620.01 659 SECTION 620 – BRIDGE RAILINGS
620.01 Description ................................ ................................ ................... 659
620.02 Materials ................................ ................................ ...................... 659
620.03 Reserved ................................ ................................ ....................... 659
620.04 Construction Methods ................................ ................................ .. 659
620.05 Method of Measurement ................................ .............................. 660
620.06 Basis of Payment ................................ ................................ .......... 660
DESCRIPTION
620.01 Description
This work consists of furnishing and placing railings for bridges as covered by standard designs or as specially detailed, and includes all reinforcing steel, anchor bolts, or insert sle eves as detailed to support the railing. MATERIALS
620.02 Materials
For the respective type of railing, provide materials as follows: Concrete Parapet with Structural Tubing .......................... STD-11-1 Concrete Parapet ................................ ......... STD-1-1 or STD-1-1SS Concrete Rail ................................ .................... STD-7-1, STD-11-2
620.03 Reserved
CONSTRUCTION REQUIREMENTS
620.04 Construction Methods
A.Metal Railing Construct steel or aluminum tubing according to the details shown on the Plans and the requirements specified in 602. Where painting is required, meet the requirements of 603.06, unless otherwise specified. No 620.05 660 painting will be required for aluminum or galvanized railing. Carefully adjust metal railing before bolting connection s to ensure proper matching at abutting joints and correct alignment throughout the railing length. Set rail posts plumb, unless otherwise shown on the Plans.
B.Concrete Parapet and Concrete Railings After all falsework has been struck, construct concrete p arapet and concrete railings as specified in 604. Exercise care to secure smooth and tight-fitting forms that can be rigidly held to line and grade and removed without damaging the concrete. Construct all moldings, panel work, and bevel strips as shown on the Plans with neatly mitered joints. All corners in the finished work shall be true, sharp, and clean -cut and shall be free from cracks, spalls, or other defects. Give all exposed surfaces a Class II or Applied Textured Finish as specified in 604.21. COMPENSATION
620.05 Method of Measurement
The Department will measure bridge railing of the type specified, in place, by the linear foot, overall dimensions.
620.06 Basis of Payment
The Department will pay for accepted quantities at the contract prices as follows: Item Pay Unit Aluminum Railing (Description) Linear Feet Steel Railing (Description) Linear Feet Concrete Parapet (Description) Linear Feet Concrete Para pet with Structural Tubing Linear Feet Timber Railing (Description) Linear Feet Concrete Railing Linear Feet Such payment is full compensation for furnishing all materials and constructing the railing of the type specified complete in place. 621.01 661 SECTION 621 – TEMPORARY STRUCTURES
621.01 Description ................................ ................................ ................... 661
621.02 Co nstruction ................................ ................................ ................. 661
621.03 Method of Measurement ................................ .............................. 662
621.04 Basis of Payment ................................ ................................ .......... 662
DESCRIPTION
621.01 Description
This work consists of constructing, maintaining, removing, and disposing of temporary structures and temporary shoring. CONSTRUC TION REQUIREMENTS
621.02 Construction
Construct all temporary structures at the location and to the dimensions, grades, and load capacity shown on the Plans or in the Contract, or in accordance with drawings prepared by the Contractor and approved by the Engineer. Alternate design and details prepared by the Contractor must be equivalent to the design and details furnished by the Department. Prepare and submit alternate designs and details as specified in 105.02. Unless other wise provided on the Plans or in the Contract, maintain temporary structures until the completion of the Contract or the opening of the permanent structure. The maintenance of all temporary structures shall include their replacement in case of partial or complete failure. The Department reserves the right, in case of the Contractor’s delay or inadequate progress in making repairs and replacement, to furnish such labor, materials and supervision of the work as may be necessary to restore the str ucture for proper movement of traffic. The Department will consider the entire expense of such restoration and repairs a part of the cost of the temporary structure and, where such expenditures are incurred by the Department, will charge them to the Contr actor.
Source: Tennessee Standard Specifications for Road and Bridge Construction, 2021 Edition. Pages 668–669 of 1,072.