517.07 438 Do not scratch, dent, or cause other damage to railings that may affect the durability or appearance of the railing. Use galvanized steel anchor bolts and hexagon nuts conf orming to 711.02. Coat the entire projecting portion of anchor bolts and fill the space between the bolts and post base with an aluminum -impregnated caulking compound. Where aluminum contacts concrete or stone masonry, thoroughly coat the contact surfaces with an aluminum -impregnated caulking compound or with a heavy asphalt material paint pigmented with aluminum powder or paste thereby providing an aluminum appearance. Where aluminum or aluminum shims contacts different metal, thoroughly coat the contact s urface with an aluminum -impregnated caulking compound or place a synthetic rubber impregnated fabric gasket between the metals. Weld only where shown on the plans using inert gas shielded metal -arc or tungsten -arc method without flux, or by other approved methods.
517.07 Method of Measurement. The Department will measure Railing by the
number of feet (meters) of railing including end posts. If deep beam guardrail is used, the Department will measure the length of railing between the first posts off the brid ge excluding the first posts off the bridge. If hand rails or tubular backup rails are used, the Department will not measure any portions extending beyond the first posts off the bridge. If twin steel tube bridge railing is used, the Department will measur e the length of the railing between the second post off the bridge including the second post.
517.08 Basis of Payment. The cost of hand rails or tubular backup rails
extending beyond the measured limits are included for payment in the unit price bid for th e measured length. The Department will pay for accepted quantities at the contract price as follows: Item Unit Description 517 Foot (Meter) Railing (___) ITEM 518 DRAINAGE OF STRUCTUR ES
518.01 Description
518.02 Fabrication
518.03 Materials
518.04 General
518.05 Porous Backfill
518.06 Pipe
518.07 Scuppers
518.08 Excavation
518.09 Method of Measurement
518.10 Basis of Payment
518.01 Description. This work consists of constructing drainage systems. 518.02
439 518.02 Fabrication. Fabricate scuppers according to Item 513. Select a fabricator that is at least pre -qualified at level SF. The Department will base final acceptance of all fabricated members on the Engineer’s approval that the fabricated items can be successfully incorporated into the structures. Submit mill test reports for structural steel, steel castings, bronze, and sheet lead certified according to 501.06.
518.03 Materials. Furnish materials conforming to:
Scuppers, structural steel and cast steel ....................... 513 Metal pipe ................................ ................................ .... 707 Plastic pipe ................................ ................. 707.33, 707.45 Other metal s ................................ ................................ . 711 Geotextile fabric, Type A ................................ ....... 712.09 Reinforced thermosetting resin pipe ....................... 707.80 Furnish pipe specials of a grade at least as high as the type of pipe specified. Furnish porous backfill consisting of gravel, stone, or air -cooled blast furnace slag, with a N o. 57 size gradation according to Table 703.01 -1. The sodium sulfate soundness loss shall not exceed 15 percent. Furnish ACBF S conforming to Supplement 1027.
518.04 General. As shown on the plans, connect all parts to new or existing
sewers or ot her outlets. When installing to superstructure, take into account the deflection of spans under full dead load.
518.05 Porous Backfill. Place porous backfill as shown on the plans. When not
shown on the plans , place backfill at least 2 feet (0.6m) thick be hind the full length of abutments, wing walls, and retaining walls. Measure the thickness of porous backfill normal to the abutment or wall face. The Contractor may leave undisturbed rock or shale within 18 inches (0.5 m) of the abutment or wall. Place 2 ft³ (0.23 m³) of bagged No. 3 aggregate at each weep hole to retain the porous backfill. Place the porous backfill for the full width of the trench and extend it to the bottom of the approach slab or base, as shown in the plans. Place porous backfill in loo se lifts not to exceed 12 inches. Run a plate compactor or tamper over the top of each lift for consolidation of approximately 85% of original layer thickness. If placed in loose lifts greater than 12 inches, flood the porous backfill at the appropriate mo isture content for consolidation of approximately 85% of original layer thickness .
518.06 Pipe. For drain pipe leading down from the superstructure, use either
galvanized steel pipe, 748.06, or plastic pipe, 707.45, or reinforced thermosetting resin pipe, 707.80. Provide specials, elbows, tees, wyes, and other fittings essential for a complete and satisfactory installation of the same material and quality as the pipe. Construct watertight joints of adequate strength. In steel pipe, weld joints or use clamp -type couplings having a ring gasket. In plastic pipe, make joints according to the applicable ASTM standard. In reinforced thermosetting resin pipe, make joints according to manufacturer guidelines and procedures. Securely fasten the pipe to the structure with hanger or clamp assemblies that are galvanized according to 711.02.