Attachment__2-Specifications_ALL_LOCATIONS.pdf

MOBILIZATION 011900-1

USDA FOREST SERVICE, R-4

SECTION 011900 - MOBILIZATION

PART 1 - GENERAL

1.1 SUMMARY

A. This item is intended to compensate the Contractor for operations including, but not limited to, those necessary for the movement of personnel, equipment, supplies, and incidentals to the project site; for payment of premiums for bonds and insurance for the project; and for any other work and operations which must be performed or costs that must be incurred incident to the initiation of meaningful work at the site and for which payment is not otherwise provided for under the contract.

1.2 MEASUREMENT AND PAYMENT

A. There will be no separate payment for mobilization on this project. Payment for mobilization shall be considered incidental to other items of work in the schedule of items.

PART 2 - PRODUCTS (NOT USED)

PART 3 - EXECUTION (NOT USED)

END OF SECTION 011900

JULY 2014

Attachment #2-Solicitation No.:AG-0261-S-14-0115

WASTE MATERIAL DISPOSAL 024100-1

SECTION 024100 - WASTE MATERIAL DISPOSAL

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes the loading, handling, hauling, and placing of excess excavation material, unsuitable excavation material, clearing and grubbing debris, and construction and demolition debris.

1.2 MEASUREMENT AND PAYMENT

A. There will be no separate measurement or payment for work in this Section. Waste material disposal is considered incidental to other items of work shown in the Schedule of Items.

PART 2 - PRODUCTS – NOT APPLICABLE

PART 3 - EXECUTION

3.1 WASTE MATERIAL TO BE HAULED TO A LANDFILL

A. All excavated material not used in the construction of embankments or backfilling of trenches, or other excess material resulting from the excavation and embankment operation shall be hauled to the designated borrow and waste disposal site or approved landfill.

B. Organic materials, such as stumps, logs, and slash and all other unsuitable material shall be hauled to an approved landfill.

C. All demolition materials, garbage, and other refuse generated during the course of construction shall be removed from the project site and legally disposed off Government property in an approved landfill.

END OF SECTION 024100

CAST IN PLACE CONCRETE 033000-1

SECTION 033000 - CAST-IN-PLACE CONCRETE

PART 1 - GENERAL

1.1 SUMMARY

A. This Section specifies cast-in place concrete, including formwork, reinforcement, concrete materials, mixture design, placement procedures, and finishes.

1.2 DEFINITIONS

A. Cementitious Materials: Portland cement alone or in combination with one or more of the following: blended hydraulic cement, fly ash and other pozzolans, ground granulated blast-furnace slag, and silica fume; subject to compliance with requirements.

1.3 SUBMITTALS

A. Product Data: For each type of product indicated.

B. Design Mixtures: For each concrete mixture. Indicate amounts of mixing water to be withheld for later addition at Project site.

C. Field quality-control test reports.

D. Concrete Color Samples: for selection by the Contracting Officer.

E. Expansion and contraction joint layout

1.4 MEASUREMENT AND PAYMENT

A. There will be no separate measurement or payment for work in this section. Payment will be included at the contract unit price for items shown on the Schedule of Items.

PART 2 - PRODUCTS

2.1 FORM-FACING MATERIALS

A. Smooth-Formed Finished Concrete: Form-facing panels that will provide continuous, true, and smooth concrete surfaces. Furnish in largest practicable sizes to minimize number of joints.

1. Plywood, metal, or other approved panel materials.

2. Exterior-grade plywood panels, suitable for concrete forms, complying with DOC PS 1, and as follows:

a. Structural 1, B-B or better; mill oiled and edge sealed.

b. B-B (Concrete Form), Class 1 or better; mill oiled and edge sealed.

B. Rough-Formed Finished Concrete: Plywood, lumber, metal, or another approved material.

Provide lumber dressed on at least two edges and one side for tight fit.

C. Forms for Cylindrical Columns, Pedestals, and Supports: Metal, glass-fiber-reinforced plastic, paper, or fiber tubes that will produce surfaces with gradual or abrupt irregularities not

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exceeding specified formwork surface class. Provide units with sufficient wall thickness to resist plastic concrete loads without detrimental deformation.

D. Form-Release Agent: Commercially formulated form-release agent that will not bond with, stain, or adversely affect concrete surfaces and will not impair subsequent treatments of concrete surfaces.

E. Form Ties: Factory-fabricated, removable or snap-off metal or glass-fiber-reinforced plastic form ties designed to resist lateral pressure of fresh concrete on forms and to prevent spalling of concrete on removal.

1. Furnish units that will leave no corrodible metal closer than 1 inch to the plane of exposed concrete surface.

2. Furnish ties with integral water-barrier plates to walls indicated to receive damp-proofing or waterproofing.

2.2 STEEL REINFORCEMENT

A. Reinforcing Bars: ASTM A706, or ASTM A 615/A 615M, Grade 60, deformed.

B. Plain-Steel Wire: ASTM A 82, as drawn.

C. Deformed-Steel Wire: ASTM A 496.

2.3 REINFORCEMENT ACCESSORIES

A. Joint Dowel Bars: ASTM A706, or ASTM A 615/A 615M, Grade 60, plain-steel bars, cut bars true to length with ends square and free of burrs.

B. Bar Supports: Bolsters, chairs, spacers, and other devices for spacing, supporting, and fastening reinforcing bars and welded wire reinforcement in place. Manufacture bar supports from steel wire, plastic, or precast concrete according to CRSI's "Manual of Standard Practice," of greater compressive strength than concrete and as follows:

1. For concrete surfaces exposed to view where legs of wire bar supports contact forms, use CRSI Class 1 plastic-protected steel wire or CRSI Class 2 stainless-steel bar supports.

