FAKZ039172 Addendum No. 1 SIGNED.pdf

Date: 17 July 2023

To: CMSgt. William Hall

Subject: ADDENDUM NO. 1

Project: F-35: WEAPONS LOAD CREW TRAINING FACILITY

Job #: ANG# FAKZ039172 / SSL# 18138

From: David Donovan

The plans and Specifications for the F-35 – Weapons Load Crew Training Facility, dated March 2023 are amended as follows. (Where there are conflicts between the plans and specifications and the addendum, this addendum shall govern).

Item No. 1: Delete drawing sheet C1.1 “Site Demolition Plan” and replace it with the attached drawing sheet C1.1 with a revised date of 5 July 2023. Revisions to the drawing are clouded in the revised drawing and include, but are not limited to, the following:

- Add note regarding the presence of copper and steel electrodes abandoned in place on the project site and Contractor’s responsibility regarding demolition of the abandoned electrodes.

- Add note regarding the presence of gravel backfill on the site and the Contractor’s responsibility regarding removal/relocation of the gravel.

- Revised drawing legend.

Item No. 2: Delete drawing sheet C1.2 “Building 1403 Site Demolition Plan” and replace it with the attached drawing sheet C1.2 with a revised date of 5 July 2023. Revisions to the drawing are clouded in the revised drawing and include, but are not limited to, the following:

- Revised drawing legend.

Item No. 3: Delete drawing sheet C2.1 “Site Layout Plan” and replace it with the attached drawing sheet C2.1 with a revised date of 5 July 2023. Revisions to the drawing are clouded in the revised drawing and include, but are not limited to, the following:

- Added callout to bollards at roll up doors.

Item No. 4: Add the attached drawings sheet A5.5 – Vapor Protection Details – Bid

Option #7 with a revised date of 10 July 2023.

F-35: WEAPONS LOAD CREW TRAINING FACILITY FAKZ039172

ADDENDUM NO. 1 Page 2 of 4 Seay Seay & Litchfield, P.C. 17 July 2023

Item No. 5: Refer to specifications. Delete specification section 31 2210 “Earthwork” and replace it with the attached specification section 31 2210 with a revised date of 16 June 2023. Additions to the specification are noted in bold/italicized text and deletions are noted with strikethrough text.

Revisions included, but are not limited to, the following:

- Modify subgrade preparation and select fill placement requirements.

- Delete lime stabilization option for pavement subgrade preparation.

Item No. 6: Refer to specifications. Delete specification section 09 9600 “High

Performance Coatings” and replace it with the attached specification section 09 9600 with a revised date of 14 July 2023. Additions to the specification are noted in bold/italicized text and deletions are noted with strikethrough text. Revisions included, but are not limited to, the following:

- Remove references to matte finish.

- Add moisture resistant epoxy resin primer and revise calcium chloride and relative humidity testing limitations.

Item No. 7: Delete drawing sheet L2.0 “Enlarged Landscape Site Plan & Details” and replace it with the attached drawing sheet L2.0 with a revised date of 10 July 2023 Revisions to the drawing are clouded in the revised drawing and include, but are not limited to, the following:

- Enlarge landscape wall footing and increase number of continuous rebar in landscape wall footing.

Item No. 8: Refer to specifications. Delete specification section 10 2800 “Toilet, Bath, and Laundry Accessories” and replace it with the attached specification section 10 2800 with a revised date of 14 July 2023. Additions to the specification are noted in bold/italicized text and deletions are noted with strikethrough text. Revisions included, but are not limited to, the following:

- Replace scheduled toilet paper dispenser, paper towel dispenser, and soap dispenser.

Item No. 9: Delete drawing sheet S1.1 “First Floor and Foundation Plan” and replace it with the attached drawing sheet S1.1 with a revised date of 16 June 2023. Revisions to the drawing are clouded in the revised drawing and include, but are not limited to, the following:

- Revised control joint layout in hangar bay to coordinate with floor slope.

- Add filled cells and footing “F-A” at load bearing masonry condition on East side of facility.

- Add note to offset block to accommodate hat channel where metal wall panels extend to grade along South side of the Load Certification Bay.

ADDENDUM NO. 1 Page 3 of 4 Seay Seay & Litchfield, P.C. 17 July 2023

Item No. 10: Delete drawing sheet S1.2 “Mezzanine & Roof Framing Plan” and replace it with the attached drawing sheet S1.2 with a revised date of 16 June 2023. Revisions to the drawing are clouded in the revised drawing and include, but are not limited to, the following:

- Clarify requirements for HSS girt along grid line 1.

- Delete low HSS at hangar door along line 5.

- Clarify cantilever girt conditions along line H at line 5.

Item No. 11: Delete drawing sheet S2.1 “Sections and Details” and replace it with the attached drawing sheet S2.1 with a revised date of 16 June 2023.

Revisions to the drawing are clouded in the revised drawing and include, but are not limited to, the following:

- Add hat channel and adjust wall section dimensions to accommodate

CMU offset where metal panels extend to grade along South side of the Load Certification Bay.

Item No. 12: Delete drawing sheet S2.2 “Sections and Details” and replace it with the attached drawing sheet S2.2 with a revised date of 16 June 2023.

Revisions to the drawing are clouded in the revised drawing and include, but are not limited to, the following:

- Corrected CMU and wall cavity dimensions on details 1, 2, & 6.

- Corrected joist seat height indicated on detail 4.

- Add wall girts above hangar door on detail 7. Wall girt supports above hangar door to be by metal building manufacturer as required for spans.

Item No. 13: Delete drawing sheet S2.3 “Sections and Details” and replace it with the attached drawing sheet S2.3 with a revised date of 16 June 2023.

Revisions to the drawing are clouded in the revised drawing and include, but are not limited to, the following:

- Corrected CMU and wall cavity dimensions on details 1, 2, 3, 4, 5, &

6.

