Sundance_Vault_Toilet_-_Specifications.pdf

Technical Specifications for

SUNDANCE VAULT TOILET

BUREAU OF LAND MANAGEMENT

BILLINGS FIELD OFFICE

5001 Southgate Drive Billings, Montana 59101

APRIL 2022

TABLE OF CONTENTS

STATEMENT OF WORK (SOW)..........................................................................Page 1-6

1.0 GENERAL REQUIREMENTS...............................................................Page 1-2

2.0 SUBMITTALS…………………………………………………..……..Page 2-4

3.0 MEASUREMENT AND PAYMENT……………………………..…...Page 4-6

SUPPLEMENTARY SPECIFICATIONS…………………………..…………..Page 7-18

PRECAST CONCRETE VAULT TOILET.................Section MT-034000 (P. 7-14)

MINOR CONCRETE...................................................Section MT-03306 (P. 15-18)

STATEMENT OF WORK

SUNDANCE VAULT TOILET

STATEMENT OF WORK (SOW)

PROJECT: The Bureau of Land Management (BLM) Billings Field Office located in Billings, MT has a need for the construction of a new vault toilet at a parking area at its Sundance Recreation Area. The parking area is located approximately 3 miles outside of Laurel, Montana. The road providing access to the parking area is Thiel Road, and the parking area is located near where Thiel Road crosses the Clarks Fork of the Yellowstone River, as shown on the Construction Drawings.

It is the Government’s intention to have a new concrete, single vault toilet installed.

The Contractor shall be responsible for preparing the site and installation of the new vault toilet. Work includes all materials, labor, and equipment needed to provide all work described in this Statement of Work, the Supplemental Specifications, and the Construction Drawings. The parking area is owned by the

BLM.

This work shall be in accordance with the vault toilet manufacturer’s recommended installation procedures, and any local, state, and federal regulations, including floodplain regulations. The work includes excavation, fill, installation of bedding material, setting the vault, setting the toilet building, backfill, and construction of an ADA ramp to the front door of the vault toilet, as shown in the Construction Drawings. Vault toilet shall be installed with the floor at an elevation of 2’ above the 1% annual chance flood elevation, as shown in the Construction Drawings. The Government shall provide a control point with a known elevation for Contractor to base constructed elevations on.

It is recommended for the Contractor and manufacturer to attend the pre-bid site tour prior to bidding to understand the existing site conditions. No monies will be added to the Contract due to issues that arise from the Contractor’s lack of understanding of the existing site conditions. The Contactor must work with the Government to establish a construction schedule to assure a smooth installation of the new vault toilet per Section MT–034000–Precast Concrete Vault Toilet Supplemental Specifications. Concrete sidewalk work shall be performed in accordance with current ADA Standards for Accessible Design and per Section MT- 03306 Minor Concrete Supplemental Specifications.

1.0 GENERAL REQUIREMENTS

1.1 If the SOW and the Supplemental Specifications herein this document conflict in requirements, the SOW shall govern. Except where the Contract Documents include more stringent requirements, applicable industry standards shall have the same force and effect as if bound or copied directly into the Contract Documents to the extent referenced. Such standards are made a part of the Contract Documents by reference.

1.2 Contractor shall remove all rubbish/debris off the project location upon completion of the project.

1.3 Contractor shall clean, drain, and dry all equipment before bringing it on site.

Contractor shall ensure that all equipment is clean and free of weed seeds, loose oils, grease, or other contaminants, and will be responsible for any environmental contamination cleanup related to equipment used on site.

1.4 All work shall be inspected by the Government to ensure compliance with the product manufacturer’s installation instructions, recommendations, and to industry codes and standards. It will also be inspected to ensure that the floor of the vault toilet is constructed a minimum of two (2)-feet above the floodplain elevation.

1.5 A preconstruction meeting will be held prior to the start of work. The Contractor will be notified in advance of the meeting time, date, and location. The purpose will be to review the required work, Construction Drawings, and Specifications.

1.5.1 The Contractor, Subcontractors, and the persons responsible for coordination of the work shall be present at the meeting. Be prepared to summarize and explain procedures for the project and present any requested submittals.

1.6 Contractor shall work normal hours (6:30am to 5:30pm), Monday through Friday, unless otherwise specified by the Contracting Officer. Contractor cannot work on Federal holidays.

1.7 Contractor is encouraged to visit the site and determine actual quantities, dimensions, and site conditions prior to bidding. The attached Construction Drawings are for informational purposes only.

