures, Technical Standards, and Quality Control Measures"

Core Requirements:
✔ Precision Placement – Vertical/horizontal alignment per design.
✔ Robust Connections – Welded/overlapped seams to ensure continuity.
✔ Layered Protection – Geotextile + backfill for system longevity.
✔ Performance Validation – Testing pre- and post-construction.

Applications: Soft ground consolidation, rooftop drainage, underground waterproofing.