36C78620R0020-004.pdf

Bakersfield National Cemetery Admin/PIC and Restroom Buildings Arvin, California Berm Restoration Project 929-MM-19-007

ATTACHMENT B — SPECIFICATIONS

SECTION DIVISION 03 – CONCRETE

03 36 16 REACTIVE CHEMICAL CONCRETE STAIN

SECTION DIVISION 4 – MASONRY

04 20 00 UNIT MASONRY

SECTION DIVISION 31 – EARTHWORK

31 32 13 SOIL STABILIZATION SYSTEM

SECTION DIVISION 32 – EXTERIOR IMPROVEMENTS

32 84 00 PLANTING IRRIGATION

32 90 00 PLANTING

03 36 16 - 1

SECTION 033616

REACTIVE CHEMICAL CONCRETE STAIN

PART 1 - GENERAL

1.1 SUMMARY

A. Section includes:

1. Chemically stained concrete wall finish.

2. Sealer.

1.2 REFERENCES

A. ASTM International (ASTM):

1. ASTM C 171: Standard Specification for Sheet Materials for

Curing Concrete.

2. ASTM C 309: Standard Specification for Liquid Membrane-Forming

Compounds for Curing Concrete.

3. ASTM F 1869: Standard Test Method for Measuring Moisture Vapor

Emission Rate of Concrete Subfloor Using Anhydrous Calcium

Chloride.

1.3 SUBMITTALS

A. Product Data: Manufacturer’s technical data, including Safety Data

Sheet (SDS) and installation instructions, for each product specified.

B. Qualification Data: For manufacturer and Installer.

1.4 QUALITY ASSURANCE

A. Manufacturer Qualifications: Minimum 10 years of documented experience producing the specified products.

B. Installer Qualifications: Minimum 2 years of documented experience with work of similar scope and complexity required by this Project and acceptable to, or certified by, concrete stain manufacturer.

C. Regulatory Requirements:

1. Products to comply with United States Clean Air Act for maximum

Volatile Organic compound (VOC) content as specified in this

Section.

D. Material Source: Obtain each specified material from the same source.

E. Notification: Give a minimum 7 calendar days’ notice to manufacturer’s authorized field representative before date established for commencement of concrete stain work.

F. Concrete Stain Finish Mock-ups:

1. Select inconspicuous locations below proposed finish grade on the existing walls to use in recreating the existing concrete stain

03 36 16 - 2 finish to match the existing walls. Location to be selected by

COR. Provide at least Six (6) 1 square-foot patches with stains diluted with water in ratios of 5:1; 15:1; and 30:1 until the required match of existing stained concrete finish is achieved and approved by the COR.

2. Provide individual mockups for each color/color combination required. Refer to Part 3 – Execution for procedures.

3. Mockups are to be stained and sealed by the Installer who will actually perform the work for the Project. Record the amount of chemical stain needed per square foot of application to establish coverage rates for the work.

4. Notify COR a minimum of seven calendar days in advance of the date scheduled for the stain finish mockup recreation.

5. Obtain the COR’s acceptance of mockup prior to commencement of the work.

6. Provide a final mock-up using approved stain combinations and water ratios with leading edge barely overlapping the existing stained concrete. Mask existing concrete to protect adjacent stained surfaces from overspray, runoff, and tracking. Use blending techniques such as ragging and dry brushing to achieve a seamless appearance between existing and newly stained concrete.

7. Each mockup to remain until completion of the work to serve as a quality control standard for the work. Provide suitable protections to preclude damage to mockup.

1.5 DELIVERY, STORAGE, AND HANDLING

A. Deliver products in original factory unopened, undamaged packaging bearing identification of product, manufacturer, batch number, and expiration date as applicable.

B. Store products in a location protected from damage, construction activity, and adverse environmental conditions, and away from combustible materials and sources of heat, according to manufacturer’s printed instructions and current recommendations.

C. Handle products according to manufacturer’s printed instructions.

1.6 PROJECT CONDITIONS

A. Environmental Conditions: Maintain an ambient temperature between 50 deg F and 90 deg F during application and at least 48 hours after application.

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1.7 PREINSTALLATION CONFERENCE

A. Seven calendar days prior to scheduled date of installation, conduct a meeting at Project site to discuss requirements, including application methods. Attendees to include COR, Contractor, Installer.

PART 2 - PRODUCTS

2.1 ACCEPTABLE MANUFACTURERS

A. Basis of Design: Provide products specified herein manufactured by L.

M. Scofield Company (Scofield).

2.2 CONCRETE STAIN

A. Reactive Chemical Concrete Stain: Reactive, water-based solution of metallic salts which react with calcium hydroxide in cured concrete substrates to produce permanent variegated or translucent color effects. Zero VOC content.

1. Product: Scofield’s “LITHOCHROME Chemstain Classic.”

2. Colors (To Match Existing):

a. CS-15 Antique Amber

b. CS-2 Padre Brown

2.3 CONCRETE SEALER

A. Water-based, Clear, VOC Compliant(VOC<100g/L) medium-duty concrete sealer with a low-gloss finish. Sealer shall be compatible with chemical concrete stain and recommended by the manufacturer for use on exterior colored concrete.

B. Sealing compound shall seal concrete from stains and liquids while providing minimal alteration to color.

C. Available Product: L.M. SCOFIELD “CEMENTONE® Clear Sealer”; or equal.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine areas and conditions under which the concrete stain work will be performed and identify conditions detrimental to the proper and timely completion of the work. Do not proceed until unsatisfactory conditions have been corrected.

3.2 PREPARATION

A. Surface Preparation for Existing Concrete:

1. Remove existing water-proofing membrane, adhesive, nails, and other substances adhering to the wall, to expose unstained wall to within 2-inches above the existing drainage mat.

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2. Remove fins, burrs, grout at tie holes, and similar projections on surfaces flush, and smooth by mechanical means approved by

COR, and by rubbing lightly with a fine abrasive stone or hone.

Use ample water during rubbing without working up a lather of mortar or changing texture of concrete.

a. Pressure Washing: Use a pressure washer equipped with a fan tip and rated for a minimum pressure capability of 4000 psi.

b. Light sanding of the surface.