1.8 Contractor is responsible for complying with Federal Specifications/Standards (Fed. Spec.), ADA Standards, ACI Standards, and any other standards typical of the industry.

1.9 Contractor is responsible for complying with the International Building Code (IBC) 2021, if applicable.

1.10 Contractor is responsible for all public and private utility locates. Coordinate with Montana 811 and any other necessary entities. Contractor is responsible for any damage to underground and overhead utilities such as, but not limited to, water, electrical, phone, sewer, and power lines. All damaged underground or overhead utilities will be the full responsibility of the Contractor to repair and shall be repaired at the Contractor’s expense.

1.11 Contractor is responsible for safety and structural adequacy of vault toilet during transportation, picking, and final placement. Contractor to repair or replace any damaged component of the vault toilet at no cost to the Government.

1.12 Contractor shall be responsible for any damage to new or existing construction, equipment, wiring, structures, utilities, etc. resulting from the Contractor’s construction procedures. Any damage shall be repaired or replaced by the Contractor, at the Contractor’s expense, to the satisfaction of the Contracting Officer.

1.13 The aesthetic values of the site and surrounding areas are of prime importance.

The Contractor shall take all care necessary to preserve all plant life and other natural features. Minimize clearing and grubbing operations as much as practical to perform the required work. Travel of motor vehicles and heavy equipment shall be limited to existing roads and parking areas. Soil disturbance shall be limited as much as practical.

No off-road travel is permitted. Any surface damage outside the project area shall be corrected by the Contractor at their expense.

2.0 SUBMITTALS

2.1 Scope: Submittals shall be based on the requirements listed in these contract sections.

2.2 Requirements: For required submittals, allow at least 3 working days for review.

Submittals shall be delivered to the Contracting Officer’s Representative (COR) for review.

2.3 Identification of Submittal: Completely identify each submittal by showing at least the following information:

2.3.1 Name and address of submitter, plus name and telephone number of the individual to contact for further information.

2.3.2 Name of project as it appears in these specifications.

2.3.3 Contract number, drawing number, and specification section number to which the submittal applies.

2.3.4 Whether this is an original submittal or re-submittal.

2.3.5 Each item shall note the manufacturer's name and address.

2.4 The successful bidder will submit the following for approval to the Contracting Officer Representative at the preconstruction meeting:

2.4.1 Engineer Stamped Drawings of the vault toilet.

2.4.1.1 The toilet must meet ADA requirements.

2.4.1.2 See Supplemental Specification SECTION MT-034000–PRECAST CONCRETE VAULT TOILET for additional requirements related to the vault toilet.

2.4.2 Full plan and schedule for installation of vault toilet, including excavation, backfill, embankment, compaction, cleanup, etc.

2.4.3 Contractor site safety plan.

2.4.4 Manufacturer standard warranty in writing.

2.4.5 For the 1.5”-Crushed Aggregate Base Course:

1.5”-MINUS GRADATION AND REQUIREMENTS:

Sieve Size Percent Passing

1.5-Inch 100

3/4-Inch 74-96

3/8-Inch 40-76

No. 4 24-60

No. 40 6-34

No. 200 0-8

*Maximum liquid limit for the material passing the No. 40 sieve is 25.

*Plasticity Index for the material passing the No. 40 shall not exceed 6.

* A wear factor not exceeding 50% at 500 revolutions.

*At least 35 percent by weight of the aggregate retained on the No. 4 sieve must have at least one mechanically fractured face.

2.4.5.1 Sieve Analysis according to ASTM C136 and C117.

2.4.5.2 Atterberg Limits according to ASTM D4318.

2.4.5.3 Percentage of Mechanically Fractured Particles according to MT-217.

2.4.5.4 Material Proctor Compaction Test information for optimum moisture content and maximum dry density according to ASTM D698.

2.4.5.5 Material Hardness per the LA Abrasion test according to ASTM C131.

2.4.5.6 All material shall be Certified Weed Seed Free.

2.4.6 For the 3”-Minus Fill Material:

2.4.6.1 Sieve Analysis according at ASTM C136 and C117.

2.4.6.2 Material Proctor Compaction Test information for optimum moisture content and maximum dry density according to ASTM D968.

2.4.6.3 All fill materials shall be Certified Weed Seed Free.

2.4.7 For the Concrete Sidewalk:

2.4.7.1 See Supplemental Specification SECTION MT-03306–MINOR CONCRETE 1.2 SUBMITTALS for required submittals related to the Concrete Sidewalk.

