Attachment_1)_CC_&_CM_Water_Tank_SPECS.pdf

The Great Smoky Mountains National Park

Townsend, TN 37882

PMIS #203445

Table of Contents

Specification Section Issued

Division 1 – General Requirements

Section 01100 – Summary of Work Award Section 01270 – Price and Payment Award Section 01310 – Project Management and Coordination Award Section 01330 – Submittal Procedure Award Section 01430 – Quality Assurance Award Section 01560 – Barriers Award Section 01600 – Materials and Equipment Award Section 01770 – Project Closeout Award

Division 2 – Site Work

Section 02050 – Demolition Award Section 02310 – Grading Award Section 02315 – Excavation, Trenching, and Backfill Award Section 02316 – Unclassified Excavation Award Section 02322 – Water Storage Tank Lining Award Section 02370 – Temporary Erosion Control Award Section 02372 – Environmental Protection Award Section 02510 – Water Distribution Award Section 02606 – Mineral Aggregate Base Award Section 02705 – Road Restoration Award Section 02920 – Topsoiling, Seeding, Fertilizing Award

Division 3 – Concrete

Section 03300 – Cast-In-Place Concrete Award Section 03310 – Reinforcing Steel for Concrete Award

Division 4 – Water Storage Tanks

Section 04010 – Bolted Steel Water Storage Tank Award Section 04020 – Welded Steel Water Storage Tank Award

Division 5 – Electrical

Section 05010 – Basic Electrical Material and Methods Award

05/18/2017 01100 Summary of Work - 1 of 4

GRSM PMIS #203445

SECTION 01100

SUMMARY OF WORK – CADES COVE CAMPGROUND AREA

Public Water System

PART 1 - GENERAL

1.01 SUMMARY

A. The work to be performed under this contract shall consist of furnishing the following to perform the work outlined in these specifications and as indicated by Project Drawings (133/60133):

1. tools

2. equipment

3. materials

4. labor

5. supplies

6. manufactured articles

7. all transportation to complete the work

8. temporary facilities

B. Location of Work: Cades Cove Area, Great Smoky Mountains National

Park, near Townsend, TN.

C. Incidental Items: All work, materials, and services not expressly listed as being provided by others or not expressly called for in the contract but are necessary for the completion of the work in good faith, shall be furnished, installed, and performed by the contractor.

1.02 BACKGROUND

A. The Cades Cove area of the Great Smoky Mountains National Park is a highly visited area for tourist, campers, and hikers. Aside from the Cades Cove loop the area also has a campground, Park maintenance yard, ranger station, concession area and Park housing. The water storage tanks were constructed in the mid 1980’s and have recently had emergency repairs done in 2012. The existing above ground fiberglass water storage tanks each have a storage of 30,000 gallons. The scope of this project is to construct two (2) 45,000 gallon steel tanks to replace the existing tanks.

1.03 SCHEDULING

A. The Cades Cove water system will be in service during the project.

Brief interruption of service for tie-ins will be permitted, but shall be coordinated with the Park Service. The area is out of the way for the public but the contractor will be responsible for barriers as needed. The

05/18/2017 01100 Summary of Work - 2 of 4 contractor is expected to be courteous to the Park’s visitors and only work with equipment during the hours of 8 a.m. to 5 p.m. The two proposed tanks shall be constructed and completely operational before the existing tanks are disconnected and demolished.

B. Tree clearing from April through November will need to be scheduled with COR so trees can be assessed for endangered bats before falling can proceed. Delays may occur if bats need to be relocated.

1.04 SUMMARY OF WORK TO BE DONE BY CONTRACTOR

A. Water Storage Tanks

Clear and grub within the boundaries established on the plans, excavate, grade, and establish the access road for new tank site.

Proposed tank pad to be raised or lowered as necessary for the site to balance. Construct foundations for the water tanks and associated subsurface water piping. Erection water storage tanks and internal piping. All work performed on-site shall be videotaped.

B. Waterline

Install piping and valves connecting the tanks, including new influent and effluent waterlines to the connection points designated on the plans. Cut and cap existing waterlines no longer in service.

Connect lines to the system. Install fencing around the perimeter of site as shown on the Construction Plans.

C. Demolition of Existing Water Storage Tanks

Remove and dispose of all waterlines and fittings within the tank deconstruction area. Deconstruction of the existing tanks and remove all materials off-site, to an approved waste disposal or recycling facility in accordance with all applicable laws and regulations. Remove existing slab foundation and all exposed waterlines that could not be reached during initial removal. Cut and cap waterlines. Once tanks and all materials are removed off-site, regrade site for parking use. Remove fencing and gates around the previous tank site.

1.05 SPECIAL CONSTRUCTION REQUIREMENTS

A. The Great Smoky Mountains National Park is a visitor friendly environment.

1. Provide barriers to protect the public and control visitor access.

2. Coordinate with Park when large vehicles will enter the Park.

05/18/2017 01100 Summary of Work - 3 of 4

1.06 SAFETY

A. All aspects of jobsite safety are the responsibility of the contractor.

Sub-contractors, regardless of being an excluded party (i.e. owner of company), are required to follow all Federal, State, and Local safety laws. This includes, but is not limited to;

1. Fall Protection

2. Trench Safety

3. Hard hats

4. Eye Protection

1.07 DISTURBED AREAS

A. All areas that are disturbed by the contractor are to be returned to their original condition or better. This includes, but is not limited to;

1. Sidewalks

2. Roadways

3. Grass

4. Vegetation

END OF SECTION

05/18/2017 01100 Summary of Work - 4 of 4

This Page Intentionally Left Blank

05/18/2017 01270 Price & Payment.doc- 1 of 5

SECTION 01270

PRICE AND PAYMENT

A. Work covered by this section includes method of measurement and basis of payment for all divisions included.

B. Payment for the various items of the Schedules, as further specified herein, shall include all compensation to be received by the contractor for furnishing all tools, equipment, materials, labor, supplies, manufactured articles, transportation, and temporary facilities required to complete the work in accordance with contract documents including incidentals.

