FWD – HWD – SHWD

 

AASHTO R32-11

CAO Annexe 1 Vol.1

 
Déflection under static load

Ponctual measurement of the bearing capacity of the pavement (road or airport).

 

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Description

The SHWD/HWD/FWD is a device designed to determine the determination of pavement bearing capacity. It comprises is composed of a falling mass that generates a force surface of the pavement, via a rigid plate plate and a damping system, an impulse-type load and a damping system.
The deflections generated are measured using geophones under and around the plate.
The modular principle means there’s no need to invest to invest in new equipment if the requirements of existing requirements change. Upgrading FWD (Falling Weight Deflectometer) 7-150 kN to an HWD (Heavy Weight Deflectometer) 7-250kN or even an SHWD (Super
Heavy Weight Deflectometer) 7-350 kN is a simple operation that can be completed in a matter of days.
Upgrades can be carried out at the customer’s site. site. The customer can choose the number of geophones (from 10 to 18 or more if required).

Features

FWD HWD SHWD
Operation range temperature
-50 à +60°C
Shock resistance
Up to 50 g
Sample
Increased sampling speed
Real time and simultaneous sampling for all channels
Software platform
SQL
Data storage
Standard database
Storage of data in all data versions and other manufacturer’s data versions

Datasheet