2.5 The Government shall have 3 days after product submission to approve/disapprove products and product components.

2.6 Provide the Government with proof of product manufacturer’s product warranty, and certification that the installations were performed according to the terms and conditions of the warranty.

3.0 MEASUREMENT AND PAYMENT

3.1 CLIN 0001 – Mobilization

3.1.1 Method of Measurement: Lump Sum

3.1.1.1 Mobilization will be measured and paid for once the work commences for the site per the following completion of work:

3.1.1.1.1 When 5 percent of the amount is earned from the total contract amount, 50 percent of the amount bid for mobilization will be paid.

3.1.1.1.2 When 10 percent of the amount is earned from the total contract amount, 100 percent of the amount bid for the mobilization will be paid.

3.1.2 Basis of Payment: Prices and payment will be full compensation for the work described in this section. No modification or adjustments shall be allowed for costs and changes to mobilization despite changes in fuel or transportation costs. Payment will be made under CLIN 0001.

3.2 CLIN 0002 – Vault Toilet

3.2.1 Method of Measurement: Lump Sum

3.2.1.1 Vault Toilet will be paid for on a lump sum basis in accordance with the Statement of Work, the Supplemental Specifications, and the Construction Drawings.

3.2.2 Basis of Payment: Vault Toilet price and payment will be full compensation for the work described including furnishing and placing the vault toilet and all materials, including all labor, equipment, tools, and incidentals, necessary to complete the work herein. Vault Toilet is to include any excavation, embankment, site grading, clearing, grubbing, and landscaping required to install the vault toilet per the Statement of Work, the Supplemental Specifications, the Construction Drawings, and the manufacturer’s recommendations. Payment will be made under CLIN 0002.

3.3 CLIN 0003 – Concrete Sidewalk

3.3.1 Method of Measurement: Linear Feet

3.3.1.1 Concrete Sidewalk will be measured and paid for by linear feet in accordance with the Statement of Work, the Supplemental Specifications, the Construction Drawings, and based on the dimensions of the structure and details shown in the Construction Drawings.

3.3.2 Basis of Payment: Concrete Sidewalk prices and payment will be full compensation for the work described in the Statement of Work, the Supplemental Specifications, and the Construction Drawings, and including the cost of all materials, labor, reinforcing steel, rebar chairs, formwork, etc.

Payment will be made under CLIN 0003.

3.4 CLIN 0004 – Remove/Replace Landscape Rock

3.4.1 Method of Measurement: Each

3.4.1.1 Remove/Replace Landscape Rock will be measured and paid for per each based on the Construction Drawings.

3.4.2 Basis of Payment: Remove/Replace Landscape Rock will be full compensation for the work shown in the Construction Drawings, including the cost of all materials, labor, and equipment to remove the landscape rocks from their current locations and place them in the locations shown on the Construction Drawings and at the direction of the Contracting Officer Representative. Damaged or broken landscape rocks will be replaced by the Contractor at no extra cost to the Government. Rocks not indicated in the Construction Drawings to be removed and replaced but that are moved for the Contractor’s convenience and constructability will not be paid for. Payment will be paid under CLIN 0004.

3.5 CLIN 0005 – 1.5”-Minus Crushed Aggregate Base Course

3.5.1 Method of Measurement: Ton

3.5.1.1 1.5”-Minus Crushed Aggregate Base Course will be measured and paid for by the ton of material transported, spread, and compacted at the project site.

3.5.1.1.1 Loose material hauled shall be weighed at a certified scale and tickets given to the Government.

3.5.2 Basis of Payment: 1.5”-Minus Crushed Aggregate Base Course accepted quantities will be paid for at the Contract price per unit of measurement. Price and payment shall be full compensation for furnishing, delivering, placing, and compacting all material, including all test requirements, labor, equipment, tools, and incidentals necessary to complete the work as shown in the Construction Drawings and as described in this Statement of Work and Supplemental Specifications. Payment will be made under CLIN 0005.

3.6 CLIN 0006 – 3”-Minus Fill Material

3.6.1 Method of Measurement: Lump Sum

3.6.1.1 3”-Minus Fill Material will be measured and paid for on a lump sum basis. The final, compacted volume of material, as displayed on the Construction Drawings, is for informational purposes only and may vary during construction.

