Request for bids charlotte county, florida

TS-13 425A INLETS YARD DRAINS:

GENERAL: PVC surface drainage inlets shall include the drain basin type as indicated on the contract drawing and referenced within the contract specifications. The ductile iron grates for each of these fittings are to be considered an integral part of the surface drainage inlet and shall be furnished by the same manufacturer. The surface drainage inlets shall be as manufactured by Nyloplast a divisions of Advanced Drainage Systems, Inc., or prior approved equal.

1. 
   MATERIALS: The drain basins required for this contract shall be manufactured from PVC pipe stock, utilizing a thermo-molding process to reform the pipe stock to the specified configuration. The drainage pipe connection stubs shall be manufactured from PVC pipe stock and formed to provide a watertight connection with the specified pipe system. This joint tightness shall conform to ASTM D3212 for joints for drain and sewer plastic pipe using flexible elastomeric seals. The flexible elastomeric seals shall conform to ASTM F477. The pipe bell spigot shall be joined to the main body of the drain basin or catch basin. The raw material used to manufacture the pipe stock that is used to manufacture the main body and pipe stubs of the surface drainage inlets shall conform to ASTM D1784 cell class 12454. The grates and frames furnished for all surface drainage inlets shall be ductile iron for sizes 8”, 10”, 12”, 15”, 18”, 24” and 30” and shall be made specifically for each basin so as to provide a round bottom flange that closely matches the diameter of the surface drainage inlet. Grates for drain basins shall be capable of supporting H-20 wheel loading for traffic areas or H-10 loading for pedestrian areas. 12” and 15” square grates will be hinged to the frame using pins. Metal used in the manufacture of the castings shall conform to ASTM A536 grade 70-50-05 for ductile iron. Grates shall be provided painted black.
   

2. 
   INSTALLATION: The specified PVC surface drainage inlet shall be installed using conventional flexible pipe backfill materials and procedures. The backfill material shall be crushed stone or other granular material meeting the requirements of class 2 material as defined in ASTM D2321. Bedding and backfill for surface drainage inlets shall be placed and compacted uniformly in accordance with ASTM D2321. The drain basin body will be cut at the time of the final grade. No brick, stone or concrete block will be required to set the grate to the final grade height. For H-20 load rated installations, a concrete ring will be poured under and around the grate and frame. The concrete slab must be designed taking into consideration local soil conditions, traffic loading, and other applicable design factors. For other installation considerations such as migration of fines, ground water, and soft foundations refer to ASTM D2321 guidelines.
   

METHOD OF MEASUREMENT: If a payment item is listed on the Bid Form for work required under this Technical Provision, payment shall be made, per each yard drain satisfactorily completed and accepted, as specified in the Bid Form.

BASIS OF PAYMENT: The quantities, determined as provided above, shall be paid for at the Contract unit price each for inlet shown on the bid form. Such prices and payments shall constitute full compensation for furnishing all materials and completing all the work described herein, shown on plans including all excavation, dewatering, subsoil excavation and replacement material, backfilling around the structure, legal disposal of surplus material, the furnishing and placing of all concrete, reinforcing steel, gratings, frames, covers, baffles and any other necessary fittings.
Bid Item Description Units

425-1-0 Inlet Yard Drain (>10’) Each

TS-14 430 PIPE CULVERTS:

GENERAL: The work specified in this Technical Provision consists of furnishing drainage pipe and mitered end sections, conforming to these specifications and the particular types, sizes and dimensions as shown on the detailed project plans. This work shall include the installation of the pipe and mitered end sections at the locations called for, and furnishing and construction of such joints and connections to existing pipes, catch basins, inlets, manholes, walls, and such, as may be required to complete the work as indicated in the detailed project plans. The Contractor shall, at no additional cost to the County, replace any bedding material that is not acceptable to the County. Bedding material shall be incidental to this bid item. All pipe culvert and storm sewer pipe shall be placed true to the lines and grades given and within a plus tolerance of 0.00' and a minus tolerance of 0.04'.