Item No. 14: Delete drawing sheet S2.4 “Sections and Details” and replace it with the attached drawing sheet S2.4 with a revised date of 16 June 2023.

Revisions to the drawing are clouded in the revised drawing and include, but are not limited to, the following:

- Corrected CMU and wall cavity dimensions on details 1 & 2.

ADDENDUM NO. 1 Page 4 of 4 Seay Seay & Litchfield, P.C. 17 July 2023

Item No. 15: Delete drawing sheet L1.0 “Landscape Site Plan” and replace it with the attached drawing sheet L1.0 with a revised date of 10 July 2023.

Revisions to the drawing are clouded in the revised drawing and include, but are not limited to, the following:

- Corrected cast stone benches and backless wood seats to match standard available lengths.

End of Addendum #1

INTEGRALLY BONDED UNDERSLAB VAPOR BARRIER

CONCRETE FLOOR SLAB

POROUS FILL

SHEET MEMBRANE WATERPROOFING

FOOTING - SEE STRUCTURAL

CMU WALL

SHEET MEMBRANE WATERPROOFING

POROUS FILL

CONCRETE FLOOR SLAB

INTEGRALLY BONDED UNDERSLAB VAPOR BARRIER

SEALANT

FOOTING - SEE STRUCTURAL

POROUS FILL

CONCRETE FLOOR SLAB

INTEGRALLY BONDED UNDERSLAB VAPOR BARRIER

PEJ

FOOTING - SEE STRUCTURAL

PIER - SEE STRUCTURAL

POROUS FILL

STEEL COLUMN - SEE STRUCTURAL

CONCRETE FLOOR SLAB

INTEGRALLY BONDED UNDERSLAB VAPOR BARRIER

ANCHOR BOLTS

TRENCH DRAIN

POROUS FILL

METAL GRATE

INTEGRALLY BONDED UNDERSLAB VAPOR BARRIER

Sheet Number

Sheet Title

Project Title

Job Number

Date

Drawn By

Checked By

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M on tg om er y, A L

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A5.5

VAPOR

PROTECTION

DETAILS - BID

OPTION #7

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FAKZ 039172 / 18138

MARCH 2023

ME

DCD

No. Revision Date

1 ADD#1 7-10-23

1" = 1'-0"A5.5

1 EXTERIOR WALL VAPOR BARRIER DETAIL

1" = 1'-0"A5.5

2 INTERIOR CMU WALL VAPOR BARRIER DETAIL

1" = 1'-0"A5.5

3 EXTERIOR WALL VAPOR BARRIER DETAIL AT HANGAR DOOR

1" = 1'-0"A5.5

4 VAPOR BARRIER DETAIL AT COLUMN/PIER

1" = 1'-0"A5.5

5 VAPOR BARRIER DETAIL AT TRENCH DRAIN

F:35 Weapons Load Train. FAKZ039172 / 18138 March 2023 187th Fighter Wing, Dannelly Field, ANG Type B3 (100%) Submittal Montgomery, AL Revised 16 June 2023

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SECTION 312210 - EARTHWORK

PART 1 GENERAL

1.01 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including requirements of the Government's Solicitation and Division 01 Specification Sections, apply to this Section.

1.02 SUMMARY

A. This Section includes the following:

1. Preparing subgrades for slabs-on-grade, walks, pavements, lawns, and plantings.

2. Excavating and backfilling for buildings and structures.

3. Drainage course for slabs-on-grade.

4. Fine grading, topsoiling and preparing lawn areas.

5. Excavating and backfilling trenches within building lines.

6. Excavating and backfilling trenches for buried mechanical and electrical utilities and pits for buried utility structures.

7. Geotechnical Reports applicable to this project.

8. Preparing crushed aggregate base for pavement areas.

B. Related Sections include the following:

1. Division 31 Section "Site Clearing" for site stripping, grubbing, removing topsoil, and protecting trees to remain.

2. Division 32 Section “Sodding” for placing of sod for lawn areas.

1.03 DEFINITIONS

A. Backfill: Soil materials used to fill an excavation.

1. Initial Backfill: Backfill placed beside and over pipe in a trench, including haunches to support sides of pipe.

2. Final Backfill: Backfill placed over initial backfill to fill a trench.

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B. Bedding Course: Layer placed over the excavated subgrade in a trench before laying pipe.

C. Borrow: Satisfactory soil imported from off-site for use as fill or backfill.

D. Drainage Course: Layer supporting slab-on-grade used to minimize capillary flow of pore water.

E. Excavation: Removal of material encountered above subgrade elevations.

1. Additional Excavation: Excavation below subgrade elevations as directed by the Government. Additional excavation and replacement material will be paid for according to Contract provisions for changes in the Work.

2. Bulk Excavation: Excavations more than 10 feet in width and pits more than 30 feet in either length or width.

3. Unauthorized Excavation: Excavation below subgrade elevations or beyond indicated dimensions without direction by the Government. Unauthorized excavation, as well as remedial work directed by the Government, shall be without additional compensation.

F. Fill: Soil materials used to raise existing grades.

G. Structures: Buildings, footings, foundations, retaining walls, slabs, curbs, mechanical and electrical appurtenances, or other man-made stationary features constructed above or below the ground surface.

H. Subgrade: Surface or elevation remaining after completing excavation, or top surface of a fill or backfill immediately below subbase, drainage fill, or topsoil materials.

I. Utilities include on-site underground pipes, conduits, ducts, and cables, as well as underground services within buildings.

1.04 SUBMITTALS

A. Material Test Reports: Submit following reports directly to the Government from the testing services, with copy to the Contractor.

1. Classification according to ASTM D 2487 of each on-site or borrow soil material proposed for fill and backfill.

2. Laboratory compaction curve according to ASTM D 698 for each on-site or borrow soil material proposed for fill and backfill.

