3 - MCT Vista Specs Vol I.pdf

MEXICAN CANYON TRESTLE OVERLOOK

INTERPRETATION AND TRAIL DESIGN

CLOUDCROFT, NM

UNITED STATES FOREST SERVICE

TABLE OF CONTENTS

DIVISION 01 – GENERAL CONDITIONS

010100 – SUMMARY OF WORK

010250 – DEFINITION OF BID ITEMS

011500 – HISTORICAL SITE PROTECTION

011700 – ACCIDENT PREVENTION

013300 – SUBMITTAL PROCEDURES

014000 – QUALITY REQUIREMENTS

014300 – CONTRACTOR QUALITY CONTROL

014580 – TESTING LABORATORY SERVICES

015000 – TEMPORARY FACILITIES AND CONTROLS

017000 – EXECUTION REQUIREMENTS

017700 – CLOSEOUT PROCEDURES

DIVISION 03 - CONCRETE

033000 – CAST-IN-PLACE CONCRETE/FLATWORK

DIVISION 04 - MASONRY

044300 – DRY STACK WALL

DIVISION 05 - METALS

051200 – STRUCTURAL STEEL

057300 – DECORATIVE METAL RAILINGS

DIVISION 06 - WOODS, PLASTICS AND COMPOSITES

061063 – EXTERIOR ROUGH CARPENTRY

DIVISION 12 - FURNISHING

129300 – SITE FURNISHINGS

DIVISION 31 - EARTHWORK

311000 – SITE CLEARING

312300 – EARTHWORK

316326 – DRILLED CAISSONS

DIVISION 32 - EXTERIOR IMPROVEMENTS

329200 – GRASSES

329300 – PLANTS

VOLUME II ROADWAY SPECIFICATIONS - REVISION TO 2007 SPECIFICATIONS

FOR HIGHWAY AND BRIDGE CONSTRUCTION -NEW MEXICO DEPARTMENT OF

TRANSPORTATION

REVISION OF SECTION 101 - ABBREVIATIONS, SYMBOLS, AND DEFINITIONS

REVISION OF SECTION 102 - BIDDING REQUIREMENTS AND CONDITIONS

April 28, 2010

MEXICAN CANYON TRESTLE OVERLOOK TABLE OF CONTENTS

April 28, 2010

MEXICAN CANYON TRESTLE OVERLOOK TABLE OF CONTENTS

REVISION OF SECTION 103 - AWARD AND EXECUTION OF CONTRACT

REVISION OF SECTION 104 - SCOPE OF WORK

REVISION OF SECTION 105 - CONTROL OF WORK

REVISION OF SECTION 106 - CONTROL OF MATERIALS

REVISION OF SECTION 107 - LEGAL RELATIONS, ENVIRONMENTAL

REQUIREMENTS AND RESPONSIBILITY TO THE PUBLIC

APPENDIX:

SOILS REPORT

SOILS REPORT ADDENDUM NO. 1

SOILS REPORT ADDENDUM NO. 2

INTERPRETIVE PLAN – OPTION 1

INTERPRETIVE PLAN – OPTION 2/BID OPTION #7

APRIL 2010 01330 - 1

MEXICAN CANYON TRESTLE OVERLOOK SUBMITTAL PROCEDURES

SECTION 01330

SUBMITTAL PROCEDURES

PART 1- GENERAL

1.1 SUMMARY

A. This Section includes administrative and procedural requirements for submitting Shop Drawings, Product Data, Samples, and other miscellaneous submittals.

B. See Division 1 Section "Quality Requirements" for submitting test and inspection re-ports and Delegated-Design Submittals.

C. See Division 1 Section "Closeout Procedures" for submitting warranties Project Re-cord Documents, operation and maintenance manuals and “as builts” drawings.

1.2 DEFINITIONS

A. Action Submittals: Written and graphic information that requires Contracting Officer’s (CO's) responsive action.

B. Informational Submittals: Written information that does not require CO's approval.

Submittals may be rejected for not complying with requirements.

