RSDO_Fire_4-Bay_Apron_2023_SOW.pdf

RSDO FIRE 4-BAY APRON 2023

SECTION 01009

GENERAL INFORMATION AND REQUIREMENTS

PART 1: GENERAL

1.1 SUMMARY

A. Description of Work: Furnish all labor, equipment, supplies, and materials necessary to construct the Rock Springs District Office Fire 4-Bay apron. Work consists of removing the old concrete pad, excavating, placing an aggregate base 12” in depth and placing one 80’W x 15’L x 8”D concrete pad with a 12” thickened edge.

B. Location: Work under this Contract is located at the Rock Springs

District Office, 280 Highway 191 North, Rock Springs, WY. 82901

1.2 REFERENCES

A. Referenced Specifications/Standards with Abbreviations and/or

Acronyms: Wherever the following acronyms are used in these specifications or on the drawings, they are to be construed the same as the respective expressions represented. Copies of the referenced specifications/standards referred to herein may be procured by the Contractor, from the following:

AASHTO American Association of State Highway and Transportation

Officials 444 North Capitol Street, N.W., Suite 249 Washington, DC 20001

ACI American Concrete Institute P.O. Box 19150 Detroit, MI 48219

ASME American Society of Mechanical Engineers 345 East 47th Street New York, NY 10017

ASTM American Society for Testing and Materials 100 Barr Harbor Dr.

West Conshohocken PA 19428-2959

CDA Copper Development Association, Inc.

P.O. Box 1840 Greenwich, CT 06836-1840

OSHA Occupational Safety and Health Administration

US Department of Labor 200 Constitution Ave., NW Washington DC 20210

WYDOT Wyoming Department of Transportation 5300 Bishop Blvd.

Cheyenne, WY 82009

1.3 DEFINITIONS

A. Approvals: Approval of the submittals is an indication that the

Contractor's submittals have been reviewed and that there are no objections, except as noted. Approval of deviations shall apply only to those deviations or omissions from the requirements of the drawings and specifications brought to the Contracting Officer's attention in writing. After approval of an item, submit a substitute for approval when the approved item cannot be purchased or delivered in time to avoid delay in completion of the project.

1.4 SUBMITTALS

A. Requirements: Refer to specific specifications sections for submittals required. Allow at least 5 working days for review.

Submittals shall be delivered to the Contracting Officer’s Representative.

B. Scope: Submittals include submission of:

1. Aggregate Crushed Base results as required in Section 03206 – Aggregate Crushed Base

2. Concrete test results as required in Section 03306 – Minor Concrete.

C. Requirements: Refer to specifications for submittals required. Allow at least 5 working days for review. Submittals shall be delivered to the Contracting Officer’s Representative.

1.5 QUALITY ASSURANCE

A. Codes and Standards: The work shall comply with codes and standards applicable to each type of work and as listed in the individual sections of these specifications. This Contract incorporates materials, applications, and tests by reference, with the same force and effect as when they were given in full text.

B. Conflict: Where a conflict occurs between reference documents and project specifications, the project specifications shall govern.

1.6 DELIVERY, STORAGE, AND HANDLING

A. Delivery: Protect products incorporated into the work from damage while in transit to the site. Products must be delivered in original unopened containers with manufacturer's name, brand designation, and contents legibly indicated.

B. Storage: Provide temporary storage facilities for products. Storage shall comply with the manufacturer's instructions. The storage area shall permit access for inspection and handling.

C. Handling: Load and unload products protecting them from damage.

1.7 PROJECT/SITE CONDITIONS

A. Access to the Work: Access to the work is via public roads.

B. Environmental Considerations:

1. The Contractor shall take appropriate precautions on the site to minimize creation of dust.

2. The Contractor shall be responsible for any damage to new or existing facilities, construction, equipment, etc., resulting from his own construction procedures. Any damage shall be repaired or replaced by the Contractor to the satisfaction of the Contracting Officer.

1.8 SEQUENCING AND SCHEDULING

A. Work Schedule: The Contractor shall submit a work schedule at the pre-work conference. When requested, submit an updated schedule within 3 calendar days. As a minimum, the estimated start and completion dates of the project and the intermediate start and end date of the site grading work shall be shown.

PART 2: PRODUCTS

There are no applicable requirements.

PART 3: EXECUTION

3.1 PROJECT MEETINGS

A. Pre-Work Conference:

1. Will be held prior to the start of work. The Contractor will be notified in advance of meeting time, date and place. The purpose will be to review required work, project drawings and specifications, construction schedules, payroll and payments, and administrative provisions of the Contract.

