Installation guides, material comparisons, standards and price guidance from the SIGMA Geosynthetics team — to help you specify, compare and install the right geosynthetic for your project.
Guide How a landfill liner system works layer by layer: primary HDPE geomembrane, secondary GCL composite, geonet leachate collection and the cap. Single vs double liner design, and what a liner project costs.
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Guide HDPE drainage mat and anti-slip drainage matting explained: how the dimpled core moves standing water off a floor while the raised studs hold traction, and how to size dimple height and load rating for your site.
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Guide Geotube dewatering pumps slurry into a woven geotextile tube, lets the water filter out through the fabric, and leaves compacted solids behind. How it works, where it fits coastal protection, sludge and tailings jobs, and how to size the fabric.
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Comparison Geocell vs geogrid isn't a choice between better and worse — they reinforce ground two different ways. Geocell confines fill at the surface; geogrid reinforces buried soil in tension. Which one your job actually needs.
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Guide How a dimpled drainage membrane works, why the air gap matters more than the sheet itself, and how to spec it for basement walls, retaining wall back-drains and green roofs.
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Comparison GCL or HDPE geomembrane? Sodium bentonite self-heals under cover but can't stand exposed; HDPE is impermeable but won't seal a puncture. Where each earns its place, and why landfills spec both.
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Guide HDPE geomembrane service life runs from about 20 years exposed to well over 50 years buried under soil or water. What actually shortens it — UV, oxidation, chemical attack, stress cracking — and why resin and thickness matter more than the datasheet number.
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Guide How to weld HDPE geomembrane with hot-wedge and extrusion welders, then prove the seam: air-pressure test, vacuum box test, destructive peel and shear — and the defects that fail all four.
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Guide How to install a root barrier that actually stops roots: trench depth, HDPE panel thickness, joining panels without gaps, and backfill. Covers tree root barriers near foundations and bamboo rhizome barriers for full containment.
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Guide How to pick geotextile weight in GSM or oz/yd² for separation, filtration and drainage jobs — what the number actually tells you, when 4 oz is enough and when it isn't, and woven vs nonwoven for each use.
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Comparison Not every non woven geo fabric is made the same way. Needle punched, spunbond and thermally bonded nonwoven geotextiles use different fiber-bonding processes, and the process decides strength, flow rate and cost. Here's how to pick the right one.
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Guide What a DWC pipe actually is, the size range from 100mm to 1200mm, SN4 vs SN8 ring stiffness, where it's used on storm and sewer projects, and what drives the price per metre.
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Pricing How to size a pond liner from your pond's dimensions and depth, plus what actually drives pond liner cost — thickness, resin, area and welding. Formula and worked example included.
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Guide A practical guide to choosing a koi pond liner or fish pond liner: HDPE vs LLDPE vs EPDM, fish-safe plastics, UV resistance, and sizing your liner roll correctly.
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Guide Why hexagonal cells outperform square grids for gravel driveways and patios, how honeycomb geometry spreads load and drains water, and how to pick the right depth for cars vs. foot traffic.
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Comparison Gravel grid vs geocell, plain and honest: gravel grid for flat driveways and parking, geocell for slopes, soft subgrade and heavy traffic. What each one is built for, and how to pick.
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Guide How to plan a gravel grid installation for driveways, patios and paths: base prep, membrane, laying pattern, fill and compaction, with a comparison table.
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Guide How to line a pond the way it lasts: prepare the subgrade, lay a geotextile cushion, install and weld the liner, then anchor and plant the edge. A practical step-by-step for ponds that hold water for decades.
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Guide Why a French drain's perforated pipe gets wrapped in a nonwoven geotextile filter, when you still need gravel, when you don't, and how to install a French drain that doesn't silt up in two seasons.
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Guide How geocell (cellular confinement) stabilizes a soft road base, holds fill on a slope and turns a parking area into grass pavers — what it does, where it fails, and the install details that decide it.
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Standards How a geotextile spec ties tensile strength, CBR puncture, sampling and acceptance to ASTM and GRI test methods — and how to read a test report so the delivered fabric actually matches the spec.
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Guide How to install an HDPE pond liner for shrimp and fish ponds, and what drives the price — thickness (down to 500 micron), pond area, welding and accessories — so you can budget and quote it right.
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Standards The international standards behind a road-embankment geotextile spec — ASTM D4595 wide-width tensile, ASTM D4833 puncture, GRI test methods and the IS codes used in India — what each one fixes and how acceptance works.
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Pricing HDPE geomembrane price scales almost linearly with thickness — 0.5 mm to 2.0 mm. What else moves the HDPE liner price (virgin vs recycled resin, width, textured), and how to compare quotes in India per m².
Read guide Guide Field guide to wick drain installation over a geotextile blanket for soft-ground treatment — why you lay the geotextile first, the install sequence, drain spacing, and what to check at acceptance.
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Pricing Geotextile fabric price tracks two things: GSM (weight) and strength class (kN/m or TS). How to read a geotextile price in India per m², and how to compare woven vs non-woven quotes like for like.
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Guide How to lay geotextile fabric for road construction and drainage: subgrade prep, overlaps, seams, anchoring and backfill — with the points contractors call out on the construction drawing.
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Guide Vacuum preloading uses suction through wick drains instead of a heavy surcharge embankment. How the sealed system is built, where it beats surcharge, and when to combine the two.
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Guide PVD, sand piles, bamboo piles or vacuum consolidation — which soft ground improvement method fits your depth, schedule and budget, and where each one stops working.
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Guide Wick drains (PVD) cut soft-clay settlement that would take years down to months. The drainage principle, the install sequence, drain spacing and the design numbers that actually matter.
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Comparison HDPE vs PVC geomembrane for ponds and containment: chemical resistance, UV life, flexibility and cost compared — plus where EPDM fits — so you pick the liner that survives your exposure.
Read guide Comparison Geomembrane vs geotextile comes down to one thing: a geotextile is permeable and filters or reinforces soil; a geomembrane is impermeable and stops water. When you need each, and when you need both.
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Comparison Woven vs non-woven geotextile fabric solve opposite problems: woven reinforces and separates, non-woven filters and drains. Compare strength, permeability and the geotextile types/classes so you spec the right one.
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Guide Pick HDPE geomembrane thickness by the job: 0.5 mm for small ponds, 1.0 mm for reservoirs, 1.5 mm for landfill and containment. What the subgrade and design life really dictate.
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