2.4 CONCRETE MATERIALS

A. Cementitious Material: Use the following cementitious materials, of the same type, brand, and source, throughout Project:

1. Portland Cement: ASTM C 150, Type II.

B. Normal-Weight Aggregates: ASTM C 33, graded, from a single source.

1. Maximum Coarse-Aggregate Size: 1 inch nominal.

2. Fine Aggregate: Free of materials with deleterious reactivity to alkali in cement.

C. Water: ASTM C 94/C 94M and potable.

D. Fly ash, ground iron blast-furnace slag, or silica fume may partially replace cement in any mix as follows:

1. Fly Ash:

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a. Class F – Not more than 20 percent of the minimum mass of portland cement may be replaced with class F fly ash.

b. Class C – Not more than 25 percent of the minimum mass of portland cement may be replaced with class C fly ash.

2. Ground Iron Blast-Furnace Slag: Not more than 25 percent of the minimum mass of portland cement may be replaced with ground iron blast-furnace slag.

3. Silica Fume (microsilica): Not more than 10 percent of the minimum mass of portland cement may be replaced with silica fume.

4. Additionally, fly ash, slag, and silica fume will constitute no more than 50 percent of the total replacement weight.

2.5 ADMIXTURES

A. Air-Entraining Admixture: ASTM C 260.

B. Chemical Admixtures: Provide admixtures certified by manufacturer to be compatible with other admixtures and that will not contribute water-soluble chloride ions exceeding those permitted in hardened concrete. Do not use calcium chloride or admixtures containing calcium chloride.

1. Retarding Admixture: ASTM C 494/C 494M, Type B. Discharge times for concrete mixes having this admixture shall not exceed the manufacturer’s recommendations.

C. Color Pigment: ASTM C 979, synthetic mineral-oxide pigments or colored water-reducing admixtures; color stable, nonfading, and resistant to lime and other alkalis.

1. Color: As selected by Contracting Officer from manufacturer's full range.

D. Synthetic Fiber: Monofilament or fibrillated polypropylene fibers engineered and designed for use in concrete pavement, complying with ASTM C 1116, Type III, 1/2 to 1-1/2 inches long.

2.6 CURING MATERIALS

A. Absorptive Cover: AASHTO M 182, Class 2, burlap cloth made from jute or kenaf, weighing approximately 9 oz./sq. yd. when dry.

B. Moisture-Retaining Cover: ASTM C 171, polyethylene film or white burlap-polyethylene sheet.

C. Water: Potable.

D. Clear, Waterborne, Membrane-Forming Curing Compound: ASTM C 309, Type 1, Class B, dissipating or non-dissipating. Liquid Membrane-Forming Compounds. Material shall be certified by curing compound manufacturer to not interfere with bonding of floor covering.

2.7 RELATED MATERIALS

A. Expansion- and Isolation-Joint-Filler Strips: ASTM D 1751, asphalt-saturated cellulosic fiber or ASTM D 1752, cork or self-expanding cork.

B. Semi-rigid Joint Filler: Two-component, semi-rigid, 100 percent solids, epoxy resin with a Type A shore durometer hardness of 80 per ASTM D 2240.

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C. Bonding Agent: ASTM C 1059, Type II, non-redispersible, acrylic emulsion or styrene butadiene.

D. Epoxy Bonding Adhesive: ASTM C 881, two-component epoxy resin, capable of humid curing and bonding to damp surfaces, of class suitable for application temperature and of grade to suit requirements, and as follows:

1. Types IV and V, load bearing, for bonding hardened or freshly mixed concrete to hardened concrete.

2.8 REPAIR MATERIALS

A. Repair Underlayment: Cement-based, polymer-modified, self-leveling product that can be applied in thicknesses from 1/8 inch and that can be feathered at edges to match adjacent floor elevations.

1. Cement Binder: ASTM C 150, portland cement or hydraulic or blended hydraulic cement as defined in ASTM C 219.

2. Primer: Product of underlayment manufacturer recommended for substrate, conditions, and application.

3. Aggregate: Well-graded, washed gravel, 1/8 to 1/4 inch or coarse sand as recommended by underlayment manufacturer.

4. Compressive Strength: Not less than 4100 psi at 28 days when tested according to

ASTM C 109/C 109M.

B. Repair Overlayment: Cement-based, polymer-modified, self-leveling product that can be applied in thicknesses from 1/8 inch and that can be feathered at edges to match adjacent floor elevations.

1. Cement Binder: ASTM C 150, portland cement or hydraulic or blended hydraulic cement as defined in ASTM C 219.

2. Primer: Product of topping manufacturer recommended for substrate, conditions, and application.

3. Aggregate: Well-graded, washed gravel, 1/8 to 1/4 inch or coarse sand as recommended by topping manufacturer.

4. Compressive Strength: Not less than 5000 psi at 28 days when tested according to

ASTM C 109/C 109M.

2.9 CONCRETE MIXTURES, GENERAL

A. Prepare design mixtures for each type and strength of concrete, proportioned on the basis of laboratory trial mixture or field test data, or both, according to ACI 301.

1. Use a qualified independent testing agency for preparing and reporting proposed mixture designs based on laboratory trial mixtures.

B. Limit water-soluble, chloride-ion content in hardened concrete to 0.06 percent by weight of cement.

C. Admixtures: Use admixtures according to manufacturer's written instructions.

D. Color Pigment: Add color pigment to concrete mixture according to manufacturer's written instructions and to result in hardened concrete color consistent with approved mockup.

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2.10 CONCRETE MIXTURES FOR BUILDING ELEMENTS

A. Proportion normal-weight concrete mixture as follows:

1. Minimum Compressive Strength: 3500 psi at 28 days.

2. Minimum Cementitious Material Content: 540 lb /cy.

3. Slump Limit: 2 to 4 inches.

4. Air Content: 4 to 7 percent.

5. Synthetic Fiber: Uniformly disperse in concrete mixture at manufacturer's recommended rate, but not less than 1.5 lb/cu. yd.

