12837120Q0204 8.31.pdf

12837120Q0204

1. REQUEST NO.

5a. ISSUED BY

NAME

a. NAME

c. STREET ADDRESS

d. CITY

10. PLEASE FURNISH QUOTATIONS TO

THE ISSUING OFFICE IN BLOCK 5a ON

OR BEFORE CLOSE OF BUSINESS (Date)

2. DATE ISSUED 3. REQUISITION/PURCHASE REQUEST NO. 4. CERT. FOR NAT. DEF.

UNDER BDSA REG. 2

AND/OR DMS REG.1

RATING

6. DELIVERY BY (Date)

7. DELIVERY

9. DESTINATION

a. NAME OF CONSIGNEE

b. STREET ADDRESS

PAGE OF PAGES

5b. FOR INFORMATION CALL: (No collect calls)

TELEPHONE NUMBER

AREA CODE NUMBER

8. TO:

b. COMPANY

e. STATE f. ZIP CODE

c. CITY

d. STATE e. ZIP CODE

IMPORTANT: This is a request for information, and quotations furnished are not offers. If you are unable to quote, please so indicate on this form and return it to the address in Block 5a. This request does not commit the Government to pay any costs incurred in the preparation of the submission of this quotation or to contract for supplies or services. Supplies are of domestic origin unless otherwise indicated by quoter. Any representations and/or certifications attached to this Request for Quotations must be completed by the quoter.

11. SCHEDULE (Include applicable Federal, State and local taxes)

THIS RFQ

REQUEST FOR QUOTATION

(THIS IS NOT AN ORDER)

IS IS NOT A SMALL BUSINESS SET ASIDEX

08/31/2020 994369

1 1

333 BROADWAY SE

ALBUQUERQUE NM 87102

SOUTHWESTERN REGION

01/04/2021

USDA FOREST SERVICE

SAFFORD RANGER DISTRICT

711 S 14TH AVE SUITE D

SAFFORD

AZ 85546

602 225-5350DAVID WATSON

09/17/2020 1400 PT

FOB DESTINATION

OTHER

(See Schedule)X

ITEM NO.

(a)

SUPPLIES/SERVICES

(b)

QUANTITY

(c)

UNIT

(d)

UNIT PRICE

(e)

AMOUNT

(f)

Safford Engine Bay Replacement Period of Performance: 10/05/2020 to 01/04/2021

0001 Safford Engine Bay Replacement

Delivery: 01/04/2021

12. DISCOUNT FOR PROMPT PAYMENT

a. 10 CALENDAR DAYS (%) b. 20 CALENDAR DAYS (%) c. 30 CALENDAR DAYS (%) d. CALENDAR DAYS

NUMBER PERCENTAGE

NOTE: Additional provisions and representations

13. NAME AND ADDRESS OF QUOTER

b. STREET ADDRESS

c. COUNTY

d. CITY e. STATE f. ZIP CODE

14. SIGNATURE OF PERSON AUTHORIZED TO

SIGN QUOTATION

16. SIGNER

a. NAME (Type or print)

c. TITLE (Type or print)

a. NAME OF QUOTER

AREA CODE

NUMBER

15. DATE OF QUOTATION

b. TELEPHONE are are not attached

AUTHORIZED FOR LOCAL REPRODUCTION

Previous edition not usable

STANDARD FORM 18 (REV. 6-95)

Prescribed by GSA - FAR (48 CFR) 53.215-1(a)

SITE VISIT: SEPTEMBER 9, 2020 1000 AM

111 9th Street, Safford, AZ 85546 (Township 7 South, Range 26 East, Section 17)

In accordance with the Miller Act Bid (20%),Performance (100%), and Payment Bonds (100%) are required. In accordance with FAR 36.204(f), the construction magnitude of this project is estimated between $150,000.00 to $200,000.00.

NAICS: 236220 SIZE STANDARD: $39.5M TOTAL SMALL BUSINESS SET ASIDE

Pay Item Description

Method of Measurement

Est.

Quantity

Pay Unit

Unit Price Total

1 Mobilization LSQ 1 LSQ

2 Building Demolition LSQ 1 LSQ

3 Engine Bay (E.B.) Building LSQ 1 LSQ

4 E.B. Foundation and Slab LSQ 1 LSQ

5 Electrical for E.B. LSQ 1 LSQ

6 Heating and Cooling for E.B. LSQ 1 LSQ

7 Swamp Cooler Relocation LSQ 1 LSQ

Total

Optional Bid Items

8 Covered Parking (C.P.) Structure LSQ 1 LSQ

9 C.P. Footers LSQ 1 LSQ

Total

Designated Method of Measurement:

DQ - designated quantities; AQ - actual quantities; LSQ - lump sum quantities

NOTE: Required work shown on the drawings and described in the specifications and not listed on this

Schedule of Items shall be considered incidental to other pay items.

Schedule Of Items (SOI)

