QUASH Crash Cushion
The QUASH Crash Cushion System is a high performance non-redirective, gating crash cushion designed to shield the blunt end of the TALL42 movable concrete barrier. QUASH has been specifically designed for rapid deployment and ease of installation and does not require anchoring to the road foundation. The simple design of QUASH consists of a nose piece, absorption cells and an end transition for connection to the downstream TALL42 barrier, all linked together with connecting pins.
Product Features
MASH TL3 Compliant
Containment of a 2270 kg pickup truck travelling at 100 km/h.
Rapid Deployment
Freestanding unit does not require ground anchors.
Compatibility
Remains connected to TALL42 as it passes through the transfer machine.
Durable Design
No internal corrodible elements.
Product Gallery
Downloads
Product Manual
Product Data Sheet
Drawings
Related Products
TALL42 is a freestanding, movable concrete barrier system designed to be used with a transfer machine that can reposition the barrier, altering the traffic lane configuration.
Frequently Asked Questions
What is the QUASH Crash Cushion made of?
QUASH is manufactured from linear low-density polyethylene offering excellent impact resistance and high tensile strength. The internal areas of the cells are free from corrodible components.
How does the QUASH Crash Cushion work?
QUASH has been assessed as a non-redirective crash cushion. Non-redirective crash cushions are designed to safely accommodate most vehicles striking the front of the cushion but have no capability to redirect vehicles impacting near the rear of the device. The simple design of QUASH consists of a nose piece, absorption cells and an end transition to the downstream barrier, all linked together with steel connecting pins. The preassembled absorption cells are filled with water, reducing the severity of head-on impacts.
How does the QUASH Crash Cushion pass through the transfer machine?
The T-top shape of the absorption cells allows the QUASH Crash Cushion to be lifted when filled and gently set down by the transfer machine. The self-centring J-slot hinge ensures the QUASH remains correctly aligned with the TALL42 movable barrier system as it passes through the transfer machine.
Does the QUASH Crash Cushion require anchoring?
No, the QUASH Crash Cushion does not require ground anchoring.
What is the crash test compliance of the QUASH Crash Cushion?
QUASH has been fully crash tested and evaluated according to the specifications for Test Level 3 (TL3) of the AASHTO Manual for Assessing Safety Hardware (MASH).
Can the QUASH elements be transported when full?
Yes. The design of the QUASH absorption cells facilitates ease of handling and storage. The cells may be lifted and moved when empty or filled using appropriate lifting equipment. The cells feature dual lifting points located at the top of each element and at the side. If lifting using a forklift, the tines must fully engage the cells, particularly if the cells are filled to avoid damage.
What precautions should be observed when transporting QUASH absorption cells?
When the absorption cells are full, they should not be stacked on top of each other to avoid damage. If the cells are empty, they may be grouped together in bundles of up to four (4) to facilitate transportation and handling.
What pavement conditions are suitable for the installation of the QUASH crash cushion?
The QUASH crash cushion is a freestanding unit that is placed directly onto the ground surface. The ground surface must be firm and free from debris that may impede the safe function of the system. The longitudinal and cross slope of the ground surface must be less than 10 %.
What are the guidelines for water filling the QUASH crash cushion?
The first absorption cell must remain empty. All remaining absorption cells are filled with water to within 25 mm of the fill holes.
How much water is required to fill the QUASH system?
The QUASH system requires 2250 litres of water to be correctly installed.
