STEEL SIGN STRUCTURES SECTION 617 306
617.1Description.
This work consists of providing, fabricating, and erecting steel sign structures.
617.2Materials.
A.Cantilever, Center Mount , Monopipe, or Overhead with Single Plane Truss.
1.Columns, Struts, and Truss Chords. Section 1039.8 .E
2.Truss Webs and Truss Verticals. ASTM A53, Grade B, Type E or S for Tubular Members; or
Section 1039.8 for pipe and tubing.
3.Steel Angles, Shapes, Plates and Backing Rings. Section 1039.1
B.Overhead with Tri-Chord or Box -Shaped Truss. Sections 617.2.A.1 and 617.2.A.2.
C.Fabricated Structural Steel. Section 1039.1
D.U-bolts, Nuts, Washers , and Direct Tension Indicators. Section 1039.2
E.High -Strength Fasteners. Section 1039.3
F.Anchor Bolts, Nuts, and Washers. Section 1039.4
G.Galvanizing Section 1039.10
H.Galvanized steel screen - 1/2-inch by 1/2 -inch mesh and 0.063 -inch diameter galvanized steel
wires.
617.3Construction.
A.Submittals.
1.Submit documentation in accordance with Section 615.3.A.
2.Submit working drawings in accordance with Section 615.3.A. On fabrication drawings, identify
the splice and weld locations, type, size, process, and method and procedure for non - destructive testing. Field -verify dimensions before submitting working dra wings.
3.Submit erection plan in accordance with Section 615.3.A.
4.Obtain the engineer’s approval for alternate designs. Provide structurally equivalent alternate
designs. The engineer may reject alternate designs for any reason.
B.Fabricate in accordance with Section 615.3.B., except as noted below:
1.For welds, comply with AWS D1.1 structural welding code as well as the additional requirements
of AASHTO LRFD Specifications for Structural Supports for Highway Signs, Luminaires, and Traffic Signals, Section 5.14.
2.Perform and evaluate non -destructive weld testing according to cyclically loaded non - tubular
tension criteria.
a.The Department's plant inspector will select weld locations and weldments for testing.
Source: Delaware Standard Specifications for Road and Bridge Construction, 2025 Edition. Pages 316–316 of 779.