SAFFORD ENGINE BAY REPLACEMENT

SPECIFICATIONS

FOR

SAFFORD ENGINE BAY

REPLACEMENT

ii iii

TABLE OF CONTENTS

DIVISION 1 – GENERAL REQUIREMENTS

01010 - SCOPE OF WORK

1.1 – Definitions

1.2 – Description

1.3 – Location and Conditions

1.4 – Schedule

1.5 – Contract Administration

1.6 – Quality of Work

1.7 – Codes and Standards

1.8 – Special Construction Requirements

1.9 – Contract Closeout

01020 – MEASUREMENT & PAYMENT

1.1 – Measurement & Payment

01030 - MOBILIZATION

1.1 - Summary

01040 – CONSTRUCTION STAKING

1.1 - General

01050 – SUBMITTALS

1.1 - General

2.1 - Description

2.2 - Products

01060 – QUALITY CONTROL

DIVISION 2 – SITE WORK

02010 – DEMOLITION

1.1 – Description

2.1 – Not Used

3.1 - Preparation

3.2 – Protection

3.3 – Clearing iv

3.4 Removal

02020 – AGGREGATE BASE

1.1 - Summary

1.2 – Submittals

1.3 – Quality Assurance

2.1 – Aggregate

3.1 – Placing

3.2 – Mixing

3.3 – Compaction

3.4 – Surface Finishing

3.5 – Material Acceptance Requiements

3.6 – Tolerances

3.7 – Maintenance

02030 – PORTLAND CEMENT CONCRETE

1.1 - Summary

1.2 – References

1.3 – Submittals For Review

1.4 – Quality Assurance

1.5 – Environmental Requirements

2.1 – Form Materials

2.2 – Concrete Materials

2.3 – Accessories

2.4 – Concrete Mix

3.1 – Examination

3.2 – Preparation

3.3 – Forming

3.4 – Placing Concrete

3.5 – Joints

3.6 – Finishing

3.7 – Tolerances

3.8 – Field Quality Control

3.9 – Protection v

02040 –CONCRETE FORMWORK

1.1 - Summary

1.2 – References

1.3 – Design Requirements

1.4 – Quality Assurance

1.5 – Qualifications

1.6 – Regulatory Requirements

1.7 – Delivery, Storage, And Handling

1.8 – Coordination

2.1 – Wood Form Materials

2.2 – Prefabricated Forms

2.3 – Formwork Accessories

3.1 – Examination

3.2 – Erection Formwork

3.3 – Form Release Agent Application

3.4 – Inserts, Embedded Parts And Openings

3.5 – Form Cleaning

3.6 – Formwork Tolerances

3.7 – Field Quality Control

3.8 – Form Removal

02050 –CONCRETE REINFORCEMENT

1.1 - Summary

1.2 – References

1.3 – Submittals

1.4 – Quality Assurance

1.5 – Coordination

2.1 – Reinforcement

2.2 – Accessory Materials

2.3 – Fabrication

3.1 – Placement

02060 – CAST-IN-PLACE CONCRETE

1.1 - Summary vi

1.2 – Quality Assurance

1.3 – Submittals For Review

2.1 –Materials

2.2 – Mixes

3.1 – Subgrade Preparation

3.2 – Preparation For Concrete Placement

3.3 – Formwork

3.4 – Reinforcement

3.5 – Accessory Materials

3.6 – Joints

3.7 – Placing Concrete

3.8 – Hot Weather Requirements

3.9 – Cold Weather Requirements

3.10 – Removal of Forms

3.11 – Finishing

3.12 – Cement Mortar

3.13 – Curing

3.14 – Defective Materials And Concrete

3.15 – Protection Of Completed Work

3.16 – Cleaning

DIVISION 10 – SPECILATIES

10010 – STEEL FRAME METAL BUILDING

1.1 - Description of Work

2.1 – Mueller

3.1 – General

DIVISION 16 – ELECTRIC

16050 – BASIC ELECTRICAL MATERIALS AND METHODS

1.1 - Description of Work

2.1 – Electrical Equipment

3.1 – General vii

DIVISION 1 – GENERAL REQUIREMENTS

01010 - SCOPE OF WORK

PART 1 – GENERAL

1.1 – Definitions

Contractor – the successful bidder who is awarded the contract.

Government – the Contracting Officer (CO) or designated Contracting Officer’s Representative (COR) of the Coronado National Forest.

1.2 – Description

Contractor shall furnish all materials, equipment, transportation, labor, supervision, and other associated work necessary to complete work according to the drawings and specifications.

Scope of work includes:

• Demolition of existing engine bay and covered parking structure.

• Installation and compaction of fill material and placement of aggregate under new reinforced concrete slab and foundation.

• Design and construct a new reinforced concrete slab and foundation for new metal building.

• Furnish and installation of pre-engineered Mueller clear span steel rigid frame metal building. Optional item: furnish and installation of pre-engineered Mueller steel rigid frame covered parking structure and accompanying footers.

• Installation of electrical service components new metal building.

• Installation of heating and cooling system in new metal building.

• Relocation of evaporative cooler on adjacent warehouse.

1.3 – Location and Conditions

Work will take place at Safford Ranger District Work Center which is located in the town of Safford and is within the Safford Ranger District of the Coronado National Forest in Graham County, Arizona. The physical address is 111 9th Street, Safford, Arizona 85546.

It will be the Contractor’s responsibility to familiarize themselves with the existing conditions and notify the Government of any discrepancies shown in these documents.

For delivery of materials and other construction-related items, the Contractor shall coordinate with COR and is advised to determine safe vehicle lengths and load limits for roads that access the site.

1.4 – Schedule

A pre-work meeting for clarification of the project will be held if needed or desired by either the contractor or the Government

A schedule for all work must be submitted to and approved by the Government prior to construction beginning.

The Contractor shall notify the Forest Service three (3) days in advance of any survey work and seven (7) days in advance of any construction work.

All work shall be completed within 90 days of award.

1.5 – Contract Administration

The Contractor shall be fully responsible for seeing that construction activities conform to the specifications and provisions of this contract. The Government will provide timely reviews as requested by the Contractor and may periodically review work at any time.

Construction quality control shall include supplying all the personnel, equipment, and documentation necessary to ensure that construction is completed in compliance with the specifications and provisions of the contract.

The Contractor shall clearly stake limits of construction and maintain marks throughout construction. The Government will review all staking.

1.6 – Quality of Work

The products listed in the specifications are preferred products chosen for building compatibility and quality. However, equal or better alternatives submitted by the Contractor will be considered and are encouraged.

Use recovered materials, recyclable materials, and environmentally preferable products and services where possible as per Executive Order 13423.

1.7 – Codes and Standards

Codes and standards of the following associations and listed publications will become part of this contract:

1. International Building Code (IBC)

2. American Concrete Institute (ACI)

3. National Electrical Code (NEC)

4. International Mechanical Code (IMC)

5. International Fire Code (IFC)

6. Americans with Disability Act Standards (ADA) for Accessible Design

7. Occupational Health and Safety Administration (OSHA) standards

8. American Society for Testing and Materials (ASTM)

9. American National Standards Institute (ANSI)

10. Standardized Specifications for Paints and Coatings (SSPC)

11. Painting and Decorating Contractors of America (PDCA)

All materials, workmanship, and designs shall meet specified requirements of the standards referenced in this section and other local or state codes, related to this type of work, whichever is more stringent.

