Work Area Protection SMART CUSHION INNOVATIONS SCI100GM, Руководство по проектированию и установке

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Concrete compressive strength shall be 4000 psi (28 MPa) at 28 days.
Foundation lengths may vary when using wide transitions.
Support Structure
SMART CUSHION
®
impact attenuators are self-supporting and do not require an additional support structure.
Location
The SMART CUSHION
®
impact attenuator’s location determines its position and transition requirements.
1. Approach Zone
– SMART CUSHION
®
impact attenuators should not be placed directly behind raised curbs that exceed
4 inches in height. The longitudinal and cross slopes in front of the device should not exceed 10:1 (horizontal: vertical).
2. Barrier Width
– SMART CUSHION
®
impact attenuators are 24 inch (610 mm) wide at the rear. Barriers
24 inch (610 mm) wide, or less, can be shielded without using a transition if there is no reverse direction traffic. Barriers
that are wider than 24 inch (610 mm) and/or have reverse direction traffic require a transition, available from
Work Area Protection Corp.
3. Barrier Height – SMART CUSHION
®
impact attenuators are approximately 33 3/8 inch (848 mm) high.
4. Barrier Shape
– SMART CUSHION
®
transitions allow for connection to many barrier shapes.
Transition Design
SMART CUSHION
®
impact attenuators can be attached to many different barrier shapes. The attenuators are designed for direct
attachment to 24 in wide barriers and Jersey/F-Shape barriers. The SMART CUSHION
®
side panels move rearward beyond
the end of the attenuator up to 30 inch (760 mm) upon impact. This area is known as the travel zone. SMART CUSHION
®
transitions provide this travel zone in front of wider barriers and obstacles.
See appendices for SMART CUSHION
®
transition drawings. Work Area Protection Corp. can design transitions for other frequently
used applications. Contact us for details.