3.6.2 Basis of Payment: 3”-Minus Fill Material price and payment shall be full compensation for furnishing, delivering, placing, and compacting all material, including all test requirements, labor, equipment, tools, and incidentals necessary to complete the work as shown in the Construction Drawings and as described in this Statement of Work and Supplemental Specifications. No modification or adjustments shall be allowed for changes in 3”-Minus Fill Material costs or 3”-Minus Fill Material quantities that vary from the Construction Drawings. Payment will be made under CLIN 0006.

SECTION MT-034000-PRECAST

CONCRETE VAULT TOILET

SUNDANCE VAULT TOILET

SECTION MT–034000–PRECAST CONCRETE VAULT TOILET

1.0 GENERAL INFORMATION

1.1 SECTION REQUIREMENTS

1.1.1 Submittals: Product Data and Shop Drawings.

1.1.2 Manufacturer Qualifications:

1.1.2.1 ISO 9001 certified.

1.1.2.2 PCI certified.

1.1.2.3 All drawings to be stamped by a professional engineer prior to acceptance.

1.1.2.4 The successful bidder will be responsible for all work including all material, labor, transportation, equipment, supervision, and the performance of all operations to complete the work as required by this Statement of Work (SOW).

1.1.2.5 For all the requirements required by the Bureau of Land Management, see the information contained on each of the Construction Drawing sheets enclosed, titled 1 of 5 – Cover Sheet; 2 of 5 – Project Maps; 3 of 5 – Vault Toilet Plan 1; 4 of 5 – Vault Toilet Plan 2; 5 of 5 Detail Sheet

1. The required information is on the drawings as notes and details. The instructions contained in the notes and details supplement this Statement of Work and these Supplemental Specifications.

1.2 REFERENCES

ASTM C33 Concrete Aggregates

ASTM C39 Method of Test for Compressive Strength of Cylindrical Concrete Specimen

ASTM C94 Standard Specification for Ready-Mixed Concrete

ASTM C143 Method of Test for Slump of Concrete

ASTM C150 Standard Specification for Portland Cement

ASTM C172 Standard Practice for Sampling Freshly Mixed Concrete

ASTM A185 Standard Specification for Steel Welded Wire Reinforcement, Plain, or Concrete

ASTM C192 Method of Making and Curing Test Specimens in the Laboratory

ASTM C231 Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method

ASTM C309 Standard Specifications for Liquid Membrane-Forming Compounds for Curing Concrete

ASTM C494 Standard Specification for Chemical Admixtures for Concrete

ASTM A615 Standard Specification for Deformed and Plain Carbon-Steel bars for Concrete Reinforcement

SUNDANCE VAULT TOILET

ASTM C618 Standard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete

ASTM C979 Standard Specification for Pigments for Integrally Colored Concrete

ASTM D1557 Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Modified Effort

ACI 211.1 Standard Practice for Selecting Proportions for Normal, Heavyweight, and Mass Concrete

ACI 306 Cold Weather Concreting

ACI 318 Building Code Requirements Structural Concrete and Commentary (includes Errata)

PCI MNL 116 Quality Control for Plants and Production of Precast Prestressed Concrete Product

Yellowstone County Floodplain Regulations

Yellowstone County Flood Insurance Study Number 30111CV002A

The NFIP Floodplain Management Requirements

2.0 PRODUCTS

2.1 PERFORMANCE REQUIREMENTS

2.1.1 Basis of Design: CXT Gunnison or approved equal.

2.1.2 General: Building shall be manufactured using precast concrete, including for the roof. Structure and accompanying foundation shall be suitable to the region and properties associated with its final placement. Design shall meet Architectural Barriers Act Standards, as well as other governing accessibility and building code requirements. Vault buildings shall adhere to the following structural load restrictions:

2.1.3 Structural Requirements

2.1.3.1 Snow Load: 350 psf.

2.1.3.2 Floor Load: 400 psf.

2.1.3.3 Wind Load: Built to withstand the effects of a 150 miles per hour (3-second gust) wind exposure C.

2.1.3.4 Seismic: Built to withstand category E earthquake.

2.1.4 Additional Design Standards

2.1.4.1 Structure shall incorporate all design aspects of Sweet-Smelling Technology as outlined by Briar Cook for the U.S. Forest Service.

2.1.4.2 Single vault building shall be an all-concrete design with a minimum 3/12 roof pitch.

2.1.4.3 Structure thickness:

2.1.4.3.1 4” wall thickness

SUNDANCE VAULT TOILET

2.1.4.3.2 4-1/2” roof thickness

2.1.4.3.3 5” floor thickness

2.1.5 Single vault buildings shall have monolithic floor to prevent panels from migrating in different direction during periods of freeze/thaw stress.