2.11 FABRICATING REINFORCEMENT

A. Fabricate steel reinforcement according to CRSI's "Manual of Standard Practice."

2.12 CONCRETE MIXING

A. Ready-Mixed Concrete: Measure, batch, mix, and deliver concrete according to ASTM C 94/C 94M and ASTM C 1116, and furnish batch ticket information.

1. When air temperature is between 85 and 90 deg F (30 and 32 deg C), reduce mixing and delivery time from 1-1/2 hours to 75 minutes; when air temperature is above 90 deg F (32 deg C), reduce mixing and delivery time to 60 minutes.

B. Project-Site Mixing: Measure, batch, and mix concrete materials and concrete according to ASTM C 94/C 94M. Mix concrete materials in appropriate drum-type batch machine mixer.

1. For mixer capacity of 1 cu. yd. (0.76 cu. m) or smaller, continue mixing at least 1-1/2 minutes, but not more than 5 minutes after ingredients are in mixer, before any part of batch is released.

2. For mixer capacity larger than 1 cu. yd. (0.76 cu. m), increase mixing time by 15 seconds for each additional 1 cu. yd. (0.76 cu. m).

3. Provide batch ticket for each batch discharged and used in the Work, indicating Project identification name and number, date, mixture type, mixture time, quantity, and amount of water added. Record approximate location of final deposit in structure.

PART 3 - EXECUTION

3.1 FORMWORK

A. Design, erect, shore, brace, and maintain formwork, according to ACI 301, to support vertical, lateral, static, and dynamic loads, and construction loads that might be applied, until structure can support such loads.

B. Construct formwork so concrete members and structures are of size, shape, alignment, elevation, and position indicated, within tolerance limits of ACI 117.

C. Limit concrete surface irregularities, designated by ACI 347R as abrupt or gradual, as follows:

1. Class A, 1/8 inch (3.2 mm) for smooth-formed finished surfaces.

2. Class B, 1/4 inch (6 mm) for rough-formed finished surfaces.

D. Construct forms tight enough to prevent loss of concrete mortar.

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E. Fabricate forms for easy removal without hammering or prying against concrete surfaces.

Provide crush or wrecking plates where stripping may damage cast concrete surfaces. Provide top forms for inclined surfaces steeper than 1.5 horizontal to 1 vertical.

1. Install keyways, reglets, recesses, and the like, for easy removal.

2. Do not use rust-stained steel form-facing material.

F. Set edge forms, bulkheads, and intermediate screed strips for slabs to achieve required elevations and slopes in finished concrete surfaces. Provide and secure units to support screed strips; use strike-off templates or compacting-type screeds.

G. Provide temporary openings for cleanouts and inspection ports where interior area of formwork is inaccessible. Close openings with panels tightly fitted to forms and securely braced to prevent loss of concrete mortar. Locate temporary openings in forms at inconspicuous locations.

H. Chamfer or round exterior corners and edges of permanently exposed concrete.

I. Form openings, chases, offsets, sinkages, keyways, reglets, blocking, screeds, and bulkheads required in the Work. Determine sizes and locations from trades providing such items.

J. Clean forms and adjacent surfaces to receive concrete. Remove chips, wood, sawdust, dirt, and other debris just before placing concrete.

K. Retighten forms and bracing before placing concrete, as required, to prevent mortar leaks and maintain proper alignment.

L. Coat contact surfaces of forms with form-release agent, according to manufacturer's written instructions, before placing reinforcement.

3.2 EMBEDDED ITEMS

A. Place and secure anchorage devices and other embedded items required for adjoining work that is attached to or supported by cast-in-place concrete. Use setting drawings, templates, diagrams, instructions, and directions furnished with items to be embedded.

1. Install anchor rods, accurately located, to elevations required and complying with tolerances in Section 7.5 of AISC's "Code of Standard Practice for Steel Buildings and Bridges."

3.3 REMOVING AND REUSING FORMS

A. General: Formwork for sides of beams, walls, columns, and similar parts of the work that does not support weight of concrete may be removed after cumulatively curing at not less than 50 deg F (10 deg C) for 48 hours after placing concrete, if concrete is hard enough to not be damaged by form-removal operations and curing and protection operations are maintained.

1. Leave formwork for beam soffits, joists, slabs, and other structural elements that supports weight of concrete in place until concrete has achieved at least 70 percent of its 28-day design compressive strength.

2. Remove forms only if shores have been arranged to permit removal of forms without loosening or disturbing shores.

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B. Clean and repair surfaces of forms to be reused in the Work. Split, frayed, delaminated, or otherwise damaged form-facing material will not be acceptable for exposed surfaces. Apply new form-release agent.

C. When forms are reused, clean surfaces, remove fins and laitance, and tighten to close joints.

Align and secure joints to avoid offsets. Do not use patched forms for exposed concrete surfaces unless approved by Contracting Officer.

3.4 STEEL REINFORCEMENT

A. General: Comply with CRSI's "Manual of Standard Practice" for placing reinforcement.

1. Do not cut or puncture vapor retarder. Repair damage and reseal vapor retarder before placing concrete.

B. Clean reinforcement of loose rust and mill scale, earth, ice, and other foreign materials that would reduce bond to concrete.

C. Accurately position, support, and secure reinforcement against displacement. Locate and support reinforcement with bar supports to maintain minimum concrete cover. Do not tack weld crossing reinforcing bars.

D. Set wire ties with ends directed into concrete, not toward exposed concrete surfaces.

E. When installation is complete, arrange an inspection of the work with the Forest Service before any concrete is placed.

3.5 CONCRETE PLACEMENT

A. Before placing concrete, verify that installation of formwork, reinforcement, and embedded items is complete and that required inspections have been performed.