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3. One optimum moisture density curve for each type of soil encountered.

4. Verification of each footing subgrade.

1.05 QUALITY ASSURANCE

A. Geotechnical Testing Agency: Soil testing and inspection service for quality control testing during earthwork operations shall be furnished by the Contractor. Retesting of failed test to be provided and paid for by the General Contractor.

B. Prior to the installation or placement of concrete into in situ soil (load bearing earth), the Contractor shall receive acknowledgement from the Testing Company that the soil where the concrete is to be placed meets all compaction and other testing requirements specified and/or required by the onsite testing agent. This approval with all drawings showing pertinent information indicating that day’s work attached shall be signed and dated by the onsite Testing Agent and the Contractor’s Superintendent and presented to the Government onsite.

1. The testing agency shall report to the contractor the results of all required tests, which shall be reviewed and acknowledges by the General Contractor and then submitted to the Government. The General Contractor shall not submit any failed soil density concrete or other test result(s) to the Government without including the applicable recheck test result(s) that indicate compliance with the Specifications.

The recheck test result(s) shall be identified with the same number as the failed test with the notation “-R”.”

1.06 PROJECT CONDITIONS

A. Site Information: The report of subsurface investigation is bound herein. Data on indicated subsurface conditions are not intended as representations or warranties of accuracy or continuity between soil borings. It is expressly understood that the Government will not be responsible for interpretations or conclusions drawn therefrom by Contractor.

1. Additional test borings and other exploratory operations may be made by Contractor at no cost to the Government.

B. Existing Utilities: Do not interrupt utilities serving facilities occupied by the Government or others unless permitted in writing by the Government and then only after arranging to provide temporary utility services according to requirements indicated:

1. Notify the Government not less than two days in advance of proposed utility interruptions.

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2. Do not proceed with utility interruptions without the Government's written permission.

3. Contact utility-locator service for area where Project is located before excavating.

C. Demolish and completely remove from site existing underground utilities indicated to be removed. Coordinate with utility companies to shut off services if lines are active.

D. Recommendations made in the reports of subsurface investigation bound herewith after this section shall be a requirement of these specifications. Where conflicts occur between the report and this specification, the more stringent requirement shall govern.

PART 2 PRODUCTS

2.01 SOIL MATERIALS

A. General: Provide borrow soil materials when sufficient satisfactory soil materials are not available from excavations.

B. Satisfactory Soils: ASTM D 2487 soil classification groups GW, GP, GM, SW, SP, and SM, or a combination of these group symbols; free of rock or gravel larger than 3 inches in any dimension, debris, waste, frozen materials, vegetation, and other deleterious matter.

C. Unsatisfactory Soils: ASTM D 2487 soil classification groups GC, SC, ML, MH, CL, CH, OL, OH, and PT, or a combination of these group symbols.

1. Unsatisfactory soils also include satisfactory soils not maintained within 2 percent of optimum moisture content at time of compaction.

D. Backfill and Fill: Satisfactory soil materials.

E. Base: Crushed aggregate base in accordance with requirements of Section 825 of the State of Alabama Department of Transportation Standard Specifications for Highway Construction, 2008 Edition, unless noted otherwise.

F. Structural Fill: required to grade the site can consist of the clean, non-saturated, and non-organic sections of the native clay earth. The use of native clay earth shuld be limited to material with moisture content lass than 35% and plasticity indices less than 35.

G. Select fill earth originating from an off-site source shall consist of a clean, non-saturated, and non-organic clayey sand or sandy clay that contains 100% passing 3-inch sieve, 75-100% minimum passing No. 4 sieve and 35% to 55% passing #200 mesh sieve, a liquid limit of less than 40%, and a plasticity index of 8% to 14% and a

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minimum dry unit weight (ASTM D-698) of 115 pcf.

H. Engineered Fill: All fill earth, including structural fill earth, placed in the “Controlled Areas” shall be designated as “Engineered Fill.”

I. Bedding: Naturally or artificially graded mixture of natural or crushed gravel, crushed stone, and natural or crushed sand; ASTM D 2940; except with 100 percent passing a 1-inch sieve and not more than 8 percent passing a No. 200 sieve.

J. Drainage Fill: Washed, narrowly graded mixture of crushed stone, or crushed or uncrushed gravel; ALDOT Section 800; coarse-aggregate grading Size 57 or 67.

K. Topsoil: Topsoil shall be a natural, workable, friable, loamy soil, without admixture of subsoil, refuse, or foreign materials, suitable for growing grasses or other vegetative ground cover. Topsoil shall be furnished by the Contractor from an off-site source approved by the Government if required to supplement previously stockpiled on-site topsoil.

2.02 ACCESSORIES

A. Detectable Warning Tape: Acid- and alkali-resistant polyethylene film warning tape manufactured for marking and identifying underground utilities, 6 inches wide and 4 mils thick minimum, continuously inscribed with a description of the utility, with metallic core encased in a protective jacket for corrosion protection, detectable by metal detector when tape is buried up to 2’-6” deep.

1. Tape Colors: Provide tape colors to utilities as follows:

Red: Electric

Yellow: Gas, oil, steam, and dangerous materials.

Orange: Telephone and other communications.

Blue: Water systems.

Green: Sewer systems.

PART 3 EXECUTION

3.01 PREPARATION

A. Protect structures, utilities, sidewalks, pavements, and other facilities from damage caused by settlement, lateral movement, undermining, washout, and other hazards created by earthwork operations.

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B. Protect subgrades and foundation soils against freezing temperatures or frost. Provide protective insulating materials as necessary.

C. Provide erosion-control measures to prevent erosion or displacement of soils and discharge of soil-bearing water runoff or airborne dust to adjacent properties and walkways.

3.02 DEWATERING

A. Prevent surface water and ground water from entering excavations, from ponding on prepared subgrades, and from flooding Project site and surrounding area.

