SECTION 609 – BEAM GUIDE RAIL
609.01 Description
This Section describes the requirements for installing, resetting, or removing beam guide rail.
609.02 Materials
Provide materials as specified: Concrete ................................ ................................ ................................ ................................ ...................... 903.03 Reinforcement Steel ................................ ................................ ................................ ................................ ..... 905.01 Adhesive Anchor System ................................ ................................ ................................ ......................... 908.01.04 Flexible Delineators ................................ ................................ ................................ ................................ ..... 911.03 Rail Element ................................ ................................ ................................ ................................ ............ 913.01.01 End Treatment ................................ ................................ ................................ ................................ ......... 913.01.02 Posts ................................ ................................ ................................ ................................ ........................ 913.01.03 Blockouts ................................ ................................ ................................ ................................ ................. 913.01.03 Rub Rail................................ ................................ ................................ ................................ ................... 913.01.04 Miscellaneous Hardware ................................ ................................ ................................ .......................... 913.01.05
609.03 Construction
609.03.01 Beam Guide Rail
Install beam guide rail, single or dual faced, so that no unprotected end is exposed to approaching traffic. Within the same working day, replace all existing beam guide rail or cable guide rail that is removed. Where possible, install new beam guide rail exposed to approaching traffic before the removal of the existing system. Before driving or mounting the posts, determine the location of utilities that may conflict with the posts. The Contractor may adjust post spacing by 6 inches, as approved, to eliminate such conflicts. After completing the wiring for each electrical system and before making connections, perform the following tests on each circuit using suitable equipment in the presence of the RE:
1.Tests for continuity.
2.Tests for ground.
3.Tests for insulation resistance between circuit wires and from circuit wires to ground. Verify that the insulation resistance is at least 150 megaohms between conductors, or between conductor and ground for circuits with a total single conductor length of 1,500 feet or more, and at least 175 megaohms for circuits with a total single conductor length of less than 1,500 feet. The RE may require additional tests if it is suspected that conduit have been damaged. Locate and repair damage to the electrical conduit due to construction operations. Drive beam guide rail posts to the required position. Ensure that posts are driven plumb, properly spaced, and to the line and grade shown. Attach the beam guide rail element to the blockout at every post. Align the top edge of the beam guide rail element in a straight line or smooth curve, parallel to, or concentric with, the traveled way. Where a vertical transition is required, ensure that the top edge of the beam guide rail element forms the chords of a smooth vertical curve. If adjustments to the rail element are necessary, obtain RE approval before punching, drilling, or reaming of the rail element. Do not cut or weld the rail element. Install flexible delineators with white retroreflective sheeting on the right side of the direction of traffic. Install flexible delineators with yellow retroreflective sheeting on the left side of the direction of traffic. Mount flexible delineators on the blockout of beam guide rail using either a “U” channel base on the I-beam blockout or a flat base attached to a wood timber or synthetic routed blockout. Attach the base to the I -beam, wood timber blockout, or synthetic routed blockout using an adhesive recommended by the manufacturer of the base and panel. In addition to adhesive, mount flat base to a wood timber or synthetic routed blockout with two #10 x 3/4 inch long sheet metal screws. Mount the first delineator on the beam guide rail end treatment so that the plane face of the center of the reflective area is at an angle of 0 degrees with a line that is perpendicular to the direction of traffic. Mount subsequent delineators every 81 1/4 feet (13 sections of guide rail) along tangent mainline roadway, or every 43 3/4 feet (7 sections of guide rail) along curved mainline roadway with a radius of less than 1,910 feet. If a parabolic flare in the beam guide rail exists, place the second delineator at the end of the flared section with subsequent delineators spaced as stated a bove. If the distance between the last delineator and the end of the beam guide rail is greater than 40 feet on tangent mainline roadways, or 20 feet on curved mainline roadways, mount a delineator on the last post or end treatment. Repair damage to the galvanized coating according to ASTM A 780. Remove trees and shrubs as specified in 801.03 and 802.03 from the entire guide rail element extending 4 feet behind the guide rail post.
