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Falling Head Permeability Apparatus AZA 0876 - Soil Permeability Test
PERMEABILITY APPARATUS (FALLING HEAD PERMEABILITY) AZA0876
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SOIL PERMEABILITY 75 MM AZA0878
SOIL PERMEABILITY 75 MM AZA0878

UNIVERSAL PERMEABILITY AZA0877

The AZA0877 Universal Permeability Apparatus from Azalab is a versatile and precision-engineered laboratory system designed for the accurate determination of soil permeability (hydraulic conductivity) across a wide range of soil types. Its universal design allows laboratories to perform both Constant Head and Falling Head permeability tests using a single integrated apparatus, making it an essential instrument for comprehensive geotechnical soil analysis.

Determination of soil permeability is critical in civil and geotechnical engineering for the design and evaluation of foundations, earth dams, embankments, retaining structures, drainage systems, seepage control, groundwater flow, and liquefaction assessment. The AZA0877 delivers reliable, repeatable, and standard-compliant results for professional laboratory use.

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Description

Description

Key Capability – Dual Test Methods

Constant Head Permeability Test

  • Suitable for coarse-grained soils such as sands and gravels

  • Maintains a constant hydraulic head across the soil specimen

  • Measures discharged water volume over time

  • Permeability calculated using Darcy’s Law

Falling Head Permeability Test

  • Ideal for fine-grained soils such as silts and clays

  • Measures the rate of fall of water level in a standpipe

  • Highly sensitive for low-permeability soils

The availability of multiple standpipes with varying diameters enables accurate testing over a broad range of permeability values.

Salient Features

  • Universal apparatus for constant head and falling head tests

  • Suitable for coarse-grained and fine-grained soils

  • Accurate determination of coefficient of permeability

  • Multiple glass standpipes for wide permeability range

  • Robust and corrosion-resistant construction

  • Stable laboratory mounting

  • Easy assembly, operation, and maintenance

  • Designed in accordance with IS 2720 (Part XVII)

  • Proven Azalab quality and reliability

Applications

  • Laboratory soil permeability testing

  • Foundation and earthwork design

  • Drainage and seepage studies

  • Groundwater flow analysis

  • Academic teaching and research

  • Quality control in geotechnical investigations

Technical Specifications

Model Number: AZA0877
Apparatus Type: Universal Soil Permeability Apparatus
Test Methods: Constant Head and Falling Head

Permeameter Cell (Mould):

  • Accommodates standard soil specimens (typically up to 100 mm diameter)

Standpipe Panel:

  • Multiple glass standpipes of varying bore diameters
    (e.g., 6 mm, 10 mm, 20 mm, 25 mm, 40 mm, 50 mm, 60 mm, 70 mm, 75 mm)

Measuring Scale:

  • Graduated scale for precise water level readings

Drainage Plates / Porous Stones:

  • Top and bottom porous stones for controlled water flow

Tubing:

  • Flexible, leak-proof tubing for water connections

Base Assembly:

  • Rigid and stable base for secure mounting

Water Supply:

  • Requires external constant head water supply (typically supplied separately)

Material of Construction:

  • Durable, corrosion-resistant materials

Compliance:

  • IS 2720 (Part XVII)

  • Compatible with relevant international standards

Advantages

  • Single apparatus for all soil permeability ranges

  • High accuracy and repeatability

  • Reduced laboratory equipment redundancy

  • Long service life with minimal maintenance

  • Essential equipment for professional geotechnical laboratories

Frequently Asked Questions (FAQ)

Q1: What is the AZA0877 used for?
The AZA0877 is used to determine the coefficient of soil permeability (hydraulic conductivity) in laboratory conditions.

Q2: What soils can be tested with the AZA0877?
It is suitable for sands, gravels, silts, and clays, covering both high and low permeability soils.

Q3: When should Constant Head and Falling Head tests be used?
Constant Head is used for permeable soils (sands, gravels), while Falling Head is used for low-permeability soils (silts, clays).

Q4: Which standards does the AZA0877 comply with?
It complies with IS 2720 (Part XVII) for soil permeability testing.

Q5: What is supplied with the apparatus?
Permeameter mould, standpipe panel with multiple glass tubes, measuring scale, base assembly, and connecting tubing.

Additional information

Additional information

Model Number

AZA 0877
Apparatus Type

Universal Soil Permeability Apparatus (Constant Head & Falling Head)
Permeameter Cell (Mould) Diameter

Varies, typically accommodates samples up to 100mm diameter.
Tubing

Flexible tubing for water connections.
Base

Stable base for mounting the permeameter and standpipe panel.

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