Trinity 620005, Assembly Manual

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TrinityHighway.com 17 Revision F November 2021
Post Alignment
Lay out the post alignment and post spacing according to the contract specifications.
Maximum post spacing for the NCHRP Report 350 CASS
®
S3 is 21’-0” [6.4 m]; Maximum
post spacing for MASH CASS
®
S3 is 10’-6” (3.2 m].
Driven Foundation Sleeve With and Without Soil Plate
Complete the following steps for a driven foundation sleeve assembly.
1. Drive the foundation sleeve (PN-34039G) or foundation sleeve with soil plate (PN-
33952A) with an appropriate driving head. During the driving process ensure that the
sleeve is aligned, properly oriented (with interior tabs 15” [375 mm] from the top of the
tube sleeve and the 3” [75 mm] side parallel to the roadway), soil is prevented from
coming up into the sleeve, and the sleeve is not damaged.
Sleeve in Poured Concrete Footing
Complete the following steps for placing a sleeve in a poured concrete footing.
1. Place a plastic cap (PN-5837B) on the bottom of the foundation sleeve (PN-34038G) or
tape the bottom end of the foundation sleeve to prevent the concrete from coming into the
tube.
2. Punch or auger a minimum 12” [300 mm] diameter x 30” [762 mm] deep hole for the
concrete footing.
3. Pour the MSC in the hole, ensuring the concrete is flush with the finish grade.
4. Place the foundation sleeve in the poured concrete footing. Ensure that the sleeve is
positioned plumb, flush with the top of the footing, a minimum of 3” [75 mm] from the edge
of the footing, properly oriented (with interior tabs 15” [375 mm] from the top of the tube
sleeve and the 3” [75 mm] side parallel to the roadway) and in alignment. Consolidate the
concrete to remove air pockets in compliance with applicable state specifications for
similar applications.
5. Place a rebar ring (PN-5836B) around the top of the sleeve 2” to 3” [50 mm to 75 mm]
from the top of the footing.
6. Smooth off the top of the concrete footing with a slight crown from the sleeve.
7. Allow the footing to attain the required concrete strength before disturbing the foundations,
including the placement of posts.
Sleeve in a Mow Strip
Trinity Highway may allow the use of an alternate line post footing if the system is installed with
an acceptable mow strip application. Please contact Trinity Highway for additional details. If the
mow strip is not acceptable, follow the steps in “Sleeve in Poured Concrete Footing” section.
Precast Concrete Footings
The precast concrete footings will be made in forms and fabricated the same as if placed in an
augured or punched hole.
Post Placement
Posts
The CASS
®
S3 posts can be driven, placed in a driven sleeve, placed in a sleeve in a concrete
footing (poured or precast), or mounted to a concrete surface.