609.03.02 Rub Rail
When rub rail is required, bolt rub rail consisting of a steel channel or a bent plate to the beam guide rail posts.
609.03.03 Terminals and Anchorages
At least 10 days before beginning the w ork, submit the manufacturer’s recommendations the RE. Install terminals and anchorages according to the manufacturer’s recommendations. Excavate for post holes as specified in 202.03.03. Backfill and compact using the directed method as specified in
203.03.02 B.3.
Excavate cut slope as specified in 202.03.03 within the limits of the buried guide rail terminal. Drive beam guide rail posts for buried guide rail terminal to the required position. Ensure that posts are driven plumb, properly spaced, and to the line and grade shown. Attach the beam guide rail element to the spacer at every post. Attach the beam guide rail element and plate to the terminal posts. Align the top edge of the beam guide rail element in a straight line. Where a vertical transition is required, ensure that the top edge of the beam guide rail element forms the chords of a smooth vertical curve. Backfill with excavated material as specified in 203.03.02.B.3.
609.03.04 Beam Guide Rail Blockouts
Where required, attach blockout on existing beam guide rail between the steel posts and rail elements. Where beam guide rail is attached to a structure, attach the blockout to the structure. Re set beam guide rail, as specified in 609.03.05, to provide a smooth transition to the existing structure.
609.03.05 Reset Beam Guide Rail
When the RE determines that the beam guide rail is suitable for resetting, dismantle, store, and protect the components until resetting. To ensure that the beam guide rail meets the current standards, replace existing components, replac e damaged components, and provide necessary new components. Dispose of components not designated for resetting the beam guide rail as specified in 201.03.01.H. When storage is required, remove the bolts, cables, and other hardware from beam guide rail element, posts, and other members. Sort the components and store until resetting. Stack rail elements and ensure that cables are free of kinks. Replace beam guide rail components that are damaged, lost, or missing in storage. Reset the existing beam guide rail, as specified in 609.03.01, using the salvaged components. Use all the salvaged components before providing new components for resetting. Where feasible, use existing rail elements in guide rail sections or portions thereof that are reset with existing posts, and use new rail elements in guide rail sections or in portions thereof where new guide rail posts are used. When it is necessary to use existing and new rail elements in the same guide rail section, install a continuous length of each. Remove trees and shrubs as specified in 801.03 and 802.03 from the entire guide rail element extending 4 feet behind the guide rail post.
609.03.06 Removal of Beam Guide Rail
After removing beam guide rail, backfil l the post holes and compact the area to the elevation of the adjacent surface. Dispose of beam guide rail as specified in 201.03.01.H.
609.03.07 Beam Guide Rail Post, ___' Long
Install beam guide rail posts of various lengths in excess of 6 feet long as specified in 609.03.01.
609.03.08 Beam Guide Rail on Bridge
A.Beam Guide Rail and Thrie Beam Guide Rail Attachment to Sidewalk. Install beam guide rail consisting of steel double rail elements, steel blockouts, and steel posts welded to a base plate and mounted on bridge structure sidewalk, safety walk, or roadway sidewalk utilizing epoxy-grouted anchors approved by the Department. Install the required attachments as shown on the Plans. Core drill the holes in the bridge structure sidewalk for anchor bolts with a core drill bit. Ensure core drill bit sizes for anchor bolt holes conform to manufacture’s recommendations. Space hole s and locate to clear existing deck reinforcement, deck joints, conduits, and junction boxes. Fasten anchor bolts to the concrete according to the manufacturer’s recommendations. Ensure concrete and existing utility conduits are not damaged during the drilling for anchor bolts. Repair damage to the existing concrete caused by construction operations at no additional compensation. Furnish Certification as specified in 106.07 that the 7/8 inch diameter anchor bolt has a minimum pullout strength of 24 kips.
B.Beam Guide Rail Attachment to Existing Balustrade. Install beam guide rail consisting of double rail elements and steel blockouts tack welded to mounting plates and attached to balustrade using mounting plates and steel bolts, nuts, and washers. Install the required attachments as shown on the Plans.