B. Do not add water to concrete during delivery, at Project site, or during placement unless approved by the Contracting Officer.

C. Deposit concrete continuously in one layer or in horizontal layers of such thickness that no new concrete will be placed on concrete that has hardened enough to cause seams or planes of weakness. If a section cannot be placed continuously, provide construction joints as indicated.

Deposit concrete to avoid segregation.

1. Deposit concrete in horizontal layers of depth to not exceed formwork design pressures and in a manner to avoid inclined construction joints.

2. Consolidate placed concrete with mechanical vibrating equipment according to ACI 301.

3. Do not use vibrators to transport concrete inside forms. Insert and withdraw vibrators vertically at uniformly spaced locations to rapidly penetrate placed layer and at least 6 inches (150 mm) into preceding layer. Do not insert vibrators into lower layers of concrete that have begun to lose plasticity. At each insertion, limit duration of vibration to time necessary to consolidate concrete and complete embedment of reinforcement and other embedded items without causing mixture constituents to segregate.

D. Deposit and consolidate concrete for floors and slabs in a continuous operation, within limits of construction joints, until placement of a panel or section is complete.

1. Consolidate concrete during placement operations so concrete is thoroughly worked around reinforcement and other embedded items and into corners.

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2. Maintain reinforcement in position on chairs during concrete placement.

3. Screed slab surfaces with a straightedge and strike off to correct elevations.

4. Slope surfaces uniformly to drains where required.

5. Begin initial floating using bull floats or darbies to form a uniform and open-textured surface plane, before excess bleedwater appears on the surface. Do not further disturb slab surfaces before starting finishing operations.

E. Cold-Weather Placement: Comply with ACI 306.1 and as follows. Protect concrete work from physical damage or reduced strength that could be caused by frost, freezing actions, or low temperatures.

1. When average high and low temperature is expected to fall below 40 deg F (4.4 deg C) for three successive days, maintain delivered concrete mixture temperature within the temperature range required by ACI 301.

2. Do not use frozen materials or materials containing ice or snow. Do not place concrete on frozen subgrade or on subgrade containing frozen materials.

3. Do not use calcium chloride, salt, or other materials containing antifreeze agents or chemical accelerators unless otherwise specified and approved in mixture designs.

F. Hot-Weather Placement: Comply with ACI 301 and as follows:

1. Maintain concrete temperature below 90 deg F (32 deg C) at time of placement. Chilled mixing water or chopped ice may be used to control temperature, provided water equivalent of ice is calculated to total amount of mixing water. Using liquid nitrogen to cool concrete is Contractor's option.

2. Fog-spray forms, steel reinforcement, and subgrade just before placing concrete. Keep subgrade uniformly moist without standing water, soft spots, or dry areas.

3.6 FINISHING FORMED SURFACES

A. As-cast concrete texture imparted by form-facing material, arranged in an orderly and symmetrical manner with a minimum of seams. Repair and patch tie holes and defects.

Remove fins and other projections that exceed specified limits on formed-surface irregularities.

B. Rubbed Finish: Apply the following to smooth-formed finished as-cast concrete where indicated:

1. Grout-Cleaned Finish: Wet concrete surfaces and apply grout of a consistency of thick paint to coat surfaces and fill small holes. Mix one part portland cement to one and one-half parts fine sand with a 1:1 mixture of bonding admixture and water. Add white portland cement in amounts determined by trial patches so color of dry grout will match adjacent surfaces. Scrub grout into voids and remove excess grout. When grout whitens, rub surface with clean burlap and keep surface damp by fog spray for at least 36 hours.

C. Related Unformed Surfaces: At tops of walls, horizontal offsets, and similar unformed surfaces adjacent to formed surfaces, strike off smooth and finish with a texture matching adjacent formed surfaces. Continue final surface treatment of formed surfaces uniformly across adjacent unformed surfaces, unless otherwise indicated.

3.7 FINISHING FLOORS AND SLABS

A. General: Comply with ACI 302.1R recommendations for screeding, re-straightening, and finishing operations for concrete surfaces. Do not wet concrete surfaces.

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B. Float Finish: Consolidate surface with power-driven floats or by hand floating if area is small or inaccessible to power driven floats. Re-straighten, cut down high spots, and fill low spots.

Repeat float passes and re-straightening until surface is left with a uniform, smooth, granular texture.

1. Apply float finish to surfaces to receive trowel finish and to be covered with fluid-applied or sheet waterproofing.

C. Trowel Finish: After applying float finish, apply first troweling and consolidate concrete by hand or power-driven trowel. Continue troweling passes and re-straighten until surface is free of trowel marks and uniform in texture and appearance. Grind smooth any surface defects that would telegraph through applied coatings or floor coverings.

1. Apply a trowel finish to surfaces to be covered with resilient flooring, carpet, ceramic or quarry tile set over a cleavage membrane.

2. Finish and measure surface so gap at any point between concrete surface and an unleveled, freestanding, 10-foot- (3.05-m-) long straightedge resting on 2 high spots and placed anywhere on the surface does not exceed 1/8 inch (3.2 mm).

3. Comply with flatness and levelness tolerances for trowel finished floor surfaces.

D. Broom Finish: Apply a heavy-broom finish to the concrete surface.

1. Immediately after float finishing, slightly roughen trafficked surface by brooming with fiber-bristle broom perpendicular to main traffic route. Coordinate required final finish with Contracting Officer before application.

3.8 MISCELLANEOUS CONCRETE ITEMS

A. Filling In: Fill in holes and openings left in concrete structures, unless otherwise indicated, after work of other trades is in place. Mix, place, and cure concrete, as specified, to blend with in-place construction. Provide other miscellaneous concrete filling indicated or required to complete the Work.