2.1.6 Exterior Concrete Finishes:

2.1.6.1 Roof: Exposed Aggregate

2.1.6.2 Walls: Exposed Aggregate with Barnwood Texture

2.1.6.3 Front Wall Texture: Exposed Aggregate with Barnwood Texture

2.2 MATERIALS

2.2.1 Concrete:

2.2.1.1 Mix design designed to ACI 211.1 for concrete of good workability.

2.2.1.2 Concrete to have a minimum of 675 pounds of cementitious material per yard. Cement shall be a low alkali type I/II or III conforming to ASTM C-150.

2.2.1.3 Coarse aggregates shall conform to ASTM C33 with the designated size of coarse aggregate #67.

2.2.1.4 Maximum water/cement ratio shall not exceed 0.45.

2.2.1.5 Air-entraining admixtures shall conform to ASTM C260. Water reducing admixtures shall conform to ASTM C494, Type A.

2.2.2 Concrete Coloring Additives

2.2.2.1 Coloring additives to conform with ASTM C979.

2.2.2.2 Concrete coloring shall be added to the following, based on the color selection made by the Government:

2.2.2.2.1 Toilet building roof panels: Match existing at Sundance Lodge Recreation Area; Government to approve before construction.

Government will provide photos of existing upon request.

2.2.2.2.2 Exterior toilet building walls: Match existing at Sundance Lodge Recreation Area; Government to approve before construction.

Government will provide photos of existing upon request.

2.2.2.2.3 Screen Panels: Match existing at Sundance Lodge Recreation Area; Government to approve before construction. Government will provide photos of existing upon request.

2.2.2.3 Same brand and type of color additive to be used throughout the manufacturing process.

2.2.2.4 All additives shall be precisely weighed with adequate mixing to ensure uniform dispersion of color.

2.2.3 Concrete Placement

SUNDANCE VAULT TOILET

2.2.3.1 Cold Weather: Concrete placed in accordance with ACI 306. Concrete shall not be placed if ambient temperature is expected to be below 35° Fahrenheit during the period unless a minimum temperature of 50° Fahrenheit can be maintained using a supplemental heat source.

2.2.3.2 Hot Weather: Temperature shall not exceed 90° Fahrenheit at the time of placement. If ambient temperature reaches 90° Fahrenheit, concrete shall be protected using a moist covering.

2.2.4 Reinforcing Bars: Conforming to ASTM A 615/A 615M.

2.3 ACCESSORIES AND FINISHES

2.3.1 Dead Bolt

2.3.1.1 Certified ANSI/BHMA A156.5-2001 Grade 1

2.3.1.2 Heavy duty tamp resistant

2.3.1.3 2-3/4” backset

2.3.1.4 U.S. 26D finish

2.3.2 Doors – Steel

2.3.2.1 Doors shall be flush panel type 1-3/4” thick, minimum 16-gauge steel, top painted with DTM ALKYD.

2.3.2.2 Door frames shall be welded or knockdown type, single rabbet, minimum 16-gauge prime coated steel top painted with DTM ALKYD, width to suit wall thickness.

2.3.2.3 Three rubber door silencers shall be provided on latch side of frame.

2.3.3 Hinges:

2.3.3.1 Three per door with dull chrome plating 4-1/2” x 4-1/2” adjustable tension and automatic closing for each door.

2.3.4 Doorstop:

2.3.4.1 Dome style stop meeting ANSI 156.16.

2.3.5 Door Sweep

2.3.5.1 Door sweep shall be provided at bottom of door with adjustable brush.

2.3.6 Double Coat Hook

2.3.6.1 16-gauge, type 304 stainless steel.

2.3.6.2 Formed construction with a satin finish and 3/16”x7/8” nail-in anchor.

2.3.7 Lockset

2.3.7.1 Accepts Best brand lock sets.

2.3.7.2 Meets ANSI A156.2 Series 4000, Grade 1 cylindrical lockset for exterior door.

2.3.7.3 Lever handle, inside and out.

SUNDANCE VAULT TOILET

2.3.7.4 Either handle operates latch unless outside handle is locked by inside push-button.

2.3.7.5 U.S. 26D finish.

2.3.8 Paint

2.3.8.1 Paint and materials shall conform to all federal specifications.

2.3.8.2 No more than 0.06% lead by weight.

2.3.8.3 Paint Types:

2.3.8.3.1 Interior

2.3.8.3.1.1 Floors: Chemical resistant urethane, gray in color.

2.3.8.3.1.2 Interior Walls/Ceiling: modified acrylic, water repellent penetrating stain. White in color, followed with clear acrylic anti-graffiti sealer.