2. The Contractor, subcontractors and the persons responsible for coordination of the work shall be present at the meeting.

3. Be prepared to summarize and explain procedures planned for the project.

B. Progress Meetings:

1. To be held at the project site, or as determined by the

Contracting Officer.

2. May be called by either the Contracting Officer or the

Contractor. Request shall state who should attend and include an agenda.

C. Final Inspection:

1. To be held at the project site, or as determined by the Contracting Officer.

2. Notify the Contracting Officer in writing at least 5 working days before the completion date so the Government can schedule final inspection.

3. The superintendent shall be present during this inspection.

3.2 PREPARATION

A. Work Limits and Control Points: General work limits are as described in the project drawings. Grade control staking will be the responsibility of the Contractor.

3.3 DISPOSAL OF DEBRIS

A. Requirements: Items or debris not designated as salvage for the Government shall become the property of the Contractor. Dispose of materials in a legal manner and payment of any required disposal fees is the Contractor's responsibility.

PART 4: MEASUREMENT AND PAYMENT

4.1 METHOD OF MEASUREMENT

A. Units: The work described in this section will not be measured for payment.

4.2 BASIS OF PAYMENT

A. Payment: No direct payment for the work described under this section will be made. Consideration for this item shall be included in the bid price for other items of the Contract

END OF SECTION

SECTION 03106

DEMOLITION/EXCAVATION

1.1 SUMMARY

A. Section Includes: Furnishing all equipment, labor and supplies to remove the old concrete pad and excavate the area for the requirements of the new pad.

B. Related Sections:

General Information and Requirements Section 01009

1.2 SUBMITTALS

A. General: Submittals shall be according to Section 01009 - General Information and Requirements.

2.1 MATERIALS

A. Does not apply.

3.1 PREPARATION

A. Clearing: Area shall be clear of all old concrete, reinforcing steel, and any base underneath the old concrete pad. Asphalt edge will need to be cut back in order to fit forms for the thickened edge.

B. Disposal of Excavated Material: The Contractor shall remove and legally dispose of all unused material excavated from the site.

C. Subbase Preparation:

1. Subbase will be at the correct depth, as shown in the drawings, for the crushed base and new pad design.

2. Subbase in contact with crushed base shall have a smooth surface and be compacted to minimum of 90% maximum dry density as determined by AASTHO T99, Method C.

3.2 PROTECTION

A. Requirements: Protect surfaces from damage by equipment and/or other materials.

A. Units: The work described in this section will be measured and paid for as Lump Sum.

A. Payment: Prices and payment will be full compensation for the work described in this section. Payment will be made under:

Pay Item Pay Unit

03106 Demolition/Excavation Lump Sum

SECTION 03206

AGGREGATE CRUSHED BASE

1.1 SUMMARY

A. Section Includes: Furnishing and placing aggregate crushed base for the subgrade.

B. Related Sections:

General Information and Requirements Section 01009

1.2 SUBMITTALS

A. General: Submittals shall be according to Section 01009 - General

Information and Requirements.

1.3 QUALITY ASSURANCE

A. Causes for Rejection: Aggregate crushed base may be rejected for, but not limited to, the following reasons:

1. Does not conform to the WYDOT standard.

2.1 MATERIALS

A. Aggregate Crushed Base: New crushed base shall be imported and shall meet WYDOT grading “W”.

3.1 PREPARATION

A. Clearing: All locations to receive crushed base shall be thoroughly cleared of all vegetation or other organic matter.

B. Disposal of Excavated Material: The Contractor shall remove and legally dispose of all unused material excavated from the site.

C. Subbase Preparation: Subbase in contact with crushed base shall have a smooth surface and be compacted to minimum of 90% maximum dry density as determined by AASTHO T99, Method C.

3.2 AGGREGATE CRUSHED BASE PLACEMENT

A. Placement and Consolidation: Crushed Base shall be deposited as nearly as practical to its final position.

3.3 PROTECTION

A. Requirements: Protect surfaces from damage by equipment and/or other materials.

for by the cubic yard, based on the dimensions of the structure and the details shown on the drawings.

described in this section. Payment will be made under:

Pay Item Pay Unit

03206 Aggregate Base Cubic Yard

SECTION 03306

MINOR CONCRETE

1.1 SUMMARY

A. Section Includes: Furnishing and placing cast-in-place concrete, including formwork, dowl placement, and reinforcement.

