S-Q 8 Slip Base, Perforated, 3-Post Sign Support System

Description: The S-Q 8 Slip Base, Perforated, 3-Post Sign Support System consists of three, 2-1/2 inch x 12 gauge perforated square steel tube signposts inserted into three slip base castings. The signposts are punched with Ø7/16 inch holes spaced on one inch centers along the length on all four sides. The signposts are secured to the slip base castings with two Ø3/8 inch shoulder bolts and nuts. The slip base castings are secured to the slip base stubs with three Ø1/2 inch bolts and nuts. A bolt keeper plate is sandwiched between the slip base casting and the slip base stub. The anchor sleeves are 3 inch x 7 gauge square steel tube, 36 inches long with a 12 inch x 18 inch x 3/16 inch soil plate welded to it. The anchors are embedded in soil such that the slip base stub top plates are a maximum of 4 inches above grade. A 72 inch tall x 96 inch wide x 0.080 inch thick aluminum sign panel with reflective sheeting is secured to the signposts with a U-channel and clamp system. The sign is secured to three U-channel sections using Ø3/8 inch bolts and nuts. The sign is mounted at a height of 7 feet 4 1/2 inches above grade to the bottom of the sign. The anchor sleeve conforms to ASTM A500 and the soil plate is fabricated from steel that conforms to ASTM A36. The signpost steel conforms to ASTM A653.

Test Level: 3

Eligibility Letter: SS-189

MASH Test Number: 3-60, 3-61, 3-62

Proprietary/Non-proprietary: Non-proprietary

Pass/Fail: Pass

Evaluation: Full-Scale Crash Testing

Sponsor: Trinity Highway Products