C. Respective prices and payment shall constitute full compensation for all work completed including incidentals.

D. All items not expressly listed as being provided by others that are necessary for the completion of work shall be furnished and installed by the contractor.

E. No payment shall be made for mobilization and demobilization of equipment.

1.02 ESTIMATED QUANTITIES

A. All quantities stipulated in the schedule or other contract documents are approximate and are to be used: (1) as a basis for estimating the probable cost of the work and (2) for the purpose of comparing the bids submitted.

B. The contractor shall be paid for actual quantities installed based on the quantities measured in the field as indicated below for unit price bid items or contractor shall be paid on a lump sum basis as indicated below for lump sum bid items. The actual amounts of work completed and materials furnished may differ from estimated quantities. The contractor shall make no claim for damages, anticipated profits, or otherwise, on account of differences between the estimated amounts and the actual amount of work performed and materials furnished.

1.03 SURVEY AND MEASUREMENTS

A. All quantity measurements shall be the responsibility of the contractor and will be verified by the COR.

B. All measurements and subsequent payments will be based on completed and accepted work performed in strict accordance with the drawings, specifications, and other contract documents.

05/18/2017 01270 Price & Payment.doc- 2 of 5

PART 2 – SCHEDULE ITEMS

2.01 GENERAL

A. Payment shall be full compensation to complete the work items in good faith, including incidental work.

B. In addition to the those things listed under each item, the unit price shall be full compensation for all of the following:

1. General requirements in Division 01, but not limited to the following.

a. Submittals

b. Record drawings

c. Schedules and Plans

2. Specific requirements in Division 02, including but not limited to the following (unless otherwise expressly defined as a line item in the bid schedule):

a. Erosion control

b. Clearing and grubbing

c. Removal and replacement of obstructions

d. Associated trenching, excavation and backfill including the removal of any nuisance water, bedding, haunching, and compaction.

e. Disposal of any excess material

f. Traffic control

g. Rough grading

h. Finish work, where called for, including finish grading, topsoiling, and landscaping

2.02 ITEMS

A. Water Tank

1. Construct two (2) 45,000 Gallon Steel Water Storage Tanks

a. Measurement: By the Lump Sum for the required work to install the water storage tanks, including but not limited to tank foundation, internal tank piping, exterior piping & appurtenances within five feet of the tank foundation, vents, hatches, ladder, lining and all other tank appurtenances. The Owner shall accept bids of both bolted and welded steel tanks. Cost of videotaping and providing three (3) complete videotapes of the work area prior to beginning any construction shall be included in the bid price.

05/18/2017 01270 Price & Payment.doc- 3 of 5

b. Basis of Payment: Includes all labor, materials, equipment, tools and all other appurtenances required to complete the installation of the water storage tank, including but not limited to tank foundation, internal tank piping, exterior piping & appurtenances within five feet of the tank foundation, vents, hatches, ladder, lining and all other tank appurtenances.

2. 8” Class 350 Ductile Iron Pipe

a. Measurement: Linear feet of pipe installed measured horizontally over the centerline of the pipe.

b. Basis of Payment: Includes all pipe, bedding material, excavation, concrete thrust block, trench stabilization, fittings, flushing, disinfection, pressure testing, warning tape, tracing wire, and all other appurtenances required to complete the work as specified.

3. 6” Class 350 Ductile Iron Pipe

b. Basis of Payment: Includes all pipe, bedding material, excavation, concrete thrust block, trench stabilization, fittings, flushing, disinfection, pressure testing, warning tape, tracing wire, and all other appurtenances required to complete the work as specified.

4. 4” Class 350 Ductile Iron Pipe

b. Basis of Payment: Includes all pipe, bedding material, excavation, trench stabilization, fittings, flushing, disinfection, pressure testing, warning tape, tracing wire, and all other appurtenances required to complete the work as specified.

5. 4” Gate Valve and Valve Box

a. Measurement: Installation of each gate valve and valve box to proposed waterline. Payment will be made at the Contract Unit Price per valve installed.

valves.

05/18/2017 01270 Price & Payment.doc- 4 of 5

6. 6” Gate Valve and Valve Box

a. Measurement: Installation of each gate valve and valve box to valves.

7. 8” Gate Valve and Valve Box

a. Measurement: Installation of each gate valve and valve box to valves.

8. Install Fencing & Barriers

a. Measurement: By the Lump Sum for the required work to install new perimeter fencing and gates as designated in the Construction Plans.

Included in the price for bid shall be all temporary fencing and barriers as required in these specifications.

all other appurtenances required to install perimeter fencing, barriers, and gates.

9. Connection to Existing System

a. Measurement: By the Lump Sum for connection to the existing water system, including both influent and effluent lines. Payment for the removal and replacement of the existing Pressure Reducing Valve (PRV) with a tee fitting shall be paid under this item. Cutting and capping of existing retired lines shall be paid under this item.

all other appurtenances required to complete the connection to the existing water system, cut and cap existing retired lines, and removal and replacement of the existing PRV.

05/18/2017 01270 Price & Payment.doc- 5 of 5

10. Demolition of Existing Water Storage Tanks

a. Measurement: By the Lump Sum for the removal of the tanks, foundation, fencing, grading the site for parking, compacted gravel, and other appurtenances.

all other appurtenances required to complete the removal of the tank, foundation, fencing, grading, and compacted gravel area.

11. Temporary Erosion Control

a. Measurement: By the Lump Sum for work required for the installation, maintenance, and removal of all necessary erosion control devices, including but not limited to silt fence, check dams, culvert protection devices, and fiber rolls.

all other appurtenances required for erosion control measures.