If a particular item is not covered by a standard, it shall be proven by certified test by a reputable laboratory to be capable of performing satisfactorily, at no additional cost to the Government.

1.8 – Special Construction Requirements

Upon completion of the project, all demolished improvements and other construction materials shall be removed from Government land and disposed of in accordance with State and County standards.

All site features to remain shall be protected from damage during the project. Any damage to site features shall be repaired to their original condition at the cost of the Contractor.

Sanitation/Garbage: The Contractor may provide and maintain a portable toilet for construction personnel during the Contract period. No garbage service is available for Contractor use. The Contractor shall keep the construction site free of loose garbage at all times.

Construction Access and Protection: The Contractor shall be responsible for securing the project area from the public and government personnel. This includes providing the necessary security for protection of the Contractor's materials, equipment, tools and work until final acceptance by the Government. The Contractor shall also provide sufficient signs, barriers, barricades, markers, etc. to warn of hazardous conditions and to protect people from injury.

Equipment and Material Storage: The Contractor shall obtain permission from the Government for equipment and material storage, and for other areas needed for construction.

Utilities: Water and electricity are available on site.

1.9 – Contract Closeout

Remove temporary facilities and provide final cleaning and touch-up. Restore portions of buildings, site improvements, landscaping, and other items damaged by construction operations to the satisfaction of the Government at no additional expense to the Government.

*** END OF SPECIFICATION 01010 ***

01020 – MEASUREMENT & PAYMENT

1.1 – Measurement & Payment

Measurement and payment for contract work will be made only for and under those pay items included in the SCHEDULE OF ITEMS. All other work and materials will be considered incidental to the completion of the items shown and no separate payment will be made.

*** END OF SPECIFICATION 01020 ***

01030 - MOBILIZATION

1.1 - Summary

Section Includes: Preparatory work and operations, including those necessary to the movement of personnel, equipment, supplies and incidentals to the project site; and for other work and operations which must be performed or costs incurred prior to beginning work on the various items on the project site. This specification does not include moves between project sites.

***END OF SPECIFICATION 01030***

01040 – CONSTRUCTION STAKING

1.1 - General

This section specifies construction staking required for all construction needs.

The Contractor shall set all flagging, stakes, nails and string lines etc. necessary to construct a complete project as SHOWN ON THE DRAWINGS. The Contractor is responsible for verifying any existing control points shown on the plans. The Contractor shall be responsible for maintaining all staking and for replacing any stakes lost or destroyed during their use period. Construction work shall not begin on an item until the staking for that item has been approved by the Government. This approval will not relieve the Contractor of the responsibility and the associated costs for correcting any errors, whether the errors are discovered during the performance of the survey or during subsequent phases of the project.

***END OF SPECIFICATION 01040***

01050 – SUBMITTALS

PART 1 – REQUIREMENTS

1.1 - General

It will be the Contractor's responsibility to submit all items with such promptness as to cause no delay in the work. Approvals must be obtained before starting work which involves the item. Contractor shall allow 5 days for processing of submittals by the Government. Submittals may also be referred to as shop drawings.

PART 2 – MANUFACTURER’S LITERATURE AND SHOP DRAWINGS

2.1 - Description

The Contractor shall submit one copy of all submittals to the Government for approval on the items required herein. For each submittal, the Contractor must receive written approval from the Government to use the item before incorporating it into the project work. Literature must be marked or otherwise designated to show the exact model, size, etc. the Contractor proposes to use. Information must be adequate to determine compliance with the specifications. Approvals must be received for products differing from those described in the Government-supplied specifications.

2.2 - Products

Certificates of compliance are required for the following:

1. Aggregate

2. Concrete

3. Rebar

4. MUELLER clear span steel rigid frame metal building

5. MUELLER steel rigid frame covered parking structure

6. Electrical Panel and components (breakers, wiring, conduit, receptacles)

7. Insulation

***END OF SPECIFICATION 01050***

01060 – QUALITY CONTROL

PART 1 – DESCRITPTION

This work shall consist of providing quality control in conformance with the inspection of construction provisions of this contract to ensure compliance with the drawings, specifications, and provisions of the contract. The contractor shall provide all personnel, equipment, tests, and reports necessary to meet the requirements of this specification.

PART 2 – CONSTRUCTION

The Contractor shall provide and maintain a quality control system that will ensure that all services, supplies, and construction required under this contract conform to the contract requirements. The Contractor shall perform, or cause to be performed, the sampling, inspection, and testing required to substantiate that all supplies, services, and construction conform to the contract requirements.

A. Quality Control Plan. The Contractor shall submit the following in writing:

1. Authorities and responsibilities of inspection and testing personnel.

2. Experience and qualifications of inspection and testing personnel to be assigned and name and location of any (for hire) testing facility to be used.

B. Approval of Quality Control Plan. The Contractor's proposed quality control plan for all items requiring quality control shall be submitted to the Government for review prior to the Contractor commencing work. Within 5 days of receipt of plan, the Government shall notify the Contractor whether the plan adequately covers quality control requirements. Construction work shall not be performed prior to Contractor's receipt of written approval of the proposed plan. The Contractor shall submit to the Government, in writing, any proposed changes in the approved quality control plan. Proposed changes shall not be put into effect until approved in writing by the Government.

The Contractor shall provide and maintain appropriate measuring and testing devices, equipment, and supplies to accomplish the required measurement, testing, and inspection in a timely manner. Tests, measurements, and certifications shall be made as required by the drawings and specifications. The Contractor shall take samples and perform inspections and tests necessary to achieve the quality of construction required by the contract.