1.3 SUBMITTAL PROCEDURES

A. Coordination: Coordinate preparation and processing of submittals with performance of construction activities.

1. Coordinate transmittal of different types of submittals for related parts of the Work so processing will not be delayed because of need to review submittals concurrently for coordination.

a. CO reserves the right to withhold action on a submittal requiring coordina-tion with other submittals until related submittals are received.

B. Processing Time: Allow enough time for submittal review, including time for resubmit-tals, as follows. Time for review shall commence on CO's receipt of submittal.

1. Initial Review: Allow 10 days for initial review of each submittal. Allow addi-tional time if processing must be delayed to permit coordination with subse-quent submittals. CO will advise Contractor when a submittal being processed must be delayed for coordination.

2. If intermediate submittal is necessary, process it in same manner as initial sub-mittal.

3. Allow 10 days for processing each resubmittal.

4. No extension of the Contract Time will be authorized because of failure to transmit submittals enough in advance of the Work to permit processing.

APRIL 2010 01330 - 2

C. Identification: Place a permanent label or title block on each submittal for identifica-tion.

1. Indicate name of firm or entity that prepared each submittal on label or title block.

2. Provide a space approximately 2 by 3 inches on label or beside title block to re-cord Contractor's review and approval markings and action taken by CO.

3. Include the following information on label for processing and recording action taken:

a. Project name.

b. Date.

c. Name and address of Contractor.

d. Name of manufacturer.

e. Unique identifier, including revision number.

f. Number and title of appropriate Specification Section.

g. Drawing number and detail references, as appropriate.

h. Other necessary identification.

D. Deviations: Highlight, encircle, or otherwise identify deviations from the Contract Documents on submittals.

E. Additional Copies: Unless additional copies are required for final submittal, and unless CO observes noncompliance with provisions of the Contract Documents, initial submittal may serve as final submittal.

F. Use for Construction: Use only final submittals with mark indicating action taken by CO in connection with construction.

PART 2 – PRODUCTS

2.1 ACTION SUBMITTALS

A. General: Prepare and submit Action Submittals required by individual Specification Sections.

1. Number of Copies: Submit three copies of each submittal, unless otherwise in-dicated. CO will return two copies. Mark up and retain one returned copy as a Project Record Document.

B. Product Data: Collect information into a single submittal for each element of con-struction and type of product or equipment.

1. If information must be specially prepared for submittal because standard printed data are not suitable for use, submit as Shop Drawings, not as Product Data.

2. Mark each copy of each submittal to show which products and options are ap-plicable.

3. Include the following information, as applicable:

a. Manufacturer's written recommendations.

b. Manufacturer's product specifications.

c. Manufacturer's installation instructions.

APRIL 2010 01330 - 3

d. Manufacturer's catalog cuts.

e. Wiring diagrams showing factory-installed wiring.

f. Compliance with recognized trade association standards.

g. Compliance with recognized testing agency standards.

C. Shop Drawings: Prepare Project-specific information, drawn accurately to scale. Do not base Shop Drawings on reproductions of the Contract Documents or standard printed data.

1. Preparation: Include the following information, as applicable:

a. Dimensions.

b. Identification of products.

c. Fabrication and installation drawings.

d. Roughing-in and setting diagrams.

e. Notation of dimensions established by field measurement.

D. Samples: Prepare physical units of materials or products, including the following:

1. Samples for Initial Selection: Submit manufacturer's color charts consisting of units or sections of units showing the full range of colors, textures, and patterns available.

2.2 INFORMATIONAL SUBMITTALS

A. General: Prepare and submit Informational Submittals required by other Specification Sections.

1. Number of Copies: Submit two copies of each submittal, unless otherwise indi-cated. CO will not return copies.

2. Certificates and Certifications: Provide a notarized statement that includes sig-nature of entity responsible for preparing certification. Certificates and certifica-tions shall be signed by an officer or other individual authorized to sign docu-ments on behalf of that entity.