3.9 JOINTS

A. General: Provide expansion joints every 50 feet, and contraction joints every 10 feet.

3.10 CONCRETE PROTECTING AND CURING

A. General: Protect freshly placed concrete from premature drying and excessive cold or hot temperatures. Comply with ACI 306.1 for cold-weather protection and ACI 301 for hot-weather protection during curing.

B. Evaporation Retarder: Apply evaporation retarder to unformed concrete surfaces if hot, dry, or windy conditions cause moisture loss approaching 0.2 lb/sq. ft. x h (1 kg/sq. m x h) before and during finishing operations. Apply according to manufacturer's written instructions after placing, screeding, and bull floating or darbying concrete, but before float finishing.

C. Formed Surfaces: Cure formed concrete surfaces, including underside of beams, supported slabs, and other similar surfaces. If forms remain during curing period, moist cure after loosening forms. If removing forms before end of curing period, continue curing for the remainder of the curing period.

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D. Unformed Surfaces: Begin curing immediately after finishing concrete. Cure unformed surfaces, including floors and slabs, concrete floor toppings, and other surfaces.

E. Cure concrete according to ACI 308.1, by one or a combination of the following methods:

1. Moisture Curing: Keep surfaces continuously moist for not less than seven days with the following materials:

a. Water.

b. Continuous water-fog spray.

c. Absorptive cover, water saturated, and kept continuously wet. Cover concrete surfaces and edges with 12-inch (300-mm) lap over adjacent absorptive covers.

2. Moisture-Retaining-Cover Curing: Cover concrete surfaces with moisture-retaining cover for curing concrete, placed in widest practicable width, with sides and ends lapped at least 12 inches (300 mm), and sealed by waterproof tape or adhesive. Cure for not less than seven days. Immediately repair any holes or tears during curing period using cover material and waterproof tape.

a. Moisture cure or use moisture-retaining covers to cure concrete surfaces to receive floor coverings.

b. Moisture cure or use moisture-retaining covers to cure concrete surfaces to receive penetrating liquid floor treatments.

c. Cure concrete surfaces to receive floor coverings with either a moisture-retaining cover or a curing compound that the manufacturer certifies will not interfere with bonding of floor covering used on Project.

3. Curing Compound: Apply uniformly in continuous operation by power spray or roller according to manufacturer's written instructions. Recoat areas subjected to heavy rainfall within three hours after initial application. Maintain continuity of coating and repair damage during curing period.

a. After curing period has elapsed, remove curing compound without damaging concrete surfaces by method recommended by curing compound manufacturer unless manufacturer certifies curing compound will not interfere with bonding of floor covering used on Project.

3.11 CONCRETE SURFACE REPAIRS

A. Defective Concrete: Repair and patch defective areas when approved by Contracting Officer.

Remove and replace concrete that cannot be repaired and patched to Contracting Officer's approval.

B. Patching Mortar: Mix dry-pack patching mortar, consisting of one part portland cement to two and one-half parts fine aggregate passing a No. 16 (1.18-mm) sieve, using only enough water for handling and placing.

C. Repairing Formed Surfaces: Surface defects include color and texture irregularities, cracks, spalls, air bubbles, honeycombs, rock pockets, fins and other projections on the surface, and stains and other discolorations that cannot be removed by cleaning.

1. Immediately after form removal, cut out honeycombs, rock pockets, and voids more than 1/2 inch (13 mm) in any dimension in solid concrete, but not less than 1 inch (25 mm) in depth. Make edges of cuts perpendicular to concrete surface. Clean, dampen with water, and brush-coat holes and voids with bonding agent. Fill and compact with patching

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mortar before bonding agent has dried. Fill form-tie voids with patching mortar or cone plugs secured in place with bonding agent.

2. Repair defects on surfaces exposed to view by blending white portland cement and standard portland cement so that, when dry, patching mortar will match surrounding color. Patch a test area at inconspicuous locations to verify mixture and color match before proceeding with patching. Compact mortar in place and strike off slightly higher than surrounding surface.

3. Repair defects on concealed formed surfaces that affect concrete's durability and structural performance as determined by Contracting Officer.

D. Repairing Unformed Surfaces: Test unformed surfaces, such as floors and slabs, for finish and verify surface tolerances specified for each surface. Correct low and high areas. Test surfaces sloped to drain for trueness of slope and smoothness; use a sloped template.

1. Repair finished surfaces containing defects. Surface defects include spalls, popouts, honeycombs, rock pockets, crazing and cracks in excess of 0.01 inch (0.25 mm) wide or that penetrate to reinforcement or completely through unreinforced sections regardless of width, and other objectionable conditions.

2. After concrete has cured at least 14 days, correct high areas by grinding.

3. Correct localized low areas during or immediately after completing surface finishing operations by cutting out low areas and replacing with patching mortar. Finish repaired areas to blend into adjacent concrete.

4. Correct other low areas scheduled to receive floor coverings with a repair underlayment.

Prepare, mix, and apply repair underlayment and primer according to manufacturer's written instructions to produce a smooth, uniform, plane, and level surface. Feather edges to match adjacent floor elevations.

5. Correct other low areas scheduled to remain exposed with a repair topping. Cut out low areas to ensure a minimum repair topping depth of 1/4 inch (6 mm) to match adjacent floor elevations. Prepare, mix, and apply repair topping and primer according to manufacturer's written instructions to produce a smooth, uniform, plane, and level surface.

6. Repair defective areas, except random cracks and single holes 1 inch (25 mm) or less in diameter, by cutting out and replacing with fresh concrete. Remove defective areas with clean, square cuts and expose steel reinforcement with at least a 3/4-inch (19-mm) clearance all around. Dampen concrete surfaces in contact with patching concrete and apply bonding agent. Mix patching concrete of same materials and mixture as original concrete except without coarse aggregate. Place, compact, and finish to blend with adjacent finished concrete. Cure in same manner as adjacent concrete.