12. Earthwork, Site Excavation, Grading & Access Road

a. Measurement: By the Lump Sum for work required to clear and grub site, excavate, grade the site to the proposed grade, install drainage features and headwalls, install slope stabilization material, and construct the gravel access road. Earthwork and grading shall adhere to the soils report provided to the Contractor.

all other appurtenances required to complete all site work and clearing and grubbing.

B. Schedule A Bid Option 1 –

13. Water Storage Tank Interior Upgraded Lining

a. Measurement: By the Lump Sum for the required work to install the Tank Lining.

all other appurtenances required to spray line the inside of the tank.

05/18/2017 01270 Price & Payment.doc- 6 of 5

PART 3 – EXECUTION (N/A)

05/18/2017 01310 Project Management and Coordination.doc Page 1 of 2

SECTION 01310

PROJECT MANAGEMENT AND COORDINATION

A. Section includes the preconstruction conference, construction scheduling and coordination requirements.

1.02 PRE-CONSTRUCTION CONFERENCE

A. Required after award of contract and prior to start of construction.

B. Representatives from the following shall attend.

1. Prime Contractor

2. Subcontractors

3. Owner

C. Contracting Officer/ COR will arrange a date that is mutually acceptable to all parties planning to attend.

D. Contractor shall notify subcontractors of time and date of meeting.

1.03 CONSTRUCTION SCHEDULE

A. Present project engineer with a written preliminary construction schedule (Critical Path Method) containing start and completion dates of the major items at the preconstruction meeting.

B. Notify the COR three full working days in advance of any construction.

C. Communicate major changes to the schedule to the COR in writing.

1.04 COORDINATION WITH OTHER CONTRACTORS/UTILITIES

A. Coordinate work with other contractors (i.e. roads, building, etc) in the area as necessary to complete the work specified.

B. Coordinate work with local utilities (i.e. water and sewer, power, telephone).

Note: All buried utilities may not be shown on the plans. The Contractor is responsible for having utilities marked prior to construction.

05/18/2017 01310 Project Management and Coordination.doc Page 2 of 2

05/18/2017 01330 Submittal Procedure - 1 of 2

SECTION 01330

SUBMITTAL PROCEDURE

A. This section includes information on submittal procedures. Materials requiring submittal are listed in the appropriate specification section.

1.02 SUBMITTAL PROCEDURES

A. Submit 4 copies of submittals to the COR, unless requested otherwise.

B. Identify each cut sheet or shop drawing with the following information:

1. Contract number.

2. Supplier.

3. Specification section to which the submittal pertains.

C. Submit the following information, as applicable:

1. Manufacturer’s cut sheets indicating compliance with references (e.g.

applicable ASTM, AWWA standards).

2. Laboratory results, as applicable.

3. Dimensional drawings or shop drawings, as applicable.

4. Other information necessary for the Project Engineer to determine compliance with the specifications.

D. Variations from the contract documents or products specified:

1. Bring any and all submitted variations to the attention of the Contracting Officer.

2. Variations not brought to the Contracting Officer‘s attention, in writing, and that conflict with the Contract Documents, do not relieve the contractor from the requirements of the contract documents.

E. Revise and resubmit submittals as required and identify all changes made since previous submittal.

1. No additional contract time will be given for resubmittals required as a result of the contractor submitting incomplete or rejected submittals.

F. Distribute copies of reviewed submittals to concerned parties, (i.e. suppliers, sub-contractors).

05/18/2017 01330 Submittal Procedure - 2 of 2

G. Submit written communication of any inability to comply with the Project Engineer’s comments.

H. Submit information to the Contracting Officer at least three weeks in advance of the work to be performed.

I. Approval of submittals must be provided by the Contracting Officer prior to installation of materials.

1.03 DEFINITIONS

A. Approved: Deemed to be acceptable for use in accomplishing the requirements of the plans and specifications, but does not extend to the means, methods, or procedures of construction (except where specific means, methods, or procedures are specifically required by the contract documents) and does not imply approval of the system or construction in which the submitted item is a part.

B. Conditionally Approved: Deemed to be acceptable for use in accomplishing the requirements of the plans and specifications, if the conditions noted in the submittal approval letter are met. The approval does not extend to the means, methods, or procedures of construction (except where specific means, methods, or procedures are specifically required by the contract documents) and does not imply approval of the system or construction in which the submitted item is a part.

C. Rejected: Deemed unacceptable for the use for which it was submitted.

D. Incomplete Submittal: Information is insufficient to ascertain acceptability.

Neither approval nor rejection is implied.

05/17/2017 01430 Quality Assurance.doc - 1 of 2

SECTION 01430

QUALITY ASSURANCE

A. This section includes prerequisites and procedures to assure the quality of construction.

1.02 CONTRACTORS QUALIFICATIONS

A. Work shall be performed by a registered contractor in the state where the project is proposed and for the type of construction and magnitude of construction being performed.

1.03 INSTALLER QUALIFICATIONS

A. Work shall be performed under the direction of personnel licensed in the state where the project is proposed and where licensing of the trade is regulated by the state including, but not limited to, plumbing, well drilling, septic system installation, HVAC, and electrical work.

B. Where no license is required, work shall be performed under the direction of personnel certified by the manufacturer of the product where applicable.

1.04 CONTROL OF INSTALLATION

A. Review materials for acceptability when delivered to the site.

B. Store and handle materials to prevent damage.

C. Review materials, services, and workmanship to ensure that work is performed in accordance with the specifications.

D. Comply fully with manufacturers’ instructions.

E. Should manufacturers’ instructions conflict with contract documents, request clarification from Project Engineer before proceeding.