B. Related Sections:

General Information and Requirements Section 01009

1.2 SUBMITTALS

A. General: Submittals shall be according to Section 01009 - General

Information and Requirements.

1.3 QUALITY ASSURANCE

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

1. Freezing within the first 3 days of placement

2. Excessive or inadequate slump

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

4. Honeycomb over 10% of the surface

5. Voids larger than 2 inches across

6. Exposed reinforcing steel

7. Misalignment of concrete

8. Substandard aggregate in the mix

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

PART 2: PRODUCTS

2.1 MATERIALS

A. Cement: Portland cement, Type II, according to ASTM C150. The use of caked or hardened cement will not be permitted.

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

C. Air-Entraining Admixture: ASTM C260. The amount of air shall be 5 percent.

D. Reinforcing Steel: Shall be new, clean billet steel in accordance with ASTM A615, Grade 60. The size of the bars shall be as indicated on the drawings.

E. Dowls: Shall be new, clean billet steel in accordance with ASTM A615, Grade 60. The size of the bars shall be as indicated on the drawings.

2.2 READY-MIXED CONCRETE

A. Requirements: Ready-mixed concrete shall be according to ASTM C94 and be designed for a 28-day compressive strength of 4000 psi, and a slump of 4 - 5 inches as determined by ASTM C143.

B. Maximum concrete temperature shall not exceed 80 degrees Fahrenheit.

C. Concrete will be glass fiber-reinforced concrete premix. See drawing for more information.

PART 3: EXECUTION

3.1 PREPARATION

A. Clearing: All locations to receive concrete shall be thoroughly cleared of all vegetation or other organic matter.

B. Form Construction: Construct forms to the sizes, shapes, lines, and dimensions shown on the drawings, to obtain accurate alignment, location, grades, and level and plumb surfaces. Form oil may be applied to facilitate removal of forms. Forms and subbase shall be wet before placement of concrete. NOTE: Asphalt edge will need to be cut back to fit forms for the thickened edge.

C. Form Inspection: Notify the Contracting Officer Representative 24 hr.

in advance of concrete placement to allow for inspection of forming concrete. Excess water shall be removed from the forms before concrete placement.

D. Reinforcing Steel: Reinforcement steel shall be held securely in position by steel wire, mortar blocks, metal chairs and other accessories required to securely support steel reinforcement during the placement of concrete. Minimum reinforcing steel cover shall be 12” O.C. on all surfaces. Reinforcing steel shall be contact lap splices with a minimum lap length of 40 bar diameters U.N.O.

Reinforcement steel shall be inspected by the Contracting Officer Representative before concrete is placed. NOTE: Refer to drawings for more information.

E. Dowl Installation: Dowls shall be installed in the existing concrete floor of the 4-bay structure. The location of the dowls shall be as indicated on the drawings.

3.2 CONCRETE PLACEMENT

A. Placement and Consolidation: Concrete shall be deposited as nearly as practical to its final position to avoid segregation of the aggregate.

A vibrator shall be used to consolidate the concrete; however, vibrators shall not be used next to the form or to move concrete.

B. 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.

3.3 CONCRETE FINISHING

A. Concrete Surface Finishes: The top surface of exterior slabs shall be given a broom-finish.

B. 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.

C. 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 point with portland cement mortar. Cure repairs the same as the concrete.

3.4 CONCRETE CURING

A. Application of Curing Cover: As soon as the concrete is finished or free water has disappeared from the surface, the surface shall be covered with a waterproof membrane or with material that keeps the surface from drying out. Curing shall continue for at least 7 days.

Alternate wetting and drying shall be avoided.

3.5 ASPHALT

A. Asphalt will be replaced with matching quality and quantity to the asphalt that was removed so as the new asphalt patch matches the existing asphalt pad.

3.6 FIELD QUALITY CONTROL

A. Testing: The Contractor shall arrange for a certified independent testing laboratory to test slump and air content on each load delivered to the site. One set of 2 cylinders shall be obtained during placement of concrete.

3.7 PROTECTION

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

for by the cubic yard, based on the dimensions of the structure and the details shown on the drawings. Reinforcing steel will not be paid for separately but is a part of the payment for concrete.

described in this section. Payment will be made under:

Pay Item Pay Unit

03300 Dowl Material/Installation Each 03306 Minor Concrete Cubic Yard