C. Inspection and Tests. The Contractor shall maintain current records of all inspections and tests performed. The following format or one containing the following information will be acceptable to the Government:

Project Name Contract No. Test Performed By

Item Test Date Location Standard Results (Initials)

The Contractor shall certify in writing that all inspections and tests were performed in accordance with specifications.

D. As-Built Drawings. The Contractor shall maintain a set of the contract drawings depicting as-built conditions. These drawings shall be maintained in a current condition and shall be available for review. All variations from contract drawings shall be indicated in red on the drawings. Upon completion of the contract work, as-built drawings shall be submitted to the Government.

E. Frequencies for making approvals, inspecting, sampling and testing shall be as shown in Table 1400-1. Responsibilities shall be as shown in Table 1400-1. The following key refers to the abbreviations shown in Table 1400-1:

1. CC: Certification and/or inspection, sampling, and testing by Contractor, or Contractor's representative.

2. CL: Approvals, inspections, sampling, testing or measuring under the direction of and certification by a qualified employee of a certified lab or by a Registered Professional Engineer in the state of Arizona. The Contractor shall be responsible for furnishing the Professional services as shown in Table 1400-1.

TABLE 1400-1

QUALITY CONTROL, INSPECTION, SAMPLING, TESTING AND MEASUREMENTS

Item Approvals, inspections, sampling, minimum or test required

Frequency Certification

Aggregate Base Compaction Test 3 Total CL

Concrete Cylinder Test 3 Total CL

Air Entrainment Test 3 Total CL

Slump 3 Total CL

***END OF SPECIFICATION 01060***

***END OF DIVISION 1***

DIVISION 2 – SITE WORK

02010 – DEMOLITION

1.1 – Description

The work of this section consists of removal of existing facilities including engine bay, covered parking structure and waterlines.

PART 2 – PRODUCTS

2.1 – Not Used

PART 3 – EXECUTION

3.1 - Preparation

Coordinate removal work with the Government.

3.2 – Protection

A. Protect existing structures and features not required to be removed by construction from damage or displacement.

3.3 – Clearing

A. If any archaeological artifacts or evidence is encountered, notify the Government and halt work in the area immediately.

3.4 Removal

A. All facilities and materials scheduled for demolition must be completely removed off Government lands and disposed of legally by the Contractor.

B. Building to be removed: Existing Engine Bay Building is single story and approximately 30 ft by 50 ft (1,500 sq ft). Building is wood framing, drywall with a flat roof.

C. Building to be removed: Existing Covered Parking Structure is approximately 20 ft by 50 ft (1,000 sq ft). Structure is 4" by 6" posts with flat plywood roof.

D. Waterlines to be removed consist of spigots and approximately 30 ft underground waterline.

***END OF SPECIFICATION 02010***

02020 – AGGREGATE BASE

1.1 - Summary

Section Includes: The work of this section consists of furnishing and placing aggregate, and filler if required, on a prepared subgrade.

1.2 – Submittals

A. One copy of certified weight tickets for each load of aggregate delivered to project site.

B. If materials are obtained from a commercial source, submit certification from the supplier certifying that aggregate base course meets the requirements of this section.

C. Submit all Material and Compaction Test results directly to Contracting Officer (CO) from testing service.

1.3 – Quality Assurance

A. Material Test and Compaction Test to be the responsibility of the Contractor.

PART 2 – PRODUCTS

2.1 – Aggregate

A. Clean, hard, durable fragments or particles of crushed stone, crushed slag, or crushed or natural gravel. Materials that break up due to freeze-thaw or wet-dry cycling shall not be used.

B. Coarse Aggregate: AASHTO T96- 77, percentage of wear of not more than 50.

C. Fraction passing No. 40 sieve shall have a liquid limit not to exceed 25 and a plasticity index of not more than six, as determined by AASHTO T89-81 and 0-81, respectively.

D. Material, inclusive of filler, shall meet following screen analysis requirements by weight:

SIEVE DESIGNATION PERCENT PASSING

1-1/2 INCH 100

1 INCH 80-100

NO. 4 35-75

NO. 40 10-30

NO. 200 0-10

3.1 – Placing

If the required compacted depth of the aggregate base course exceeds six inches, place course in two or more layers of approximately equal thickness. The maximum compacted thickness of anyone layer will not exceed six inches.

3.2 – Mixing

Mix the aggregate by anyone of the three following methods:

A. Stationary Plant Method: Mix aggregate base course and appropriate amount of water for compaction in an approved mixer. After mixing, transport aggregate to the job site while it contains the proper moisture content and place on the roadbed with an approved aggregate spreader. Before compaction, remove excess moisture.

B. Travel Plant Method: After the material for each layer has been placed through an aggregate spreader or windrow-sizing device, it shall be uniformly mixed by a traveling mixing plant.

C. Road Mix Method: After placing each layer, mix materials at optimum moisture content using motor graders or other approved equipment until the moisture is uniform throughout.

3.3 – Compaction

Compact each layer to a density of not less than 95 percent of the maximum density, as determined by AASHTO T180- 74, Method D.

3.4 – Surface Finishing

A. Use a smooth steel wheel roller for the final rolling of top surface base course.

Water surface and evenly spread loose stones before final rolling. Make minimum of two complete passes over area to embed stones. Correct soft spots developed during rolling.

B. Compacted base course surface shall be smooth and free from waves and other irregularities. Unsatisfactory portions of base course shall be tom up, reworked, re-laid, and re-rolled, at no additional expense to Government.

3.5 – Material Acceptance Requiements

Acceptance will be based on periodic samples and tests taken following mixing and before laying

3.6 – Tolerances

Surface: Contractor shall test finished surface of the base course with a 10-foot straightedge or other device. The variation between any two contacts with the surface.

3.7 – Maintenance

Maintain base course in a satisfactory condition until surfaced or until final acceptance.

***END OF SPECIFICATION 02020***

02030 – PORTLAND CEMENT CONCRETE

1.1 - Summary

Section Includes: The work of this section consists using the stamped set of structural plans provided by the building manufacturer for the building, for use in designing the foundation plan and floor slab for the building.

