462 SECTION 617 RAILINGS
617.1 -DESCRIPTION : This work shall consist of furnishing, constructing, and erecting a pipe railing or other fabricated metal railing of the type specified, on a bridge, wall, or other structure, in accordance with these Specifications and in reasonably close conformity with the lines, grades, dimensions, and sections shown on the Plans.
617.2 -MATERIALS : Materials shall conform to the applicable requirements of Division 700. All ferrous pipe used for railing shall be wrought iron, and fittings for pipe railing shall be in accordance with the requirements for malleable iron castings in subsection 709.10. Caulking compounds, for use on surfaces where aluminum is in contact with other metal except stainless steel, shall be as approved by the Engineer. Elastomeric bearing pads shall conform to the requirements of subsection 715.15. Mortar for grouting anchor bolts shall be of the following proportion by weight: one part nonshrink ag gregate, one part silica sand (702.1), and one part Type I cement (701.1).
CONSTRUCTION METHODS
617.3 -LINE AND GRADE : The line and grade of railing shall conform to that shown on the Plans and not follow any unevenness in the structure. All railing posts shall be vertical.
617.4 -PIPE RAILING : Pipe railing shall be built in accordance with details shown on the Plans.
617.5 -FERROUS METAL RAILING : 617.5.1 -Fabrication and Erection: Fabrication and erection of ferrous metal railing shall be done in accordance with the applicable requirements of section 615. In the case of welded railing, all exposed joints shall be finished by g rinding or filing, after welding, to provide a neat appearance. Railings shall be carefully adjusted prior to fixing in place to insure proper matching at abutting joints and correct alignment and camber throughout their length. The railing shall be so fabricated as to allow for minor adjustments in both horizontal and vertical directions. In the bottom of the sealed end, a ½ inch hole for drainage shall be provided.
617.5.2 -Painting: Ferrous metal railing shall be given one shop coat of paint an d two coats of paint after erection. Painting shall conform to the requirements for painting metal structures in 615. No painting is required on railing or posts where galvanizing is specified on the Plans.
617.6 -ALUMINUM RAILING : 617.6.1 -Fabrication and Erection: Post base castings shall be accurately set and the bolts tightened to obtain full bearing on the base. Additional aluminum shims shall be furnished to permit adjustment in the field to assure compliance with the grade and alignment shown on the Plans.
463 Material ½ inch thick or less may be sheared, sawed, or milled. Material over ½ inch thick shall be sawed or milled. Cut edges shall be true, smooth, and free from excessive burrs or ragged breaks. Reentrant cuts shall be filleted by drilling prior to cutting. Flame cutting will not be permitted. Welding will not be permitted except as specifically called for in the Contract. Rivet or bolt holes shall be drilled or subpunched 3/16 inch smaller t han the nominal diameter of the fastener and reamed to size. The finished diameter of holes shall not be more than seven percent (7%) greater than nominal diameter of the fasteners. Anchor bolt holes and slotted bolt holes to take care of expansion shall be provided as called for on the Plans.
617.6.2 -Protection: Where aluminum alloys, except anchor bolts, come in contact with materials other than aluminum and stainless steel, the surfaces in contact shall be protected as follows:
when in contact with other metals except stainless steel. ii. Elastomeric bearing pads shall be placed under each post. The pad shall cover the entire contact area between the post and conc rete and shall be neatly trimmed to the shape of the post base. The pads shall meet the requirements of Section 715.15.
617.6.3 -Finishing: After the concreting has been completed, the aluminum bridge railing shall be thoroughly cleaned, removing any a ccumulation of oil, grease, dirt, or other foreign materials. An approved solvent cleaner may be used. Where mechanical means are used to remove stains, grease, minor scratches, etc., the resulting finish shall be uniform in appearance over the entire tu be. Tubing for a single structure shall present the same uniform finish at time of final acceptance. Finished tubing shall be free from grease and stains, gouges, dents and burrs, and shall have a minimum of rubs, scratches, and minor extrusion marks fro m the dies.
617.7 -GROUTING OF ANCHOR BOLTS : Where anchor bolts for railing brackets or posts on concrete are not cast -in-place during the original pour, they shall be grouted in place with mortar as specified in subsection 617.2 .
617.8 -METHOD OF MEASUREMENT : The quantities of work done will be measured by the linear foot of "Pipe Railing", "Ferrous Metal Railing", or "Aluminum Railing", as the case may be, complete in place and accepted, which will be determined by the overall length as shown on the Plans, or as authorized by the Engineer. When metal railing is used with concrete posts, the pay length for the railing will be the sum of all the net lengths between posts. Reinforcing steel required in concrete posts for "Ferrous Metal Railing" will be measured and paid for as provided in section 602. Concrete posts for "ferrous Metal Railing" will be measured and paid for as provided in
617.9 -BASIS OF PAYMENT : The quantities, determined as provided above, will be paid for at the contract unit prices bid for the items listed below, which prices and payments shall be full compensation for furnishing all the materials and doing all the work described in a workmanlike and acceptable manner, including all the labor, tools, equipment, supplies, and incidentals necessary to complete the work.
464
617.10PAY ITEMS :
ITEM DESCRIPTION UNIT 617001 -* Pipe Railing Linear Foot 617002 -* Ferrous Metal Railing Linear Foot 617003 -* Aluminum Railing Linear Foot
* Sequence number
SECTION 6 18-BLANK
465 SECTION 619 WATERPROOFING
619.1 -DESCRIPTION : This work shall consist of waterproofing concrete retaining walls, abutments, earth -filled arches, and concrete decks, either in the form of dampproofing (primers with bituminous paint coat) or membrane waterproofing ( primers with bituminous membrane fabric, with or without protection course) as specified on the Plans. Dampproofing shall consist of a primer and two coats of bituminous materials. Membrane waterproofing shall consist of a primer, two layers of fabric, and three moppings of hot bituminous material. The work shall be done in accordance with the Specifications and as shown on the Plans.
619.2 -MATERIALS : The materials shall conform to the requirement of the several Su bsections of Division 700 of these Specifications as follows:
MATERIAL SUBSECTION TYPE Dampproofing Agent 705.4, 705.11
705.7SS-1 or SS -1h
CSS-1 or CSS -1h Dampproofing Primer 705.4, 705.11 or 705.8 SS-1 or SS -1h CSS-1 or CSS -1h Hot-Poured Elastic Type Concrete Joint Sealer 708.3 Membrane Waterproofing 705.8 Membrane Waterproofing 705.7 Reinforcing Steel 709.3 Waterproofing Fabric 715.8
When the dampproofing agent is SS -1, the primer shall be SS -1 to which shall be added a maximum of 15 percent (15%) water by weight. Membrane fabric shall be stored in a dry, protected place. The rolls shall not be stored on end.
CONSTRUCTION METHODS
619.3 -PREPARATION OF SURFACE : Before applying the primer coat, all rod holes and other voids shall be pointed, and all projections, loose material, and excess dust shall be removed from the surface. When emulsion is used, the surface may be damp. When asphalt is used, the surface shall be thoroughly dry. Should the surface be damp, it shall be covered with a two ( 2) inches layer of hot sand which shall be allowed to remain for two hours, after which it shall be swept back, uncovering sufficient surface for beginning of work, and the operation repeated as the work progresses. For surfaces too steep to hold sand, other satisfactory methods to produce a dry surface shall be used. No waterproofing shall be done in wet weather or when the temperature is below 35° F, without written authority of the Engineer.