609.03.09 Approach Guide Rail Transitions
Install the required approach guide rail transition as shown on the Plans.
609.04 Measurement and Payment
The Department will measure and make payment for Items as follows: Item Pay Unit BEAM GUIDE RAIL LINEAR FOOT BEAM GUIDE RAIL, DUAL FACED LINEAR FOOT MODIFIED THRIE BEAM GUIDE RAIL LINEAR FOOT MODIFIED THRIE BEAM GUIDE RAIL, DUAL FACED LINEAR FOOT BEAM GUIDE RAIL, BRIDGE LINEAR FOOT BEAM GUIDE RAIL, DUAL FACED, BRIDGE LINEAR FOOT THRIE BEAM GUIDE RAIL, BRIDGE LINEAR FOOT MODIFIED THRIE BEAM GUIDE RAIL, BRIDGE LINEAR FOOT THRIE BEAM GUIDE RAIL, DUAL FACED, BRIDGE LINEAR FOOT MODIFIED THRIE BEAM GUIDE RAIL, DUAL FACED, BRIDGE LINEAR FOOT RUB RAIL LINEAR FOOT FLARED GUIDE RAIL TERMINAL UNIT TANGENT GUIDE RAIL TERMINAL UNIT TELESCOPING GUIDE RAIL END TERMINAL UNIT CONTROLLED RELEASE TERMINAL UNIT CONTROLLED RELEASE TERMINAL ANCHORAGE UNIT BURIED GUIDE RAIL TERMINAL UNIT BEAM GUIDE RAIL ANCHORAGE UNIT BEAM GUIDE RAIL BLOCKOUT UNIT RESET BEAM GUIDE RAIL WITH EXISTING POSTS LINEAR FOOT RESET BEAM GUIDE RAIL, DUAL FACED, WITH EXISTING POSTS LINEAR FOOT RESET MODIFIED THRIE BEAM GUIDE RAIL WITH EXISTING POSTS LINEAR FOOT RESET MODIFIED THRIE BEAM GUIDE RAIL, DUAL FACED, WITH EXISTING POSTS LINEAR FOOT REMOVAL OF BEAM GUIDE RAIL LINEAR FOOT BEAM GUIDE RAIL POST UNIT BEAM GUIDE RAIL POST, ___' LONG UNIT BEAM GUIDE RAIL ELEMENT LINEAR FOOT MODIFIED THRIE BEAM GUIDE RAIL ELEMENT LINEAR FOOT APPROACH GUIDE RAIL TRANSITION TL-2 UNIT APPROACH GUIDE RAIL TRANSITION TL-3 UNIT The Department will measure the various guide rail Items by the linear foot along the face of the rail, excluding anchorages and end terminals. The Department will measure the various dual faced rail Items by the linear foot along the face of one rail excluding end terminals. The Department will measure BEAM GUIDE RAIL ELEMENT and RUB RAIL by the linear foot along the face of the rail. When installing BEAM GUIDE RAIL BLOCKOUT to an existing structure, the Department will make payment for the reset of the beam guide rail to provide a smooth transition under RESET BEAM GUIDE RAIL WITH EXISTING POSTS. The Department will measure RESET BEAM GUIDE RAIL WITH EXISTING POSTS, RESET BEAM GUIDE RAIL, DUAL FACED, WITH EXISTING POSTS, RESET MODIFIED THRIE BEAM GUIDE RAIL WITH EXISTING POSTS, and RESET MODIFIED THRIE BEAM GUIDE RAIL, DUAL FACED, WITH EXISTING POSTS along the face of the rail, excluding anchorages and end terminals. The Department will make payment for BEAM GUIDE RAIL POST, ___' LONG by the unit. A unit consists of the length of post beyond 6 feet in length and blockout. The Department will make payment for BEAM GUIDE RAIL POST by the unit including the blockout.
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Source: Standard Specifications for Road and Bridge Construction, 2019 (rev. 2022-12-21) Edition. Pages 337–340 of 651. View official source ↗