Art. 611.07 Steel Plate Beam Guardrail Pipe drains will be measured and paid for according to Section 601. Storm sewer protected will be paid for at the contract unit price per foot (meter) for STORM SEWERS PROTECTED, CLASS A, of the type and diameter specified. Storm sewer (special) will be paid for at the contract unit price per foot (meter) for STORM SEWERS (SPECIAL), of the diameter specified. Concrete headwalls, concrete slabs, and paved ditch sections required for this work will be paid for at the contract unit price per cubic yard (cubic meter) for MISCELLANEOUS CONCRETE. Field tile junction vaults will be paid for at the contract unit price per each for FIELD TILE JUNCTION VAULTS, of the diameter specified. Trench backfill will be measured and paid for according to Section 208. Excavation in rock will be measured and paid for according to Section 502. Removal and replacement of unsuitable material below bedding grade will be paid for according to Article 109.04. Sealing the ends of existing field tile will not be paid for as a separate item, but shall be considered as included in the unit prices bid for the various pay items of work involved. SAFETY RELATED ITEMS SECTION 630. STEEL PLATE BEAM GUARDRAIL
630.01 Description. This work shall consist of furnishing and erecting steel
plate beam guardrail and posts.
630.02 Materials. Materials shall be according to the following.
Item Article/Section
a.Steel Plate Beam Guardrail ............................................................... 1006.25
b.Wood Posts and Wood Block .............................. 1007.01, 1007.02, 1007.06
c.Steel Posts, Blockouts, Restraints, and Wire Rope for Guardrail ...... 1006.23
d.Preservative Treatment ..................................................................... 1007.12
e.Reinforcement Bars ........................................................................... 1006.10
f.Plastic Blockouts (Note 1)
g.Chemical Adhesive Resin System ..................................................... 1027.01
h.Controlled Low-Strength Material (CLSM) .............................................. 1019 Note 1. Plastic blockouts may be used in lieu of wood blockouts for steel plate beam guardrail. The plastic blockouts shall be the minimum dimensions shown on the plans and shall be on the Department’s qualified product list. Steel Plate Beam Guardrail Art. 630.05 CONSTRUCTION REQUIREMENTS
630.03 General. Steel plate beam guardrail and posts shall be furnished and
erected as shown on the plans and as specified herein. All holes in posts and blockouts shall be 3/4 in. (19 mm). All rail elements shall be lapped in the direction of traffic in the adjacent lane. Load tests shall be conducted on ten percent of all anchor bolts used in guardrail installation. The tests shall be conducted in the presence of the Engineer. The equipment and method used shall meet the approval of the Engineer. The minimum test load shall be 7500 lb for 3/4 in. (33 kN for M20) diameter bolts and 3000 lb for 5/8 in. (13 kN for M16) diameter bolts in direct pull. For each anchor bolt that fails the test, two more anchor bolts selected by the Engineer shall be tested. Each anchor bolt that fails to meet the test requirements shall be reset, or removed and the hole drilled deeper and reset, and retested until the anchor bolt passes the local test.
630.04 Fabrication. The plates for the rail element shall be blanked to proper
shape, fabricated, and ready for assembly when received. No punching, drilling, cutting, or welding will be permitted in the field. Where steel plate beam guardrail is constructed on curves which have a radius of 150 ft (45 m) or less, the rail element plate shall be shop curved to the proper radius with the road side of the rail either concave or convex as required. Plates in lap splices shall make contact throughout the entire area of the splice. All bolts in curved or deformed portions of the rail element shall be fabricated in such a manner that satisfactory bearing is obtained under the bolt head. Rail elements shall be furnished in nominal lengths of either 12 ft 6 in. or 25 ft 0 in. (3.8 m or 7.6 m).
630.05 Posts. Posts shall be as follows.
a.Wood Posts. Wood posts and blocks shall be treated. The posts and blocks shall be cut to the proper dimensions before treatment. No cutting of the posts or blocks will be permitted after treatment. Posts shall be erected according to Article 634.05.
