613.01 613 SECTION 613 – BRICK MASONRY
613.01 Description ................................ ................................ ................... 613
613.02 Materials ................................ ................................ ...................... 613
613.03 Reserv ed ................................ ................................ ....................... 614
613.04 Preliminary Work ................................ ................................ ......... 614
613.05 Structure Excavation, Foundation Preparation, and Backfill ....... 614
613.06 Mortar ................................ ................................ .......................... 614
613.07 Laying Brick ................................ ................................ ................ 614
613.08 Copings, Tops of Walls, Bridge Seats, and Back Walls .............. 615
613.09 Finishing and Final Cleanup ................................ ........................ 616
613.10 Method of Measurement ................................ .............................. 616
613.11 Basis of Payment ................................ ................................ .......... 617
DESCRIPTION
613.01 Description
This work consists of constructing brick masonry s tructures, and the brick masonry portions of concrete, steel, timber, and composite structures, at the locations shown on the Plans. MATERIALS
613.02 Materials
Provide materials as specified in: Building Brick (Kind and Grade as Specified ) ...................... 912.01 Sewer Brick ................................ ................................ ........... 912.02 Masonry Mortar ................................ ................................ ..... 912.03 Brick Paving Units ................................ ................................ . 912.05 613.03 614 613.03 Reserved CONSTRUCTION REQUIREMENTS
613.04 Preliminary Work
Before beginning work on brick mas onry, perform all necessary Clearing and Grubbing, Removal of Structures and Obstructions, Excavation and Undercutting, and Embankment Construction as specified in 201, 202, 203, and 205, respectively.
613.05 Structure Excavation, Foundation Preparation, and Backfill
Perform Structure Excavation, Foundation Preparation, and Backfill as specified in 612.06.
613.06 Mortar
Mortar for brick masonry shall meet 912.03.
613.07 Laying Brick
Do not construct brick masonry in freezing weather or when the bricks contain frost. For exposed surfaces, corners, and similar areas, use brick selected from brick that has been approved for color and uniformity. Immediately before laying brick, thoroughly clean and moisten with water both the bricks and the bed that is to receive the brick. Lay brick in freshly made mortar, true to the lines and grades shown on the Plans or as directed by the Engineer. Arrange headers and stretchers to thoroughly bond the masonry and, unless otherwise indicated or directed, alternate heade rs and stretchers with consecutive courses breaking joints. Lay brick in courses to be thoroughly bonded with the joints completely filled with mortar. Lay the courses continuously, and with consecutive courses breaking joints. Neatly strike face joints, using a weather joint. Finish all joints properly as 613.08 615 the laying of brick progresses and to be not less than ¼ inch nor more than ½ inch in thickness. Do not use spalls or bats except for shaping around irregular openings or when unavoidable to finish out a course, in which case, place a full brick at the corner and the bat in the interior of the course. Use filling materials for the interior of the walls that are of the same quality as used in the face of the unit, unless otherwise shown on the Plans or d irected by the Engineer. Neatly plaster the surface of brick masonry, against which embankment or backfill is to be placed, with mortar to a thickness of not less than ½ inch, and finish the mortar to a true and uniform surface. Protect the mortar and kee p it wet for 48 hours after completion. Keep the exposed surface of brick free from mortar stains. Immediately after laying, thoroughly clean face brick of all mortar stains. Construct weep holes of such shape and size as shown on the Plans or as directed by the Engineer. Space weep holes not over 10 feet center to center and locate them at the lowest point where free outlet may be obtained, unless otherwise directed by the Engineer. Protect the inlet end of weep holes by placing a wire basket 1 foot by 1 foot by 1 foot filled with coarse aggregate size 7, 8, 57, or 68 immediately over or behind the holes as directed. In case any brick is moved, or the joints break after laying, remove the brick, clean off the mortar from the brick, bed, and joints, and r elay the brick in fresh mortar. Protect brick masonry and keep it wet for a period of 48 hours after laying brick. Ensure that all brick masonry presents an even, uniform, neat, and workmanlike appearance.