F. Correct defective work to the satisfaction of the Contracting Officer.

1.05 SAMPLES

A. When requested by the Contracting Officer, supply samples of materials proposed for use.

05/17/2017 01430 Quality Assurance.doc - 2 of 2

1.06 START-UP

A. Prior to start-up, ensure that all equipment is ready for its use, as designed.

B. Ensure that all power sources are balanced and ready for use.

C. Provide the services of manufacturers’ field representative for start-up, testing, and adjustment of all major equipment items.

D. Provide reports from the manufacturer, including their observations and documentation of workmanship to the Contracting Officer within 30 days of manufacturer’s visit, unless a sooner response is required by the applicable specification section.

E. Work will not be considered complete until all systems and subsystems have been tested for proper functionality and proper adjustment.

1.07 WARRANTY

A. Provide a minimum one (1) year warranty for all materials and labor, covering defects in the materials or deficiencies resulting from contractor installation.

Warranty period shall begin on the date of final acceptance of all completed work.

B. Provide additional warranties as required by specific sections.

05/19/2017 01560 Barriers.doc - 1 of 4

SECTION 01560

BARRIERS

PART 1 GENERAL

A. The work of this section consists of furnishing, installing, and maintaining barriers to protect existing facilities and the public from construction operations

1.02 SUBMITTAL

A. Barrier Plan

PART 2 PRODUCTS

2.01 GENERAL

A. Material may be new or used, but shall be suitable for intended purpose. Fences and barriers shall be structurally adequate and neat in appearance.

2.02 FENCING

A. Security Fence: Use around staging area and stock pile area. Chain link, 2-inch mesh, minimum height, 6 feet. Posts shall have portable bases and shall not be installed in the ground.

B. Safety Barrier Fence: Use around all other improvement areas unless otherwise directed by the Contracting Officer. Orange plastic fence, minimum height, 4 feet.

2.03 BARRICADES AND SIGNS

A. Portable Jersey Barriers: Barriers shall be filled with water or sand to the manufacturer’s recommended levels.

B. Manual on Uniform Traffic Control Devices (MUTCD), Part VI, latest edition.

2.04 LUMBER

A. Free of nails, large knot holes and splinters.

05/19/2017 01560 Barriers.doc - 2 of 4

2.05 BARRIER TAPE

A. Banner Guard, imprinted with "DANGER", manufactured by Reef Industries, Inc., Houston, Texas, or approved equal.

PART 3 EXECUTION

3.01 PROTECTION OF PUBLIC

A. Fence, barricade, or otherwise block off the immediate work area to prevent unauthorized entry.

B. Protect pedestrian traffic by barricades or fences.

C. When pedestrian traffic is detoured around construction site, provide temporary walkways with protection as required at ends. For walkways, use lumber running parallel to direction of traffic movement and provide ramps at changes of elevation.

D. Cover pipes, hoses, and power lines crossing sidewalks and walkways with troughs using beveled edge boards.

E. Erect and maintain sufficient detour signs at road closures and along detour routes.

3.02 SECURITY FENCES

A. Before starting work, install all security fence and barriers.

B. Locate vehicular gates to avoid interference with traffic on public thoroughfares.

C. Locate pedestrian entrance gates as required to provide controlled personnel entry.

D. Chain link fence may be installed (Contractors option) in the following locations:

1. Use around staging area and stock pile area.

E. 4’ Safety Barrier fence shall be installed in the following locations:

1. Areas of the work site as contractor or COR deems necessary for safety and protection of work area.

05/19/2017 01560 Barriers.doc - 3 of 4

3.03 PORTABLE JERSEY BARRIERS

A. Install jersey barriers in locations directed by the COR. Barriers shall be filled with water or sand to the manufacturer’s recommended levels.

B. Barriers shall remain in place until project completion. Unless instructed otherwise by the Contracting Officer.

3.04 BARRIER TAPE

A. Install where directed by Contracting Officer. Keep a minimum of two rolls on site at all times.

3.05 REMOVAL

A. Completely remove barriers no longer needed when approved by Contracting Officer.

05/19/2017 01560 Barriers.doc - 4 of 4

05/19/2017 01600 - Material and Equipment.docx Page 1 of 2

SECTION 01600

MATERIAL AND EQUIPMENT

PART 1 GENERAL

A. The work of this section consists of the general procedures for handling, storing, and protecting material and equipment.

1.02 TRANSPORTATION AND HANDLING

A. Arrange deliveries of materials in accordance with construction schedules;

coordinate to avoid conflict with work and conditions at the site. Deliver materials in undamaged condition, in manufacturer's original containers or packaging, with identifying labels intact and legible. Contractor is encouraged to obtain materials in biodegradable or recyclable/reusable packaging which uses the minimum amount of packaging possible.

B. Newfound Gap Road, Route 441, is closed to commercial truck traffic. All deliveries in commercial vehicles shall take the shortest route through the Park to their destination. (i.e. Deliveries to Cades Cove will enter the Park through the Townsend entrance). Contractor shall ensure that companies making deliveries are aware of the restrictions.

1.03 STORAGE AND PROTECTION

A. Store materials in accordance with manufacturer's instructions, with seals and labels accessible for inspection.

1. Materials stored on-site are the responsibility of the contractor. Items lost, stolen or damaged are the contractors responsibility until the items are installed AND accepted by the Contracting Officer. A material payment does not constitute acceptance of materials.

B. Exterior Storage:

1. Store products subject to damage by the elements in weather tight enclosures.

2. Store fabricated products above the ground, on blocking or skids; prevent soiling or staining. Cover products subject to damage or deterioration with impervious sheet coverings; provide adequate ventilation to avoid condensation.

