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                Safety Eligibility Letter WZ-03(c)
  
  **Hardware Type:**
            Work Zone Devices
                          **Code:**
            WZ-03(c)
                                  **Testing Criteria:**
            NCHRP 350
                          **Manufacturer:**
            TTI Report, Note 2
                          **Device Description:**
            1) Type III Hollow Core Plastic Barricade4 (see Figure II.9 "Figure 1.")(Vertical braces were added to support the panels prior to putting them in place on the barricade.)
2) Type III Perforated Tubing Barricade (3.7 m) (see Figure II.10 "Figure 2.")
(Vertical braces added, as noted above. Base connection detail also modified. Acceptable with 1x8 wood or hollow core plastic rails.) 
3) Type III perforated Tubing Barricade (1.2 m) (see Figure II.11 "Figure 3.")
(Vertical braces added, as noted above. Base connection detail also modified. Acceptable with 1x8 wood or hollow core plastic rails.) 
4) HwyCom Fiberglass Type III Barricade with plastic panels (see Figure II.12 "Figure 4.") (Round 76-mm diameter fiberglass pipes were used as the supports.)
5) Price Fiberglass Type III Barricade (see Figure II.13 "Figure 5.") (89 mm x 32 mm x 6.4 mm fiberglass U-channel supports were used.)
6) Spring-loaded Portable Sign Support (3) (see Figure II.14 "Figure 7") (Tested with mounting height of 610-mm.)
7) Ground-mounted Type III barricade (see Figure II.15 "Figure 8.") (Steel supports ground mounted in Poz-Loc sockets. Also acceptable with fiberglass supports in a "Universal" anchor, and with perf. square steel tubes in anchors.)
8) Vertical Panel Assembly (three shown in Figure II.16 "Figure 11.") (Plywood panels mounted on wood, steel angle, and plastic c-channel posts.)
9) Skid-mounted Sign Support. (See Figure II.17
"Figure 10.") (No modifications, but was tested end-on.)
                          **View PDF:**
            wz-3.pdf (4.17 MB) U.S. DEPARTMENT OF TRANSPORTATION

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