Effective with the December 2018 Letting 281 2019 Standard Spec ifications Section 513 Railing
513.1Description
guardrail, or aluminum.
513.2Materials
513.2.1 General
fabricators is availabl e on the department's APL for structures under b ridge secondary metals.
and railing components. Furnish a certificate of compliance for miscellaneous hardware.
ASTM F668, class 2B. Furnish fabric woven of 9-gauge wire in 2-inch diamond pattern mesh with both the top and bottom selvages knu ckled. Also provide PVC-coated t ies and tension bars conforming to ASTM F626.
Hex nuts ...................................................... ...................................................................................... ASTM F594 Hex bolts and anc hor bolts .................................... ............................................................ ASTM F593 , type 316 Washers ....................................................... ..................................................................................... ASTM A240
supplemented by ASTM F2329. 513.2.2 Aluminum Railing
aluminum railing components as follows: Cast aluminum r ailing pos ts ........................................................................................ ASTM B108 , alloy A 444.0 Tubular rail and extrusions ................................... .......................... ASTM B221 , alloy 6061-T6 or alloy 6351-T5 Shims .............................................................................................................................. ASTM B209 , alloy 1100 Plates ......................................................................................................................... ASTM B209 , alloy 6061-T6 Standard aluminum str ucturals hapes ............................................................................................... ASTM B308 Stainless steel c lamping bars ................................. ................................ ASTM A276 , any type in the 300 series Stainless steel cap screws .................................... ...................... ASTM F593 , any type in alloy groups 1, 2, or 3 Aluminum cla mping bars ........................................ ................................................... ASTM B211 , alloy 6061-T6 Cast aluminum washers ......................................... ......................................................... ASTM B26 , alloy 356.0 Aluminum pins ................................................. .......................................................... ASTM B211 , alloy 6061-T6 513.2.3 Steel Railing
Structural steel .............................................. ............................................................................................ 506.2.2 High strengt h bolts ........................................... ......................................................................................... 506.2.5 Steel guard rail ............................................................................................................................................. 614.2 Round structural steel tubi ng for steel pipe railing .......... ..................................................... ASTM A500 grade B Structural steel tubing used with other steel railings .................................................... ASTM A500 grade B or C
- galvanized railing.
513.3Construction
513.3.1 General Revise 513.3.1(1) to clarify shop drawing submittal requirements.
library under 105.2.2 before ordering or fabricating the material. Include the size and location of vent or drainage holes. F or painted railings, state the name of the painting manufacturer and the product name of the tie-coat and top-c oat used along with the color num ber and name on the drawings.
do not follow unevenness in supporting sidew alk or walls. Unless the plans require otherwise, construct the railing with the posts normal to the grade of the structure.
Effective with the December 2018 Letting 282 2019 Standard Spec ifications (3) Unless the plans provide otherwise, set anchor bolts during concrete placement. Locate to provide the correct railing alignment. Ensure that bolts do not project mor e than 3/8 inch beyond the nut after attaching the rail. If setting anchor bolts in holes drilled in concrete for combination or pedestrian railings, use adhesive anchors conforming to 502.2.12 and installed conforming to 502.3.14 .
furnishing railings for adjacen t structures on a dual highway, use the same material and finish.
nuts, bolts, anchor bolts, and wa shers for steel railings unless the plans show stainless steel. 513.3.2 Aluminum Railing
smooth, uniform appearance.
necessary, straighten in a way that causes no injury to the appearance or strength of the metal. The engineer will reject material with sharp kinks and bends.
material from moisture and keep it free from oil, grease, dirt, and contact with dissimilar metals until the railing is complete. Handle, ship, and erect the material i n a manner to preclude any scratching, denting, or other defects that may affect the railing durabilit y or appearance. 513.3.3 Steel Railing
per SSPC-SP6 and galvanize according to ASTM A123. Provide vent holes in members to facilitate galvanizing and provide drainag e. Remove burrs at component edges, corners, and holes; and chamfer sharp edges before galv anizing. Condition thermal cut e dges before blast cleaning by shallow grinding or other cleaning to rem ove hardened surface layer mat erial. Remove steel defects according to AASHTO M 160 before blast cleaning. Remove lumps, projections, globules, and heavy deposits of galvanizing. Do not use water quenching; and do not use chromat e or other passivating treatments.