C. Protection after Installation:

1. Provide adequate coverings as necessary to protect installed materials from damage resulting from natural elements, traffic, and subsequent

05/19/2017 01600 - Material and Equipment.docx Page 2 of 2

05/19/2017 01770 Project Closeout.doc Page 1 of 2

SECTION 01770

PROJECT CLOSEOUT

A. This section describes the requirements for final cleanup, closeout submittals and final inspection.

1.02 RELATED WORK

A. Section 01430 – Quality Assurance

1.03 DELIVERY

A. Provide all closeout submittals meeting these requirements and any specific requirements of each section.

B. All closeout submittals must be received in a correct and complete manner before final payment can be made.

1.04 DEFINITIONS

A. Record Drawing: A drawing showing the actual installation of facilities, showing changes from the plans, and showing detail enough that future persons can readily locate all objects.

B. Ties: Measurements from permanent easily located objects to an installed object.

PART 2 – PRODUCTS

2.01 CLEANING MATERIALS

A. As recommended by the manufacturer of surface to be cleaned.

PART 3 - EXECUTION

3.01 CLEANING

A. Before scheduling the final inspection, remove all tools, equipment, surplus materials, and rubbish. Restore or refinish surfaces that are damaged due to work of this contract to original condition. Remove grease, dirt, stains, foreign materials, and labels from finished surfaces.

Thoroughly clean building interiors. Pick up all construction debris from

05/19/2017 01770 Project Closeout.doc Page 2 of 2 the site. At time of final inspection, project shall be thoroughly clean and ready for use.

3.02 WARRANTIES

A. Submit all warranty information regarding the materials installed.

B. Minimum warranty information is listed in Section 01430. Specific warranties may be required for each Section of specifications.

3.03 OPERATION AND MAINTENANCE INFORMATION

A. Submit all operation and maintenance information as included in the packaging from the manufacturer regarding the materials installed.

05/19/2017 02050 Demolition - 1 of 2

SECTION 02050

DEMOLITION

A. This section includes the demolition and disposal of existing structures and pipelines.

A. Section 02310 – Grading B. Section 02315 – Excavation, Trenching and Backfill C. Section 02370 – Temporary Erosion and Sediment Control D. Section 02606 – Mineral Aggregate Base E. Section 02920 – Topsoiling, Seeding, Fertilizing and Mulching

PART 2 – PRODUCTS (Not applicable)

3.01 GENERAL PROCEDURES

A. Conduct demolition work in accordance with appropriate Federal, State and Local requirements.

B. All disposal of materials must have proper receipts, documentation, etc.

showing it was disposed of properly.

3.02 EXISTING WATER TANKS

A. Remove entire structures including steel and concrete foundations.

B. Remove existing underground piping, valves, and other subsurface appurtenances within 5’ of the existing water storage tank.

C. Once site materials have been removed, Contractor shall grade the areas effected and place gravel over disturbed. Grading specifications shall adhere to Section 02310. Gravel specifications shall adhere to Section 02606.

3.03 EXISTING FENCING

A. Fencing, posts, gates, and any associated concrete shall be removed.

05/19/2017 02050 Demolition - 2 of 2

05/19/2017 02310 Grading - 1 of 5

SECTION 02310

GRADING

A. This section includes rough and finished site grading of all areas disturbed during construction.

A. Section 02050 – Demolition

C. Section 02370 – Temporary Erosion and Sediment Control D. Section 02920 – Topsoiling, Seeding, Fertilizing and Mulching

1.03 EXISTING CONDITIONS

A. Known underground, surface, and aerial utility lines and buried objects are indicated on the Drawings.

1.04 SITE COMPACTION TESTING

A. Testing of compacted fill materials shall be performed by an independent testing laboratory appointed and paid for by the Contractor.

B. When work of this section or portions of Work are completed, notify the testing laboratory to perform density tests. Do not proceed with additional portions of work until results have been verified.

C. If, during progress of work, tests indicate that compacted materials do not meet specified requirements, remove defective work, replace and retest at no cost to Owner.

D. Ensure compacted fills are tested before proceeding with placement of surface materials.

1.04 SAMPLES

A. Submit minimum 10 lb samples of each type of additional fill material to be used. Forward samples to testing laboratory, packed tightly in containers to prevent contamination.

05/19/2017 02310 Grading - 2 of 5

B. If recent test results are available for fill materials to be used, disregard samples submission and submit such test results to the testing laboratory for approval. Such test results are to clearly indicate types of materials and composition, hardness, compactability, and suitability for proposed usage.

1.05 PROTECTION

A. Protect trees, shrubs, lawns, rock outcroppings, and other features remaining as part of final landscaping.

B. Protect bench marks, and existing structures, fences, roads, sidewalks, paving and curbs against damage from equipment and vehicular traffic.

C. Protect aerial, surface, or underground utility lines or appurtenances which are to remain.

D. Repair damage.

1.06 FINISH GRADING

A. Uniformly grade areas within the limits of site grading under this section, including adjacent transition areas. Smooth finished surfaces within specified tolerances, compact with uniform levels or slopes between points where elevations are shown, or between such points and existing grades.

B. The degree of finish required for general site grading will be that ordinarily obtainable from either blade-grader or scraper operations.

C. Fine grading of finished areas be graded smooth and hand raked to meet the elevations and contours to within 0.10’ of finish grade shown on the drawings.

Lumber, earth clods, rocks and other undesirable materials shall be removed from the site.

2.01 MATERIALS

A. Excavated Fill Material: Soil free from roots, rocks larger than 2", and building debris.

B. Additional Fill Material: AASHTO Designation M145, soil classification group

A-6 or better.

C. Topsoil: Imported topsoil shall be friable loam free from subsoil, roots, grass, excessive amount of weeds, stones and foreign matter; acidity range (pH) of

5.5 to 7.5; containing a minimum of 4 percent and a maximum of 25 percent

05/19/2017 02310 Grading - 3 of 5 organic matter. Use topsoil stockpiled on site does not need to meet these requirements.