3. Concrete surfaces should be completely penetrable before applying the initial application of chemical stain. The surface of the concrete should be lightly mechanically abraded to remove weak cement paste and contaminants.

4. Surfaces should be tested to receive stain by spotting with water. Water should immediately darken the substrate and be readily absorbed. If water beads and does not penetrate or only penetrates in some areas, perform additional surface preparation and testing. On denser concrete, sand lightly to open up surfaces. Retest and continue surface preparation until water spots immediately darken and uniformly penetrate concrete surfaces.

5. Rinse concrete substrates until rinse water is completely clean.

3.3 CHEMICAL STAIN APPLICATION

A. General: Comply with chemical stain manufacturer’s printed instructions and current recommendations.

1. Do not mix the specified chemical stain with highly alkaline materials. Doing so will result in a dangerous chemical reaction.

B. Protect surrounding areas, landscaping, and adjacent surfaces from overspray, runoff, and tracking. Divide surfaces into small work sections using walls, joint lines, or other stationary breaks as natural stopping points.

C. Mask existing stained concrete surfaces from overspray, runoff, and tracking. Masking should protect existing edge showing full stain concentration.

D. Apply chemical stains to match existing walls of building and in accordance with approved mock-ups at the coverage rate recommended by the manufacturer and use application equipment according to the

03 36 16 - 5 chemical stain manufacturer’s printed instructions. Note the color of the liquid chemical stain will not be the final color produced on the concrete substrate.

1. Apply stain to wall surfaces exposed to public view up to the edge of the water-proofing membrane.

E. Transfer chemical stain to the substrate by brush or spray and immediate scrub into surface. Reaction time depends on wind conditions, temperatures, and humidity levels.

F. Blend overlap with existing edge of stained concrete using method(s) approved in the final mock-up.

G. When multiple coats of one or more colors are required, washing and drying between colors is desirable to evaluate the color prior to the next coat.

H. Rinsing: After the final coat of chemical stain has remained on the surface for a minimum of four hours, neutralize unreacted chemical stain residue and then remove completely prior to sealing. After neutralization, thoroughly rinse surface with clean water several times to remove soluble salts. While rinsing, lightly abrade surface using a low-speed floor machine and red pad to remove residue and weakened surface material. Runoff may stain the adjacent areas or harm plants. Collect rinse water by wet vacuuming or absorbing with an inert material.

1. Failure to completely remove all residue prior to sealing the surface will cause appearance defects, adhesion loss or peeling, reduced durability, and possible bonding failure and delamination of sealer.

2. All stain residue, runoff liquid, and rinse water must be collected and disposed of according to applicable Federal regulations and governing authorities having jurisdiction.

3.4 SEALING APPLICATION

A. Concrete substrate must be completely dry. Test surface for proper pH prior to applying sealer. A pH value of 7 or higher indicates all acid has been neutralized. If the tested pH value is less than 7, repeat neutralization step until the required pH value is achieved.

B. Conduct a moisture vapor emission test prior to applying any sealer.

Refer to the specific sealer’s Technical-Data Bulletin for acceptable

MVER.

03 36 16 - 6

C. Apply sealer according the sealer manufacturer’s printed instructions at a rate of 300 to 500 square feet per gallon per coat. Maintain a wet edge at all times.

D. Allow sealer to completely dry before applying additional coats.

E. Apply second coat of sealer at 90 degrees to the direction of the first coat using the same application method and rates.

3.5 PROTECTION

A. Protect finished wall surfaces from damage after sealer has cured.

- - - E N D - - -

04 20 00 - 1

SECTION 04 20 00

UNIT MASONRY

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Concrete masonry unit (CMU) assemblies for exterior walls.

2. Mortar and grout.

3. Reinforcing steel.

4. Control joint materials.

5. Damp-proofing.

1.2 APPLICABLE PUBLICATIONS

A. Comply with references to extent specified in this section.

B. CBC: 2016 California Building Code.

C. TMS 602 2013 Specification for Masonry Structures.

D. American Concrete Institute (ACI):

1. 315-99 - Details and Detailing of Concrete Reinforcement.

2. 530.1/ASCE 6/TMS 602-13 - Specification for Masonry Structures.

E. ASTM International (ASTM):

1. A615/A615M-15ae1 - Deformed and Plain Carbon-Steel Bars for Concrete

Reinforcement.

2. A951/A951M-14 - Steel Wire for Masonry Joint Reinforcement.

3. A1064/A1064M-15 - Carbon-Steel Wire and Welded Wire Reinforcement, Plain and Deformed, for Concrete.

4. ASTM C140/C140M Standard Test Method for Sampling and Testing

Concrete Masonry Units.

5. ASTM C150/C150M Standard Specification for Portland Cement.

6. ASTM C270 Standard Specification for Mortar for Unit Masonry.

7. ASTM C476 Standard Specification for Grout for Unit Masonry.

8. ASTM C595/C595M Standard Specification for Blended Hydraulic

Cements.

9. ASTM C618 Standard Specification for Coal Fly Ash and Raw or

Calcined Natural Pozzolan for use in Concrete.

10. ASTM C989/C989M Standard Specification for Slag Cement for Use in

Concrete and Mortars.

11. ASTM C1019 Standard Test Method for Sampling and Testing Grout.

12. ASTM C1314 Standard Test Method for Compressive Strength of Masonry

Prisms.

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13. ASTM C1586 Standard Guide for Quality Assurance of Mortars.

14. ASTM C1611/C1611M Standard Test Method for Slump Flow of Self-

Consolidating Concrete.

15. ASTM C1714/C1714M Standard Specification for Preblended Dry Mortar

Mix for Unit Masonry.

16. ASTM D2000 Classification System for Rubber Products in Automotive

Applications.

17. ASTM D2287 Standard Specification for Nonrigid Vinyl Chloride

Polymer and Copolymer Molding and Extrusion Compounds.

1.3 SUBMITTALS

A. Submittal Procedures: Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES.

B. Submittal Drawings:

1. Fabrication, bending, and placement of reinforcing bars. Comply with

ACI 315. Show bar schedules, diagrams of bent bars, stirrup spacing, lateral ties and other arrangements and assemblies.

