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SoftStop
6.0 SoftStop® System Post Placement
Danger: Ensure all above & below ground
utilities are located, marked and identi ed
prior to using auger or post driving
equipment in accordance with local
specifying agency guidelines. Failure to
follow this warning could result in serious
injury or death.
6.1
Determine Post Locations
Place a level or straight edge on the face of downstream
guardrail (i.e. tra c side) to the nished grade to create a
reference line for face of guardrail. The reference line will
be used to determine post location for the last post of
the SoftStop®System.
The last post of the SoftStop® System will be located 272
mm from face of downstream guardrail to back of the
last post of the SoftStop® System to accommodate an
190mm o set block and be spaced 1905 mm (typical)
on center from the rst post of the W-beam system (see
drawing below). Refer to the post placement diagrams in
this manual for remaining post locations.
Figure 6: Post locations
Release 06/19
® Tangent End Terminal
The SoftStop® System posts may be inserted into the soil
using an auger or impact hammer pile driver used for the
placement of guardrail posts. If an auger is used, ensure
diameter is large enough to allow for proper compaction
of agency approved ll material. All SoftStop® System
posts are to be assembled plumb. Proper compaction
must be accomplished for all posts in accordance with
state/specifying agency guidelines.
If rock is encountered at post locations 2-8, refer to the
local specifying agency guidelines and the AASHTO
Roadside Design Guide for requirements for embedment
depth into the rock and size of the hole. If rock is
encountered at post locations 0-1, auger a hole in the
rock large enough for full post embedment and proper
compaction of approved ll material.
If rigid pavement (e.g. concrete or asphalt) of any
thickness is encountered at post locations 0-8, ensure
a proper "leave-out" area is provided around the posts ,
refer Figures 6 and 7. This is lled with road controlling
agency approved back ll material.
*Grout ll material must have a 28-day compressive
strength of 120 psi (0.85 MPa) or less.
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