B. Protect subgrades from softening, undermining, washout, and damage by rain or water accumulation.

1. Reroute surface water runoff away from excavated areas. Do not allow water to accumulate in excavations. Do not use excavated trenches as temporary drainage ditches.

2. Install a dewatering system to keep subgrades dry and convey ground water away from excavations. Maintain until dewatering is no longer required.

3.03 EXPLOSIVES

A. Explosives: Do not use explosives.

3.04 EXCAVATION, GENERAL

A. Unclassified Excavation: Excavation to subgrade elevations regardless of the character of surface and subsurface conditions encountered, including rock, soil materials, and obstructions.

1. If excavated materials intended for fill and backfill include unsatisfactory soil materials and rock, replace with satisfactory soil materials.

3.05 EXCAVATION FOR STRUCTURES

A. The building “control area” shall be undercut as recommended by the Report of Geotechnical Subsurface Investigation, prepared by Carmichael Engineering, Inc., for this project.

B. Excavate to indicated elevations and dimensions within a tolerance of plus or minus 1 inch. Extend excavations a sufficient distance from structures for placing and removing concrete formwork, for installing services and other construction, and for inspections.

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1. Excavations for Footings and Foundations: Do not disturb bottom of excavation.

Excavate by hand to final grade just before placing concrete reinforcement. Trim bottoms to required lines and grades to leave solid base to receive other work.

2. Excavation for Underground Mechanical or Electrical Utility Structures: Excavate to elevations and dimensions indicated within a tolerance of plus or minus 1 inch.

Do not disturb bottom of excavations intended for bearing surface.

3.06 EXCAVATION FOR WALKS AND PAVEMENTS

A. Excavate surfaces under walks and pavements to indicated cross sections, elevations, and grades.

B. Refer to paragraph 3.20 for Contractor's Option for pavement subgrade preparation.

Excavate to depth required based upon the selected preparation method.

3.07 EXCAVATION FOR UTILITY TRENCHES

A. Excavate trenches to indicated gradients, lines, depths, and elevations.

1. Beyond building perimeter, excavate trenches to allow installation of top of pipe below frost line.

B. Excavate trenches to uniform widths to provide a working clearance on each side of pipe or conduit. Excavate trench walls vertically from trench bottom to 12 inches higher than top of pipe or conduit, unless otherwise indicated.

1. Clearance: 12 inches on each side of pipe or conduit.

C. Trench Bottoms: Excavate and shape trench bottoms to provide uniform bearing and support of pipes and conduit. Shape subgrade to provide continuous support for bells, joints, and barrels of pipes and for joints, fittings, and bodies of conduits. Remove projecting stones and sharp objects along trench subgrade.

1. For pipes and conduit less than 6 inches in nominal diameter and flat-bottomed, multiple-duct conduit units, hand-excavate trench bottoms and support pipe and conduit on an undisturbed subgrade.

2. For pipes and conduit 6 inches or larger in nominal diameter, shape bottom of trench to support bottom 90 degrees of pipe circumference. Fill depressions with tamped sand backfill.

3. Excavate trenches 6 inches deeper than elevation required in unyielding bearing material to allow for bedding course.

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3.08 APPROVAL OF SUBGRADE

A. Notify the Government when excavations have reached required subgrade.

B. If the Government determines that unsatisfactory soil is present, continue excavation and replace with compacted backfill or fill material as directed.

1. Additional excavation and replacement material will be paid for according to Contract provisions for changes in the Work.

C. Proof roll subgrade under building and pavement areas with heavy pneumatic-tired equipment to identify soft pockets and areas of excess yielding proof rolling shall include a minimum of 2 passes in perpendicular directions over the controlled area. Do not proof roll wet or saturated subgrades.

D. Reconstruct subgrades damaged by freezing temperatures, frost, rain, accumulated water, or construction activities, as directed by the Government.

3.09 UNAUTHORIZED EXCAVATION

A. Fill unauthorized excavation under foundations or wall footings by extending bottom elevation of concrete foundation or footing to excavation bottom, without altering top elevation. Lean concrete fill may be used when approved by the Government.

1. Fill unauthorized excavations under other construction or utility pipe as directed by the Government.

3.10 STORAGE OF SOIL MATERIALS

A. Stockpile borrow materials and satisfactory excavated soil materials. Stockpile soil materials without intermixing. Place, grade, and shape stockpiles to drain surface water. Cover to prevent windblown dust.

1. Stockpile soil materials away from edge of excavations. Do not store within drip line of remaining trees.

3.11 BACKFILL

A. Place and compact backfill in excavations promptly, but not before completing the following:

1. Construction below finish grade including, where applicable, dampproofing, waterproofing, and perimeter insulation.

2. Surveying locations of underground utilities for record documents.

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3. Inspecting and testing underground utilities.

4. Removing concrete formwork.

5. Removing trash and debris.

6. Removing temporary shoring and bracing, and sheeting.

7. Installing permanent or temporary horizontal bracing on horizontally supported walls.

3.12 UTILITY TRENCH BACKFILL

A. Place and compact bedding course on trench bottoms and where indicated. Shape bedding course to provide continuous support for bells, joints, and barrels of pipes and for joints, fittings, and bodies of conduits.

B. Backfill trenches excavated under footings and within 18 inches of bottom of footings;

fill with concrete to elevation of bottom of footings.

C. Place and compact initial backfill material, free of particles larger than 1 inch to a height of 12 inches over the utility pipe or conduit.

1. Carefully compact material under pipe haunches and bring backfill evenly up on both sides and along the full length of utility piping or conduit to avoid damage or displacement of utility system.