3. Test and Inspection Reports: Comply with requirements in Division 1 Section "Quality Requirements."

B. Contractor's Construction Schedule:

1. The following submittal is required following award of contract for review and/or approval pursuant to contract provisions:

Item Description Copies Required References Cost breakdown schedule listing main types of work and totaling amount of contract

1 FAR 52.232-05

C. Material Test Reports: Prepare reports written by a qualified testing agency, on test-ing agency's standard form, indicating and interpreting test results of material for compliance with requirements.

APRIL 2010 01330 - 4

D. Field Test Reports: Prepare reports written by a qualified testing agency, on testing agency's standard form, indicating and interpreting results of field tests performed ei-ther during installation of product or after product is installed in its final location, for compliance with requirements.

E. Maintenance Data: Prepare written and graphic instructions and procedures for op-eration and normal maintenance of products and equipment. Comply with require-ments in Division 1 Section "Closeout Procedures."

F. Manufacturer's Instructions: Prepare written or published information that documents manufacturer's recommendations, guidelines, and procedures for installing or operat-ing a product or equipment. Include name of product and name, address, and tele-phone number of manufacturer.

PART 3 – EXECUTION

3.1 GENERAL

A. Review each submittal and check for compliance with the Contract Documents. Note corrections and field dimensions. Mark with approval stamp before submitting to CO.

B. Approval Stamp: Stamp each submittal with a uniform, approval stamp. Include Pro-ject name and location, submittal number, Specification Section title and number, name of reviewer, date of Contractor's approval, and statement certifying that submit-tal has been reviewed, checked, and approved for compliance with the Contract Documents.

C. CO will not review submittals that do not bear Contractor's approval stamp and will re-turn them without action.

D. Submittals not required by the Contract Documents will not be reviewed and may be discarded.

END OF SECTION 01330

APRIL 2010 033000 - 1

MEXICAN CANYON TRESTLE OVERLOOK CAST-IN-PLACE CONCRETE

SECTION 033000

CAST-IN-PLACE CONCRETE

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes cast-in-place concrete, including formwork, reinforcement, joints, concrete materials, mix design, placement procedures, and finishes. The work also includes required materials testing.

B. Related Work:

1. Section 312300: Earthwork

1.2 REFERENCES (latest revision unless noted otherwise)

A. ACI 117 - Standard Tolerances for Concrete Construction and Materials.

B. ACI 301 - Specifications of Structural Concrete for Buildings.

C. ACI 304 - Recommended Practice for Measuring, Mixing, Transporting and Placing

Concrete.

D. ACI 305 and 306 - Hot and Cold Weather Protection for Concrete.

E. ACI 309 - Recommended Practice for Consolidation of Concrete.

F. ACI 315 - Details and Detailing of Concrete Reinforcement.

G. ACI 318 - Building Code Requirements for Reinforced Concrete.

H. ACI 347 - Recommended Practice for Concrete Formwork.

J. ANSI/ASTM A82 - Cold Drawn Steel Wire for Concrete Reinforcement.

K. ANSI/ASTM A185 - Welded Steel Wire Fabric for Concrete Reinforcement.

L. ASTM A615 - Deformed and Plain Billet-Steel for Concrete Reinforcement.

M. ASTM C33 - Concrete Aggregates.

N. ASTM C94 - Ready-Mixed Concrete.

O. ASTM C150 - Portland Cement.

P. ASTM C260 - Air Entraining Admixtures for Concrete.

Q. ASTM C309 - Liquid Membrane-Forming Compounds for Curing Concrete.

APRIL 2010 033000 - 2

R. ASTM C494 - Water Reducing Admixtures for Concrete.

S. ASTM C618 - Fly Ash Mineral Admixture for Concrete.

T. ASTM M 43 – COARSE AGGREGATE.

U. CRSI - MANUAL OF STANDARD PRACTICE.

1.3 SUBMITTALS

A. Product Data: For each manufactured material and product indicated including admix-tures, patching compounds, joint systems, curing compounds, sealants, and other as requested by the Contracting Officer.

