Benkelman Beam Apparatus

Name: Benkelman Beam Apparatus
Brand: Sami Lab Tek
Price: 3000.0 INR
Availability: InStock

Price 3000.0 INR/ Unit

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MOQ : 1 Unit

Benkelman Beam Apparatus Specification

Operating Principle
Cantilever Beam Principle

Finish Type
Powder-coated corrosion resistant finish

Carrying Case
Provided for easy transport

Dial Gauge
Digital or Analog, 0.01 mm (least count)

Accessories Included
Carrying box, manual, extension arm

Beam Length
3.66 m (approx.)

Stand Assembly
Sturdy with adjustable base

Purpose
To measure the deflection of a pavement under moving wheel loads, to evaluate pavement strength.

Support Type
Double support with pivot point

Weight (Approx.)
14-18 kg

Conforming Standards
ASTM D 4694, IRC:81

Application
Highway engineering, road maintenance and survey

Beam Material
Mild Steel

Dial Gauge Mounting
Magnetic mounting for precise positioning

About Benkelman Beam Apparatus

Benkelman Beam Apparatus is a precision field testing equipment used to measure the rebound deflection of flexible pavements under moving wheel loads. It is widely used in highway engineering, road construction projects, and quality control laboratories to evaluate the structural capacity and performance of road surfaces.

The apparatus operates on a simple lever arm principle, where small pavement deflections are magnified and recorded using a dial gauge for accurate readings. It is placed between the wheels of a loaded vehicle, and the deflection is measured as the vehicle passes over the test point.

Key Features:

Lightweight aluminum construction for easy field use
Telescopic design for convenient transport and storage
High accuracy dial gauge (analog/digital options available)
Simple lever mechanism for magnified readings
Quick setup and easy operation
Supplied with carrying case and accessories
Suitable for on-site pavement evaluation

Technical Specifications:

Beam Length: Approx. 2.5 m
Fulcrum Ratio: 2:1 or 4:1
Dial Gauge: 0.01 mm 25 mm (typical)
Material: Aluminum alloy
Weight: Approx. 1516 kg
Measurement Type: Pavement deflection under load
Operation: Manual (field use)

Precision Measurements for Pavement Assessment

Utilizing the Benkelman Beam Apparatus allows engineers to accurately measure pavement deflection under load. This apparatus is essential for determining pavement strength and quality, aiding in informed maintenance strategies and design protocols. Its robust construction and reliable mechanical operation provide consistent and repeatable results, ensuring the safety and longevity of roadways.

Durable Construction With Enhanced Mobility

Built from mild steel and finished with a powder-coated, corrosion-resistant layer, the apparatus stands up to harsh field conditions. The lightweight design (14-18 kg) and a supplied carrying case ensure convenient transportation and setup at different sites, making it ideal for road survey professionals and maintenance crews.

FAQ's of Benkelman Beam Apparatus:

Q: How is the Benkelman Beam Apparatus used to evaluate pavement strength?

A: The apparatus measures the deflection of a pavement surface as a moving wheel load passes over it. By recording displacement with the dial gauge, it helps determine the pavement's response to load, allowing engineers to assess its structural integrity and strength.

Q: What benefits does the magnetic dial gauge mounting provide?

A: Magnetic mounting enables precise positioning and secure attachment of the dial gauge, whether digital or analog, ensuring accurate measurement of small deflections without gauge movement during testing.

Q: When should the Benkelman Beam Apparatus be deployed in road surveys?

A: It should be used during routine highway condition assessments, construction quality checks, and whenever evaluating pavement performance under traffic loads is necessary for maintenance or rehabilitation planning.

Q: Where is the Benkelman Beam Apparatus typically applied?

A: This apparatus is primarily utilized in highway engineering projects, road maintenance works, and pavement survey evaluations, both in laboratory settings and directly at field sites.

Q: What steps are involved in the measurement process with this apparatus?

A: First, the beam is set up with its double support and pivot on the pavement surface. The dial gauge is then positioned using the magnetic mount. As a vehicle wheel passes over the test point, the deflection is recorded by the gauge, following the cantilever beam principle.

Q: How does the powder-coated finish enhance the apparatus's durability?

A: The powder-coated, corrosion-resistant finish protects the mild steel components from rust and surface damage, extending the lifespan of the device and maintaining accuracy across multiple field uses.

Q: What accessories are included with the Benkelman Beam Apparatus?

A: Each unit comes with a practical carrying box, detailed operation manual, and extension arm for versatile testing setups, all aimed at making transport, storage, and set-up more convenient.

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