2. Special masonry shapes, profiles, and placement.

C. Manufacturer's Literature and Data:

1. Description of each product.

2. Installation instructions.

D. Samples for Verification:

1. Concrete masonry units: For each face design, color, and texture when exposed in finish work.

E. Delegated Design Drawings and Calculations: Signed and sealed by responsible design professional.

1.4 QUALITY ASSURANCE

A. Mockups:

1. Before starting masonry, build a mockup panel minimum 1800 mm by

1800 mm (6 feet by 6 feet) with 600 mm (24 inch) 90 degree return for outside corner.

a. Use masonry units from random cubes of units delivered on site.

b. Include structural backup, reinforcing, ties, and anchors.

2. Mockup panel approved by Contracting Officer's Representative set workmanship and aesthetic quality for masonry work.

3. Clean sample panel to test cleaning methods.

4. Approved mockup may be retained as part of the completed work.

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5. Remove mockup panel when directed by Contracting Officer's

Representative.

1.5 DELIVERY

A. Deliver products in manufacturer's original sealed packaging.

B. Mark packaging, legibly. Indicate manufacturer's name or brand, type, color, finish, production run number, and manufacture date.

C. Before installation, return or dispose of products within distorted, damaged, or opened packaging.

1.6 STORAGE AND HANDLING

A. Store products above grade, protected from contamination.

B. Protect products from damage during handling and construction operations.

C. Store preblended mortar mix in manufacturer’s original, unopened, undamaged containers with identification labels intact, covered and protected from weather.

1.7 FIELD CONDITIONS

A. Hot and Cold Weather Requirements: Comply with ACI 530.1/

ASCE 6/TMS 602.

1.8 WARRANTY

A. Construction Warranty: FAR clause 52.246-21, "Warranty of

Construction."

PART 2 - PRODUCTS

2.1 SYSTEM PERFORMANCE

A. Delegated Design: Prepare submittal documents including design calculations and drawings signed and sealed by registered structural engineer, licensed in state where work is located.

2.2 PRODUCTS - GENERAL

A. Provide each product from one manufacturer and from one production run.

2.3 UNIT MASONRY PRODUCTS

A. Concrete Masonry Units (CMU):

1. Hollow and Solid Load-Bearing Concrete Masonry Units: ASTM C90.

a. Unit Weight: Medium weight.

b. Color: To be selected by Project Manager from manufacturer’s full range of colors.

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2. Sizes: Modular, 200 mm by 200 mm 400 mm (8 inches by 8 inches by

16 inches) nominal face dimension.

3. Customized Units:

a. Vertical Score:

1) A single vertical score mid-length, 3/8-in wide and deep, simulates a raked joint.

b. Ground Face Units:

1) Burnished finish on exposed faces.

c. Cap Block:

1) Solid 200 mm by 200 mm 400 mm by(8 inches by 4 inches by

16 inches) nominal face dimension.

2) Burnished on all exposed surfaces (3 to 4 sides).

3) No Vertical Score.

4. Available Manufacturer:

a. Concrete masonry units:

1) Angelus Block Co., Inc. Sun Valley, CA (818) 767-8576; or approved equal.

2.4 MORTAR AND GROUT MATERIALS

A. Preblended Mortar:

1. Masonry Mortar Type S preblended factory mix: ASTM C270 and ASTM

C1714/C1714M.

2. Available Product: SPEC MIX Preblended Mortar Mix, by E-Z Mix, Inc.

a. Sun Valley, CA (818) 768-0568; or approved equal.

B. Grout for masonry: ASTM C476.

1. Fly ash: ASTM C618.

2. Ground granulated blast furnace slag: ASTM C989/C989M.

C. Water: Potable.

D. Admixtures:

1. PRE MIX Products Grout Additive manufactured by E-Z Mix, Inc. Use per manufacturer’s specifications.

2.5 ANCHORS, TIES, AND REINFORCEMENT

A. Steel Reinforcing Bars: ASTM A615/A615M; Grade 60, deformed bars.

B. Joint Reinforcement:

1. Form from wire complying with ASTM A951/A951M.

2. Hot dipped galvanized after fabrication.

3. Width of joint reinforcement 40 mm (1.6 inches) less than nominal thickness of masonry wall or partition.

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2.6 ACCESSORIES

A. Cold-Applied, Emulsified-Asphalt Dampproofing:

1. Trowel Coats: ASTM D 1227, Type II, Class 1.

2. Fibered Brush and Spray Coats: ASTM D 1227, Type II, Class 1.

3. Brush and Spray Coats: ASTM D 1227, Type III, Class 1.

4. VOC Content: 0.25 lb/gal. (30 g/L) or less.

5. Approved Product: W.R. Meadows Sealmastic Emulsion Type II or Type

III, or approved equal.

6.

B. Preformed Compressible Joint Filler:

1. Thickness same as joint, and width to fill void completely behind backer rod.

2. Closed Cell Neoprene: ASTM D1056, Type 2, Class A, Grade 1, B2F1.

3. Non-Combustible Type: ASTM C612, Type 5, Max. Temp.1800 degrees F.

C. Joint Sealant Backer Rod:

1. Cylindrical Sealant Backings: ASTM C1330, Type C: Closed-cell material with a surface skin and of size and density to control sealant depth and otherwise contribute to producing optimum sealant performance.

D. Joint Sealant: Exterior Sealants:

1. Vertical surfaces: provide non-staining ASTM C920, Type S or M, Grade NS, Class 100/50, low-modulus, high strength.

2. Provide sealant at isolation joint locations where new CMU walls butt with existing cast-in-place concrete.

3. Available Product: Sikaflex-15LM, or approved equal.

4. Color: to match CMU mortar color.

E. Masonry Cleaner:

1. Detergent type cleaner selected for each type masonry.

2. Acid cleaners are not acceptable.

3. Use soapless type specially prepared for cleaning brick or concrete masonry as appropriate.

2.7 MIXING

A. Mortar:

1. Mix SPEC MIX Masonry Mortar preblended factory mix per manufacturer's recommendations.

B. Conventional Grout:

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1. Mix grout to a consistency that has a slump between 8 and 11 inches per TMS 602 Article 2.6 B.

