517BRIDGE AND SIDEWALK HANDRAIL

387

BRIDGE AND SIDEWALK HANDRAIL

517.01Description

This Section shall cover the work of fabricating, furnishing, and installing handrail on structures in accordance with details and at the location shown on the plans, all in conformity with the requirements noted herein or shown on the plans.

517.02Materials

Materials used in fabrication and installation shall conform to the applicable Section of the Specifications that the structure to which the railing is to be attached was constructed, the details shown on the plans, and the following:

53, Grade B; this grade of pipe to include rail elements and post.

with AASHTO M 111.

Class C, with nuts tapped after galvanization in accordance with ASTM A 563 {A 563M}.

galvanized after fabrication in accordance with AASHTO M 111.

Class C, with nuts tapped after galvanization in accordance with ASTM A 563 {A 563M}.

provided in Sections 630 and 864.

steel sidewalk handrail shall meet the requirements specified on the plans.

requirements of Section 501 and the details shown on the plans.

517.03Construction Requirements

Rail shall be erected in accordance with the best construction practices and in conformity with lines, elevations, and other details indicated on the plans. The plans will show construction details and will specify the type or alternate types of handrail to be used. Where the Contractor is permitted to choose the type rail he wishes to use, he shall indicate in the proposal his choice. One type, once selected, shall be used throughout the project.

517.04Method of Measurement

The accepted bridge and sidewalk handrail will be measured in linear feet {meters}, to the nearest 0.1 of a foot {0.1 m}, along the axis of the top rail between extreme limits of the handrail without deductions for laps, posts, or joints. All stair railing, posts, and appurtenances for one stair tower, including pipe railing on the superstructure but not a part of the bridge or sidewalk handrail, installed and accepted complete in place will be measured as one set of stair railing. No measurement or separate payment will be made for post or miscellaneous hardware required for installation of handrail and stair railing, such being considered incidental to the installation of the rail.

517.05Basis of Payment

The number of linear feet {meters} of bridge and/or sidewalk handrail and the number of sets of stair tower handrail, measured as provided above, will be paid for at the contract unit prices of the appropriate pay items complete in place, which shall be payment in full for all materials including rail elements, posts, hardware, and paint; for forms; for constructing, bracing, and erecting; and for all equipment, tools, labor and incidentals necessary to complete the items in accordance with plans and specifications. REPAIR OR RAISING EXISTING BRIDGES 388

517-A * Handrail - per linear foot {meter} 517-B Beam Type Handrail, Type Posts - per linear foot {meter} 517-C Type Railing Stair Railing - per set 517-D Aluminum/Galvanized Steel Sidewalk Handrail - per linear foot {meter} * Galvanized Steel, Galvanized Steel Pipe, Ornamental, or Cast-In-Place Concrete REPAIR OR RAISING EXISTING BRIDGES

520.01Description

This Section shall cover the work of furnishing all materials, tools, equipment, labor, falsework, or cribbing and all incidental items necessary to repair members or portions of an existing bridge or change the elevation of an existing bridge as may be required by the detailed plans. The work shall also include the removal and satisfactory disposal of all waste material, damaged portions replaced, and all falsework and/or temporary bracing, etc.

520.02Materials

Since the majority of the work required under this Section is primarily a work item, materials not to be incorporated into the completed structure shall be of such quality as to serve the needs adequately. However, any material which is to become a part of the completed structure shall meet the requirements of Division 800, Materials, for the respective type of member or part involved.

520.03Construction Requirements

The Contractor shall assemble all materials and equipment required to complete the repairs on any particular member of the bridge and shall adequately strut and brace members which are to be cut to ensure maintaining correct distance between joints and provide temporary load carrying members and supports during such time as members are cut, prior to the cutting of any main member. Prior to beginning work, the Contractor shall submit to the Engineer his plans for bracing main members for approval.

The Contractor shall furnish sufficient equipment of adequate capacity to raise any particular unit of the bridge, or the entire bridge, without injury to same, giving (1) uniform support and bearing at sufficient intervals and (2) adequate falsework, each as approved by the Engineer to support safely the portion of or the entire bridge while being raised until it is set on its new permanent supports. Prior to beginning work the Contractor shall submit to the Engineer (1) his plans for falsework and (2) list of equipment proposed for use. Both of these must be approved before the actual raising operation begins. When raising of a bridge involves a truss structure, the Contractor may be permitted to remove existing trusses from the bridge piers and store them at an approved storage site, provided a satisfactory method of removal, transporting, and re-installation of the trusses is submitted and approved by the Bridge Engineer. In such event the Contractor shall make all necessary arrangement for and furnishing of any storage area. NOTE: Storage areas must be approved by the Engineer, and a site will not be considered for approval unless the proposed site is under the direct control of the Contractor and its location is either on the project or in close proximity thereto.

520.04Method of Measurement

Each existing bridge to be repaired, raised, or bridge having a portion or portions of same to be repaired or raised will be shown on the plans and in the proposal by its station number, and for the purpose of measurement and payment will be considered a complete and separate unit.