Attachment 1 - Wayne NF Vault Toilet Specifications.docx

General Specifications for Eastern Region Vault Toilet Building Contracts

PART 1 – GENERAL

1. Scope:

1.1. Removal of two existing vault toilets on the Athens District – Marietta Unit, furnishing and installation of two prefabricated precast concrete vault toilet buildings that meet ADA accessibility standards.

1.2. Excavation for building placement and filling void areas from demolition. Backfilling of the new buildings and various other site work as described herein.

2. Manufacturers:

2.1. Manufacturer shall be CXT Inc., Idaho, Texas and West Virginia - 412-398-4286; Huffcutt Concrete, Wisconsin – 715-723-7446; Missoula Concrete Construction, Montana – 406-549-9682. or pre-approved equal. The salient characteristics used to determine an “or equal” are listed in Part 2 – Building and Installation Specifications. Appearance shall be consistent with the models identified for each bid item. Appearances that differ from the identified model may be submitted as alternate options. At his/her sole discretion, the Contracting Officer will consider whether those alternate options meet the desired appearance for use at a national forest site.

3. Site Visit:

3.1. Bidders are urged and expected to inspect the sites where the work will be performed and to satisfy themselves regarding all general and local conditions that may affect the cost of contract performance, to the extent that the information is reasonably obtainable. Some of the sites are only open seasonally, so request for access from the local Ranger District Office may be necessary. In no event shall failure to inspect the site constitute grounds for a claim after Contract award.

4. Measurement of Work and Payment:

4.1. Payment will be made according to the items listed on the bid schedule. No other payments will be made.

5. Site Safety:

5.1. Work under this contract is located at national forest recreation sites. Facilitate all work to ensure the safety of the public and government employees. Provide signage, fencing, barriers, etc. as required to ensure safety.

5.2. The contractor shall have all underground utilities located prior to excavation in accordance with state law.

PART 2 – BUILDING AND INSTALLATION SPECIFICATIONS

1. Vault:

1.1. There shall be one vault for each toilet riser.

1.2. All Interior vault surfaces shall be sealed to prevent leaking and absorption of odors into the material used to construct the vault. If the building floor slab is the top of the vault, then the underneath side of the floor slab (top interior of the vault) shall be sealed to prevent odor absorption. Sealer shall consist of a deep penetrating, high alkali resistant, low volatility product. Sealer shall be as specified by CXT or as approved by the engineer.

1.3. The vault shall have a black Interior to help prevent the user from seeing the waste when looking down the toilet riser. Do not use bituminous materials for coating the vault due to that material being consumed by the bacteria that will be found in the vault once in use. Coating shall be as specified by CXT or as approved by the engineer.

1.4. The vault shall have a bottom slope of 1 Inch per ft. from under the toilet riser out to the outside cleanout area so that the waste can be more thoroughly removed.

1.5. The vault shall have a 24-lnch diameter (minimum) lightweight manhole cover Installed to the rear or side of the building. The manhole cover must be sealed to prevent air and water from entering the vault. The manhole cover shall be lockable with a padlock and raised, with the surrounding concrete sloped away using a minimum slope of 1/2 Inch per ft.

1.6. The size of the vault shall be 1,000 gallons.

1.7. The depth of the vault shall be no deeper than 4-1/2 to 5 ft.

2. PCI Certification Requirements:

2.1. Precast concrete manufacturing plant shall be Precast/Prestressed Concrete Institute (PCI)certified. Minimum certification shall be C1A. Certification shall be provided to the engineer for review.

2.2. Known qualifying manufacturers are listed in Part 1, 2.1.

3. Building Interior Floor Surface:

3.1. The floor shall be completely sealed to prevent any staining or odor absorption. Sealant shall be as specified by CXT or submitted to the engineer for review and approval.

3.2. The floor shall have a non-slip surface only in the walkway area, per manufacturer’s specifications.

3.3. The wall to floor surfaces shall have a large radius coving (4 to 6 Inches) and all 90° corners shall be rounded.

3.4. The floor shall evenly join the outside concrete so that there is no lip at the doorway to hinder the people with disabilities from entering.