The floor slab and foundation shall be designed to support a minimum live floor load capacity of a 28,000 lb engine and counteract all uplift forces-reactions.

1.2 – References

A. ACI 304 – Recommended Practice for Measuring, Mixing, Transporting and Placing Concrete.

B. ASTM C33 – Concrete Aggregates.

C. ASTM C94 – Ready Mix Concrete.

D. ASTM C150 – Portland Cement.

E. ASTM C260 – Air-Entraining Admixtures for Concrete.

F. ASTM C309 – Liquid Membrane-Forming Compounds for Curing Concrete.

G. ASTM C494 – Chemical Admixtures for Concrete.

H. ASTM D1751 – Preformed Expansion Joint Fillers for Concrete Paving and Structural Construction.

I. ASTM D1752 – Preformed Sponge Rubber and Cork Expansion Joint Fillers for Concrete Paving and Structural Construction.

1.3 – Submittals For Review

Product Data: Provide data on joint filler, admixtures and curing compounds.

1.4 – Quality Assurance

A. Perform work in accordance with ACI 301.

B. Obtain cementitious materials from same source throughout.

1.5 – Environmental Requirements

Do not place concrete when base surface temperature is less than 40°F, or surface is wet or frozen.

PART 2 – PRODUCTS

2.1 – Form Materials

Wood or steel form material, profiled to suit conditions.

2.2 – Concrete Materials

As specified in Section 02060 Cast-in-Place Concrete

2.3 – Accessories

A. Curing Compound: AASHTO M148 (ASTM C309), Type 1, Class A.

B. Joint Fillers: 1/2-inch preformed strips.

2.4 – Concrete Mix

A. Mix concrete in accordance with ACI 304. Deliver concrete in accordance with

ASTM C94.

B. Select proportions for normal weight concrete.

C. Provide concrete to the following criteria:

1. Air entrainment 3-5%.

2. Concrete Strength to be determined by foundation plan.

3. Slump should adhere to foundation plan.

D. Use accelerating admixtures in cold weather only when approved by the Government. Use of admixtures will not relax cold weather placement requirements.

E. Use calcium chloride only when approved by the Government.

F. Use set retarding admixtures during hot weather only when approved by the Government.

PART 3 – EXECUTION

3.1 – Examination

A. Verify base conditions under provisions of Section 02020.

B. Verify gradients and elevations of base are correct.

3.2 – Preparation

A. Moisten base to minimize absorption of water from fresh concrete.

B. Notify the Government minimum 24 hours prior to commencement of concreting operations.

3.3 – Forming

A. Place and secure forms to correct location, dimension, profile, and gradient.

B. Assemble formwork to permit easy stripping and dismantling without damaging concrete.

C. Place joint filler vertical in position, in straight lines. Secure to formwork during concrete placement.

3.4 – Placing Concrete

Place concrete in compliance with Standard Specifications. As specified in Section 02060 Cast-in-Place Concrete.

3.5 – Joints

A. General: Construct expansion, weakened-plane (contraction) and construction joints true-to-line with face perpendicular to surface of concrete. Construct transverse joints at right angles to the center line, unless otherwise indicated. Locate joints as shown on the foundation plan or, if not shown, divide concrete slabs into maximum 12-foot sections in both directions not to exceed a ratio of 4:5, as approved by the Government.

B. Weakened-Plane (Contraction) Joints: Provide weakened-plane (contraction) joints, if shown on foundation plan. Construct weakened-plane joints for a depth equal to at least 1/4 concrete thickness as follows:

1. Saw-Cut Joints: Saw cuts should be made 12 to 24 hours after finishing. Cut to a depth of 2", clean groove of loose debris.

2. Construction Joints: Place concrete joints at the end of pours and at locations where placement operations are stopped for a period of more than 1/2 hour, except where such pours terminate at expansion joints.

3. Expansion Joints: Provide pre-molded joint filler for expansion joints, in sidewalks and abutting concrete curbs, catch basins, manholes, inlets, structures, walks and other fixed objects, unless otherwise indicated. Depress joint filler 1/2 inch below surface where joint sealer is required.

3.6 – Finishing

A. Medium Broom Finish.

B. Place curing compound on exposed concrete surfaces immediately after finishing.

Apply in accordance with manufacturer's instructions.

3.7 – Tolerances

A. Maximum Variation of Surface Flatness: 1/4 inch in 10 feet.

B. Maximum Variation From True Position: 1/4 inch.

3.8 – Field Quality Control

Testing firm will take cylinders and perform slump tests in accordance with ACI 301.

3.9 – Protection

A. Immediately after placement, protect concrete from premature drying, excessive hot or cold temperatures, and mechanical injury.

B. Do not permit traffic over concrete until 75 percent design strength of concrete has been achieved.

***END OF SPECIFICATION 02030***

02040 –CONCRETE FORMWORK

1.1 - Summary

The work of this section consists:

A. Formwork for cast-in place concrete, with shoring, bracing, and anchorage

B. Form accessories

C. Form stripping.

1.2 – References

A. ACI 301 – Structural Concrete for Buildings.

B. ACI 318 – Building Code Requirements for Reinforced Concrete.

C. ACI 347 – Recommended Practice for Concrete Formwork.

D. PS 1 – Construction and Industrial Plywood.

1.3 – Design Requirements

Design, engineer and construct formwork, shoring, and bracing to conform to design and code requirements; resultant concrete to conform to required shape, line, and dimension.

1.4 – Quality Assurance

A. Perform work in accordance with ACI 347.

1.5 – Qualifications

Design of formwork is the responsibility of the Contractor.

1.6 – Regulatory Requirements

Conform to applicable code for design, fabrication, erection, and removal of formwork.

