611.01 600 SECTION 611 – MANHOLES, CATCH BASINS, INLETS, AND PIPE END WALLS
611.01 Description ................................ ................................ ................... 600
611.02 Materials ................................ ................................ ...................... 600
611.03 Reserved ................................ ................................ ....................... 601
611.04 Preliminary Work ................................ ................................ ......... 601
611.05 Structure Excavation, Foundation Preparation, and Backfill ....... 601
611.06 Concrete Construction ................................ ................................ .. 601
611.07 Inverts ................................ ................................ .......................... 602
611.08 Reserved ................................ ................................ ....................... 602
611.09 Inlet and Outlet Pipes ................................ ................................ ... 602
611.10 Castings and Fittings ................................ ................................ .... 602
611.11 Final Cleanup ................................ ................................ ............... 603
611.12 Method of Measurement ................................ .............................. 603
611.13 Basis of Payment ................................ ................................ .......... 604
DESCRIPTION
611.01 Description
This work consists of constructing manholes, catch basins, inlets, and pipe end walls at the locations shown on the Plans. The work includes furnishing and installing incidental appurtenances and connections to pipe and other structures as may be necessary to complete the construction as shown on the Plans or as directed by the Engineer. MATERIALS
611.02 Materials
Provide materials as specified in: Steel Bar Reinforcement ................................ ........................ 907.01 Structural Steel ................................ ................................ ....... 908.01 Gray Iron Castings ................................ ................................ . 908.07 Precast Manholes and C atch Basins ................................ ....... 921.10 611.03 601 Manhole Steps ................................ ................................ ....... 921.11 For cast-in-place Portland cement concrete, use Class A or when a higher strength concrete is specified in the Standard Drawings use Class X concrete. Manufacture, place, and cure structural concrete as specified in 604. Use bolts, anchors, frames, a nd hangers for castings and plates as approved by the Engineer. The Contractor may use either the manhole and catch basin sections detailed on the Plans or may substitute comparable sections of cast -in-place concrete or precast reinforced concrete, as may be applicable. When a substitution is proposed for a manhole or catch basin section detailed on the Plans, construct the substitute section in accordance with the applicable Standard Drawing as approved by the Engineer. If the Department has no Standard Drawing of the substitute section, submit shop drawings of the revised section to the Engineer for approval prior to construction. After obtaining the necessary approval, furnish the Engineer an electronic reproducible design file.
611.03 Reserved
CONSTRUCTION REQUIREMENTS
611.04 Preliminary Work
Perform Clearing and Grubbing, Removal of Structures and Obstructions, Excavation and Undercutting, and Embankment Construction as specified in 201, 202, 203, and 205, respectively.
611.05 Structure Excavation, Foundation Preparation, and Backfill
Perform Structure Excavation, Foundation Preparation, and Backfi ll as specified in 204. Do not backfill or allow traffic on cast -in-place sections until 7 calendar days after the representative test specimens reached the required compressive strength.
611.06 Concrete Construction
Perform all concrete construction as specified in 604. 611.07 602 611.07 Inverts Construct inverts of Class A, or when a higher strength concrete is specified in the Standard Drawings use Class X concrete, to conform to the sh apes shown on the Plans and to cause the least possible resistance to flow. The shape of the inverts shall conform uniformly to inlet and outlet pipes. Provide a smooth and uniform finish.
611.08 Reserved
611.09 Inlet and Outlet Pipes
Extend inlet and outlet pipes through the walls of manholes, catch basins, and inlets for a sufficient distance beyond the outside surface to allow for connections, but cut the pipes off flush with the wall on the inside surface, unless otherwise directed. Construct the concrete or brick and mortar around the pipes to prevent leakage and to form a neat connection.