D. Coordinate backfilling with utilities testing.

E. Fill voids with approved backfill materials while shoring and bracing, and as sheeting is removed.

F. Place and compact final backfill of satisfactory soil material to final subgrade.

3.13 FILL

A. Preparation: Remove vegetation, topsoil, debris, unsatisfactory soil materials, obstructions, and deleterious materials from ground surface before placing fills.

B. Plow, scarify, bench, or break up sloped surfaces steeper than 1 vertical to 4 horizontal so fill material will bond with existing material.

C. Place and compact fill material in layers to required elevations as follows:

1. Under grass and planted areas, use satisfactory soil material.

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2. Under walks and pavements, use satisfactory soil material.

3. Under steps and ramps, use satisfactory or structural fill.

4. Under building slabs, use satisfactory or structural fill.

5. Under footings and foundations, use satisfactory or structural fill.

3.14 MOISTURE CONTROL

A. Uniformly moisten or aerate subgrade and each subsequent fill or backfill layer before compaction to within 3 percent of optimum moisture content.

1. Do not place backfill or fill material on surfaces that are muddy, frozen, or contain frost or ice.

2. Remove and replace, or scarify and air-dry, otherwise satisfactory soil material that exceeds optimum moisture content by 2 percent and is too wet to compact to specified dry unit weight.

3.15 COMPACTION OF BACKFILLS AND FILLS

A. Place backfill and fill materials in layers not more than 8 inches in loose depth for material compacted by heavy compaction equipment, and not more than 4 inches in loose depth for material compacted by hand-operated tampers.

B. Place backfill and fill materials evenly on all sides of structures to required elevations, and uniformly along the full length of each structure.

C. Compact soil to not less than the following percentages of maximum dry unit weight according to ASTM D 698 or ASTM D-1557:

1. Under structures, building slabs and steps:

a. Scarify and recompact top 12 inches of existing subgrade material at 95 percent standard density.

b. Initial layers of select fill shall be compacted to 98% modified density.

c. The final 18" layer of select fill shall be compacted to 98% standard density.

2. Under structures, building slabs and steps (Modified by Addendum No. 1):

a. Scarify and recompact top 12 inches of existing subgrade.

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b. Moisture condition exposed subgrades to 2 to 3% of the material's optimum water content.

c. Recompact subgrade to 95% of the material's ASTM D698 standard density.

d. Place select fill material in "lifts" not exceeding 8" loose mearsure and compact each lift to at least 98% of the material's ASTM D1557 modified density.

3. Under walkways, scarify and recompact top 6 inches below subgrade and compact each layer of backfill or fill material at 95 percent standard density.

4. Under lawn or unpaved areas, scarify and recompact top 6 inches below subgrade and compact each layer of backfill or fill material at 90 percent standard density.

3.16 GRADING

A. General: Uniformly grade areas to a smooth surface, free from irregular surface changes. Comply with compaction requirements and grade to cross sections, lines, and elevations indicated.

1. Provide a smooth transition between adjacent existing grades and new grades.

2. Cut out soft spots, fill low spots, and trim high spots to comply with required surface tolerances.

B. Site Grading: Slope grades to direct water away from buildings and to prevent ponding. Finish subgrades to required elevations within the following tolerances:

1. Lawn or Unpaved Areas: Plus or minus 1 inch.

2. Walks: Plus or minus 1 inch.

3. Pavements: plus or minus ½ inch.

C. Grading inside Building Lines: Finish subgrade to a tolerance of 1/2 inch when tested with a 10-foot straightedge.

D. Topsoil: All areas disturbed by grading or other construction operations or as shown on the Site Plan, not occupied by the building or pavement, shall receive 4 inch minimum thickness topsoil from on-site stockpile or from approved off-site sources.

E. It shall be the contractor's responsiblity to hold finished grade including landscaping to grade shown on civil drawings. Do not cover over masonry weeps. Do cover concrete foundations so that no concrete is exposed.

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3.17 BASE COURSES

A. Under pavements, place base course material on prepared subgrades. Refer to paragraph 3.21 for Contractor's Option regarding base course application for pavement systems.

1. Compact base courses at optimum moisture content to required grades, lines, cross sections and thickness to not less than 100 percent of ASTM D698 standard density.

2. Shape base to required crown elevations and cross-slope grades.

3. When thickness of compacted base course is 6 inches or less, place materials in a single layer.

4. When thickness of compacted base course exceeds 6 inches, place materials in equal layers, with no layer more than 6 inches thick or less than 3 inches thick when compacted.

3.18 PLANTING SOIL PREPARATION

A. Limit subgrade to areas that will be planted in the immediate future.

B. Loosen subgrade to a minimum depth of 4 inches. Remove stones larger than 1-1/2 inches in any dimension and sticks, roots, rubbish, and other extraneous matter.

C. Spread topsoil mixture to depth required to meet thickness, grades, and elevations shown, after light rolling and natural settlement. Do not spread if planting soil or subgrade is frozen.

1. Place approximately ½ the thickness of topsoil mixture required. Work into top of loosened subgrade to create a transition layer and then place remainder of planting soil mixture.

2. Allow for sod thickness in areas to be sodded.

D. Preparation of Unchanged Grades: Where lawns are to be planted in areas unaltered or undisturbed by excavating, grading, or surface soil stripping operations, prepare soil as follows:

1. Remove and dispose of existing grass, vegetation, and turf. Do not turn over into soil being prepared for lawns.

2. Till surface soil to a depth of at least 6 inches. Apply required soil amendments and initial fertilizers and mix thoroughly into top 4 inches of soil. Trim high areas

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and fill in depressions. Till soil to a homogenous mixture of fine texture.

3. Clean surface soil of roots, plants, sod, stones, clay lumps, and other extraneous materials harmful to plant growth.

4. Remove waste material, including grass, vegetation, and turf, and legally dispose of it off the Government's property.

