7-87 A Certificate of Compliance shall be provided for all material in accordance with the requirements of the General Statement of Division 700 - Materia ls.
720.06 Steel H-beam Posts Steel H-beam Posts shall conform to the requirements of
ASTM A 992. All work shall conform to the applicable provision s of Section 504 - Structural Steel. Steel shall be hot-dip galvanized in accorda nce with AASHTO M 111. All steel hardware for use with H-beam poles shall be hot-dip galva nized in accordance with AASHTO M 232 (ASTM A 153 or B 695, Class 50, Type 1).
720.07 Anchor Bolts Anchor bolts and nuts supplied for aluminu m and/or steel
supports shall conform to ASTM A 449, Type 1, or ASTM F 1554, G rade 55, both with a minimum yield strength of 55 ksi. Anchor bolts shall be suppli ed with 2 heavy hex nuts and 2 hardened washers and unless otherwise specified the anchor bo lts shall have a 90° bend with a 6 inch minimum leg length at the lower end. The anchor bolts, nuts and hardened washers shall be hot-dip galvanized in accordance with AASHTO M 232 or AASHTO M 298 Class 50, Type 1. The bolt shall be zinc-coated 12 inches from the exposed end, unless otherwise specified. If the anchor bolts are to be used with b reakaway devices incorporating the function of a nut, for example, longitudinally grooved brea kaway couplings, nuts or washers will not be required. Alternate materials, grades, and designs may be used for the a nchor bolts subject to approval of the Engineer.
720.08 U-Channel Posts Except as otherwise authorized, Rib Ba ck U-Channel posts
for signs of less than 4 ft² in area, shall be fabricated of st eel weighing 2.5 lb/ft, and shall not be doubled-up. Aluminum U-channel posts having the same streng th characteristics and shape as steel U-channel posts may be used, subject to the appr oval of the Resident. The steel U-channel posts shall be powder coat green in accordance with AASHTO M 111.
720.09 Wood Ornamental Light Standard Material for wood light standards shall be
Western Red Cedar (Rhuja Plicata) or other species with equal o r better decay resistance, approved by the Resident . The wood cross section shall be 10 by 10 inches minimum. The m ounting height and depth of burial shall be as shown on the plans. The following items shall be supplied, a 2 inch slipfitter of corrosion resistant material of adequate length to support the luminaire, a sideplo wed wire-way covered by a suitable flush filler strip to accommodate three, number 12 con ductors, a pair of two-piece plinths for conduit entrance and splice box. All bolts shall be hot-dip galvanized in accordance with AASHT O M 232 or AASHTO M 298 Class 50, Type 1. All parts of the wood light standard shall be prefitted and pr edrilled, holes shall be counterbored to conceal bolts and filled with mastic compound. 7-88 The wood light standard surface finish shall be as indicated o n the plans.
720.10 Wood Utility Pole Wood Utility poles shall be Douglas Fir, Red Pine or
Southern Yellow Pine, conforming t o ANSI Standard Specification 05.1 and of the class and length as indicated on the plans. Poles shall not have more than 180° twist in grain over the fu ll length. Sweep shall be no more than 4 inches. Tops of poles shall be beveled. Wood Utility poles shall be pressure treated, after fabricatio n in accordance with AASHTO Specifications M 133 and AWPA U1, UC4B, Commodity Specif ication D: Poles.
720.11 Mast Arms for Wood Utility Poles All mast arms for woo d Utility pole
attachment shall be standard 2 inch diameter pipe of specified length and shall include a mast arm head, universal joint, insulated wire inlet, tie rods, cross arm and mounting brackets. The vertical distance between the mast arm and point of attachment of the cross arm shall not be less than 40 percent of the mast arm length. All attachments for mast arm assemblies shall be designed to withstand stresses due to the m ast arm and signal weights and wind loads generated by a 100 mph wind.
720.12 Wood Sign Posts Wood sign posts shall be rectangular, straight and sound
timber, cut from live growing native spruce, red pine, hemlock or cedar trees, free from loose knots or other structurall y weakening defects of importan ce, such as shake or holes or heart rot. A tolerance of 1 i nch in length and ¼ inch in width or thickness is permitted in the dimensions of rectangular posts. They shall be sawn true and p laned 4 sides. Nominal dimensions of rectangular posts shall be as given in the Contra ct documents. Breakaway requirements 4 by 6 inch posts shall have two 1½ in ch diameter holes drilled perpendicular to traffic, one hole centered at 4 inches above ground level and one centered at 18 inches above ground level (posts shall be in stalled with the 6 inch length parallel to the roadway); 6 by 6 inch posts shall have t wo 2 inch diameter holes drilled perpendicular to traffic, one hole centered at 4 inches above ground level and one centered at 18 inches above ground level; 4 by 4 inch posts need not be modified. When pressure treated sign posts are called for on the plans, the wood shall be Yellow Pine, Number 2 or better, or the species listed above. The pressure treated wood shall meet AASHTO M 133 and AWPA Standard U1, UC4A, Commodity S pecification A: Sawn Products. SECTION 721 - BREAKAWAY DEVICES
721.01 Breakaway Devices Breakaway devices shall be capable o f supporting all
design loads and shall conform in all respects to the requireme nts of the AASHTO "Standard Specifications for Str uctural Supports for Highway Si gns, Luminaires and Traffic 7-89 Signals" and all applicable commentary. Breakaway Support Cert ification of both breakaway and structural adequacy shall be provided by the Manu facturer. Design calculations or test data of production samples to support cert ification shall be provided. Breakaway support components shall provide the same or greater structural strength as the support post or pole utilizing the breakaway device. SECTION 722 - GEOTEXTILES
722.00 General Geotextile Property Requirements This is a mat erials specification
covering geotextile fabrics for use in stabilization/reinforcem ent, drainage, erosion control and separation applications. This specification sets forth a s et of physical, mechanical and endurance properties that must be met, or exceeded, by the geot extile being manufactured. This specification is intended to assure both good quality and performance of geotextiles but is possibly not adequate for the c omplete specification in a sp ecific situation. Additional tests, or more restrictive values for the tests indicated, may be necessary under conditions of a particular application. This specification is based on geote xtile survivability from installation stresses. This Section is intended for use in con junction with Section 620 - Geotextiles. Table 1 provides strength properties for three geotextile cla sses. The geotextile shall conform to the properties in Table 1 based on the Geotext ile Class required in the application specific sections which follow. All Table 1 property values represent Minimum Average Roll Va lue (MARV) in the weakest principal direction and shall meet or exceed the va lues stated below. The geotextile properties required for each Class are dependent on geotextile elongation. Table 1 - Geotextile Strength Property Requirements Test Method a Class 1b Class 2b Class 3b Elongation Elongation Elongation <50%c 50%c <50%c 50%c <50%c 50%c Grab Strength (lbs) D 4632 315 202 247 157 180 112 Sewn Seam Strengthd (lbs) D 4632 283 182 223 142 162 101 Tear Strength (lbs) D 4533 112 79 90e 56 67 40 Puncture Strength (lbs) D 6241 618 433 495 309 371 223 Other Test Methoda Conformance D 4759 Sampling and Testing D 4354 Storage and D 4873