611.10 Castings and Fittings
Handle castings and fittings in a manner that will prevent damage . The Engineer will reject damaged castings and fittings. Place all castings and fittings in the positions shown on the Plans or as directed by the Engineer and set true to line and grade. If castings are to be set in concrete or cement mortar, place all anchors or bolts in position before placing the concrete or mortar. Ensure that the casting will not be disturbed until the mortar or concrete has set. When castings are to be placed upon previously constructed masonry, bring the bearing surface of masonr y true to line and grade to present an even bearing surface that will allow the entire face or back of the casting to come in contact with the masonry. Set castings in mortar beds or anchor to the masonry as shown on the Plans or as directed by the Engine er. Set castings to be firm and snug and to not rattle. 611.11 603 611.11 Final Cleanup Dispose of all excess or unsuitable material as directed by the Engineer. Perform final cleanup as specified in 104.10. COMPENSATION
611.12 Method o f Measurement
A.Manholes, Catch Basins, and Inlets When the Bid Schedule indicates that manholes, catch basins, and inlets will be measured by the unit (per each), the Department will measure as follows:
1.Manholes will be measured by the unit, per each, for the various types, diameters, and ranges of depth as shown on the Plans.
2.Catch basins will be measured by the unit, per each, for the various types and ranges of depth as shown on the Plans.
3.Inlets will be measured by the unit, per each, fo r the various types shown on the Plans.
B.Components of Manholes, Catch Basins, Inlets, and End Walls When the Bid Schedule contains items for various components of manholes, catch basins, inlets, and end walls, the Department will measure as follows:
1.Portland cement concrete and steel bar reinforcement will be measured in accordance with 604.30.
2.Structural steel and gray iron castings will be measured by the computed weight based on the dimensions shown on the Plans and deducting for open holes. To this weight the Department will add 5% allowance for fillets and overruns. The Department may substitute scale weights for computed weights of small complex parts for which accurate computations would be difficult. 611.13 604 3. Steps will not be measured and paid for directly but will be considered incidental to the pay items of other materials with which the structure is constructed.
4.Unless otherwise shown on the Plans, the Department will not measure structure excavation and will c onsider it incidental to other items of construction. When the Plans provide for direct payment for Structure Excavation, the Department will measure and pay in accordance with 204.
611.13 Basis of Payment
The Department wi ll pay for accepted quantities at the contract prices as follows: Item Pay Unit Manholes __ to __ Depth Each Junction Box (Description) Each Catch Basins, Type __, __ to __ Depth Each Spring Drain Box (Description) Each Bridge Edge Drain (Size) Each Such payment is full compensation for furnishing all materials, equipment, tools, labor, and incidentals necessary to complete the item. When the Contractor makes approved substitutions for the manhole and catch basin sections detailed on the Plans, the Department will pay for accepted quantities based on the prices bid for the quantities of the items replaced by the substitute sections. 612.01 605 SECTION 612 – STONE MASONRY
612.01 Descripti on ................................ ................................ ................... 605
612.02 Materials ................................ ................................ ...................... 605
612.03 Classification ................................ ................................ ............... 605
612.04 Reserved ................................ ................................ ....................... 606
612.05 Prelimin ary Work ................................ ................................ ......... 606
612.06 Structure Excavation, Foundation Preparation, and Backfill ....... 606
612.07 Preparing Stone ................................ ................................ ............ 606
612.08 Laying Stone ................................ ................................ ................ 607
612.09 Poin ting ................................ ................................ ........................ 609
612.10 Arch Rings ................................ ................................ ................... 610
612.11 Copings, Top Walls, Bridge Seats, and Back Walls .................... 611
612.12 Finishing and Final Cleanup ................................ ........................ 611
612.13 Method of Measurement ................................ .............................. 612
612.14 Basis of Payment ................................ ................................ .......... 612
DESCRIPTION
612.01 Description
This work consists of constructing stone masonry structures and stone masonry portions of concrete, steel, timber, and composite structures, at the locations shown on the Plans or as directed by the Engineer. MATERIALS
612.02 Materials
Provide materials as specified in: Masonry Mortar ................................ ................................ ..... 912.03 Masonry Stone ................................ ................................ ....... 921.07
612.03 Classification
Stone Masonry will be classified under the following designations:
Source: Tennessee Standard Specifications for Road and Bridge Construction, 2021 Edition. Pages 609–613 of 1,072.