4. Interior Building Walls and Ceiling:

4.1. The walls shall be nonporous.

4.2. The walls shall be light in color to assist in reflecting available light.

4.3. The walls shall be difficult to write on or designed to be easily cleaned.

4.4. The walls shall be free from ledges, angles, and shelves so that less dirt accumulates and cleaning is easier.

4.5. Surface coating details shall be as specified by CXT or as approved by the engineer.

5. Toilet Riser:

5.1. The riser shall have no cracks and crevices on the outside for potentially odorous materials to collect in.

5.2. The riser shall have a heavy-duty open front seat and cover assembly that does not seal the air out.

5.3. The riser shall be easy to clean and impervious to oxidizing cleaning agents.

5.4. The riser shall be vandal resistant.

6. Toilet Paper Dispenser:

6.1. Use either the three-roll lock-bar dispenser or the mile-long (continuous roll) dispenser.

7. Air Vent for the Building:

7.1. The vent in the building, necessary to supply replacement air for the air drawn out of the vault, shall be around 120 sq. inches of free area for a single unit toilet.

7.2. There shall be only one vent opening in the building. The opening shall be placed only on one side of the building (the side that the prevailing wind blows against). The "side" can be either side, or the front or back of the building.

7.3. The vent shall be located "head-high" on the building if there is a constant prevailing wind hitting that side. For shifting winds, the vent shall be placed as low to the ground as possible and on the side that the wind is most predominant during the use period. If there is an up canyon wind In the morning and a down-canyon wind during the afternoon, then the vent shall be placed on an adjacent wall surface as low to the ground as possible so that the wind has the least effect of aspirating air out of the building.

7.4. The vent shall be constructed of a heavy-duty material, such as expanded metal, In order to prevent vandalism.

7.5. There shall be no screen in the vent opening unless the size is 1/4-lnch mesh (least dimension.

7.6. Vent locations and material details shall be as specified by CXT or as approved by the engineer.

8. Air Vent for the Vault:

8.1. The vault vent shall be a minimum of 12 Inches In diameter. Each vault shall have its own vent.

8.2. The top of the vent pipe shall be a minimum height of 3 ft. above the highest point of the roof.

8.3. The 12-lnch diameter pipe above the roof shall be painted a dark color to take advantage of potential convection resulting from the sun's energy as the sun heats the pipe.

8.4. The top of the 12-lnch pipe shall remain uncovered and unscreened. If a top is absolutely necessary, it should be a flat plate placed 12 inches above the top of the pipe and supported by three thin metal rods so as not to interfere with the aspiration aspects of the wind flowing over the open top pipe.

9. Installation:

9.1. Contractor is responsible for the removal of the existing vault toilets, clearing and grubbing, excavation and backfill, installation of new vault toilet, and minor site grading around the new vault toilet.

9.2. Excavation shall be a minimum 2 feet wider and longer than the vault toilet, and to a depth as such that the bottom of the floor slab is at grade with the existing ground surface after the placement of the bedding.

9.3. Compact bottom of excavation with vibratory or plate compactor prior to placement of aggregate base. Make 3 passes minimum with compacting equipment to firm up the subbase.

9.4. Place a minimum 1.0 foot (compacted in place) depth by 2 feet wider and 2 feet longer than the vault of granular base course (3/4” minus). Place in 6 inch lifts and compact with a vibratory compactor.

9.5. Backfill shall be of a well graded, compactable, mineral soil material free of excess moisture, muck, frozen lumps, roots, sod, or other deleterious material, with maximum particle size of 3 inches.

9.6. Backfill shall be placed evenly around the vault. It shall be placed in eight-inch loose lifts and each lift compacted with a minimum of two passes with a whacker-type mechanical compactor or equivalent.

9.7. Place select topping material free of excess moisture, muck, frozen lumps, roots, sod, or other deleterious material with a 3-inch maximum particle size around the sides and back of the vault toilet up to the top of the floor slab. Grade in such a way that moisture and runoff shall slope away from the vault toilet building once the anticipated backfill settlement has occurred.

9.8. Contractor shall stockpile any excavated topsoil to be placed after the installation of the vault toilet and prior to seeding/mulching.

9.9. All work sites shall be left free of debris and the surrounding area shall be graded smooth prior to completion of the contract.

9.10. Spread stockpiled topsoil as final layer after rough grading is completed. Areas disturbed by excavation, backfilling and stockpiling of excavated materials will be hand raked to remove exposed rocks over one inch in maximum dimension. Rocks removed from the surface shall be hauled off site by the contractor.

9.11. Seed all disturbed areas around the new toilet building. Seed mix shall be as listed below in the “Site Specific Specifications” section. Lightly rake the site following the seeding operation to incorporate the seed into the topsoil.

PART 3 – DEMOLITION/REMOVAL OF EXISTING VAULT TOILET BUILDINGS

1. Vault Clean Out:

1.1. The contractor shall have toilet vaults pumped by a licensed septic pumper at the contractor’s expense. Upon completion of this pumping the contractor shall secure the buildings so that no further use occurs after pumping. It will be the contractor’s responsibility to re-pump the vault (s) if it is not empty on the day of removal therefore it is important to schedule pumping to be done as near to the time of removal as possible. The agreement and pump-out receipts from a licensed septage hauler shall be made available to the engineer for review.