1.7 – Delivery, Storage, And Handling

A. Deliver, store, protect, and handle products to site under provisions of General Conditions.

B. Deliver void forms and installation instructions in manufacturer's packaging.

C. Store off ground in ventilated and protected manner to prevent deterioration from moisture.

1.8 – Coordination

A. Coordinate work under provisions of General Conditions.

B. Coordinate this Section with other Sections of work which require attachment of components to formwork.

C. If formwork is placed after reinforcement resulting in insufficient concrete cover over reinforcement before proceeding, request instructions from Government.

PART 2 – PRODUCTS

2.1 – Wood Form Materials

A. Softwood Plywood: PS 1, C Plugged Grade, Group 2.

B. Lumber: Pine species; construction grade or better; with grade stamp clearly visible.

2.2 – Prefabricated Forms

A. Preformed Steel Forms: Minimum 16 gage matched, tight fitting, stiffened to support weight of concrete without deflection detrimental to tolerances and appearance of finished surfaces.

2.3 – Formwork Accessories

A. Form Ties: Snap-off type, galvanized metal, adjustable length, cone type, with waterproofing washer, free of defects that could leave holes larger than 1 inch in concrete surface.

B. Form Release Agent: Colorless mineral oil which will not stain concrete, or absorb moisture, or impair natural bonding or color characteristics of coating intended for use on concrete.

C. Dovetail Anchor Slot: Galvanized steel, 22 gage thick, foam filled, release tape sealed slots, anchors for securing to concrete formwork.

D. Nails, Spikes, Lag Bolts, Through Bolts, Anchorages: Sized as required, of sufficient strength and character to maintain formwork in place while placing concrete.

E. Waterstops: Rubber, minimum 1,750 psi tensile strength, minimum 50°F to plus 175°F working temperature range, maximum possible lengths, ribbed profile, preformed corner sections, heat welded jointing.

3.1 – Examination

A. Government to approve all forms at least 4 hours prior to placing concrete. Notify Government 24 hours in advance of pouring concrete.

B. Verify lines, levels, and centers before proceeding with formwork. Ensure that dimensions agree with drawings.

3.2 – Erection Formwork

A. Erect formwork, shoring, and bracing to achieve design requirements, in accordance with requirements of ACI 301.

B. Provide bracing to ensure stability of formwork. Shore or strengthen formwork subject to over stressing by construction loads.

C. Arrange and assemble formwork to permit dismantling and stripping. Do not damage concrete during stripping. Permit removal of remaining principal shores.

D. Align joints and make watertight. Keep form joints to a minimum.

E. Install void forms in accordance with manufacturer's recommendations. Protect forms from moisture or crushing.

3.3 – Form Release Agent Application

A. Apply form release agent on formwork in accordance with manufacturer's recommendations.

B. Apply prior to placement of reinforcing steel, anchoring devices, and embedded items.

C. Do not apply form release agent where concrete surfaces will receive special finishes or applied coverings which are affected by agent. Soak inside surfaces of untreated forms with clean water. Keep surfaces coated prior to placement of concrete.

3.4 – Inserts, Embedded Parts And Openings

A. Provide formed openings where required for items to be embedded in passing through concrete work.

B. Locate and set in place items which will be cast directly into concrete.

C. Coordinate with work of other sections in forming and placing openings, slots, reglets, recesses, sleeves, bolts, anchors, other inserts, and components of other Work.

D. Install accessories in accordance with manufacturer's instructions, straight, level, and plumb. Ensure items are not disturbed during concrete placement.

E. Install water stops continuous without displacing reinforcement. Heat seal joints watertight.

F. Provide temporary ports or openings in formwork where required to facilitate cleaning and inspection. Locate openings at bottom of forms to allow flushing water to drain.

G. Close temporary openings with tight fitting panels, flush with inside face of forms, and neatly fitted so joints will not be apparent in exposed concrete surfaces.

3.5 – Form Cleaning

A. Clean forms as erection proceeds, to remove foreign matter within forms.

B. Clean formed cavities of debris prior to placing concrete.

C. Flush with water or use compressed air to remove remaining foreign matter. Ensure that water and debris drain to exterior through clean-out-ports.

D. During cold weather, remove ice and snow from within forms. Do not use de-icing salts. Do not use water to clean out forms, unless formwork and concrete construction proceed within heated enclosure. Use compressed air or other means to remove foreign matter.

3.6 – Formwork Tolerances

A. Construct formwork to maintain tolerances required by ACI 301.

3.7 – Field Quality Control

A. Inspect erected formwork, shoring, and bracing to ensure that work is in accordance with formwork design, and that supports, fastenings, wedges, ties, and items are secure.

B. Do not reuse wood formwork more than 3 times for concrete surfaces to be exposed to view.

C. Do not patch formwork.

3.8 – Form Removal

A. Do not remove forms or bracing until concrete has gained sufficient strength to carry its own weight and imposed loads.

B. Loosen forms carefully. Do not wedge pry bars, hammers, or tools against finish concrete surfaces scheduled for exposure to view.

C. Store removed forms in manner that surfaces to be in contact with fresh concrete will not be damaged. Discard damaged forms.

***END OF SPECIFICATION 02040***

02050 –CONCRETE REINFORCEMENT

1.1 - Summary

The work of this section consists of reinforcing steel bars, wire fabric, and accessories for cast-in-place concrete.

1.2 – References

A. ACI 301 – Structural Concrete for Buildings.

B. ACI 318 – Building Code Requirements for Reinforced Concrete.

C. ACI SP-66 – American Concrete Institute – Detailing Manual.

D. ANSI/ASTM A82 – Cold Drawn Steel Wire for Concrete Reinforcement.

E. ANSI/ASTM A184 – Fabricated Deformed Steel Bar Mats for Concrete Reinforcement.

F. ANSI/ASTM A185 – Welded Steel Wire Fabric for Concrete Reinforcement.

G. ANSI/AWS D1.4 – Structural Welding Code for Reinforcing Steel.

H. ASTM A615 – Deformed and Plain Billet Steel Bars for Concrete Reinforcement.

I. AWS D12.1 – Welding Reinforcement Steel, Metal Inserts, and Connections in Reinforced Concrete Construction.

1.3 – Submittals

Manufacturer's Certificate: Certify that products meet or exceed specified requirements.