2.3.9 Riser

2.3.9.1 Molded from a single piece of HDPE polyethylene.

2.3.10 Riser Vent Stack Screen

2.3.10.1 Provide Raptor Vent Screen or bird proof screen for vent stack.

2.3.11 Signs

2.3.11.1 Exterior Signs: Shall have raised pictograms, letter, and braille. Gender signs as shown on drawings.

2.3.11.2 Interior Sign: “No Trash in Vault” sign to displayed for the toilet.

2.3.11.3 All signs inset a minimum of 4/4” into wall with a 45° bevel.

2.3.11.4 All signs shall be anchored into concrete with ¼”x¾” concrete anchor nails.

2.3.12 Toilet Paper Dispenser

2.3.12.1 Constructed of ¼” thick, type 304 stainless steel.

2.3.12.2 Dispenser to hold a minimum of three rolls of toilet paper.

2.3.12.3 Fastening system to withstand a minimum of 300-pound load from above.

2.3.12.4 Shall be lockable.

2.3.13 Vault Liner

2.3.13.1 1,000-gallon minimum capacity.

2.3.13.2 Minimum thickness of 0.100.

2.3.13.3 Constructed of molded polyethylene.

2.3.14 Wall Vent

2.3.14.1 Vent locations as shown on drawings.

SUNDANCE VAULT TOILET

2.3.14.2 Vent cover shall be 14-gauge, or greater, 304 stainless steel painted with DTM and anchored into the concrete wall or placed in the door, based on preference of the Government.

2.3.14.3 Non-vision louver, 0.1” extruded, aluminum jet coat finish, with insect screen.

2.3.15 Windows

2.3.15.1 Window 3/16” thick translucent pebble finished mar-resistant Lexan.

2.3.15.2 ¾” recess with 45° bevel.

2.3.16 Frames shall have vandal resistant fasteners.

2.3.17 Vent Stack: 12” minimum diameter, projecting at least 3 feet above the peak of the structure.

2.3.18 Grab Bars: Grab bars will be 18-gauge, type 304 stainless steel with 1-1/2” clearance. Grab bars will each be able to withstand 300-pound top loading.

2.3.19 Solar Light Kit: Provide solar light kit.

3.0 EXECUTION

3.1 PRECAST UNITS

3.1.1 Fabricate precast concrete units straight and true to size and shape with exposed edges and corners precise and true so each finished panel complies with PCI MNL 117 product tolerances as well as position tolerances for cast-in items.

3.1.2 Panel faces shall be free of joint marks, grain, and other obvious defects.

Corners, including false joints, shall be uniform, straight, and sharp.

3.2 DELIVERY / PREPARATION

3.2.1 Structure to be ready for delivery within 90 days of ordering.

3.2.2 Contractor shall be responsible for safe transportation, offloading, and set-up of structure at project site.

3.2.3 Contractor shall be responsible for preparing site for placement of the structure. This is to include any fees associated with but not limited to site preparation and surrounding concrete, loading and hauling said materials, and any associated landfill fees.

3.3 INSTALLATION

3.3.1 Install per manufacturer’s recommendations.

3.3.2 Install precast units level, plumb, square, true, and in alignment.

3.3.3 Connect precast vault units in accordance with manufacturer’s recommendations.

3.3.4 Clean exposed surfaces of precast concrete units after erection and completion of joint treatment to remove markings, dirt, and stains.

SUNDANCE VAULT TOILET

4.0 WARRANTY

4.1 CONCRETE

4.1.1 20-year warranty against defects in material or workmanship.

4.2 ACCESSORIES AND FINISHES

4.2.1 1-year warranty against defects in material or workmanship.

*This page is left blank intentionally.