C. Self-Consolidating Grout:

1. Job-site proportioning of self-consolidating grout is not permitted.

2. Do not add water at the job site except in accordance with the manufacturer's recommendations.

PART 3 - EXECUTION

3.1 INSTALLATION - GENERAL

A. Install products according to manufacturer's instructions and approved submittal drawings.

1. When manufacturer's instructions deviate from specifications, submit proposed resolution for Contracting Officer's Representative consideration.

B. Keep finish work free from mortar smears or spatters, and leave neat and clean.

C. Tooling Joints:

1. Do not tool until mortar has stiffened enough to retain thumb print when thumb is pressed against mortar.

2. Tool while mortar is soft enough to be compressed into joints and not raked out.

3. Finish joints in exterior face masonry work with jointing tool, and provide smooth, water-tight raked joint to match the simulated raked joint cast into the vertical joint in the concrete masonry unit block.

D. Before connecting new masonry with previously laid masonry, remove loosened masonry or mortar, and clean and wet work in place as specified under wetting.

E. Cut units as required to fit; use motor-driven masonry saw. Install cut units with cut surfaces concealed as much as possible.

3.2 INSTALLATION - REINFORCEMENT

A. Steel Reinforcing Bars:

1. Install reinforcing bars in cells of hollow masonry units where required for vertical reinforcement and in bond beam units for horizontal reinforcement.

2. Bond Beams:

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a. Form Bond beams of load-bearing concrete masonry units filled with grout and reinforced with two No. 15m (No. 5) reinforcing bars unless shown otherwise. Do not cut reinforcement.

b. Brake bond beams only at expansion joints and at control joints, if shown.

3. Running Bond:

a. Locate additional joint reinforcement in vertical and horizontal joints as indicated on drawings.

b. Anchor vertical reinforcement into foundation or wall or bond beam below.

c. Lay all masonry true, level, plumb, and in accordance with the drawings.

d. Ensure all vertical cells to be grouted are aligned and unobstructed openings for grout are provided in accordance with Project Drawings.

4. Grout openings:

a. Locate 75 mm by 75 mm (3 inches. by 3 inches.) min. cleanout holes at location of vertical reinforcement.

b. Keep grout space clean of mortar accumulation and debris.

Clean as work progresses and immediately before grouting.

3.3 INSTALLATION - CMU CONTROL JOINTS

A. Provide CMU control joints (CJ) where indicated on drawings.

B. Keep joint free of mortar and other debris.

C. Joints Occur In Masonry Walls:

1. Install cross shaped shear keys in concrete masonry unit wythe with preformed compressible joint filler on both sides of shear key.

D. Use standard notched concrete masonry units (sash blocks) made in full and half-length units where shear keys are used to create a continuous vertical joint.

E. Interrupt joint reinforcement at expansion and control joints.

F. Fill opening in exposed face of expansion and control joints with sealant.

3.4 INSTALLATION - CONCRETE MASONRY UNITS

A. Select and arrange units for exposed masonry to produce a uniform blend of colors and textures.

B. Mix units from several pallets or cubes as they are placed.

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C. Comply with construction tolerances in TMS 602 and Article 3.7.

D. Construct grout spaces free of mortar dropping, debris, and any material deleterious to grouting.

E. Types and Uses:

1. Provide special concrete masonry shapes as required, including cap and bond beam units, and corner units. Provide solid concrete masonry units, for caps and where full units cannot be installed, or where needed for anchorage of accessories.

F. Laying:

1. Lay concrete masonry units with 9 mm (3/8 inch) joints, in a running bond unless otherwise indicated in the Drawings.

2. Do not wet concrete masonry units before laying.

3. Lay first course in a full mortar bed.

4. Set anchorage items as work progress.

5. Where ends of anchors, bolts, and other embedded items, project into voids of units, completely fill voids with mortar or grout.

6. Provide 6 mm (1/4 inch) open joint for sealant between exterior concrete walls, and abutting masonry partitions.

7. Lay concrete masonry units with full face shell mortar beds and fill head joint beds for depth equivalent to face shell thickness.

8. Lay concrete masonry units so cores of units, that are to be filled with grout, are vertically continuous with joints of cross webs of such cores completely filled with mortar. Unobstructed core openings minimum 75 mm (3 inches) by 75 mm (3 inches).

9. Do not wedge masonry against steel reinforcing. Minimum 13 mm

(1/2 inch) clear distance between reinforcing and masonry units.

10. Install deformed reinforcing bars of sizes indicated on drawings.

11. At time of placement, ensure steel reinforcement is free of loose rust, mud, oil, and other contamination capable of affecting bond.

12. Place steel reinforcement at spacing indicated on drawings before grouting.

13. Minimum clear distance between parallel bars: One bar diameter.

14. Hold vertical steel reinforcement in place vertically by centering clips, caging devices, tie wire, or other approved methods.

15. Support vertical bars near each end and at maximum 192 bar diameter on center.

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16. Splice reinforcement or attach reinforcement to dowels by placing in contact and securing with wire ties.

17. Stagger splices in adjacent horizontal reinforcing bars. Lap reinforcing bars at splices a minimum of 40 bar diameters.

18. Grout cells of concrete masonry units, containing reinforcing bars, solid as specified.

19. Install cavity and joint reinforcement as masonry work progresses.

20. Rake joints 6 to 10 mm (1/4 to 3/8 inch) deep for pointing with colored mortar when colored mortar is not full depth.

G. Waterproofing:

1. P

3.5 GROUTING

A. Preparation:

1. Clean grout space of mortar droppings before placing grout.

2. Close cleanouts.

3. Install vertical solid masonry dams across grout space for full height of wall at intervals of maximum 9000 mm (30 feet).