7. Repair random cracks and single holes 1 inch (25 mm) or less in diameter with patching mortar. Groove top of cracks and cut out holes to sound concrete and clean off dust, dirt, and loose particles. Dampen cleaned concrete surfaces and apply bonding agent. Place patching mortar before bonding agent has dried. Compact patching mortar and finish to match adjacent concrete. Keep patched area continuously moist for at least 72 hours.

E. Perform structural repairs of concrete, subject to Contracting Officer's approval, using epoxy adhesive and patching mortar.

F. Repair materials and installation not specified above may be used, subject to Contracting Officer's approval.

3.12 FIELD QUALITY CONTROL

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A. Testing and Inspecting: Contractor will engage a qualified independent testing and inspecting agency to perform field tests and inspections and prepare test reports.

B. Concrete Tests: Testing of composite samples of fresh concrete obtained according to ASTM C 172 shall be performed according to the following requirements:

1. Slump: ASTM C 143/C 143M; perform one (1) test for each truck of concrete. Test at point of placement for each composite sample. Perform additional tests when concrete consistency appears to change or water is added.

2. Air Content: ASTM C 231, pressure method, for normal-weight concrete; perform one

(1) test for each truck of concrete.

3. Concrete Temperature: ASTM C 1064/C 1064M; one test for each truck of concrete.

4. Compression Test Specimens: ASTM C 31/C 31M. Cast and laboratory cure one set of three standard cylinder specimens for each composite sample. Obtain one (1) set of cylinders per 30 CY of concrete, or minimum of two (2) sets of cylinders, per day of concrete placement.

a. Compressive-Strength Tests: ASTM C 39/C 39M; test one of three laboratory-cured specimens at 7 days and one specimen at 28 days. If either previous tests fail, test third specimen at 28 days.

b. Strength of each batch delivered will be satisfactory, if the 28-day compressive-strength tests equals, or exceeds specified compressive strength.

5. If either air entrainment or slump field test falls, Contractor shall test next three loads for compliance. If these tests pass, Contractor may resume testing frequency shown in Part B, 1 to 4.

C. Test results shall be reported in writing to Contracting Officer and Contractor within 48 hours of testing. Reports shall contain project identification name and number, date of concrete placement, name of concrete testing and inspecting agency, location of concrete batch in work, design compressive strength at 28 days, concrete mixture proportions and materials, compressive breaking strength, and type of break for both 7- and 28-day tests.

D. Additional testing and inspecting, at Contractor's expense, will be performed to determine compliance of replaced or additional work with specified requirements.

E. Correct deficiencies in the work that test reports and inspections indicate does not comply with the Contract Documents.

END OF SECTION 033000

COLORED REINFORCED INSTALLATIONS

AT CATHEDRAL ROCK 033540-1

USDA FOREST SERVICE, R-4

SECTION 033540 - COLORED CONCRETE INSTALLATIONS AT CATHEDRAL ROCK

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes the following:

1. This work shall consist of constructing concrete picnic pads, sidewalks, hydrants, trailside bench pads, and other site amenities as shown on the drawings. Concrete shall be colored and include synthetic fibers.

2. This section pertains to work at Cathedral Rock; other sections in this contract reference specific parts from this section.

B. Related Sections include the following:

1. Section 033000 "Cast-In-Place Concrete" for concrete and reinforcing.

1.2 SUBMITTALS

A. Color Samples: Submit concrete colors samples to the Contracting Officer for approval. Color shall be “sandstone brown”, or approved equal.

1.3 MEASUREMENT AND PAYMENT

A. Colored Concrete Sidewalks – The quantity to be measured shall be LINEAR FEET (LF) of concrete sidewalks to be constructed, and accepted as listed in the Schedule of Items. Payment shall include the cost to prepare the subgrade, place and compact aggregate base, provide color and synthetic fibers in the concrete mix, and other incidental construction not indicated in the specifications, but shown on the drawings.

B. Colored Concrete Picnic Pads – The quantity to be measured shall be the number (EACH) of colored concrete picnic pads to be constructed, and accepted as listed in the Schedule of Items.

Payment shall include the cost to prepare the subgrade, place and compact aggregate base, provide reinforcing steel according to the drawings, provide color and synthetic fibers in the concrete mix, and other incidental construction not indicated in the specifications, but shown on the drawings.

C. Colored Concrete Hydrant Pads - The quantity to be measured shall be the number (EACH) of colored concrete picnic pads to be constructed, and accepted as listed in the Schedule of Items.

Payment shall include the cost to prepare the subgrade, place and compact aggregate base, provide reinforcing steel according to the drawings, provide color and synthetic fibers in the concrete mix, and other incidental construction not indicated in the specifications, but shown on the drawings.

D. Colored Concrete Trailside Bench - The quantity to be measured shall be the number (EACH) of colored concrete picnic pads to be constructed, and accepted as listed in the Schedule of Items. Payment shall include the cost to prepare the subgrade, placement of gravel sump and redwood grate, place and compact aggregate base, provide reinforcing steel according to the drawings, provide color and synthetic fibers in the concrete mix, and other incidental construction not indicated in the specifications, but shown on the drawings.

AT CATHEDRAL ROCK 033540-2

E. Colored Concrete Valley Gutter - The quantity to be measured shall be LINEAR FEET (LF) of concrete sidewalks to be constructed, and accepted as listed in the Schedule of Items. Payment shall include the cost to prepare the subgrade, place and compact aggregate base, provide color and synthetic fibers in the concrete mix, and other incidental construction not indicated in the specifications, but shown on the drawings.

PART 2 - PRODUCTS

2.1 COLORED CONCRETE

A. Concrete shall be in accordance with Specifications Section 033000 “Cast-In-Place Concrete.”

Concrete shall include Synthetic Fibers and integrally colored “sandstone brown”, or an approved equal.