b.Steel Posts. Steel posts may be driven by hand or mechanical methods provided they are protected by a suitable driving cap and the earth around the posts compacted, if necessary, after driving. When steel posts are driven to incorrect alignment or grade, they shall be removed and set according to Article 634.05. When it is necessary to shorten the posts in the field, the lower portion shall be cut off in a manner to provide a smooth cut with minimum damage to the galvanizing. Cut areas shall be repaired according to the requirements of AASHTO M 36. Art. 630.06 Steel Plate Beam Guardrail
630.06 Shoulder Stabilization at Guardrail. Shoulder stabilization shall be
constructed at the locations of steel plate beam guardrail installation according to the details shown on the plans. On new construction projects, the material used in the shoulder stabilization shall be the same as that used in the adjacent paved shoulder. On shoulder resurfacing projects, the material used in the shoulder stabilization shall be the same as that used for the shoulder resurfacing. When portland cement concrete is used, shoulder stabilization shall be constructed according to the applicable portions of Section 483. The shoulder stabilization shall be constructed simultaneously with the adjacent portland cement concrete shoulder. Guardrail posts shall be driven through leaveouts or holes cored in the completed shoulder stabilization. The void around each post shall be backfilled with earth or aggregate and capped with hot-mix asphalt (HMA) or CLSM. When HMA is used, shoulder stabilization shall be constructed according to the applicable portions of Section 482. On new construction, the shoulder stabilization shall be constructed simultaneously with the HMA shoulder. On shoulder resurfacing projects, the portion of the shoulder stabilization below the surface of the existing paved shoulder shall be placed and compacted separately. The guardrail posts shall be driven through holes cored in the completed shoulder stabilization. The void around each post shall be backfilled with earth or aggregate and capped with HMA or CLSM. When driving guardrail posts through existing shoulders, shoulder stabilization, or other paved areas, the posts shall be driven through cored holes. The void around each post shall be backfilled with earth or aggregate and capped with HMA or CLSM.
630.07 Method of Measurement. This work will be measured for payment in
feet (meters) along the top edge of the rail elements, continuous through laps and splices. Two rails attached to a single post will be measured once as double rail (Type D). Steel plate beam guardrail mounted on existing culverts will be measured for payment in feet (meters) extending from center to center of the first post driven adjacent to the structure. Portland cement concrete shoulder stabilization at guardrail will be measured for payment according to Article 483.09. HMA shoulder stabilization at guardrail will be measured for payment according to Article 482.07. Excavation in rock will be measured for payment according to Article 502.12. Long-span guardrail over culvert will be measured for payment in feet (meters).
630.08 Basis of Payment. This work will be paid for at the contract unit price
per foot (meter) for NON-BLOCKED STEEL PLATE BEAM GUARDRAIL; STEEL PLATE BEAM GUARDRAIL, TYPE A, 6 FOOT (1.83 M) POSTS; STEEL PLATE BEAM GUARDRAIL, TYPE A, 9 FOOT (2.74 M) POSTS; STEEL PLATE BEAM GUARDRAIL, TYPE B, 6 FOOT (1.83 M) POSTS; STEEL PLATE BEAM Traffic Barrier Terminals Art. 631.03 GUARDRAIL, TYPE B, 9 FOOT (2.74 M) POSTS; or STEEL PLATE BEAM GUARDRAIL, TYPE D, 6 FOOT (1.83 M) POSTS. When end sections are specified, they will not be paid for as a separate item, but shall be considered as included in the unit price for steel plate beam guardrail. Steel plate beam guardrail mounted on existing culverts will be paid for at the contract unit price per foot (meter) for STRONG POST GUARDRAIL ATTACHED TO CULVERT or WEAK POST GUARDRAIL ATTACHED TO CULVERT, of the case specified. Portland cement concrete shoulder stabilization at guardrail will be paid for according to Article 483.10. HMA shoulder stabilization at guardrail will be paid for according to
Article 482 — 08.
Excavation in rock will be paid for according to Article 502.13. Steel plate beam guardrail incorporating long-span spacing will be paid for at the contract unit price per foot (meter) for LONG-SPAN GUARDRAIL OVER CULVERT, 12 FT 6 IN (3.8 M) SPAN; LONG-SPAN GUARDRAIL OVER CULVERT, 18 FT 9 IN (5.7 M) SPAN; or LONG-SPAN GUARDRAIL OVER CULVERT, 25 FT (7.6 M) SPAN. Steel plate beam guardrail incorporating treated timber at the back side of the post will be paid for at the contract unit price per foot (meter) for BACK SIDE PROTECTION OF GUARDRAIL. SECTION 631. TRAFFIC BARRIER TERMINALS
631.01 Description. This work shall consist of furnishing and erecting traffic
barrier terminals.
631.02 Materials. Materials shall be according to the following.
Item Article/Section
a.Rail Element Plates, End Section Plates, and Splice Plates .............. 1006.25
b.Bolts, Nuts, Washers and Hardware .................................................. 1006.25
c.Wood Posts and Wood Blockouts ........................ 1007.01, 1007.02, 1007.06
d.Preservative Treatment ..................................................................... 1007.12
e.Steel Posts ........................................................................................ 1006.23
f.Rubrail, Structural Shapes, and Plates .............................................. 1006.04
g.Hollow Structural Tubing ................................................................ 1006.27(b)
h.Chemical Adhesive ............................................................................ 1027.01 CONSTRUCTION REQUIREMENTS
631.03 General. Traffic barrier terminals shall be furnished and erected as
shown on the plans and as specified herein and constructed according to Articles 630.03 through 630.06.
Referenced in this section
STEEL PLATE BEAM GUARDRAIL in other states
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Source: Illinois Standard Specifications for Road and Bridge Construction, 2022 Edition. Pages 569–572 of 1,217. View official source ↗