- Coat exterior surfaces of railing assemblies and inside of rail elements at field erection joints. - Coat inside of rail elem ents at expansi on joints.
salts, oil, dirt, organic matter , and other contaminants. Ensur e tie-coat adhesion by brush blasting the cleaned surface according to SSPC -SP16 to create a slight angul ar surface profile according to manufacturer’s recommendations of 1 mil to 1.5 mils. Remove wet storage stains before blasting according to SSPC-SP16.
approved soft abrasive. Do not use steel shot or angular iron blasting grit. Brush blast the surface to produce a matte silver appearance. Do not fracture the galvanizing finish or remove any dry film thickness. Before applying the ti e-coat, remove visible deposits of oil, grease, and other contaminants according to SSPC-SP1 and remo ve dust, dirt, and loose residue.
galvanized surfaces, according to manufacturer’s recommendations. Apply the top-coat according to manufacturer’s recommendations, m atching the color the plans show. Use a top-coat that is UV resistant and suitable to a mar ine environment. Ensure that the tie and top-coats are of contrasting color and come from the same manufacturer.
the coating system with the coating applier. The review includes a visit to the facility performing the work if the coating manufacturer requests. Provide written conf irmation, from the coating manufacturer to the engineer, that the review t ook place and that issues rai sed were addressed before beginning the coating work under the contract.
Effective with the December 2018 Letting 283 2019 Standard Spec ifications (9) Handle steel railings in conforming to 517.3.1.7.4. Repair or replace railing assemblies if the zinc coating or the two-coat paints ystem is damaged. Store the mate rial off the ground , providing proper ventilation and drainage. Do not field weld, field cut, or dril l without the engineer's written approval.
surface conforming to the manufacturer’s recommendation for the two-coat paint system and conforming to ASTM A780 for the zinc coating. 513.3.4 Screening
framework surfaces marred by fencing installation. 513.3.5 Welding
For steel railing: AWS D 1.5, Bridge Welding Code. For aluminum railing: AWS D 1.2, Structural Welding Code - Alum inum.
513.4Measurement
513.5Payment
Revise 513.5(1) to eliminate the structure number requirement from the LF railing bid items.
items: ITEM NUMBER DESCRIPTION UNIT
513.2001 Railing Pipe LF
513.4000 - 4090 Railing Tubular (type) LF
91 Railing Tubular Screening LF
513.7000 - 7099 Railing Steel (type) LF
513.8000 - 8099 Railing St eel Pedestrian (type) LF
painting.
Effective with the December 2018 Letting 284 2019 Standard Spec ifications Section 514 Floor Drains, Deck Drains, and Downspouts
514.1Description
for railroad structures.
514.2Materials
514.2.1 General
Structural car bon steel ....................................... .......................................................................................... 506.2 Miscellaneous metals .......................................... ........................................................................................ 506.2 Cast Iron ..................................................... ......................................................................... ASTM A48 , class 30 514.2.2 Highway Structures
After fabrication, blast clean and zinc coat steel components according to ASTM A123 as follows: - Structural steel frames and grates. - Steel pipes, clamps, fittings, and brackets for lateral pipin g.
conforming to ASTM D2996 , designation code RTRP-12EA1-2122 or RTRP-11AQ2-2112. Furnish stainless steel brackets for attaching RTRP to the structure.
conforming to 513.2.1 . Unless the plans show otherwise , use 1/2-inch diameter anchor bolts.
concrete used in aprons for dow nspouts. Provide QMP for class I I ancillary concrete as specified in 716. 514.2.3 Railroad Structures
unperforated outlet stubs and do wnspouts of the sizes and gauges the plans show. Ensure that these components are galvanized and fully coated with asphalt accordi ng to AASHTO M190.
514.3Construction
514.3.1 Floor Drains
514.3.2 Adjusting Floor Drains
and apply a shop coat of primer. Touch up areas of damaged primer after installation with a department-approved organic zinc-rich primer.
department-approved ready-mixed l eafing aluminum paint. Brush c lean existing drain grates and apply a similar coat of leafing aluminum paint. 514.3.3 Railroad Structure Deck Drain Systems
conforming to the shop drawings and as the plans show.
place. Ensure that pipe perforations are not plugged with aspha lt. Clear plugged holes without exposing bare metal using engineer-approved methods. 514.3.4 Downspouts
epoxy adhesive following the RTRP pipe manufacturer's installation recommendations. Make connections to steel or cast i ron components as the plans show.
and pipe fittings either pigmented throughout or that have a re sin-rich pigmented exterior coat specifically designed for overcoating fiberglass, as the RTRP m anufacturer recommends.