613.08 Copings, Tops of Walls, Bridge Seats , and Back Walls
Construct copings, tops of walls, bridge seats, back walls, and similar features to the lines, grades, cross -sections, and of the material shown on the Plans or as directed by the Engineer. For copings, tops of walls, bridge seats, back walls, and similar features, to be constructed of concrete, use Class A concrete conforming to the requirements of 604, unless otherwise shown on the Plans or directed by the 613.09 616 Engineer. Construct concrete copings and similar features in sections from 5 to 10 feet long and of such widths and thicknesses as shown on the Plans or as directed by the Engineer. The sections may be cast -in-place or precast and set in place in full mortar beds. Finish concrete as specified in 604.22. For copings, tops of walls, bridge seats, back walls, and similar features to be constructed of stone, use s tone masonry of the classifications shown on the Plans or as directed by the Engineer. Construct stone copings of the design and thickness shown on the Plans, using carefully selected large stones of the length, width, and thickness shown on the Plans. T he stone shall have a uniform surface and be pitched to line along the top and bottom edge. For all stone, comply with the requirements specified in 612.
613.09 Finishing and Final Cleanup
Clean brick masonry that is to be exposed in the completed construction of all mortar, scars, and blemishes. The exposed surface shall present a surface having the natural color of the brick. Perform final cleanup as specified in 104.10. COMPENSATION
613.10 Method of Measurement
The Department will measure brick masonry by the 1,000 brick, as indicated on the Plans, placed within the lines shown on the Plans and typical cross - sections or as established by the Engineer. When the Department measures brick masonry by the cubic yard , the volume will include the mortar. When the Department measures brick masonry by the 1,000 brick, the mortar will not be considered. If fractional parts of brick , of ½ brick or greater , are used, the Department will include these parts in the measurements; if less than ½ brick, they will not be included. The Department will measure c oncrete used in reinforcing foundations and in copings, tops of walls, bridge seats, and back walls in accordance with 604.30. 613.11 617 The Department will measure c opings, tops of walls, bridge seats, and back walls constructed of stone masonry in accordance with 612.13. Unless otherwise shown on the Plans, the Department will not measure structure excavation, and will consider the work incidental to other items of construction. When the Plans provide for direct payment for Structure Excavation, the Department will make measurement and payment in accordance with 204.
613.11 Basis of Payment
The Department will pay for accepted quantities of Brick Masonry at the contract unit price per 1,000 brick, whichever unit is called for on the Plans or in the Contract, complete in place. 615.01 618 SECTION 615 – PRECAST/PRESTRESSED CONCRETE BRIDGE MEMBERS
615.01 Description ................................ ................................ ................... 618
615.02 Prestressing Methods ................................ ................................ ... 619
615.03 Materials ................................ ................................ ...................... 619
615.04 Equipment ................................ ................................ .................... 620
615.05 General ................................ ................................ ......................... 620
615.06 Forms ................................ ................................ ........................... 620
615.07 Stressing Requirements – General ................................ ............... 621
615.08 Pretensioning Procedure ................................ ............................... 622
615.09 Proportioning and Mixing of Concrete ................................ ........ 623
615.10 Handling, Placing, and Consolidating Concrete ........................... 625
615.11 Removing Forms, Finishing, and Curing ................................ ..... 626
615.12 Post -Tensioning Procedure ................................ .......................... 628
615.13 Combined Prestressing and Post -tensioning ................................ 629
615.14 Transfer of Stress ................................ ................................ ......... 629
615.15 Handling and Installation ................................ ............................. 630
615.16 Grouting ................................ ................................ ....................... 631
615.17 Tolerances ................................ ................................ .................... 631
615.18 Method of Measurement ................................ .............................. 632
615.19 Basis of Payment ................................ ................................ .......... 633
DESCRIPTION
615.01 Description
This work consists of manufacturing precast/prestressed structural concrete members and hauling, storing, and placing the precast/prestressed members on a prepared substructure. Fabricate these items in plants that have been certified by the Precast/Prestressed Concrete Institute (PCI). The fabricator shall be certified by PCI for the product that it will be manufacturing and supplying to the State or the Contractor.