1.4 – Quality Assurance

Perform Work in accordance with ACI 301, ACI SP-66 and ACI 318.

1.5 – Coordination

A. Coordinate work under provisions of General Conditions.

B. Coordinate with placement of formwork, formed openings, and other Work.

C. Masonry Joint Reinforcement: ASTM A82, unfinished.

2.1 – Reinforcement

A. Reinforcing Steel: ASTM A615, 60 ksi yield grade, as noted on drawings; deformed billet steel bars, unfinished.

B. Welded Steel Wire Fabric: ASTM A185 plain type; in flat sheets; unfinished.

2.2 – Accessory Materials

A. Tie Wire: Minimum 16 gauge annealed type.

B. Chairs, Bolsters, Bar Supports, Spacers: Sized and shaped for strength and support of reinforcement during concrete placement conditions including load bearing pad on bottom to prevent vapor barrier puncture.

C. Special Chairs, Bolsters, Bar Supports, Spacers Adjacent to Weather Exposed Concrete Surfaces: Plastic coated steel type; size and shape as required.

2.3 – Fabrication

A. Fabricate concrete reinforcing in accordance with ACI SP-66 and ACI 318.

B. Weld reinforcement in accordance with ANSI/AWS D1.4 and ANSI/AWS D12.1.

C. Locate reinforcing splices not indicated on drawings, at point of minimum stress.

PART 3 – EXECUTION

3.1 – Placement

A. Place, support, and secure reinforcement against displacement. Do not deviate from required position.

B. Do not displace or damage vapor barrier, if present.

C. Accommodate placement of formed openings.

D. Conform to ACI 318 code for concrete cover over reinforcement.

E. Chairs to be used for all welded-wire mesh in concrete slabs.

***END OF SPECIFICATION 02050***

02060 – CAST-IN-PLACE CONCRETE

1.1 - Summary

The work under this section shall consist of furnishing all labor, tools, materials, and equipment for construction of the floor slab and foundations to be cast-in-place, in accordance with the details shown on the foundation plan for the building designed using the stamped set of structural plans provided by the building manufacturer for the building.

All costs associated to this specification shall be considered incidental to the placement of concrete

The floor slab and foundation shall be designed to support a minimum live floor load capacity of a 28,000 lb engine and counteract all uplift forces-reactions.

1.2 – Quality Assurance

A. Standards: Concrete work shall conform to the latest edition of the following standards and to the Contract Drawings and Specifications.

B. Uniform Building Code, as adopted and modified by the local governing authority.

C. American Concrete Institute "Manual of Concrete Practice", and publication ACI 318 "Building Code Requirements for Reinforced Concrete".

D. American Society for Testing and Materials, Standards as referenced herein.

1.3 – Submittals For Review

A. Ready-mix delivery tickets shall be given to the Project Superintendent for examination by the Government.

B. The tickets shall contain the following information.

1. Number of cubic yards in batch.

2. Quantity and description of admixtures used.

3. Maximum size of aggregate.

4. Design compressive strength.

5. Gallons of water added at the site.

2.1 –Materials

A. Cement: Portland Cement, Type II, ASTM C150.

B. Aggregate:

1. Standard weight aggregates conforming to requirements of ASTM C33.

2. Uniformly graded, clean and durable material free of organic matter or other deleterious substances.

3. The maximum size used in a particular location shall be consistent with the form and dimensions of the section being placed and with the method of compaction. The aggregate sizes shall be such as will produce dense, uniform concrete, free of rock pockets, honey combs and other irregularities unacceptable to an Architectural finished surface

C. Water: Potable, free of harmful acids, alkalis, oils and organic substances.

D. Admixtures: No admixtures shall be used unless specifically requested by the General Contractor and approved by the Government. When used, the Contractor shall provide evidence from an independent testing laboratory which assures that the admixture will have no deleterious effect upon reinforced concrete; and which indicates chemical compounds, effects upon strength, durability, and resistance to weathering and wear, and curing time.

E. Expansion Joint Filler:

1. Non-extruding, preformed type; thickness as shown on drawings or plans.

2. Fiber joint filler may be used only with a rubber asphalt sealer. Do not use fiber material with a chemically-cured sealant.

F. Control Joint: Propose layout for Government approval

2.2 – Mixes

A. Ready Mix Concrete: Transit mixed concrete shall conform to the requirements of Standard Specifications for Ready-Mix Concrete, ASTM C94, Alternative 2.

B. Proportions: Proportions of cement, aggregates and water shall be such as to produce a concrete that will work into all corners and angles of forms, and around reinforcement and inserts; and that will not segregate. Proportions shall be as required within limits specified and shall produce concrete of strength and durability required. Excess free surface water is not permitted.

C. Strength: Shall be determined by the foundation plan designed for the building or as otherwise specified on the plans.

D. Temperature: Concrete when deposited shall have a temperature above 50°F and below 95°F. Design shall provide for duration and type of conveyance and handling.

E. Air Entrainment: All concrete shall have 3-5% air entrainment.

PART 3 – EXECUTION

3.1 – Subgrade Preparation

Subgrades shall be shaped, dressed, moistened and compacted, as required. Test the subgrade for crown, elevation, and density in advance of placing pavement. Remove and replace soft or unsuitable material with approved material. Bring low sections, holes, or depressions to the required grades with approved material, shape the entire sub-grade to line, grade and cross , and thoroughly compact as specified.

3.2 – Preparation For Concrete Placement

A. Place embedded items, and expansion strips as indicated; maintain items securely in place. The Contractor shall give reasonable and adequate advance notice of concrete placement to all subcontractors and concerned parties who must place items to be embedded in or pass through the concrete to be poured, e.g. pipes, anchor bolts, sleeves, reglets, casings, etc., as shown on the drawings or otherwise required. Notify Government immediately of any conflict with structural elements.