4. Verify reinforcing bars are installed as indicated on drawings.

B. Placing:

1. Place grout in grout space in lifts as specified.

2. Consolidate each grout lift after free water has disappeared but before plasticity is lost.

3. Do not slush with mortar or use mortar with grout.

4. Interruptions:

a. When grouting must be stopped for more than an hour, top off grout 40 mm (1-1/2 inches) below top of last masonry course.

b. Grout from dam to dam on high lift method.

c. Longitudinal run of masonry may be stopped off only by raking back one-half masonry unit length in each course and stopping grout 100 mm (4 inches) back of rake on low lift method.

C. Puddling Method:

1. Consolidate by puddling with grout stick during and immediately after placing.

2. Grout cores of concrete masonry units containing reinforcing bars solid as masonry work progresses.

D. Low Lift Method:

1. Construct masonry to 1.5 m (5 feet) maximum height before grouting.

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2. Grout in one continuous operation and consolidate grout by mechanical vibration and reconsolidate after initial water loss and settlement has occurred.

E. High Lift Method:

1. Do not pour grout until masonry wall has cured minimum of 4 hours.

2. Place grout in 1.5 m (5 feet) maximum lifts.

3. Exception:

a. Where following conditions are met, place grout in 3.86 m

(12.67 feet) maximum lifts.

b. Masonry has cured minimum of 4 hours.

c. Grout slump is maintained between 250 and 275 mm (10 and

11 inches).

d. No intermediate reinforced bond beams are placed between top and bottom of grout lift.

4. When vibrating succeeding lifts, extend vibrator 300 to 450 mm (12 to 18 inches) into preceding lift.

3.6 PLACING REINFORCEMENT

A. General: Clean reinforcement of loose rust, mill scale, earth, ice or other materials which will reduce bond to mortar or grout. Do not use reinforcement bars with kinks or bends not shown on drawings or approved submittal drawings, or bars with reduced cross-section due to excessive rusting or other causes.

B. Position reinforcement accurately at spacing indicated on drawings.

Support and secure vertical bars against displacement. Install horizontal reinforcement as masonry work progresses. Where vertical bars are shown in close proximity, provide clear distance between bars of minimum one bar diameter or 25 mm (1 inch), whichever is greater.

C. Splice reinforcement bars only where indicated on drawings, unless approved by Contracting Officer's Representative. Provide lapped splices. In splicing vertical bars or attaching to dowels, lap ends, place in contact and wire tie.

D. Provide minimum lap as indicated on approved submittal drawings, or if not indicated, minimum 48 bar diameters.

3.7 CONSTRUCTION TOLERANCES

A. Lay masonry units plumb, level and true to line within tolerances according to ACI 530.1/ASCE 6/TMS 602 and as follows:

B. Maximum variation from plumb:

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1. In 3000 mm (10 feet) - 6 mm (1/4 inch).

2. In 6000 mm (20 feet) - 9 mm (3/8 inch).

3. In 12,000 mm (40 feet) or more - 13 mm (1/2 inch).

C. Maximum variation from level:

1. In any bay or up to 6000 mm (20 feet) - 6 mm (1/4 inch).

2. In 12,000 mm (40 feet) or more - 13 mm (1/2 inch).

3.8 INSTALLATION - ISOLATION JOINT

A. Where walls butt existing cast-in-place concrete structures, provide minimum 9 mm (3/8 inch) / maximum 12 mm (1/2 inch) separation.

B. Prepare joints in accordance with manufacturer's instructions.

C. Clean surfaces of joint to receive caulking or sealants leaving joint dry to the touch, free from frost, moisture, grease, oil, wax, lacquer paint, or other foreign matter that would tend to destroy or impair adhesion. Insert continuous full width strip of non-combustible type compressible joint filler.

D. Insert Install backing material, to form joints enclosed on three sides as required for specified depth of sealant. Set backer rod so that sealant depth is equal to 1/2 of joint width.

E. Apply non-staining masking tape to face of surfaces adjacent to joints before applying primers, caulking, or sealing compounds

F. Fill opening in exposed face of isolation joints with sealant.

G. Fill joints solidly with sealant and finish compound smooth. Tool exposed joints to form smooth and uniform beds, with slightly concave surface.

H. Remove masking tape immediately after tooling of sealant and before sealant face starts to “skin” over. Remove any excess sealant from adjacent surfaces of joint, leaving the surfaces in a clean finished condition.

3.9 DAMPPROOFING

A. Protection of Other Work: Mask or otherwise protect adjoining exposed surfaces from being stained, spotted, or coated with dampproofing.

Prevent dampproofing materials from entering and clogging weep holes and drains. Do not apply dampproofing to exposed surfaces of CMU.

B. Clean substrates of projections and substances detrimental to work;

fill voids, seal joints, and apply bond breakers if any, as recommended by prime material manufacturer.

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C. On Unexposed Face of Masonry Retaining Walls: Apply primer and 2 brush or 2 spray coats at not less than 1.25 gal./100 sq. ft. (0.5 L/sq. m);

or apply primer and 1 trowel coat at not less than 4 gal./100 sq. ft.

(1.6 L/sq. m).

D. Remove dampproofing materials from surfaces not intended to receive dampproofing.

3.10 CLEANING AND REPAIR

A. General:

1. Clean exposed masonry surfaces on completion.

2. Protect adjoining construction materials and landscaping during cleaning operations.

3. Cut out defective exposed new joints to depth of approximately 19 mm

(3/4 inch) and repoint.

4. Remove mortar droppings and other foreign substances from wall surfaces.

5. During construction, minimize any mortar or grout stains on the wall. Immediately remove any staining or soiling that occurs.

6. For burnished, glazed, or pre-finished concrete masonry units, immediately remove any green mortar smears or soiling with a damp sponge.

B. Final Cleaning:

1. After mortar is thoroughly set and cured, clean exposed masonry surfaces of stains, efflorescence, mortar or grout droppings, and debris

2. First wet surfaces with clean water, then wash down with masonry cleaner solution. Do not use muriatic acid.

3. Brush with stiff fiber brushes while washing, and immediately wash with clean water.

4. Remove traces of detergent, foreign streaks, or stains of any nature.

- - E N D - -

31 32 13 - 1

SECTION 31 32 13

SOIL STABILIZATION SYSTEM

PART 1 - GENERAL

1.1 SUMMARY

A. Work Included: This section includes providing all material, labor, tools and equipment for installation of Cellular Confinement System as shown in the Contract Documents and as specified in this section.

