515-1 Description.
Furnish and install metal pedestrian/bicycle railings, including bullet rails, guiderails and handrails in accordance with the Plans and Standard Plans . Obtain rail components from producers currently on the Department’s Production Facility Listing. Producers seeking inclusion on the list shall meet the requirements of Section 105.
515-2 Materials.
Meet the following requirements: Concrete ................................ .............................. Section 346 Anchor Bolts, Rods, Nuts and Washers* ............Section 962 Adhesive Anchors** ................................ ...........Section 937 Aluminum ................................ ........................... Section 965 Bearing Pads ................................ ............................. 932-2.5 Epoxy Mortar** ................................ .................. Section 926 Steel................................ ................................ .....Section 962 *Do not use expansion anch ors. **Use products listed on the Department’s Approved Product List (APL).
515-3 Construction Requirements .
515-3.1 General: Space posts to clear obstacles without exceeding maximum post
spacing and maintain a uniform spacing with reasonable consistency. Place splices in approximately the same place within a railing section. Railings must be free of burrs and sharp edges and all plug welds ground smooth.
515-3.2 Welds: Nondestructive testing of welds is not required , unless otherwise shown
in the Plans.
515-3.2 1 Aluminum Railing: Welds must be in accordance with Section 965.
Filler material for seal welds, plug welds and bend splices may be ER4303.
515-3.2 2 Steel Railing: Meet the requirements of Section 962, except weld
connections m ust be in accordance with AWS D1.1, Structural Welding Code, using E70XX weld material, unless otherwise shown in the Plans.
515-3.3 Coatings:
515-3.3 1 Aluminum Railing: Coating is not required, unless otherwise shown in
the Plans. Finished product mus t have a smooth uniform appearance. When a colored coating is required, use a fluoropolymer based powder coating system complying with American Architectural Manufacturers Association (AAMA) Specification No. 2605.
515-3.3 2 Steel Railing: Components must be hot-dip galvaniz ed after fabrication
in accordance with Section 962, unless otherwise shown in the Plans . When a colored coating is required, meet the requirements of 649 -4. FY 2023-24 Return to Table of Contents
515-4 Shop Drawings.
Submit shop drawings and obtain approval prior to fabrication in accordance with Section 5. Show project specific geometry (line and grade), post type a nd locations, expansion joint and splice loc ations. Include other project specific details such as tapered end transitions, continuity or transition details post and panel infill type, and anchor bolt general details.
515-5 Installation.
515-5.1 General: Place a 1/8 inch thick bearing pad with dimensions matching the base
plate between the base plate and concrete surface.
515-5.2 Bullet Railings: Install rail posts perpendicular to the profile grade
longitudinally and plumb transversely.
515-5.3 Pedestrian /Bicycle Railings and Guiderails: For locations other than bridges ,
fabricate and install posts plumb. On bridges, f abricate and install posts perpendicular to the profile grade line longitudinally and plumb transversely. Use aluminum shim plat es to make necessary adjustments. Bond stacked shim plates with adhesive bonding material and field trim shim plates to match the foundation contours. Beveled shim plates may be used in lieu of trimmed flat shim plates . If shims greater than 1/2 inch total thickness are required, provide longer anchor bolts. Bolts must be long enough to secure washers and nuts and meet the minimum embedment length. Post tolerance from plumb is plus or minus one inch, measured at 42 inches above the foundation. Rails mus t form a smooth continuous line without hills or dips greater than 1/2 inch between any three posts or side sway greater than 1/2 inch between post assemblies.
515-5.4 Anchoring:
515-5.4 1 General: Secure nuts to a snug tight condition. Tack weld nuts t o stem
or distort bolt threads to prevent nut loosening and removal. Coat damaged galvanizing on bolt stems, nuts, and tack welds in accordance with Section 562.
515-5.4 2 Adhesive Anchors: Install anchors in accordance with Section 416.
515-5.4 3 C-I-P and Thru -Bolt Anchors: Use galvanized hex head anchor bolts.
When thru -bolting is used, coat cut reinforcing steel inside the drilled hole with a zinc galvanizing compound in accordance with Section 562 prior to installing bolts.
515-5.4 4 Embedded Gui derail Posts: Core holes into the foundation concrete,
then clean holes, in accordance with the manufacturer’s instructions. At a minimum, use oil free compressed air to remove loose particles, brush the inside surface to free loose particles, then use compressed air again to remove any remaining particles. Use a Type AB, or F epoxy compound to secure guiderail posts into the cored holes .
515-6 Method of Measurement.
The quantity of railing to be paid for will be the plan quantity, in linear feet, installed and accepted. The quantity will be measured along the centerline of the top rail.
515-7 Basis of Payment.
Price and payment will be full compensation for all work specified in this Section, including all materials, hardware, labor, and incidentals required to complete the installation . For relocation of existing railing, price and payment will be full compensation for the FY 2023-24 Return to Table of Contents removal and reinstallation, including all materials, hardware, labor, and incidentals required to complete the installation . Payment will be made under the following: Item No. 515- 1- Pipe Handrail-Guiderail - per linear foot. Item No. 515- 2- Pedestrian/Bicycle Railing - per linear foot. Item No. 515- 3- Handrail - Retrofit to Existing Railing - per linear foot. Item No. 515- 4- Aluminum Bullet Railings - per linear foot. FY 2023-24 Return to Table of Contents SECTION 520 CONCRETE GUTTER, CURB ELEMENTS, AND TRAFFIC SEPARATOR
520-1 Description.
Construct portland cement concrete curb. Curb will include concrete curb and gutter, concrete traffic separator, valley gutter, special concrete gutter, curb for sidewalk curb ramps and driveways, and any other types of concrete curb not specified in other Sections.
520-2 Materials.
520-2.1 Concrete: Use concrete meeting the requirements of Section 347.
520-2.2 Reinforcement: For all steel reinfo rcement required by the Plans, meet the
requirements of Section 415.
520-2.3 Joint Materials: Meet the requirements of Section 932.
520-2.4 Toll Header Curb Concrete: Use concrete meeting the requirements of
Section 346, Class II.
520-3 Forms.
520-3.1 Form Materials: Construct forms for this work of either wood or metal. Provide
forms that are straight, free from warp or bends, and of sufficient strength, when staked, to resist the pressure of the concrete without deviation from line and grade. For all i tems constructed on a radius, use flexible forms.
520-3.2 Depth of Forms: Ensure that forms have a depth equal to the plan dimensions
for the depth of concrete being deposited against them.
520-3.3 Machine Placement: The Contractor may place these items by machine methods
with the approval of the Engineer provided that the Contractor consistently produces an acceptable finished product, true to line, grade, and cross section.
520-4 Excavation.
Excavate to the required depth, and compact the foundation ma terial upon which these items are to be placed as specified in 120 -9.
520-5 Placing Concrete.
Place the concrete in the forms, and tamp and spade it to prevent honeycombing, and until the top of the structure can be floated smooth and the edges rounded to the radius shown in the Plans.
520-6 Joints.
520-6.1 Contraction Joints: Except for machine p laced items, the Contractor may form
joints by using dummy joints (either formed or sawed) or by using sheet metal templates. If using sheet metal templates, ensure that they are of the dimensions, and are set to the lines, shown in the Plans. Hold templat es firmly while placing the concrete. Leave templates in place until the concrete has set sufficiently to hold its shape, but remove them while the forms are still in place. Saw contraction joints, for machine placed items, unless the Engineer approves a n alternate method. Saw the joints as soon as the concrete has hardened to the degree that excessive raveling will not occur and before uncontrolled shrinkage cracking begins. FY 2023-24 Return to Table of Contents