If the storm sewer pipe will be installed in the rainy season, the County recommends, but does not require, the use of well pointing to keep the storm sewer trenches workable.
Construction of pipe culverts and storm sewers shall conform to the requirements of Section 430 of the Florida Department of Transportation Standard Specifications for Road and Bridge Construction, dated 2010, and Florida Department of Transportation Roadway and Traffic Design Standards, Indexes No. 205, 270, 272, 273, and 280 dated January 2010, except as amended herein.
Proposed storm sewer pipe to be connected to existing structures shall have openings cut into the existing structure without permanently damaging the structure. The opening shall be grouted watertight after installation of the pipe, and the structure shall be restored as approved by the Engineer. The cost of connections to existing structures shall be included in the price bid for the pipe.
Wrap all reinforced concrete pipe joints (round and elliptical) with a geotextile fabric (Mirafi or approved equal). The fabric shall completely encircle the joint, overlap 2%' and extend 2%' beyond both sides of the joint. The unit cost for placement of pipe includes joint wrapping.
The Contractor shall comply with TS-104 N.P.D.E.S. Compliance including, but not limited to, staked silt fence placed at ends of the pipe culvert for erosion control during the shoulder and sodding construction. Filter fabric may be used instead of baled hay or straw, per FDOT Specifications, Section 985. Erosion control measures will be paid for as part of TS-104 N.P.D.E.S. Compliance.
METHOD OF MEASUREMENT: The quantities to be paid for under this Technical Provision shall be the length in linear feet of pipe culvert measured in place, completed and accepted. The measurement shall include the portion of pipe extending into the walls (farthest point) of the inlets, junction boxes, and manholes. Payment will be based upon bid quantity, except as otherwise provided in Section 9-3.2 of the Florida Department of Transportation Standard Specifications for Road and Bridge Construction dated 2010.
BASIS OF PAYMENT: The quantities, determined as provided above shall be paid for at the Contract unit price per linear foot of pipe culvert, of the kinds and sizes shown on the bid form. Price and payment shall be full compensation for all work and materials required. Such prices and payments shall be full compensation for all work and materials described herein and specified in Section 430 of the Florida Department of Transportation Standard Specifications for Road and Bridge Construction, dated 2010, including excavation (in whatever material is encountered), dewatering, removal of unsuitable material, backfilling, and compacting around the culvert, furnishing and laying the pipe culverts, filter fabric wrap, and disposal of surplus materials. Payment for connection of proposed pipes to existing structures and replacement of pavement and base course removed for pipe trenching shall be included in these items.
When the work described as included in the work of this Technical Provision is not specifically listed in the Bid Form the cost of performing that work shall be included in the contract unit prices for the various items of work to which it is incidental. Payment shall be made under one or more of the following items:
Bid Item Description Units

430-175-115 Concrete Pipe Culvert (Round) (15" SD) (RCP) Lineal Foot (LF)

430-175-118 Concrete Pipe Culvert (Round) (18" SD) (RCP) Lineal Foot (LF)

430-175-124 Concrete Pipe Culvert (Round) (24" SD) (RCP) Lineal Foot (LF)

430-175-130 Concrete Pipe Culvert (Round) (30" SD) (RCP) Lineal Foot (LF)

430-175-136 Concrete Pipe Culvert (Round) (36" SD) (RCP) Lineal Foot (LF)

430-175-142 Concrete Pipe Culvert (Round) (42" SD) (RCP) Lineal Foot (LF)

430-175-148 Concrete Pipe Culvert (Round) (48” SD) (RCP) Lineal Foot (LF)

430-175-224 Concrete Pipe Culvert (EIIipt) (0"-24"SD) (RCP) Lineal Foot (LF)

430-175-236 Concrete Pipe Culvert (EIIipt) (25"-36"SD) (RCP) Lineal Foot (LF)

430-175-248 Concrete Pipe Culvert (EIIipt) (37"-48"SD) (RCP) Lineal Foot (LF)

430-PVC-112 Pipe Culvert (Round) (12" SD) (PVC) Lineal Foot (LF)

430-PVC-115 Pipe Culvert (Round) (15" SD) (PVC) Lineal Foot (LF)

430-PVC-118 Pipe Culvert (Round) (18" SD) (PVC) Lineal Foot (LF)

430-982-141 Mitered End Section (Round) (48" SD) Each (EA)

430-984-625 Mitered End Section (EIIipt) (24" SD) Each (EA)

430-984-629 Mitered End Section (Ellipt) (30" SD) Each (EA)

430-984-638 Mitered End Section (EIIipt) (36" SD) Each (EA)

430-PC Pipe Cradle Each (EA)