3.01 ROUGH GRADING

A. Grade the area in the vicinity of the excavation to prevent surface water from flowing into the excavation.

B. Maintain existing drainage.

C. Establish and identify required lines, levels, contours, and datum.

D. Maintain bench marks, monuments, and other reference points. Re-establish if disturbed or destroyed, at no cost to Owner.

E. Before start of grading, establish the location and extent of utilities in the work areas.

F. Maintain, protect, re-route, or extend as required existing utilities to remain which pass through the work area.

3.02 FINISH GRADING

A. SUB-SOIL PREPARATION

1. Rough grade sub-soil systematically to allow for a maximum amount of natural settlement and compaction. Eliminate uneven areas and low spots. Remove debris, roots, branches, stones, etc. in excess of 3 inches in size. Remove sub-soil which has been contaminated with petroleum products.

2. Bring sub-soil to required levels, profiles, and contours. Make changes in grade gradual. Blend slopes into level areas.

3. Cultivate sub-grade to a depth of 3 inches where topsoil is to be placed.

Repeat cultivation in areas where equipment used for hauling and spreading topsoil has compacted sub-soil.

4. Compact sub-soil to the following:

a. Under Topsoil: 85 percent modified Proctor, ASTM D1557.

05/19/2017 02310 Grading - 4 of 5

b. Under Streets, Drives, Water Storage Tank, and Parking Areas: 98 percent modified Proctor, ASTM D1557. Bring compaction out 18 feet from the outside edge of the tank foundation.

B. COMPACTION TESTING

1. Maximum Dry Density and Optimum Moisture Content: ASTM D 1557, Method Obtain samples where directed by the Engineer.

C. DITCHES

1. Finish ditches and swales to ensure proper flow and drainage. Conduct final rolling operations to produce a hard, uniform and smooth cross-section. Place rip-rap or erosion matting as noted on the plans.

D. Grade site to true grades as specified on the plans after all structures and piping have been installed.

E. Grade sites for effective drainage away from structures.

F. Dress and trim all slopes.

G. Round off the tops of slopes and toes of slopes.

H. Place topsoil a minimum 3 inches in thickness on all disturbed areas and seed or sod and mulch as soon as possible in accordance with Section 02920 – Topsoiling, Seeding, Fertilizing and Mulching.

05/19/2017 02310 Grading - 5 of 5

05/19/2017 02315 Excavation, Trenching & Backfill - 1 of 8

SECTION 02315

EXCAVATION, TRENCHING AND BACKFILL

A. This section includes the necessary clearing, grubbing, excavation, trenching and backfill necessary for the construction of the facilities as indicated on the plans including, but not limited to: water mains and service lines, sewer mains and service lines, concrete manholes, septic tanks, and other structures.

1.02 RELATED WORK (as applicable)

B. Section 02315 – Unclassified Excavation C. Section 02370 – Temporary Erosion And Sediment Control D. Section 02510 – Water Distribution E. Section 02511 – Water Service Lines F. Section 02705 – Road Restoration G. Section 02920 – Topsoiling, Seeding, Fertilization and Mulching

1.03 REFERENCES

A. Manual on Uniform Traffic Control Devices, latest edition.

B. ASTM D698 – Test Methods for Moisture Density Relations of Soils and Soil-

Aggregate Mixtures Using 5.5 lb. Rammer and 12-in. Drop [Standard Proctor Test].

C. ASTM D2321 – Underground installation of Flexible Thermoplastic Sewer

Pipe.

D. ASTM D2487 – Classification of Soils for Engineering Purposes [Unified Soil

Classification System].

1.05 DEFINITIONS

A. Bedding, Haunching and Initial Backfill zones as defined herein and on the standard thermoplastic pipe trench detailed drawing below.

05/19/2017 02315 Excavation, Trenching & Backfill - 2 of 8

B. Soil Materials as summarized in the table below and defined in ASTM D2321 and ASTM D2487

Description and Comparison of Soil Material Classifications

ASTM D2321 ASTM D2487

Class Type

USCS

Group Symbol Description

IA Manufactured aggregates: ¼ to 1 ½ inch open graded, clean.

* None Closest to “Poorly graded gravel (GP)”

IB Manufactured aggregates: ¼ to 1 ½ inch dense graded, clean.

* None Closest to “Poorly graded gravel with sand (GP)”

II

Coarse sands and gravels with maximum particle size of

1 ½ inch, clean.

GW Well-graded gravels and gravel-sand mixtures; little or no fines.

GP Poorly graded gravels and gravel sand mixtures;

little or no fines.

SW Well-graded sands and gravelly sands; little or no fines.

SP Poorly graded sands and gravelly sands; little or no fines

Coarse sands and gravels with maximum particle size of 1 ½ inch, borderline clean.

GW-GC

SP-SM

Etc.

Sands and gravels which are borderline between clean and with fines

III

Fine sand and clayey gravels.

GM Silty gravels, gravel-sand-silt mixtures.

GC Clayey gravels, gravel-sand-clay mixtures SM Silty sands, sand-silt mixtures SC Clayey sands, sand-clay mixtures

IV

Fine grained soils (inorganic)

ML Inorganic silts and very fine sands, rock flour, silty or clayey fine sands, silts with slight plasticity.

CL Inorganic clays of low to medium plasticity, gravely clays, sandy clays, silty clays, lean clays.

MH Inorganic silts, micaceous or diatomaceous fine sandy or silty soils, elastic silts.

CH Inorganic clays of high plasticity, fat clays.

05/19/2017 02315 Excavation, Trenching & Backfill - 3 of 8

V

Organic soils

OL Organic silts and organic silty clays of low plasticity.

OH Organic clays of medium to high plasticity, organic silts.

PT Peat and other high organic soils.

* USCS system is limited to naturally occurring soils. Manufactured aggregates not covered.