B. Water shall be removed from place of deposit before concrete is placed unless otherwise permitted by the Government. All laitance and other unsound material shall be removed from hardened concrete before additional concrete is placed.

C. Screeds shall be rigidly secured in place. When the formwork is cambered, screeds shall be set to a like camber to maintain the proper concrete thickness.

D. Upon completion of preparatory operations, but prior to placement of concrete, Government shall be notified for observation minimum 24 hours prior to commencement of concreting operations. No concrete shall be placed without notification. The Government may regard preparatory work unacceptable if he has not had reasonable opportunity for such observation.

3.3 – Formwork

A. Formwork shall be structurally sound and rigid and shall conform in section and dimension to the drawings or plan. Forms are subject to the approval of the Government. Oil forms each time they are used.

B. Shoring and forms shall be cleaned of all loose dirt and other foreign matter. Dampen dry soil and forms just prior to pouring. Avoid excessive watering.

3.4 – Reinforcement

A. Concrete slabs that receive vehicular traffic shall be reinforced with rebar.

3.5 – Accessory Materials

A. Tie Wire: Minimum 16 gauge annealed type.

B. Special Chairs, Bolsters, Bar Supports, Spacers Adjacent to Weather Exposed Concrete Surfaces: Plastic coated steel type; size and shape as required.

3.6 – Joints

Joints not indicated on the drawings or plans shall be so made and located as to least impair the strength of the structure, while reducing the effects of shrinkage. The location of joints not indicated on the drawings or plans are subject to the approval of the Government.

Install pre-molded expansion joints if indicated on the drawings or plans. Expansion joint strips shall be installed to the full depth of the joint. Where caulked expansion joints are indicated on the drawings, set the top of expansion joint strips down from the finished top surface of slabs to the depth required to receive the caulking.

3.7 – Placing Concrete

A. Concrete shall be deposited as nearly as practicable in its final position to avoid segregation due to re-handling or flowing. The placing of concrete shall be carried on at such a rate that concrete is at all times plastic and flows readily into the spaces between the bars. No concrete that has been contaminated by foreign material shall be used, nor shall re-tempered concrete be used unless approved by the Government.

B. When placing is once started, it shall be carried on as a continuous operation until placement of the panel or section is completed. When construction joints are necessary, they shall be made as specified herein.

C. No concrete shall be dropped freely into place from a greater height than four feet.

Tremies shall be used for placing concrete where the drop is in excess of such height.

D. All concrete shall be thoroughly consolidated by suitable means during placement. It shall be thoroughly worked around reinforcement and embedded fixtures and into the corners of the forms. Vibration shall be transmitted directly to the concrete; in no case shall it be transmitted through the forms. The vibration shall be sufficiently intense to cause the concrete to settle readily into place and to visibly affect the concrete over a radius of at least 18". Vibrators shall not, however, be used to transport concrete or force concrete to flow horizontally. Vibration shall be supplemented by manual forking or spading adjacent to the forms on exposed faces in order to secure smooth, dense surfaces. If, for any reason, the surfaces or interiors have voids or are in any way defective, such concrete shall be repaired as directed by the Government, and no defective work shall be patched or repaired without the prior inspection and approval of the Government.

E. Slump:

1. Concrete samples shall be measured for slump in accordance with ASTM C143. The slump of the concrete shall be the minimum that is practicable.

2. In any case, the slump shall not exceed 4-1/2" without the expressed approval of the Government.

3.8 – Hot Weather Requirements

Concrete pours during hot weather should be scheduled for early morning hours to the maximum extent possible in order to permit finishing operations to be completed by noon.

3.9 – Cold Weather Requirements

A. Adequate equipment shall be provided for heating concrete materials and protecting concrete during freezing or near-freezing weather. No frozen materials or materials containing snow or ice shall be used.

B. All reinforcement, forms, fillers, and ground with which the concrete is to come in contact shall be free from snow or ice. Whenever the temperature of the surrounding air is below 40°F or higher after placement. Adequate means shall be provided for maintaining this temperature for 4 days. When high-early-strength concrete is used, a temperature of at least 45°F shall be maintained for 3 days. In either case, any additional time necessary to ensure proper curing of the concrete shall be provided as directed by the Government. The housing, covering, or other protection used in connection with curing shall remain in place and intact at least 24 hours after the artificial heating is discontinued. No dependence shall be placed on salt or other chemicals for the prevention of freezing.

C. Do not permit traffic over concrete until 75 percent design strength of concrete has been achieved.

3.10 – Removal of Forms

Forms shall be removed in such a manner as to ensure the complete safety of the structure.

3.11 – Finishing

All Concrete shall have a medium broom finish.

3.12 – Cement Mortar

Cement mortar for the repair of imperfect concrete work, the filling of holes left by form bolts and ties, and the filling of voids around piping through concrete shall consist of cement and sand mixed in the same proportion as used for the concrete being repaired, with only sufficient water to give the required consistency, but in no case shall the water-cement ration be more than that specified for Class "A" concrete. Mortar that has not been placed within 30 minutes of mixing shall be discarded.

3.13 – Curing

Concrete shall be protected against loss of moisture, rapid drying, or temperature changes, mechanical injury or injury from rain or flowing water for a period of at least seven days in accordance with requirements of ACI 308 and ACI 305, as specified herein. Curing shall commence as soon as free water has disappeared from the surfaces after finishing.

3.14 – Defective Materials And Concrete

Concrete work shall be considered defective if not formed in accordance with the requirements of the drawings and specifications. Concrete may be judged to be unacceptable if it is not true to intended line, grade or plane, or contains sand streaks, objectionable joints, excessive pitting or dusting, voids or rock pockets detrimental to structure or finish, or which shows other irregularities, marking or deficiency including improper strength.

Defective concrete work shall be removed and replaced with new concrete acceptable to the Government, unless suitable correction of defects may be otherwise accomplished as authorized by the Government, and without additional cost to the Government.

3.15 – Protection Of Completed Work

During the…