E. Grade lawn and grass areas to a smooth, even surface with loose, uniformly fine texture. Roll and rake, remove ridges, and fill depressions to meet finish grades. Limit fine grading to areas that can be planted in the immediate future. Remove trash, debris, stones larger than 1-1/2 inches in any dimension, and other objects that may interfere with planting or maintenance operations.

F. Moisten prepared lawn areas before planting when soil is dry. Water thoroughly and allow surface to dry before planting. Do not create muddy soil.

G. Restore prepared areas if eroded or otherwise disturbed after fine grading and before planting.

3.19 DRAINAGE COURSE

A. Under slabs-on-grade, place drainage course on prepared subgrade and as follows:

1. Compact drainage course to required cross sections and thickness to not less than 95 percent of maximum dry unit weight according to ASTM D 698.

2. When compacted thickness of drainage course is 6 inches or less, place materials in a single layer.

3.20 PAVEMENT SUBGRADES

A. Construction Methods - Contractor's Option:

1. The Contractor shall have the following options for pavement subgrade preparation. Selection of the option shall be at the Contractor's discretion.

a. Lime Stabilization (DELETED BY ADDENDUM NO. 1):

1) If this option is selected, the slurry application method of lime stabilization described in ALDOT Section 232 shall be utilized without exception. Dry application method will not be accepted. Comply with all requirements of ALDOT Section 232 to ensure proper application of lime stabilization utilizing the slurry application method.

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2) Contractor shall coordinate slurry installation with weather conditions and ensure application is accomplished in a manner that will prevent the spread of lime dust by wind or other conditions. Coordinate with Contracting Officer Representative on site to confirm required environmental conditions are met and all necessary preventative measures are in place to prevent windblown dust/debris from posing a risk to adjacent aircraft apron.

3) The properly stabilized, mixed, and cured lime sub-grade soil shall be compacted to at least 100% ASTM D-698 standard density. The optimum moisture content of the stabilized sub-grade shall be maintained until commencement of paving.

4) The volume of lime required shall be determined by laboratory testing of the final sub-grade soil just prior to the beginning of lime stabilization;

however, for budget purposes, it is estimated that approximately 75 to 85 lbs. of lime per square yard per 12" thickness of treated surface area will be required.

5) Lime stabilization is described by ALDOT Section 232-Class 2.

b. ALDOT Section 230 Improved Roadbed "Select Fill"

1) If this option is selected, the Contractor shall overexcavate and backfill pavement areas with 18" of "select fill" in accordance with ALDOT Section 230.

2) The lower 6" of "select fill" shall be compacted to 95% modified density.

3) The upper 12" of "select fill" shall be compacted to 98% modified density.

c. ALDOT Section 825 Crushed Aggregate:

1) If this option is selected, the Contractor shall over excavate and backfill pavement areas with 9" of crushed aggregate in accordance with ALDOT Section 825.

2) The crushed aggregate fill shall be compacted to 100% modified density.

2. Once a subgrade preparation method is selected, the Contractor shal utilize the same selected subgrade preparation method at all applicable applications.

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3.21 FIELD QUALITY CONTROL

A. Testing Agency: Contractor will engage a qualified independent geotechnical engineering testing agency to perform field quality-control testing.

B. Allow testing agency to inspect and test subgrades and each fill or backfill layer.

Proceed with subsequent earthwork only after test results for previously completed work comply with requirements.

C. Footing Subgrade: At footing subgrades, at least one test of each soil stratum will be performed to verify design bearing capacities. Subsequent verification and approval of other footing subgrades may be based on a visual comparison of subgrade with tested subgrade when approved by the Government.

D. Testing agency will test compaction of soils in place according to ASTM D 1556.

Tests will be performed at the following locations and frequencies:

1. Building Slab and Pavement Areas: At subgrade and at each compacted fill and backfill layer, at least one test for every 4,000 sq. ft. of fill area per each foot of vertical thickness placed on the building area and one per 6,000 sq.ft. in the pavement areas, but in no case fewer than three tests.

2. Trench Backfill: At each compacted initial and final backfill layer, at least one test for each 50 feet or less of trench length, but no fewer than two tests.

E. When testing agency reports that subgrades, fills, or backfills have not achieved degree of compaction specified, scarify and moisten or aerate, or remove and replace soil to depth required; recompact and retest until specified compaction is obtained.

3.22 PROTECTION

A. Protecting Graded Areas: Protect newly graded areas from traffic, freezing, and erosion. Keep free of trash and debris.

B. Repair and reestablish grades to specified tolerances where completed or partially completed surfaces become eroded, rutted, settled, or where they lose compaction due to subsequent construction operations or weather conditions.

1. Scarify or remove and replace soil material to depth as directed by the Government; reshape and recompact.

C. Where settling occurs before Project correction period elapses, remove finished surfacing, backfill with additional soil material, compact, and reconstruct surfacing.

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1. Restore appearance, quality, and condition of finished surfacing to match adjacent work, and eliminate evidence of restoration to the greatest extent possible.

3.23 DISPOSAL OF SURPLUS AND WASTE MATERIALS

A. Disposal: Remove surplus satisfactory soil and waste material, including unsatisfactory soil, trash, and debris, and legally dispose of it off the Government's property, unless instructed otherwise by the Contracting Officer.

END OF SECTION

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SECTION 099600 - HIGH-PERFORMANCE COATINGS

PART 1 GENERAL

1.01 1.01 SECTION INCLUDES

A. High performance coatings where noted on the drawings.

B. Moisture resistant epoxy resin primer. (Added by Addendum No. 1)

C. Special preparation of surfaces.

D. Materials included in this section shall meet the requirements for High Performance Sustainable Buildings for New Construction points for the following Sections:

1. 2-5.3.2 - Reduce Volatile Organic Compounds (VOC) Low-Emitting Materials

2. The contractor is expected to understand the HPSB requirements for these sections and include all applicable overhead in their base bid for the necessary documentation to achieve the above listed credits.

