User Manual & Documentation | PondLinerCalc.com

1. Getting Started: Quick Start & Scale Reference

Welcome to PondLinerCalc.com. Here is how you can rapidly begin designing your custom pond.

Step 1: Establishing Site Scale

Before designing your pond outline, the calculation engine needs to establish real-world dimensions:

Draw a Reference Line: Click and drag your cursor across the design canvas to trace an object of known length (such as a garden fence, patio paving slab, or target pond length).
Enter Dimension & Units: In the left tool panel, enter your exact measurement length (e.g., 5.0) and choose whether you are designing in Metric (Meters / Liters) or Imperial (Feet / US Gallons).

Step 2: Drawing the Pond Perimeter Shell

After calibrating your scale, click anywhere on the canvas to place nodes tracing your desired outer top-down pond boundary shape. To complete and solidify the 2D basin shape, simply click directly back onto your initial orange starting node!

Step 3: Adjusting Custom Depth & Height Attributes

In the Left Panel, customize your structural design parameters at any time without losing your shape coordinates:

Maximum Depth: The vertical depth from normal water level to the lowest basin floor zone.
Average Depth: Adjusts the volumetric mean slope representing sloped grading between terraces and deeper excavation pools.
Above Ground Wall Height: The height of any raised decorative retaining brickwork or stone collars built above grade.

2. 3D Step Terraces & Bathymetric Benches

Modern garden feature installations rely on staggered horizontal step shelves to display submerged bog plants, provide predator protection for livestock, and anchor decorative peripheral boulder edging.

How to Construct Step Shelves

Under the Left Panel controls, enter your intended shelf depth (e.g., 0.6 meters for shallow water lilies) and click "Draw New Terrace". Trace inside your main pond perimeter across the exact regions where the ledge will sit.

Why Don't Step Shelves Drastically Increase Liner Size?

A common intuitive assumption among builders is believing that carving a 0.6m wide shelf around the pond interior requires buying an extra 1.2m (2 × 0.6m) of overall liner dimensions. Mathematically, this is untrue:

Shelves reside inside the footprint: Because terraces are excavated inside the outer perimeter outline you drew on screen, their horizontal width is already accounted for in the overall top-down bounding sheet measurements!
No change in cross-section span: Replacing straight vertical drops with stepped horizontal benches simply breaks the vertical depth and horizontal span into staggered steps without stretching the outer sheet envelope.
Tuck & Pleat Buffer Allowance: Our engine automatically inserts an intelligent safety buffer of 0.20m (~8 inches) per distinct shelf level specifically to provide fold-and-tuck slack into 90-degree internal corner benches without membrane tension or bridging!

3. Liner Sheet Sizing & Cost Estimating

Important Engineering Disclaimer

All calculations generated by PondLinerCalc.com serve as professional geometric estimation guidelines. Actual required membrane sheet sizes may vary due to field excavation irregularities, sloped grading, stone collar anchors, or site-specific soil settling. We strongly recommend physically verifying all finished excavations using a flexible measuring tape or rope run along the deepest contours before purchasing, ordering, or cutting custom liner sheets.

Core Mathematical Sizing Formulas

Our sizing engine rounds displayed sheet dimensions directly to standard commercial ordering fractions (0.1 decimal resolution), ensuring perfect arithmetic consistency:

Liner Length = Bounding Length + 2×(Max Depth + Wall Height) + 2×(Overlap) + Shelf Allowance
Liner Width = Bounding Width + 2×(Max Depth + Wall Height) + 2×(Overlap) + Shelf Allowance
Total Sheet Area = Rounded Liner Length × Rounded Liner Width
Water Volume = Bathymetric Integrated Volume across 2D Polygon Shell

4. Filtration, Pump & UV Equipment Sizing

A successful feature requires balancing structural excavation with adequate mechanical and biological filtration hardware to maintain crystal clear water and healthy dissolved oxygen levels.

Water Capacity & Hydrostatic Weight Loading

Water Volume: Computed by integrating surface polygon area against your customized slope bathymetry.
Hydrostatic Weight Loading: Crucial for landscape contractors constructing retaining structures or roof garden water features. The engine outputs total weight in kilograms (1 Liter = 1 kg), transitioning automatically to Metric Tons (or US Tons for imperial designers) on installations of 1,000 L or greater.
Garden Hose Fill Duration: Estimates total time required to fill your completed pond using a standard residential tap (~20 L/min or ~5.28 US Gal/min flow rate).

2-Hour Turnover Pump Selection

To prevent toxic waste buildup and anaerobic zones, mechanical circulation pumps should turn over your entire pond water volume completely every 2 hours. Our suggested pump rate gives you the precise target flow rating needed for clear biological health.

5. Quotes & Cloud Save Exports

Rather than manually typing dimensional numbers into text messages, PondLinerCalc gives you professional collaborative tools.

Direct Permalink Sharing

Clicking "Export Project" packages your entire 3D drawing, shelf depths, fish viability sliders, and chosen unit settings into an ultra-short permanent cloud link (e.g., pondlinercalc.com/8f9b2c).

Collaborative Read-Only Review Mode

When a builder or quote estimator opens a customer's design link, the interface locks into a secure Read-Only Review Mode to safeguard calculated geometry from accidental cursor drags.