2.01 BEDDING, HAUNCHING AND INITIAL BACKFILL MATERIAL

A. Class I, Class II or Class III, utilized in accordance with restrictions described in Part 3 - Execution.

3.01 GENERAL

A. Trenching and excavation work shall be done in accordance with proper emphasis on safety as determined by the contractor to conform to recommended safety standards such as OSHA 1910 and 1926.

B. Obtain all permits from appropriate road agency for construction within road right of way.

C. Repair damage resulting from settlement, slides, cave-ins, water pressure, and other causes.

D. Provide adequate signs, barricades, fences and amber lights and take all necessary precautions to protect the work and the safety of the public in all construction areas.

1. Placement of construction signs and barricades shall conform to the

“Manual on Uniform Traffic Control Devices, latest edition.”

2. Protect barricades and obstructions at night by amber signal lights that burn from sunset to sunrise. Barricades shall also be of substantial construction, painted white or with reflective paint to increase their visibility at night.

3. Perform work without obstruction to traffic or inconvenience to the general public and the residents in the vicinity of the work.

E. Road Crossing

05/19/2017 02315 Excavation, Trenching & Backfill - 4 of 8

1. Comply with all construction and material requirements of roadway authorities having jurisdiction.

2. Maintain one lane of traffic open at all times.

3. Refer to Section 02705 – Road Restoration for backfill and restoration requirements.

3.03 EXCAVATION

A. Remove trees and stumps from excavation and site.

B. Remove and stockpile existing topsoil.

C. Install facilities as staked unless otherwise approved by Project Engineer.

D. Maintain surface drainage away from trenching or excavation.

E. Remove unsuitable foundation materials from excavation as shown on the plans or as authorized by the Project Engineer.

F. Maintain a minimum 1-foot clearance between outer surface of structure being installed and wall of excavation.

G. No additional payment shall be made for encountered rock, refer to Section

02316 – Unclassified Excavation.

3.04 TRENCHING

A. Bottom width: No less than 12 inches or more than 24 inches wider than the outside diameter of the pipe.

B. Depth: Provide minimum cover as specified, or depths shown on plans.

3.05 BEDDING

A. If existing soil cannot provide uniform, stable bearing support, over-excavate 6 inches below bottom of pipe or structure and provide bedding material.

B. Utilize Class I, II or III materials as appropriate for bedding as listed in Table below.

Use of Soils and Aggregate for Bedding Class IA Class IB Class II Class III General Excellent pipe support. Excellent Excellent pipe support. Good

Good pipe support. Fair

Reasonable pipe support. Poor

05/19/2017 02315 Excavation, Trenching & Backfill - 5 of 8 drainage. drainage. Minimizes migration of adjacent material.

drainage. drainage

Compaction Not required Not required Required 90% of Standard Proctor.

Required 90% of Standard Proctor.

Wet Conditions (below current or future water table). Rock Cuts

Acceptable. Must use same material for Haunching.

Acceptable. Must use same material for Haunching.

Acceptable. Clean groups only suitable for drainage blanket.

Not- Acceptable

Dry Conditions Acceptable Acceptable Acceptable Acceptable

3.06 HAUNCHING AND INITIAL BACKFILL

A. General

1. Provide complete and uniform bearing and support for the pipe, including allowance for bell holes, or structure.

2. Work material under and around the pipe to ensure full pipe support.

3. Prevent movement of the pipe during placement of material.

4. Avoid contact between the pipe and mechanical compaction equipment.

B. Utilize Class I, II or III materials as appropriate for haunching and initial backfill as listed in Table below. No frozen materials or frozen clods.

Use of Soils and Aggregate for Haunching and Initial Backfill Class IA Class IB Class II Class III General Excellent pipe support. Excellent drainage. Install to a minimum of 6” above the pipe crown.

Excellent pipe support. Good drainage. Minimizes migration of adjacent material. Install to a minimum of 6” above the pipe crown.

Good pipe support. Fair drainage. Install and compact to a minimum of 6” above the pipe crown.

Reasonable pipe support. Poor drainage. Install and compact to a minimum of 6” above the pipe crown.

Compaction Not required Not required Required 85% of Standard Proctor.

6 inch maximum lifts.

Required 90% of Standard Proctor.

6 inch maximum lifts.

Wet Conditions (below current or future water table). Rock Cuts

Acceptable. Must use same material for Bedding.

Extend Haunching to the top crown of the pipe.

Acceptable. Must use same material for Bedding. Extend Haunching to the top crown of the pipe.

Acceptable. Clean groups only suitable for drainage.

Not- Acceptable

Dry Conditions Acceptable Acceptable Acceptable Acceptable

05/19/2017 02315 Excavation, Trenching & Backfill - 6 of 8

3.07 FINAL BACKFILL

A. Backfill remainder of excavation with native material, free from large clods, large stones, organic material or frost chunks.

B. Compact in 12-inch lifts to a density not less than the density of the surrounding undisturbed soil.

1. Compact with a mechanical tamper to a density not less than 90% of the maximum dry density, determined by ASTM D 698.

2. Provide 4 feet minimum cover over the top of the pipe before utilization of hydrohammer compaction equipment.

3. Provide 3 feet minimum of backfill over the pipe before wheel loading the trench.

C. Conform to Section 02705 – Road Restoration for backfill requirements under roadways.

D. Backfill and compact around manholes, valve boxes, and other appurtenances in 12-inch lifts.

1. Compact with a mechanical tamper to a density not less than 90% of the maximum dry density, determined by ASTM D 698.

E. Backfill around septic tanks in 18-inch lifts.

1. Compact in a manner that will not produce undue strain on the tank.

2. Compaction may be accomplished with the use of water, provided the material is thoroughly wetted from the bottom up, and the tank is filled with water to prevent floating.

F. Repair any trenches improperly backfilled or where settlement occurs, then refill and compact.

G. Restore surface to the required grade and compaction. Conform to Section

02310 – Grading for rough grading, finish grading and site surface drainage.