B. Certificates and Reports (Ready-Mix Concrete):

1. Concrete Mix Design: comply with ASTM C 94; furnish statement of composition of concrete mix and evidence that mix will meet quality specified herein, including cement content, fly ash content, entrained air content, design slump and unit weight.

2. Admixtures: Submit admixture types and manufacturers with a written statement showing chloride content if any chloride was added during manufacture.

3. Submit results to the Contracting Officer of concrete slump, air content, and compressive strength tests.

C. Shop Drawings:

1. All shop drawings shall be original drawings and shall not be reproductions of contract documents.

2. Drawings: Submit detailed drawings for fabrication, bending and placement of concrete reinforcement indicating size, dimension, bending, place and construc-tion joint details. Submit drawing showing locations of any construction joints not shown. Drawings shall be on minimum 18-inch by 24-inch drafting paper. In-clude all accessories specified and required to support reinforcement. Comply with ACI Detailing Manual SP 66 and requirements of ACI 318.

1.4 QUALITY ASSURANCE

A. Manufacturer Qualifications: A firm experienced in manufacturing ready-mixed con-crete products complying with ASTM C 94 requirements for production facilities and equipment.

B. Comply with ACI 301, "Specification for Structural Concrete," including the following, unless modified by the requirements of the Contract Documents.

1. General requirements, including submittals, quality assurance, acceptance of structure, and protection of in-place concrete.

2. Formwork and form accessories.

3. Steel reinforcement and supports.

4. Concrete mixtures.

5. Handling, placing, and constructing concrete.

APRIL 2010 033000 - 3

C. Concrete Mix Design (Ready-Mix):

1. Strength Requirements: ASTM C 94.

2. Testing:

a. Slump and Air Content Tests: Samples shall be taken from every truck after discharge of approximately 15 percent of load. If slumps differ by more than 2 inches, the mixer or agitator shall not be used until condition causing this variation is corrected. The equipment for these tests will be furnished by Contractor's certified independent testing laboratory techni-cian.

b. Compression Tests: Test specimens shall be made and cured in accor-dance with ASTM C 31 and tested in accordance with ASTM C 39, using standard 6-inch diameter by 12-inch high cylinders, and will be taken by the Contractor's certified independent testing laboratory technician. Cur-ing, shipment to, and testing by an independent laboratory shall be at the expense of the Contractor. The Contractor shall obtain 4 cylinders for every 50 cubic yards of concrete placed or for each major placement dur-ing the day whichever is more frequent. One cylinder shall be tested at an age of 7 days for information, two at an age of 28 days for acceptance, and one held in reserve to be tested if required.

c. Results of concrete testing shall be reported in accordance with Section 1.4.C.

3. Enforcement of Strength Requirements: If the 28-day strength test fails to meet the requirements of ASTM C 94, the Contracting Officer (CO) may require that core samples be taken and tested in accordance with ASTM C 42, at Contrac-tor's expense. If the core tests are below strength, if there is evidence of damage by freezing, or if the concrete fails to meet specifications in other ways, the Con-tracting Officer may require that the defective concrete be removed and replaced at no additional expense to the Owner.

D. The Contractor is responsible for quality control, including workmanship and materials furnished by his subcontractors and suppliers.

1. Inspection or testing does not relieve the Contractor of his responsibility to per-form the Work in accordance with the Contract Documents.

2. Workmanship: The Contractor is responsible for and shall bear the cost of cor-recting concrete work which does not conform to the specified requirements in-cluding, but not limited to, strength, tolerances, joint types and patterns, and fin-ishes. Correct deficient concrete by means acceptable to the Contracting Officer.

The cost of extra work incurred to approve corrective work shall be borne by the Contractor.

E. Record of Work: A record shall be kept by the General Contractor listing the time and date of placement of all concrete for the structure. Such record shall be kept until the completion of the project and shall be available to the Contracting Officer for examina-tion at any time.