2.2 AGGREGATE BASE

A. Use Aggregate Base conforming to NDOT Section 704, Type II gradation.

2.3 JOINTS

A. Control joints shall be installed at maximum 10’ on centers, and expansion joint (1/2" felt) shall be installed at maximum 50' on centers.

2.4 REINFORCING STEEL

A. Reinforcing steel shall be No. 3 deformed billet steel bars in accordance with ASTM Specifications ASTM A706, or ASTM A615 Grade 60.

PART 3 - EXECUTION

3.1 GENERAL

A. Any vegetation within the area where the concrete is to be constructed shall be removed by the contractor and disposed at a commercial landfill. Small vegetation may be scattered onsite, if approved by the Contracting Officer.

B. The subgrade shall be graded and shaped by the Forest Service; the Contractor shall re-grade and re-compact any areas that are disturbed.

1. Compact subgrade a minimum of three (3) complete passes or until visual displacement has ceased using an approved roller; or a minimum of six (6) complete passes or until visual displacement has ceased using an approved walk-behind plate compactor.

2. Subgrade shall be approved by the Forest Service prior to installation of aggregate base.

C. The aggregate base course shall be constructed and compacted to the thickness shown in the drawings and in accordance to the following:

1. Aggregate base material shall be watered to its optimal moisture content prior to compaction. Over-watered sections of subgrade (those having water “pump” to the surface during compaction) shall be removed, and fresh material shall be imported to repair the subgrade; place and compact as shown above.

AT CATHEDRAL ROCK 033540-3

2. Aggregate base shall be approved by the Forest Service prior to the installation of concrete forms and/or placement of concrete.

3. Do not place aggregate base over surface of grouted riprap aprons.

3.2 CONCRETE

A. Placement, Finishing, Curing, and Protection shall be in accordance with Section 033000.

B. Assemble reinforcing steel where shown on the drawings.

C. Install concrete forms for pathways over riprap aprons after surface of the grouted apron is approved by the Forest Service.

3.3 JOINTS

A. The concrete shall be divided into sections by control joints formed by a jointing tool. The control joints shall extend into the concrete at least 1/5 to 1/4 of the depth. Joints shall match as nearly as possible adjacent joints in curb or pavements. Spacing of expansion joints with 1/2 inch thick pre-molded joint filler extending the full depth of the sidewalk shall not exceed 50 feet unless otherwise shown on the drawings.

B. Construction joints shall be formed around all appurtenances, such as manholes, utility poles, etc., which extend into and through the sidewalks. Pre-molded expansion joint filler 1/2 inch thick shall be installed in these joints. This expansion joint material shall extend to the full depth of the concrete.

C. Joint pattern for the concrete picnic pads, trailside bench pads, and hydrants at Cathedral Rock shall match the approved joint pattern (refer to completed work on site, and emulate this pattern for these features of work only).

3.4 GRADING AND CLEANUP

A. Place and compact material for shoulders along the edges of completed concrete work as shown on the drawings. Refer to Part 3.1A for compact requirements for this material.

B. Remove all construction garbage and debris off the project site, and dispose at a commercial landfill. Refer to Section 024100 for details.

END OF SECTION 033540

COLORED CONCRETE INSTALLATIONS

AT MAHOGANY GROVE 033545-1

USDA FOREST SERVICE, R-4

SECTION 033545 – COLORED CONCRETE INSTALLATIONS AT MAHOGANY GROVE

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes the following:

1. This work shall consist of constructing colored concrete sidewalks in accordance with the requirements of this specification and to the lines and dimensions as shown on the drawings and as staked in the field (at Mahogany Grove only).

B. Related Sections include the following:

1. Section 033000 "Cast-In-Place Concrete" for concrete and reinforcing.

1.2 SUBMITTALS

A. Colored concrete shall match existing colored concrete sidewalks and flatwork on site.

B. Submit concrete colors samples to the CO for approval.

1.3 MEASUREMENT AND PAYMENT

A. The quantity to be measured shall be the number of lineal feet (LF) of 4-feet wide colored concrete sidewalk path completed in-place and accepted. Payment shall include the aggregate base under the concrete paths, and subgrade preparation.

B. The quantity to be measured shall be the number of 9-foot by 8-foot concrete interpretive pads (EA) with thickened and reinforced interpretive post footers completed in-place and accepted. Payment shall include the aggregate base under the concrete pads and subgrade preparation.

C. Payment will be for relocating one (1) trash receptacle pad. Payment includes removing and salvaging trash receptacle, demolishing and disposing concrete pad, compacting subgrade and aggregate base, forming and placing concrete slab, and re-installing trash receptacle onto new concrete pad, as shown on the drawings.

PART 2 - PRODUCTS

2.1 COLORED CONCRETE

A. Concrete shall be integrally colored brown, beige or tan to match existing colored concrete as approved by the contracting officer.

2.2 AGGREGATE BASE

A. Use Aggregate Base conforming to NDOT Section 704, Type II gradation.

COLORED CONCRETE INSTALLATIONS

AT MAHOGANY GROVE 033545-2

PART 3- EXECUTION

3.1 COMPACTION

A. Compact subgrade a minimum of three (3) complete passes or until visual displacement has ceased using an approved roller; or a minimum of six (6) complete passes or until visual displacement has ceased using an approved walk-behind plate compactor.

B. Aggregate base material shall be placed to the thickness shown on the drawings.

Material shall be watered to its optimal moisture content prior to compaction. Over-watered sections of subgrade (those having water “pump” to the surface during compaction) shall be removed, and fresh material shall be imported to repair the subgrade; place and compact as shown above.

1. Compact minimum of three (3) complete passes or until visual displacement has ceased using an approved roller; or a minimum of six (6) complete passes or until visual displacement has ceased using an approved walk-behind plate compactor.