SECTION MT-03306-

MINOR CONCRETE

SUNDANCE VAULT TOILET

SECTION MT–03306–MINOR CONCRETE

1.0 GENERAL

1.1 SUMMARY:

1.1.1 Section Includes: Furnishing and placing cast-in-place concrete.

1.2 SUBMITTALS:

1.2.1 General: Submittals shall be according to Statement of Work Section 2.0 Submittals.

1.2.2 Certificates of Conformance: Submit 2 copies of written certification from the supplier of the following Contractor-furnished items to be used on this project that they conform to the requirements of this specification section:

1.2.2.1 Portland Cement

1.2.2.2 Aggregate

1.2.2.3 Isolation Joint Materials

1.2.2.4 Air-Entrainment Admixture

1.2.2.5 Reinforcing Steel

1.3 QUALITY ASSURANCE:

1.3.2 Causes for Rejection: Concrete may be rejected for, but not limited to, the following reasons:

1.3.2.1 Freezing within the first 3 days of placement.

1.3.2.2 Excessive or inadequate slump.

1.3.2.3 Segregation of aggregate or over-vibration resulting in excessive water in the surface of the concrete.

1.3.2.4 Honeycomb over 25% of the surface.

1.3.2.5 Voids larger than 2 inches across.

1.3.2.6 Exposed reinforcing steel.

1.3.2.7 Misalignment of concrete.

1.3.2.8 Substandard aggregate in the mix.

1.3.2.9 Failure to cover or seal concrete during initial 7-day curing period.

2.0 PRODUCTS

2.2 MATERIALS

2.2.2 Cement: Portland cement, Type I, according to ASTM C 150. The use of caked or hardened cement will not be permitted. Cement for mixed concrete at the job site shall be delivered to the job site in unopened sacks.

2.2.3 Water: Potable water shall be used for mixing concrete.

2.2.4 Aggregates: The aggregate shall be hard, durable, uncoated rock according to

ASTM C 33.

SUNDANCE VAULT TOILET

2.2.4.1 The coarse aggregate shall have a maximum size of 1 inch, and not over 5 percent passing the No. 4 sieve.

2.2.4.2 The fine aggregate shall completely pass the No. 4 sieve with no more than 5 percent passing the No. 100 sieve. The fine aggregate shall contain no silt, loam, clay, or organic particles.

2.2.5 Air-Entraining Admixture: ASTM 260. The amount of air shall be 4 to 6 percent when maximum aggregate size is 3/4-inch, and 4.5 to 7.5 percent when maximum aggregate size is 3/8-inch. A variations of plus or minus 1 percent is allowable.

2.2.6 Rebar: #4 Rebar, Unit weight: 0.668 pounds per foot, Nominal diameter: 0.5 inches, Nominal area: 0.2 square inches, Grade 60.

2.2.7 Dowels: 1/2 inch smooth, Unit weight: 0.668 pounds per foot.

2.2.8 Isolation Joint Materials: Preformed filler strips shall be according to ASTM D 994 and shall be the full width and depth of the joint. Unless otherwise indicated, the material shall be 1/2 inch thick.

2.3 MIXES – CONCRETE:

2.3.2 Concrete: Design of mixed concrete shall be according to ASTM C 94 and be designed for a 28 day compressive strength of 4000 psi, and a slump of 2 to 4 inches as determined by ASTM C 143.

2.3.3 Mixing Materials: Concrete shall be machine mixed. Mixers shall be batched according to their capacity and not overloaded. Mixing of ingredients shall continue for at least 3 minutes. The concrete shall be placed as soon as possible after mixing to prevent cold joints.

2.4 SOURCE QUALITY CONTROL:

2.4.2 Concrete Testing: Shall be conducted each day there is a pour in the presence of the Contracting Officer Representative who shall be given 48-hours notice before any test is to be conducted. The Contractor shall pay all fees associated with and make arrangements for a certified, independent testing laboratory to perform the air content tests, compression tests of 3 cylinders and slump tests to substantiate mix designs. Record and distribute the results.

3.0 EXECUTION

3.1 PREPARATION:

3.1.1 Clearing: Contractor is responsible for any clearing and grubbing required to complete the project. The area to be excavated shall be thoroughly cleared and stripped of objectionable vegetative matter, brush, trees, stumps, roots, and rocks, and shall be removed and disposed of offsite by the Contractor at their expense. Minimize clearing and grubbing actions as much as practical.

Consult the Contracting Officer Representative for approval, prior to any clearing and grubbing operations.

3.1.2 Subbase Preparation: Subbase and earth walls to be in contact with concrete shall be undisturbed or compacted in 6-inch compacted lifts to a minimum of 95% the theoretical laboratory maximum density, as determined by ASTM

SUNDANCE VAULT TOILET

D698, within 3% of the laboratory optimum moisture content. Density testing may be performed by the BLM.