1.2. Provide additional rinsing, cleaning and pumping as necessary to properly empty the vaults in a manner such that no potentially harmful materials are released onto the ground during the demolition/removal process.

2. Demolition/Removal:

2.1. The existing toilet buildings and vaults listed for removal shall become the property of the contractor and unless otherwise indicated below in “Site Specific Specifications” shall be removed from Government property. The contractor may elect to move the entire toilet building from the site in one piece.

2.2. All demolition debris shall be removed from the site prior to completion of the contract.

2.3. Dispose of all demolition debris and any other waste generated as a result of this work in accordance with all federal, state and local requirements.

2.4. Contractor shall provide invoices, photos, and/or other documentation for pumping the vault, disposal of the sewage, and disposal of demolition debris to the Contracting Officer.

Site Specific Specifications for Eastern Region Vault Toilet Building Contracts Wayne National Forest

Bid Item #01 – Ring Mill Campground, Rinards Mill, OH (Lat: N39°36'25.97", Long: W81° 7'17.82") Athens District – Marietta Unit Preferred manufacturer: CXT Concrete Buildings Closest product source: Carr Concrete, 362 Waverly Road, Williamstown, WV 26183.

Potential contractors are strongly encouraged to visit the sites and verify conditions for themselves prior to preparing a bid.

This work is to include removal of one single vault toilet and installing a CXT Gunnison single-vault CXT (or equivalent) toilet. Building drawing/design, photo and specs. are attached.

· Engineer will specify new site location.

· Aggregate 40 tons of #57 for the base in hole and under concrete. Place approximately 3 cubic yards of reinforced concrete from the edge of the campground road to the new toilet. The pad will be 15’L x 10’W x 6” deep. Approximately 220 tons of #304 aggregate will be used to prep and repair the road for the crane and trucks.

· Site access/mobilization challenges: Short trailers will be required because of two bridges on the access road. Both bridges should be able to accommodate the crane.

· No tree removal needed.

· Contractor is responsible for removal and disposal of the above ground portion of the existing vault toilet.

· Existing vault may be left in the ground. The bottom of the vault shall be punctured and rendered unable to retain water to the engineer’s satisfaction. Vault shall be filled with borrow material consisting of compactable material free of excess moisture, muck, frozen lumps, roots, sod, or other deleterious material, with maximum particle size of 3 inches, and soil classification meeting AASHTO M 145 A-1, A-2-4, A-2-5, or A-3. Existing vault walls shall be buried at least 1 foot below finished ground.

· Contractor is responsible for clearing the new site location staked by the engineer.

· All disturbed ground shall be seeded using government furnished seed mix.

Optional Bid Item #O-01 – Kinderhook Horse Trailhead, Newport, OH (Lat: N39°24'20.38", Long: W 81°13'29.28") Athens District – Marietta Unit Preferred manufacturer: CXT Concrete Buildings Closest product source: Carr Concrete, 362 Waverly Road, Williamstown, WV 26183.

Potential contractors are strongly encouraged to visit the sites and verify conditions for themselves prior to preparing a bid.

This work is to include removal of one single vault toilet and installing a CXT Gunnison single-vault (or equivalent) toilet. Building drawing/design, photo and specs. are attached.

· Engineer will specify new site location.

· Aggregate 40 tons of #57 for the base in hole and under concrete. Place approximately 3 cubic yards of reinforced concrete from the edge of the campground road to the new toilet. The pad will be 15’L x 10’W x 6” deep. Approximately 220 tons of #304 aggregate will be used to prep and repair the road for the crane and trucks.

· Site access/mobilization challenges: Short trailer will be required because of access road. Crane should make the turn.

· No tree removal needed.

· Contractor is responsible for removal and disposal of the above ground portion of the existing vault toilet.

· Existing vault may be left in the ground. The bottom of the vault shall be punctured and rendered unable to retain water to the engineer’s satisfaction. Vault shall be filled with borrow material consisting of compactable material free of excess moisture, muck, frozen lumps, roots, sod, or other deleterious material, with maximum particle size of 3 inches, and soil classification meeting AASHTO M 145 A-1, A-2-4, A-2-5, or A-3. Existing vault walls shall be buried at least 1 foot below finished ground.

· Contractor is responsible for clearing the new site location staked by the engineer.

· All disturbed ground shall be seeded using government furnished seed mix.

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