1.02 RELATED REQUIREMENTS

A. Section 01 3325 - Project Sustainability Summary

B. Section 01 3329 - Sustainable Design Reporting

C. Section 01 6000 - Product Requirements

D. Section 01 7419 - Construction Waste Management and Disposal

E. Section 01 6116 - Volatile Organic Compound (VOC) Content Restrictions.

F. Section 03 3000 - Cast-In-Place Concrete

G. Section 09 9000 - Painting and Coating.

1.03 REFERENCE STANDARDS

A. ASTM E 84 - Standard Test Method for Surface Burning Characteristics of Building Materials; 2010.

B. SSPC-SP 2 - Hand Tool Cleaning; Society for Protective Coatings; 1982 (Ed. 2004).

C. SSPC-SP 3 - Power Tool Cleaning; Society for Protective Coatings; 1982 (Ed. 2004).

D. ASTM Standards

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1. ASTM C 307 - Standard Test Method for Tensile Strength of Chemical-Resistant Mortar, Grouts, and Monolithic Surfacings.

2. ASTM C 579 - Standard Test Methods for Compressive Strength of Chemical- Resistant Mortars, Grouts, Monolithic Surfacings, and Polymer Concretes.

3. ASTM C 580 - Standard Test Method for Flexural Strength and Modulus of Elasticity of Chemical-Resistant Mortars, Grouts, Monolithic Surfacings, and Polymer Concretes.

4. ASTM D 635 - Standard Test Method for Rate of Burning and/or Extent and Time of

5. ASTM D 3960 - Standard Practice for Determining Volatile Organic Compound (VOC) Content of Paints and Related Coatings.

6. ASTM D 4226 - Standard Test Methods for Impact Resistance of Rigid Poly(Vinyl Chloride) (PVC) Building Products.

7. ASTM D 4541 - Standard Test Method for Pull-Off Strength of Coatings Using Portable Adhesion Testers.

8. ASTM F 1869 - Standard Test Method for Measuring Moisture Vapor Emission Rate of Concrete Subfloor Using Anhydrous Calcium Chloride.

9. ASTM F 2170 - Standard Test Method for Determining Relative Humidity in Concrete Floor Slabs Using in situ Probes.

10. ASTM G 21 - Standard Practice for Determining Resistance of Synthetic Polymeric Materials to Fungi.

E. National Floor Safety Institute (NFSI) (Added by Addendum No. 2)

1. ANSI/NFSI B101.1 - Test Method for Measuring Wet SCOF of Common Hard- Surface Floor Materials.

1.04 SUBMITTALS

A. See Section 01 3001 - Submittals for Submittal procedures.

B. Product Data:

1. Manufacturer's data sheets on each product to be used, including properties, VOC content, wet static coefficient of friction, compressive strength, tensile strength, elongation and similar properties.

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2. Preparation instructions and recommendations.

3. Storage and handling requirements and recommendations.

4. Typical installation methods.

C. Manufacturer's Installation Instructions: Indicate special procedures, perimeter conditions requiring special attention, and recommended cleaning procedures for preparing existing concrete floor slabs to receive new coating. .

D. Sample: Provide 12" x 12" sample of proposed epoxy floor finish to the Government for approval of color and gloss level.

E. Maintenance Data: Include cleaning procedures and repair and patching techniques.

F. Maintenance Materials: Furnish the following for the Government's use in maintenance of project.

1. Extra Coating Materials: 1 gallon (4 liters) of each type and color.

2. Label each container with manufacturer's name, product number, color number, and room names and numbers where used.

G. Sustainability Submittals, Product data for HPSB Compliance:

1. For products containing VOCs, documentation (material safety data sheets (MSDS), third-party certificates, or test reports) showing printed statement of VOC content.

2. VOC Content Limitations: For the specified products, submit documentation of conformance with Specification Section 01 6116 - Volatile Organic Compound (VOC) Content Restrictions.

1.05 QUALITY ASSURANCE

A. Maintain one copy of each referenced document that applies to application on site.

B. Manufacturer Qualifications: Company specializing in manufacturing the Products specified in this section with minimum three years documented experience.

C. Applicator Qualifications: Company specializing in performing the work of this section with minimum 3 years documented experience.

D. Source Limitations: Provide each type of product from a single manufacturing source to ensure uniformity.

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1.06 MOCK-UP

A. Provide mock-up, 10 feet long by 10 feet wide, illustrating color and sheen for each specified coating.

B. Locate where directed.

C. Mock-up may remain as part of the Work.

1.07 FIELD CONDITIONS

A. Apply flooring system under the following ambient conditions

1. Ambient and Concrete Floor Temperatures: Between 40 and 85 degrees F (4 and 29 degrees C).

2. Material Temperature: Between 50 and 80 degrees F (10 and 27 degrees C).

3. Relative Humidity: Maximum 80 percent.

4. Dew Point: Floor temperature more than 5 degrees over dew point.

B. Provide lighting level of 80 ft candles (860 lx) measured mid-height at substrate surface.

C. Restrict traffic from area where coating is being applied or is curing.

D. Do not apply flooring system under ambient conditions outside manufacturer’s limits.

1.08 WARRANTY

A. See Section 01 7800 - Closeout Submittals, for additional warranty requirements.

B. Correct defective Work within a five year period after Date of Beneficial Occupancy.

C. Warranty: Include coverage for bond to substrate and degradation of chemical resistance.

PART 2 PRODUCTS

2.01 HIGH-PERFORMANCE COATINGS

A. Provide coating systems that meet the following minimum performance criteria, unless more stringent criteria are specified:

1. Abrasion Resistance: 18 mg loss, when tested in accordance with ASTM D4060. )

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B. Moderate Exposure: All minimum criteria, plus:

2.02 MATERIALS

A. Coatings - General: Provide complete multi-coat systems formulated and recommended by manufacturer for the applications indicated, in the thicknesses indicated; number of coats specified does not include primer or filler coat.