H. Remove all surplus backfill materials to a location approved by the Engineer.

05/19/2017 02315 Excavation, Trenching & Backfill - 7 of 8

3.08 REMOVAL OF NUISANCE WATER

A. Remove nuisance water entering the trenches. Nuisance water that can be removed through the use of sump or trash pumps is not considered dewatering.

B. Keep trenches free from water until the facilities are in place, sealed against the entrance of water, and backfill has been placed and compacted above the water level.

3.09 LOCATE EXISTING UTILITIES

A. Field locate all existing underground utilities.

1. Utilize state “811”,“dig-safe” or “one-call” hotlines.

2. Contact all other utility owners not covered by the state “dig safe” hotlines.

3.10 UTILITY CONFLICTS

A. Protect existing utilities from damage during excavation and backfilling operations.

B. Provide temporary support for existing water, gas, telephone, power, or other utility services that cross the trench until backfilling of trench is complete

1. Compact backfill to 95% of Standard Proctor Density under disturbed utilities.

2. Repair or replace any damaged existing utilities, at no additional cost to the project.

C. Water and sewer main crossing and parallel installation

1. Maintain a 10 foot horizontal separation (O.D. to O.D.) for parallel mains.

2. Upon approval by the Engineer, water and sewer mains may be installed closer than 10 feet, provided all of the following conditions;

a. Vertical separation is 18 inches (O.D. to O.D.)

b. Water main is above the sewer main.

c. Separate trenches are maintained.

3. Maintain a minimum 18-inch vertical separation (O.D. to O.D.) for crossing mains.

05/19/2017 02315 Excavation, Trenching & Backfill - 8 of 8

a. Lay pipe with joints equidistant from the point of crossing.

4. If it is impossible to meet any of the above separation distances and deviations, one of the following methods shall be adhered to.

a. Sewer main shall be constructed to water main pressure pipe standards, and successfully pass a 150-psi pressure test prior to backfilling.

b. Either the water main or the sewer main may be encased in a watertight carrier pipe that extends 10 feet on both sides of the crossing. The carrier pipe shall be of materials approved by the regulatory agency for use in water main construction.

D. Water and sewer service crossing and parallel installation.

1. Maintain a 30-inch horizontal separation from water and sewer services.

2. Maintain a 12-inch vertical separation for crossing water and sewer services.

3. Water service line splices or joints will not be permitted within 10 feet of a sewer line crossing.

3.12 MOVING FENCES AND MINOR STRUCTURES

A. Remove and reset culverts, drainage pipes or other minor structures that fall within the alignment of the new construction, to their original location and grade.

B. Visit the project site and determine actual conditions with regard to the existence of old car bodies, abandoned houses, fences, driveways, trees, stumps, brush, sidewalks, approaches, and other miscellaneous obstacles to

1. Unless specifically referenced in a bid item, no separate payment will be made for the removal or replacement of these items.

05/19/2017 02316 Unclassified Excavation.doc - 1 of 5

SECTION 02316

UNCLASSIFIED EXCAVATION

A. The work called for by this section shall consist of clearing and grubbing, loosening, loading, removing, and disposing of, in the specified manner, all wet and dry materials (including rock) encountered that must be removed for construction purposes; furnishing, placing, and maintaining all sheeting, shoring, bracing, and timbering necessary for the proper protection and safety of the work, the workmen, the public, and adjacent property and improvements; the dewatering of trenches and other excavations; the preparation of satisfactory pipe beds; the backfilling and tamping of trenches, foundations, and other structures; the preparation of fills and embankments;

the removal of unsuitable material from outside the normal limits of excavation and, where ordered by the Owner, their replacement with suitable materials;

and all other grading or excavation work incidental to or necessary for the work. This work shall be performed as specified below.

A. Section 01119 – Revisions to Standard Specifications B. Section 02050 – Demolition

1.03 DEFINITION

A. REFERENCE STANDARDS

Unless otherwise indicated, all referenced standards shall be the latest edition available at the time of bidding. Any requirements of these Specifications shall in no way invalidate the minimum requirements of the referenced standards.

Comply with the provisions of the following codes and standards, except as otherwise shown or specified:

1. ASTM C3, Standard Specifications for Concrete Aggregate.

2. ASTM D698, Standard Test Methods for Moisture-Density Relations of

Soils and Soil-Aggregate Mixtures Using 5.5 lb. Rammer and 12" Drop.

3. ASTM D3282, Standard Recommended Practice for Classification of Soils and Soil-Aggregate Mixtures for Highway Construction Purposes.

05/19/2017 02316 Unclassified Excavation.doc - 2 of 5

4. Tennessee Department of Transportation, Tennessee Standard

Specifications for Road and Bridge Construction, January 1, 2015, and special provisions.

5. Erosion and Sediment Control Planning and Design Manual for State project is in.

B. UNAUTHORIZED EXCAVATION

Except where otherwise authorized, indicated, or specified, all materials excavated below the bottom of concrete walls, footings, slabs on grade, and foundations shall be replaced, by and at the expense of the Contractor, with concrete placed at the same time and monolithic with the concrete above.

C. EXISTING UTILITIES

Locate existing underground utilities in the area of work. If utilities are to remain in place, provide adequate means of protection during earthwork operations.

Should uncharted or incorrectly charted piping or other utilities be encountered during excavation, consult the COR immediately for directions as to procedure.

Cooperate with Owner and utility companies in keeping respective services and facilities in operation. Repair damaged utilities to the satisfaction of utility companies.

1.04 RESPONSIBILITIES

A. Protect adjacent utilities lines, property, and structures.

B. Repair damage caused by excavation operations.

C. Removal of excess material not used on site.

PART 2 – PRODUCTS (Not Applicable)

PART 3 – EXECUTION

3.01 PREPARATION OF THE SITE

A. Before starting construction, remove from the…