APRIL 2010 033000 - 4

1.5 DELIVERY, STORAGE, AND HANDLING

A. General: Materials handling and batching shall conform to applicable provisions of

ASTM C94.

B. Reinforcing: Unload and store reinforcing bars so they will be kept free of mud and damage.

C. Extra Water:

1. Deliver concrete to site in exact quantities required by design mix.

2. Should extra water be required for workability before depositing concrete and wa-ter/cement ratio of accepted mix design has not been exceeded, the General Contractor's superintendent shall have sole authority to authorize addition of wa-ter. Any additional water added to mix after leaving batch plant shall be indicated on truck ticket and signed by person responsible.

3. Where extra water is added to concrete it shall be mixed thoroughly for 50 revo-lutions of drum before depositing.

4. Water may be added to the site only once for each batch.

5. An additional slump and air content test shall be performed following the addition of any water.

D. Redosage with High Range Water Reducing Mixture (Superplasticizer): May be done with prior acceptance of Contracting Officer regarding dosage and time periods.

PART 2 - PRODUCTS

2.1 FORMWORK

A. Formwork: Furnish formwork and form accessories according to ACI 301. Contractor shall be responsible for design, strength, and safety of formwork. Formwork shall be designed to withstand vibrator action. Design, strength, spans, details, etc. of forms, shall be the Contractor’s responsibility, and shall be in full conformance with the form manufacturer’s recommendations.

1. Concrete exposed to view shall have smooth form finish. Use metal or plastic lined panels or overlay plywood complying with PS 1, A-C or B-B High Density Overlaid Concrete Form, Class I, which will produce a smooth, hard, uniform tex-ture on the concrete. Do not use materials with raised grain, torn surfaces, worn edges, patches, dents, or other defects that will impair the surface of the con-crete. Furnish panels in largest practical sizes to minimize number of joints and to conform to joint system shown. Provide form material with sufficient thickness to withstand pressure of newly placed concrete without bow or deflection.

2. Forms for Unexposed Finish Concrete: Form concrete surfaces which will be unexposed in finished structure with plywood, lumber, metal, or other acceptable material. Provide lumber dressed on at least two edges and one side for tight fit.

3. Form Coatings: Provide commercial formulation form-coating compounds that will not bond with, stain nor adversely affect concrete surfaces, and will not im-pair subsequent treatments of concrete surfaces.

4. Inspection should occur prior to placing concrete. Forms should be inspected for cleanliness, accuracy of alignment, and reinforcing steel clearances.

APRIL 2010 033000 - 5

B. Form Ties: Form ties shall be snap-off metal type, of required length, 1 inch diameter cone ends at exposed concrete. Form ties shall be constructed so that no metal re-mains within 1 1/2 inch of the surface of the wall after removal of formwork.

C. Fillets for Chamfered Corners: Wood strips or rigid plastic type; size as detailed;

maximum possible lengths.

2.2 STEEL REINFORCEMENT:

A. Reinforcing Bars: ASTM A 615, Grade 60 deformed bars, uncoated finish. All rein-forcement to be welded shall be ASTM A706, Grade 60.

B. Plain-Steel Wire: ASTM A 82, as drawn, minimum 16 gauge, annealed type.

C. Plain-Steel Welded Wire Fabric: ANSI/ASTM A 185, fabricated from as-drawn steel wire into flat sheets, plain type, uncoated finish.

D. Deformed-Steel Welded Wire Fabric: ASTM A 497, flat sheet.

E. 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." Wood, brick or other unacceptable material is not permitted.

F. Concrete Materials:

1. Portland Cement: ASTM C 150, Type I or II, use one brand of cement through-out project unless approved otherwise. Use cement containing not more than

0.60 percent alkalis (calculated as the percentage of sodium oxide plus 0.658 times the percentage of potassium oxide) in concrete with aggregate that may be deleteriously reactive.