B. Polyurethane Floor Coating: Three coats, moisture cure polyurethane, non-skid finish, matte finish. (Deleted by Addendum No. 1)

1. Product characteristics:

a. Percentage of solids by weight (ASTM D2369): 99.35 - Part A; 59.23 - Part B, 100 - Part C, minimum.

b. Dry film thickness, per coat: 3.0, minimum.

c. VOC Content per ASTM D3960 (Mixed): 86 g/L maximum A+B+C

d. Abrasion Resistance: mg loss ASTM D4060 = 18.0

e. Coefficient of Friction ASTM D2047 = 0.63

f. Tension Strength (psi) Resin Only - ASTM C2370= 6,250

2. Chemical Resistance Properties:

a. Product shall have excellent resistant (in both 1 day and 7 day tests) to the following materials:

1) Acids (Inorganic): 10% Hydrochloric Acid, 30% Hydrochloric Acid, 10% Nitric Acid, 37% Sulfuric Acid,

2) Acids (Organic): 10% Acetic Acid, 10% Citric Acid, Oleic Acid,

3) Alkalies: 10% Ammonium Hydroxide, 50% Sodium Hydroxide,

4) Solvents(Alcohols): Ethylene Glycol (Antifreeze), Isopropyl Alcohol, Methanol

5) Solvents (Aliphatic:) d-Limonene, Jet Fuel (JP-4), Gasoline, Mineral Spirits

6) Solvents (Aromatic) Xylene

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7) Solvents (Ketones & Esters): Methyl Ethyl Ketone, Propylene Glycol Methyl, Ether Acetate

8) Miscellaneous: 20% Ammonium Nitrate, Chemicals Brake Fluid, Bleach, Motor Oil (SAE30), Skydrol® 500B, Skydrol® LD4, 20% Sodium Chloride, 1% Tide® Laundry Soap, 10% Trisodium Phosphate

3. Primer for concrete: Two component epoxy primer as recommended by the coating manufacturer. (Deleted by Addendun No. 1)

4. Colorant: As selected by the Contracting Officer from the manufacturer's full range of available color.

5. Gloss: Satin

6. Traction Grit: Provide aluminum oxide grit materials as recommended by the manufacturer.

7. Cleaners & Related Products: Provide Industrial Grease Remover, detergents, cleaners, and etchants as recommended by the manufacturer for applications indicated on the contract documents.

C. Epoxy Resin Base Coat / Primer (Added by Addendum No. 1)

1. Contractor shall provide and install 2-part epoxy resin primer as reccommended by the top coat manufacturer to ensure a successful and warrantable installation of specified topcoat.

2. Epoxy resin primer shall be designed and installed as recommended by the manufacturer to be moisture insensitive to 15lbs (as measured by ASTM F1869) or less up to 97% relative humidity (as measured by ASTM F2170). Refer to

3.01 below for slab moisture testing requirements.

3. Notify Contracting Officer prior to proceeding if slab moisture levels exceed 15lbs or 97% relative humidity.

4. Install epoxy resin primer as required to be moisture insensitive to 15 lbs or 97% relative humidity even if test results suggest moisture levels are below thresholds for alternative (less moisture insensitive) primer systems.

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PART 3 EXECUTION

3.01 EXAMINATION

A. Examine concrete surfaces to receive flooring system. Verify concrete is structurally sound.

B. Moisture Testing of Concrete: Perform at least one of the following two tests to determine moisture in concrete. Type of test and frequency as recommended by manufacturer and installer.

1. Calcium Chloride Test:

a. Measure moisture vapor emission rate of concrete in accordance with ASTM F 1869.

b. Application of flooring system shall start only if test results are below 12 pounds per 1,000 sq.ft (1.5kg/93 sq.m) over a 24-hour period.(Deleted by Addendum No. 1)

c. Application of flooring system shall start only if test results are below 15 pounds per 1,000 sq.ft over a 24-hour period. (Added by Addendum No. 1)

d. If test results are above limits, notify Contracting Officer and flooring manufacturer in writing.

2. In-situ Probe Test:

a. Measure relative humidity in concrete in accordance with ASTM F 2170.

b. Application of flooring system shall start only if test results are below 85 percent relative concrete humidity. (Deleted by Addendum No. 1)

c. Application of flooring system shall start only if test results are below 97 percent relative concrete humidity. (Added by Addendum No. 1)

d. If test results are above limits, notify Contracting Officer and flooring manufacturer in writing.

C. Do not begin preparation or installation until satisfactory moisture test results are achieved. Provide flooring manufacturer's recommended moisture vapor control coating if required. epoxy resin base coat / primer as specified in part 2 above.

(Modified by Addendum No. 1)

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3.02 PREPARATION

A. Clean surfaces thoroughly prior to installation.

B. Protection of In-Place Conditions: Protect adjacent surfaces and adjoining walls from contact with flooring system materials.

C. Surface Preparation:

1. Prepare concrete surface in accordance with manufacturer’s instructions.

2. Remove dirt, dust, debris, oil, grease, curing agents, bond breakers, paint, coatings, sealers, silicones, and other surface contaminants which could adversely affect application of flooring system.

3. Steel shot blast concrete to a minimum surface profile of ICRI 310.2R, CSP 5.

4. Key-cut termination points with 1/4-inch (6-mm) by 1/4-inch (6-mm) cut.

5. Patch depressions, divots, and cracks in concrete in accordance with manufacturer’s instructions.

6. Mechanically remove loose, delaminated, and damaged concrete and repair in accordance with manufacturer’s instructions.

7. Joints: Fill joints in accordance with manufacturer’s instructions.

3.03 INSTALLATION

A. Install flooring system in accordance with manufacturer’s…