Metal Post Art. 729.03 The 2 x 2 in. (50 x 50 mm) top section shall be telescoped into the base section a minimum of 8 in. (200 mm) and a maximum of 12 in. (300 mm) and the two sections fastened together as shown in the plans.
c.Base Casting. Base casting shall consist of two sections as shown in the plans. The base section shall be 2 1/4 x 2 1/4 x 8 1/2 in. (57 x 57 x 216 mm). This section shall be inserted at least 6 3/4 in. (170 mm) into the base casting to form a shim into which the 2 in. (50 mm) section is placed. The top section shall be inserted at least 6 3/4 in. (170 mm) into the base casting. After the top section is in place, the installation shall be bolted together as shown in the plans.
728.05 Method of Measurement. This work will be measured for payment in
feet (meters). The length measured will be the total length of all sections installed, except for any internal splice members and any telescoping of a top section more than 12 in. (300 mm) into a base section.
728.06 Basis of Payment. This work will be paid for at the contract unit price
per foot (meter) for TELESCOPING STEEL SIGN SUPPORT. Payment for the base casting will be made according to Section 731. SECTION 729. METAL POST
729.01 Description. This work shall consist of furnishing Type A and/or
Type B metal posts, and installing them utilizing the direct burial method.
729.02 Materials. Materials shall be according to the following.
Item Article/Section
a.Metal Post .......................................................................................... 1006.29 CONSTRUCTION REQUIREMENTS
729.03 General. The metal posts may be driven by hand or mechanical
means to a minimum depth of 3.5 ft (1.0 m) for Type A or 4.0 ft (1.2 m) for Type B. The depths shall be measured from the ground line. The post shall be protected by a suitable driving cap and when required by the Engineer, the material around the post shall be compacted after driving. Scratching, chipping, or other damage to the posts shall be avoided during handling and installation. If chips and/or scratches occur, the areas shall be recoated in the field by a method meeting the coating manufacturer's recommendations. Chips and scratches totaling more than five percent of the surface area of any one post and/or more than five percent of the surface area in any 1 ft (300 mm) segment of any one post shall be cause for rejection of the post. Art. 729.04 Wood Sign Support When the post specified is too long, the Contractor may choose to cut the post to the required length or increase the embedment. Any post cut shall be installed with the cut end at the bottom.
729.04 Method of Measurement. The metal post will be measured for
payment in feet (meters). The length to be measured shall be the total length installed as shown on the plans.
729.05 Basis of Payment. This work will be paid for at the contract unit price
per foot (meter) for METAL POST - TYPE A or TYPE B. SECTION 730. WOOD SIGN SUPPORT
730.01 Description. This work shall consist of furnishing and installing wood
sign supports for ground-mounted signs.
730.02 Materials. Materials shall be according to the following.
Item Article/Section
a.Coarse Aggregate .............................................................................. 1004.05
b.Wood Sign Support ............................................................................ 1007.05 CONSTRUCTION REQUIREMENTS
730.03 General. When the 4 x 6 in. (100 x 150 mm) posts are used, they
shall be modified to satisfy the breakaway requirements by drilling 1 1/2 in. (38 mm) diameter holes centered at 4 and 18 in. (100 and 450 mm) above the groundline and perpendicular to the centerline of the roadway. When the support is too long, the Contractor may choose to dig the hole deeper or to cut the support to the required length. All cut ends shall become the tops of the supports and shall be treated according to Article 1007.13 before the signs are mounted.
730.04 Installation. The support shall be installed in a vertical hole not
exceeding 12 in. (300 mm) in diameter, and not less than 5 ft (1.5 m) deep. The support shall be centered in the hole with the 6 in. (150 mm) dimension parallel to the adjacent edge of pavement. The hole shall then be backfilled with CA 6, thoroughly tamped in 12 in. (300 mm) lifts. At least 14 days after placing the sign assembly on the post, the Contractor shall inspect each installation, straightening and retamping around each post as required.
730.05 Method of Measurement. This work will be measured for payment in
feet (meters). The length to be measured will be the total length installed. Any embedment over 6 in. (150 mm) beyond that shown in the plans will not be included for measurement.
730.06 Basis of Payment. This work will be paid for at the contract unit price
per foot (meter) for WOOD SIGN SUPPORT.
Referenced in this section
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Source: Illinois Standard Specifications for Road and Bridge Construction, 2022 Edition. Pages 660–661 of 1,217. View official source ↗