7-110 SECTIO N 732 – RAILIN G MATERIALS
732.0 1 META L HAND RAILING . Material for metal hand railing and sleeves shall conform to the
requirements of ASTM A53 or ASTM A500 , Grade B.
732.0 2 Aluminu M Bridg E Railing .
a.Aluminum Alloy . Aluminum alloy for aluminum bridge railing, including hand railing, shall conform to the requirements of Subsection 715.0 2.
b.Stainless Steel Bolts, Nuts, Washers, and Set Screws . Bolts and washers for post, railing , and offset block connections shall conform to the requirements of ASTM F593, Alloy Group 1, Condition AF, Alloy 304 and its supplementary requirements for S5. Nuts shall conform to the requirements of ASTM F836M, Property Class A1 -50, Condition AF, Alloy 304 and ASTM F594, Alloy Group 1, Co ndition AF, Alloy 304. Stainless steel set screws for use in aluminum bridge railing connections shall conform to the requirements of ASTM F880, Property Class A1 -70, Condition CW, Alloy 304 and ASTM F880, Alloy Group 1, Condition CW, Alloy 304. Stainless steel anchor bolts and washers shall conform to the requirements of ASTM F593, Alloy Group 1, Condition CW, Alloy 304. Heavy hex stainless steel nuts for stainless steel anchor bolts shall conform to the requirements of ASTM F836M, Property Class A1-70, Condition CW, Alloy 304 and ASTM F594, Alloy Group 1, Condition CW, Alloy 304.
c.Structural Carbon Steel . Structural carbon steel for anchor channel bars, approach railing posts, offset brackets, and anchor bolt sleeve bases shall conform to the r equirements of AASHTO M 270, Grade 250 (Grade 36) or ASTM A36.
d.Steel Pipe . Steel pipe for anchor bolt sleeves shall conform to the requirements of Subsection
740.0 4.
e.Anchor Bolts, Nuts, and Washers . Anchor bolts, nuts, and washers shall conform to the requirements of Subsection 714.07 .
f.Fabric Pads . Fabric pads for aluminum posts shall conform to the requirements of Subsection
731.01 or Subsection 731.02 .
g.Aluminum Impregnated Caulking Compound . Aluminum filled silicone sealant shall conform t o the requirements of Subsection 707.1 1. 7-111 732.0 3 GALVANIZE D BOX BEAM BRIDG E RAILING .
a.Structural Steel Tubing . Tubing for posts, rail ings, and rail ing splices shall conform to the requirements of ASTM A500, Grade B, except as modified below .
1.The manufacturer shall test both welded and formed tubular material for the physical properties specified. Results of all tests shall be submitted with material certifications.
2.Welds shall be sound, free from defects, and have no repairs. Transverse mi ll welds will not be permitted.
3.Longitudinally -welded tubing shall have a tensile strength of 58,000 psi when tested in accordance with ASTM E8 .
4.A traceable identification number shall be placed on each piece of material in a form that can be read after the galvanizing process. Quantities of the same item made from the same heat numbers are allowed to be packaged together with a single identification.
5.Posts and rail ings shall be CVN tested in accordance with AASHTO T 243 , Frequency H testing. Fu ll size 3/8 inch 3/8 inch specimens shall be used whenever thickness permits. Sub-size specimens may be used when material thickness is less than 3/8 inch. The average energy absorbed by a sub -sized specimen shall be prorated for the actual thickness of the specimen. The average energy absorbed by a full -size specimen shall be not less than 15 foot-pound s of force at 0°F.
b.Structural Carbon Steel (Non -Tubular) .
1.Structural carbon steel for posts, baseplates, and rail ing splices shall meet the requirements of ASTM A5 72, Grade 50 or AASHTO M 270, Grade 345 (Grade 50). Posts and baseplates shall be CVN tested in accordance with AASHTO T 243 , Frequency H testing. Full size 3/8 inch 3/8 inch specimens shall be used whenever thickness permits. Sub -size specimens may be u sed when material thickness is less than 3/8 inch. The average energy absorbed by a sub -sized specimen shall be prorated for the actual thickness of the specimen. The average energy absorbed by a full -size specimen shall be not less than 15 foot -pounds of force at 40°F.
2.Structural carbon steel for anchor plates shall conform to the requirements of AASHTO M 270, Grade 250 (Grade 36) or ASTM A36 .
3.Structural carbon steel for angles shall conform to the requirements of AASHTO M 270, Grade 345 (Grade 5 0) or ASTM A572 , Grade 50 . 7-112 (c) Bolts, Nuts, and Washers . High -strength bolts shall conform to the requirements of ASTM F3125, Grade A 325, Type 1 , or ASTM A449, Type 1 . High -strength nuts shall conform to the requirements of ASTM A563 , Grade DH. High -strength washers shall conform to the requirements of ASTM F436 . Lock washers shall be high -carbon heat -treated spring steel conforming to the requirements of ASME D18.2 1.1.
d.Anchor Bolts, Nuts, and Washers . Anchor bolts, nuts, and washers shall conform to the requirements of Subsection 714.07 .
732.0 4 Steel Beam Bridg E Railing .
a.Beam Guardrail . Beam guardrail for bridge railing shall conform to the requirements of Subsection
728.02 The beam guardrail shall be Class B type.
b.Steel Tubing . Tubular steel backing material for steel beam bridge railing shall conform to the requirements of ASTM A 500, Grade B. Splice material shall conform to Subsection 732.04(c) .
c.Steel Posts and Components . Posts, baseplates, offset blocks, brackets, washers, and other steel components shall be structural carbon steel conforming to the requirements of AASHTO M 270, Grade 345W (Grade 50W) ; ASTM A588 ; ASTM A572, Grade 345 (Grade 50) ; or AASHTO M 270, Grade 345 (Grade 50). Posts, baseplates, and post mounting brackets or components shall be CVN tested for impact properties in accordance with AASHTO T 243 , Frequen cy H testing. Full size 3/8 inch 3/8 inch specimens shall be used whenever thickness permits. Sub -size specimens may be used when material thickness is less than 3/8 inch. The average energy absorbed by a sub -sized specimen shall be prorated for the actual thickness of the specimen. The average energy absorbed by a full -size specimen shall be not less than 15 foot -pounds force at 40°F.
d.Steel Pipe . Steel pipe for anchor bolt sleeves shall conform to the requirements of Subsection
740.0 4.
e.Anchor Bolts, Nuts, and Washers . Anchor bolt s, nuts, and washers shall conform to the requirements of Subsection 714.07 . 7-113 SECTIO N 735 – INSULATIN G MATERIALS
735.0 1 POLYSTYREN E INSULATIO N BOARD . Polystyrene insulation board shall conform to the
requirements of AASHTO M 230 . It shall be furnished in nominal 2 -foot × 8-foot boards and shall be of the thickness, compressive strength, and density shown on the Plans.
735.0 2 BLANKE T INSULATIO N MATERIAL . Blanket insulation material shall consist of mats of
fiberglass, rock wool, balsam wool, or other approved insulating m aterials completely enclosed on all sides within weatherproof facings of reinforced, coated Kraft paper or polyethylene sheeting. The thermal conductivity of the blanket insulation material shall not exceed 0.27 BTU -inch per hour per square foot per degree Fahrenheit at a mean temperature of 75°F.
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Source: Vermont Standard Specifications for Construction, 2024 Edition. Pages 1262–1264 of 1,380. View official source ↗