3.1.3 Form Construction: ACI 347R. Construct forms to the sizes, shapes, lines, and dimensions shown on the drawings and Manufacturer’s installation instructions, to obtain accurate alignment, location, grades, and level and plumb surfaces in finished structures. The Contractor shall provide and install construction aids and imbedded items such as anchor bolts and reinforcing rebar. Fabricate forms for easy removal without hammering or prying against the concrete surfaces. Provide crush plates or wrecking plates if stripping may damage the concrete. Form oil may be applied to facilitate removal of forms.

Forms and subbase shall be wet before placement of concrete. Form concrete to comply with all applicable ADA Standards.

3.1.4 Form Inspection: Notify the Contracting Officer Representative 48 hours in advance of concrete placement to allow for inspection of forming and placement of items to be imbedded in the concrete. Excess water shall be removed from the forms before concrete placement.

3.1.5 Reinforcing Steel: Reinforcement shall be held securely in position by steel wire, mortar blocks, metal chairs, or plastic chairs during the placement of concrete. Reinforcement shall be inspected by the Government prior to placement of concrete.

3.2 CONCRETE PLACEMENT:

3.2.1 Mix Design: Concrete shall not be placed until the mix design has been approved by the Contracting Officer Representative.

3.2.2 Placement and Consolidation: Concrete shall be placed in lifts with a maximum depth of 18 inches. Each lift shall be adequately vibrated, rodded, or spaded into place to fill voids. Where more than one lift is placed, a vibrator shall be used to consolidate the concrete by penetrating through the upper lift and at least 6 inches into the lower lift. Vibrators shall not be used next to the form or to move concrete. Concrete shall be deposited as nearly as practical to its final position to avoid flow causing segregation of the aggregate. Concrete shall not be dropped more than 5 feet vertically without the use of a tremie or similar device.

3.2.3 Bonding to Existing Concrete: When a bond is desired between a fresh pour of concrete placed against concrete which has set, the surface of the in place concrete shall be thoroughly cleaned of loose material, and the in place concrete soaked with water. When no bond is desired, the surface of the existing concrete shall be painted with asphalt or other material to prevent bonding.

3.2.4 Concrete Placement Under Adverse Conditions: During hot weather, refer to ACI 305R. During cold weather, refer to ACI 306R. Materials required for protection shall be on the jobsite before concrete work is started. Do not place concrete on a frozen subgrade or against surfaces having deposits of frost, snow, or ice.

SUNDANCE VAULT TOILET

3.2.5 Concrete Placed Against Existing Structure: Expansion joints shall be used between the concrete and any existing structures, including the vault toilet.

Expansion joints shall be installed in accordance with ACI specifications and standard industry practices.

3.3 CONCRETE FINISHING:

3.3.1 Concrete Surface Finishes: The top surface of walls and exterior slabs shall be given a wood-float finish after screeding. Concrete requiring skid resistant finishes shall be broom finished with horsehair or straw brooms. Interior slabs shall be given a steel-trowel finish unless otherwise indicated on the drawings.

Power trowels may be used. Brooms shall have a minimum width of 18 inches and shall be applied perpendicular to the centerline. Joints and panel borders shall be edged with a metal tool to leave a smooth border on the concrete.

3.3.2 Form Removal: Formwork not supporting concrete may be removed after curing at not less than 50 degrees F for 24 hours after placing the concrete, and when curing and protection procedures are followed as specified. The concrete should be sufficiently hard so as not to be damaged by form removal.

3.3.3 Concrete Finish Patching: Immediately after form removal, remove minor bulges and projections on exposed concrete by chipping or tooling, and rub or grind the surface. Chip honeycombed or other defective areas to solid concrete, cutting edges to right angles with the surface. Brush cavities with a grout of cement and water, and paint with portland cement mortar. Cure repairs the same as the concrete.

3.4 FIELD QUALITY CONTROL:

3.4.1 Testing: Testing shall be conducted in the presence of the Contracting Officer Representative who shall be given 48-hours notice before any test is to be conducted. The Contractor shall make arrangements for a certified, independent testing laboratory to perform the air content tests, 3 - 28-day cylinders, and slump tests to substantiate each days pour. Record and distribute the results.

3.5 PROTECTION:

3.5.1 Requirements: During the curing period, protect concrete from load stresses, shock loads, or vibration. Protect surfaces from damage by equipment, other materials, running water, or rain.