B. The Cellular Confinement System shall be used for slope protection.

1.2 RELATED WORK

A. The applicable provisions of the General Conditions shall govern the work in this Section.

B. Section 328400 – PLANTING IRRIGATION

C. Section 329000 – PLANTING

1.3 REFERENCES

A. American Society of Testing and Materials (ASTM)

1. ASTM D 1505 - Density of Plastics by the Density-Gradient

Technique.

2. ASTM D 1603 – Standard Test for Carbon Black in Olefin Plastics

3. ASTM D 1693 – Environmental Stress-Cracking of Ethylene Plastics.

4. ASTM D 5199 – Measuring Nominal Thickness of Geotextiles and

Geomembranes.

5. ASTM E 41 – Terminology Relating to Conditioning.

1.4 SUBMITTALS

A. Submit manufacturer's shop drawings. Submittals shall include

Manufacturer’s product data, samples and section layout.

B. Design Calculations and Drawings. Provide a complete set of design calculations including a description of the static analysis performed to determine the slope and crest anchorage requirements.

1. The calculations shall be submitted at the time of bid.

2. Minimum overall design factor of safety shall be 1.4.

3. At a minimum; include design conditions, slope stability calculations, calculated factors of safety, friction angles and type of anchorage (anchors, tendons, earth anchors, etc).

4. If required, provide type (crest burial, pipe deadman, concrete deadman, earth anchors, etc.) and calculations for the recommended crest anchorage system.

5. If tendons are required, a submittal shall be included for the load transfer device including third party testing showing pull through testing exceeding 420 pounds.

31 32 13 - 2

6. The stability calculations shall be in Microsoft Excel converted to

Adobe PDF format.

7. Cross section drawings shall be in AutoCAD converted to Adobe PDF format.

C. Manufacturer's Certificate of Analysis: Manufacturer shall supply certificate of analysis containing the following test results for the cellular confinement material used for project: Base Resin Lot

Number(s), Resin Density per ASTM-1505, Production Lot Number(s), Material Thickness, Short Term Seam Peel Strength, and percentage of

Carbon Black. Submit qualifications certifying the installer is experienced in the installation of the specified products.

D. No material will be considered as an equivalent to the geocell material specified herein unless it meets all requirements of this specification, without exception. Manufacturers seeking to supply what they represent as equivalent material must submit records, data, independent test results, samples, certifications, and documentation deemed necessary by the COR to prove equivalency. The COR shall approve or disapprove other

Manufacturers’ materials in accordance with the General Conditions after all information is submitted and reviewed. Any substitute materials submitted shall be subject to independent lab testing at the contractor’s expense.

1.5 QUALITY ASSURANCE AND CONTROL

A. The cellular confinement system material shall be provided from a single

Manufacturer for the entire project.

B. The Manufacturer's Quality Management System shall be certified and in accordance with ISO 9001:2015 and CE certification. Any substitute materials submitted shall provide a certification that their cellular confinement manufacturing process is part of an ISO program and a certification will be required specifically stating that their testing facility is certified and in accordance with ISO. An ISO certification for the substitute material will not be acceptable unless it is proven it pertains specifically to the geocell manufacturing operations.

C. The Manufacturer shall provide certification of compliance to all applicable testing procedures and related specifications upon the customer's written request. Request for certification shall be submitted no later than the date of order placement. The Manufacturer shall have a minimum of 20 years experience producing cellular confinement systems.

D. Pre-Installation Meeting: Prior to installation of any materials, conduct a pre-installation meeting to discuss the scope of work and

31 32 13 - 3 review installation requirements. The pre-installation meeting shall be attended by all parties involved in the installation of the cellular confinement system.

E. Manufacturer's Field Representative Qualifications:

1. Manufacturer shall provide a qualified field representative on site at the start of construction to ensure the system is installed in accordance with the Contract Documents.

2. Manufacturer’s field representative shall have a minimum 5 years installation experience with the specified products in the specified application.

3. Manufacturer of any substitute materials to be used shall certify that a representative can meet the above criteria and will be on site for initial construction start up. Manufacturers other than

Presto will be required to provide proof the representative meets these qualifications.

1.6 DELIVERY, STORAGE, AND HANDLING

A. Deliver materials to site in Manufacturer's original, unopened containers and packaging, with labels clearly identifying product name and Manufacturer.

B. The materials shall be stored in accordance with Manufacturer's instructions. The materials shall be protected from damage and away from direct sunlight.

C. The materials shall be delivered, unloaded and installed in a manner to prevent and minimize damage.

1.7 WARRANTY

A. The Manufacturer shall warrant each section that it ships to be free from defects in materials and workmanship at the time of manufacture.

The Manufacturer’s exclusive liability under this warranty or otherwise will be to furnish without charge to the original f.o.b. point a replacement for any section which proves to be defective under normal use and service during the 10-year period which begins on the date of shipment. The Manufacturer reserves the right to inspect any allegedly defective section in order to verify the defect and ascertain its cause.

B. This warranty shall not cover defects attributable to causes or occurrences beyond the Manufacturer’s control and unrelated to the manufacturing process, including, but not limited to, abuse, misuse, mishandling, neglect, improper storage, improper installation, improper alteration or improper application.

C. In no event shall the Manufacturer be liable for any special, indirect, incidental or consequential damages for the breach of any express or

31 32 13 - 4 implied warranty or for any other reason, including negligence, in connection with the cellular confinement system.

PART 2 - PRODUCTS

2.1 ACCEPTABLE MANUFACTURER

A. Presto Geosystems, PO Box 2399, Appleton, Wisconsin 54912-2399.

Toll Free: (800) 548-3424. Phone: (920) 738-1328. Fax:

(920) 738-1222.

E-Mail: info@prestogeo.com. Website: www.prestogeo.com.

2.2 GEOWEB CELLULAR CONFINEMENT SYSTEM

A. Manufacturing Certification

1. The Manufacturer shall have earned a certificate of registration, which demonstrates that its quality-management system for its

Geoweb cellular confinement system is currently registered to the

ISO 9001:2008 and CE quality standards.