3.2 CONCRETE

A. Placement, Finishing, Curing, and Protection shall be in accordance with Section 033000.

3.3 JOINTS

A. The sidewalk shall be divided into sections by control joints formed by a jointing tool.

The control joints shall extend into the concrete at least 1/5 to 1/4 of the depth. Joints shall match as nearly as possible adjacent joints in curb or pavements. Spacing of expansion joints with 1/2 inch thick pre-molded joint filler extending the full depth of the sidewalk shall not exceed 20 feet unless otherwise shown on the drawings.

B. Construction joints shall be formed around all appurtenances, such as manholes, utility poles, etc., which extend into and through the sidewalks. Pre-molded expansion joint filler 1/2 inch thick shall be installed in these joints. Expansion joint filler shall be installed between concrete sidewalks and any fixed structure such as a building or bridge. This expansion joint material shall extend to the full depth of the walk.

3.4 FINAL GRADING

A. Place and compact native material, or Type II aggregate base for one foot wide shoulder around the completed pads. Refer to Part 3.1 A for details.

END OF SECTION 033545

August 2014

COLORED CONCRETE CURB & GUTTER

AT FOXTAIL 033550-1

USDA FOREST SERVICE, R-4

SECTION 033550 – COLORED CONCRETE CURB & GUTTER AT FOXTAIL

PART 1 - GENERAL

1.1 SUMMARY

A. This section specifies of constructing cast-in-place colored concrete curb & gutters, along a prepared subgrade surface. Other work in this section includes saw cutting and demolition of asphalt, subgrade preparation, and placement and compaction of aggregate base.

1.2 DEFINITIONS

A. Cementitious Materials: Portland cement alone or in combination with one or more of the following: blended hydraulic cement, fly ash and other pozzolans, ground granulated blast-furnace slag, and silica fume; subject to compliance with requirements.

1.3 SUBMITTALS

A. Refer to Sections 033000 Cast-In-Place Concrete and 033540 Colored Concrete Site Amenities for details.

1.4 MEASUREMENT AND PAYMENT

A. The quantity to be measured shall be LINEAR FEET (LF) of colored concrete curb and gutter to be constructed and accepted as listed in the Schedule of Items. Payment shall include the cost to prepare the subgrade (which includes saw cutting, removing, and disposing asphalt), place and compact aggregate base, provide color and synthetic fibers in the concrete mix, and other incidental construction not indicated in the specifications, but shown on the drawings.

PART 2 - MATERIALS

2.1 COLORED CONCRETE

A. Concrete shall be in accordance with Specifications Section 033000 “Cast-In-Place Concrete.”

Concrete shall include Synthetic Fibers and integrally colored “sandstone brown”, or approved equal.

2.2 AGGREGATE BASE

A. Use Aggregate Base conforming to NDOT Section 704, Type II gradation.

2.3 JOINTS

A. Control (or weakened plane) joints shall be installed at maximum 10’ on centers.

B. Expansion joint (1/2" felt) shall be installed at maximum 30' on centers, or no expansion joints required if extruded curb (total length of curb and gutter in this contract is less than 300 feet).

PART 3 – EXECUTION

AT FOXTAIL 033550-2

3.1 SUBGRADE AND BASE PREPARATION

A. Sawcut a strip of existing asphalt pavement 6 inches wide by 290 feet long, and remove and dispose of asphalt off site to a commercial landfill.

1. Provide a smooth, flat surface for concrete to be placed against. This work is necessary to allow enough space for the rigid guide posts to be installed along the perimeter of the curb and gutter.

B. The subgrade shall be graded and shaped to the required elevations for construction of the base course and concrete curb and gutter.

1. Compact subgrade and remove from the subgrade all large rocks over 12 inches diameter, any asphalt chunks left over during demolition, and any organic materials.

2. Compact subgrade a minimum of three (3) complete passes or until visual displacement

3. Subgrade material shall be watered to its optimal moisture content prior to compaction.

Over-watered sections of subgrade (those having water “pump” to the surface during compaction) shall be removed, and fresh material shall be imported to repair the subgrade; place and compact as shown above.

4. The Forest Service shall approve the prepared subgrade surface prior to the placement of aggregate base.

C. The aggregate base course shall be constructed and compacted to the thickness shown in the drawings and in accordance to the following:

1. Compact subgrade a minimum of three (3) complete passes or until visual displacement

2. Aggregate base material shall be watered to its optimal moisture content prior to compaction. Over-watered sections of subgrade (those having water “pump” to the surface during compaction) shall be removed, and fresh material shall be imported to repair the subgrade; place and compact as shown above.

3. The Forest Service shall approve the placement and compaction of the aggregate base prior to the installation of concrete forms.

3.2 CONCRETE

A. Placement, Finishing, Curing, and Protection shall be in accordance with Section 033000, and as shown on the drawings.

B. Extrusion Machines shall not be allowed on this project due to the presence of completed asphalt pavement adjacent to the new curb & gutter.

C. Any longitudinal slope less than 0.4% along the flow line of the gutter shall be water-tested to verify water will properly drain and discharge.

3.3 DRAINAGE OUTLETS THROUGH CURB

AT FOXTAIL 033550-3

A. Provide suitable outlets through the new curb at 50-foot intervals (along the curb line).

B. Opening shall be 12 inches wide, with concrete extending (at 4 inches max. depth) from the opening to the grouted riprap swale, to allow surface runoff to discharge off roadway surface.

C. At the beginning of the curb and gutter, re-direct curb and gutter towards the grouted riprap swale, to allow surface water to discharge off the roadway surface and away from the highway.

3.4 JOINTS

A. The curb and gutter shall be divided into section by control joints formed by a jointing tool. The control (or weakened plane) joints shall extend into the concrete at least 1-inch deep, ¼-inch wide with 1/8-inch radius.

B. Spacing of expansion joints with…