B. Base Materials

1. Polyethylene Stabilized with Carbon Black

a. Density shall be 58.4 to 60.2 pound/ft3 (0.935 to 0.965 g/cm3) in accordance with ASTM D 1505.

b. Environmental Stress Crack Resistance (ESCR) shall be

5000 hours in accordance with ASTM D 1693.

c. Ultra-Violet light stabilization with carbon black.

d. Carbon Black content shall be 1.5 to 2 percent by weight, through addition of a carrier with certified carbon black content.

e. Carbon black shall be homogeneously distributed throughout material.

f. The manufacturer must have an in-place quality control to prevent irregularities in strip material.

C. Cell Properties

1. Individual cells shall be uniform in shape and size when expanded.

2. Individual cell dimensions (nominal) shall be dimensions ± 10%.

3. GW30V-Cell

a. Length shall be 11.3 inches (287 mm).

b. Width shall be 12.6 inches (320 mm).

c. Nominal area shall be 71.3 in2 (460 cm2) plus or minus

1%.

d. Nominal depth shall be 3 inches (75 mm).

D. Strip Properties and Assembly

1. Perforated Textured Strip/Cell mailto:info@prestogeo.com http://www.prestogeo.com/

31 32 13 - 5

a. Strip sheet thickness shall be 50 mil (1.27 mm), minus

5 percent, plus 10 percent in accordance with ASTM D 5199.

Determine thickness flat, before surface disruption.

b. Polyethylene strips shall be textured surface with a multitude of rhomboidal (diamond shape) indentations.

c. Textured sheet thickness shall be 60 mil plus or minus 6 mil

(1.52 mm plus or minus 0.15 mm).

d. Indentation surface density shall be 140 to 200 per in2 (22 to

31 per cm2).

e. Perforated with horizontal rows of 0.4 inch (10 mm) diameter holes.

f. Perforations within each row shall be 0.75 inches (19 mm) on-center.

g. Horizontal rows shall be staggered and separated 0.50 inches

(12 mm) relative to hole centers.

h. Edge of strip to nearest edge of perforation shall be a minimum of 0.3 inches (8 mm).

i. Centerline of spot weld to nearest edge of perforation shall be a minimum of 0.7 inches (18 mm).

j. A slot with a dimension of 3/8 inch x 1-3/8 inch (10 mm x 35

mm) is standard in the center of the non-perforated areas and at the center of each weld.

2. Assembly of Cell Sections

a. Fabricate using strips of sheet polyethylene each with a length of 142 inches (3.61 m) and a width equal to cell depth.

b. Connect strips using full depth ultrasonic spot-welds aligned perpendicular to the longitudinal axis of strip.

c. Ultrasonic weld melt-pool width shall be 1.0 inch (25 mm) maximum.

d. Weld spacing for GW30V-cell sections shall be 17.5 inches plus or minus 0.10 inch (445 mm plus or minus 2.5 mm).

E. Cell Seam Strength Tests

1. Minimum seam strengths are required by design and shall be reported in test results. Materials submitted with average or typical values will not be accepted. Written certification of minimum strengths must be supplied to the COR at the time of submittals.

2. Short-Term Seam Peel-Strength Test

a. Cell seam strength shall be uniform over full depth of cell.

b. Minimum seam peel strength shall be 240 lbf (1060 N) for 3 inch

31 32 13 - 6

(75 mm) depth.

3. Long-Term Seam Peel-Strength Test

a. Conditions: Minimum of 7 days in a temperature-controlled environment that undergoes change on a 1-hour cycle from room temperature to 130 °F (54 °C).

b. Room temperature shall be in accordance with ASTM E41.

c. Test samples shall consist of two, four-inch (100 mm) wide strips welded together.

d. Test sample consisting of two carbon black stabilized strips shall support a 160 pound (72.5 kg) load for test period.

4. 10,000-hour Seam Peel Strength Certification

Presto Geosystems shall provide data showing that the high-density polyethylene resin used to produce the Geoweb sections has been tested using an appropriate number of seam samples and varying loads to generate data indicating that the seam peel strength shall survive a loading of at least 209 lbf (95 kg) for a minimum of

10,000 hours.

2.3 INTEGRAL COMPONENTS

A. ATRA® Stake Clip

1. The ATRA Stake Clip is a molded, high-strength polyethylene device available in standard (0.5 inch) and metric (10–12 mm) versions.

2. ATRA Stake Clips can be installed as an end cap on standard (0.5 inch) and metric (10–12 mm) steel reinforcing rods to form ATRA

Anchors.

B. ATRA® Key

1. ATRA keys shall be constructed of polyethylene and provide a high strength connection with minimum pull-through of 275 lbs (125 kg).

2. ATRA keys shall be used to connect sections together at each interleaf and end to end connection.

2.4 STAKE ANCHORAGE

Specifier Note: Select the desired stake anchorage and delete the others. No stake anchorage may be necessary. Contact Presto Geosystems for assistance.

A. ATRA® Anchors

1. ATRA Anchors shall consist of standard (0.5 inch) or metric (10–12

mm) steel reinforcing rod with an ATRA® Stake Clip attached as an end cap.

2. ATRA anchors shall be assembled by inserting the ATRA Stake Clip onto the reinforcing rod so that the end is flush with the top of the ATRA Stake Clip. Prior to attaching the ATRA Stake Clip, the reinforcing rod shall be beveled and free from all burrs.

31 32 13 - 7

3. The anchor length and placement shall be as shown in the Contract

Documents.

2.5 CELL INFILL MATERIALS

A. Cell infill material shall be a combination of topsoil and gravel as indicated in the Drawings.

B. Topsoil cell infill material for vegetated surfaces and shall have a

Sand:Silt:Clay texture of loam or sandy loam. Topsoil shall be neither excessively acidic nor alkaline. See Section 329000- “Planting” for topsoil requirements.

C. Gravel cell infill material shall be gravel, crushed aggregate or stone with a maximum particle size of one-third cell depth. See Section

329000- “Planting” for gravel specifications.

1. Base course gravel shall be 2-inches depth of compacted depth of 1-inch maximum crushed rock.

2. Surface course gravel shall be 2-inched depth of compacted decorative gold crushed rock.

D. Once placed, the mixture shall be compacted to a 95% Standard Proctor.

E. Infill material shall be free of any foreign material.

F. Clays and silts are not acceptable infill material.

G. Infill material shall be free-flowing and not frozen when placed in the sections.

2.6 ADDITIONAL COMPONENTS

A. Vegetation

1. Vegetation shall be as specified in the Contract Documents.

B. Geotextile

1. The geotextile separation layer shall be as specified in the

Contract Documents.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Verify site conditions are as indicated on the drawings. Notify the COR if site conditions are not acceptable. Do not begin preparation or installation until unacceptable conditions have been corrected.

B. Verify layout of structure is as indicated on the drawings. Notify the

COR if layout of structure is not acceptable. Do not begin preparation or installation until unacceptable conditions have been corrected.

3.2 INSTALLATION OF THE SLOPE PROTECTION SYSTEM

A. Prepare subgrade and install protection system in accordance with

Manufacturer's recommendations.

31 32 13 - 8

B. On-site time for installation assistance by the Manufacturer’s field representative shall be 1 day with one trip. All travel and expense costs for Manufacturer’s field representative installation assistance shall be included in the base bid price.

C. Subgrade Preparation:

1. Excavate or fill foundation soils so top of installed section is flush with or slightly lower than adjacent terrain or final grade as indicated on the drawings or as directed by the COR.

D. Section Anchorage

1. Anchorage requirements for the sections shall be as shown on the

Contract Documents and as directed by the COR.

2. Anchorage with ATRA Anchors

a. Position collapsed sections at the top of the slope against the building wall or service pad as shown in the drawings.

b. If required, excavate the anchor trench at the top of the slope to the depth as shown on the Contract Documents.

c. Drive ATRA anchors at the crest of the slope to secure the sections in place and allow expansion of the sections into position.

d. After the sections are expanded as desired, drive ATRA Anchors so the arm of the ATRA Stake Clip engages with the top of the cell wall.

e. Anchorage pattern and stake length shall be as indicated on the

Contract Documents.

f. Fill the anchorage trench with the specified material and compact as required by the Contract Documents.

E. Section Placement and Connection

1. Verify all sections are expanded uniformly to required dimensions and that outer cells of each section are correctly aligned.

Interleaf or overlap edges of adjacent sections. Ensure upper surfaces of adjoining sections are flush at joint and adjoining cells are fully aligned at the cell wall slot.

2. Connect the sections with ATRA keys at each interleaf and end to end connection. Insert the ATRA key through the cell wall I-slot before inserting through the adjacent cell. Turn the ATRA key 90 degrees to lock the sections together.

F. Aggregate Infill Placement

1. Mark locations on the cells where plants are indicated to be planted as shown on the Planting Plans.

2. Fill sections in all cells with aggregates where planting is not

31 32 13 - 9 indicated.

3. Place specified gravel infill in expanded cells with suitable material handling equipment.

4. Limit drop height to a maximum of 3 feet (1 m) to prevent panel distortion.

5. Infill material shall be free-flowing and not frozen when placed into the sections.

6. Evenly spread base course of aggregate infill and ensure the infill is one-inch below with the cell walls.

7. Place surface course of aggregate infill and ensure the compacted level of infill is one-inch above the cell walls in a uniform slope free of depressions and ridges.

G. Surface Treatment

1. Vegetation shall be as specified in the Contract Documents and installed immediately after the infill is placed and protected with mulch.

2. Cut and remove cells to provide a planting pit diameter equal to 3 times the rootball diameter of the plant.

3. Maintain 3-feet or 3 cells minimum intact from the edge of the geoweb panel to maintain the structural integrity of the material.

4. Excavate plant pits and install plants with specified amended topsoil backfill mix in accordance with Section 329000- “Planting”

5. Install compost mulch around base of plant.

END OF SECTION

32 84 00-1

SECTION 32 84 00

PLANTING IRRIGATION

PART 1 - GENERAL

1.1 DESCRIPTION

A. This section specifies materials and procedures for furnishing and installing modifications to an existing automatically-controlled drip irrigation system, and all other appurtenances necessary to irrigate landscape areas indicated on the drawings.

1.2 RELATED WORK

A. Section 32 90 00, PLANTING

B. Section 31 32 13, SOIL STABILIZATION SYSTEM.

1.3 DEFINITIONS

A. Lateral Line Piping: Downstream from control valves to sprinklers, drip tubing and specialties. Piping is under pressure during flow.

B. Mainline Piping: Downstream from point of connection to water distribution piping to, and including, control valves. Piping is under constant system pressure.

C. Low Voltage: As defined in NFPA 70 for circuits and equipment operating at less than 50 volts or for remote-control, signaling power-limited circuits.

1.4 ABBREVIATIONS

A. FPT: Female pipe thread

B. HDPE: High-density polyethylene plastic

C. NPT: National pipe thread

D. PTFE: Polytetrafluoroethylene

E. PVC: Polyvinyl chloride plastic

F. WOG: Water, oil and gas

1.5 PERFORMANCE REQUIREMENTS

A. Drip irrigation zone modifications when completed shall be under automatic operation of the existing controllers and automatic control valves.

B. Location of sprinklers and specialties on Drawings is approximate.

Contractor to make minor adjustments necessary to avoid obstructions such as utilities. Provide full irrigation of existing landscaped areas indicated.

32 84 00-2

C. Minimum Working Pressures: The following are maximum pressure requirements for piping, valves and specialties unless otherwise indicated.

1. Irrigation Main Piping: 100 psi (640 kPa).

2. Circuit Piping: 80 psi (520 kPa).

1.6 DELIVERY, STORAGE, AND HANDLING

A. Deliver piping with factory-applied end caps. Maintain end caps through shipping, storage, and handling to prevent pipe-end damage and to prevent entrance of dirt, debris, and moisture.

B. Store plastic piping protected from direct sunlight. Support pipe to prevent sagging and bending.

1.7 QUALITY ASSURANCE:

A. Products Criteria:

1.