2. The use of fly ash as a cementitious component of the mix is encouraged. Fly ash shall conform to ASTM C618 Class C or F. Fly ash shall not exceed 20% of total cementitious material by weight.

3. Normal-Weight Aggregate: ASTM C 33, uniformly graded, obtain from same source throughout project.

a. Fine Aggregate: Natural sand.

b. Coarse Aggregate: Gravel or crushed stone containing no deleterious substances which cause surface spalling.

c. Maximum size of coarse aggregate shall be as follows:

For abutment, retaining walls and caissons.............. 3/4-inch

4. Coarse Aggregate: ASTM M 43.

a. Normal size aggregate percentage……55 % (min)

b. Size number…………………………..No. 67

5. Water: Potable, complying with ASTM C 94.

G. Admixtures: Unless specified, no admixtures may be used without specific approval of the Contracting Officer. All admixtures shall be compatible with each other and free of chlorides or other corrosive chemicals. Calcium chloride shall not be used.

Use of admixtures will not relax cold weather placement requirements.

APRIL 2010 033000 - 6

1. Air-Entraining Admixture: ASTM C 260, non-toxic after 30 days.

2. Water-Reducing Admixture: ASTM C 494, Type A, B, or mid-range.

3. High-Range, Water-Reducing Admixture: ASTM C 494, Type F or G.

4. Water-Reducing and Accelerating Admixture: ASTM C 494, Type C or E. The admixture manufacturer must have long-term, non-corrosive test data (of at least a year’s duration) using an acceptable accelerated corrosion test method such as electrical potential measurements.

5. Water-Reducing and Retarding Admixture: ASTM C 494, Type D.

H. Joint-Filler Strips: Pre-formed material conforming to the requirements of ASTM D 1751, asphalt-saturated cellulosic fiber. Size; ½” by depth of slab minus ½ inch or as indicated on the drawings.

I. Curing Materials: Curing compound or material shall be compatible with required fin-ishes and/or coatings.

1. Evaporation Retarder: Waterborne, monomolecular film forming, manufactured for application to fresh concrete.

2. Absorptive Cover: AASHTO M 182, Class 2, burlap cloth made from jute or ke-naf.

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

4. Water: Potable.

5. Clear, waterborne, Membrane-Forming Curing Compound: ASTM C 309, Type 1, Class B.

2.3 CONCRETE MIXES

A. Comply with ACI 301 requirements for concrete mixtures.

B. Prepare design mixes, proportioned according to ACI 301, for normal-weight concrete determined by either laboratory trial mix or field test data bases, as follows:

1. Materials: Materials, including cement, aggregates, water, and admixtures, shall meet the requirements of ASTM C 94, subject to the additional requirements of this section.

2. Quality of Concrete: Concrete shall be furnished under Alternative No. 3, ASTM C 94, whereby the manufacturer assumes full responsibility for the selection of the proportions for the concrete mixture, with the minimum allowable cement content specified. Submit statement of composition as specified in Part 1 of this section.

3. Compressive Strength (28 Days): 4000 psi.

4. Air Content: 6 % +/- 1 1/2 %.

5. Concrete Slump: 4 inches, with tolerances as specified in ASTM C 94

6. Maximum water/cement ratio: 0.45.

2.4 CONCRETE MIXING

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.

APRIL 2010 033000 - 7

B. Cementitious Materials: Use fly ash, pozzolan, ground granulated blast-furnace slag, and silica fume as needed to reduce the total amount of portland cement, which would otherwise be used, by not less than 40 percent.

C. Proportion normal-weight concrete mixture as follows:

1. Minimum Compressive Strength: 4000 psi at 28 days.

D. Ready-Mixed Concrete: Comply with ASTM C 94.

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.

E. Hauling Time: Discharge all concrete transmitted in a truck mixer, agitator, or other transportation device not later than 1-1/2 hours, or 300 revolutions of the drum after mixing water has been added, whichever is earliest. In hot weather, limit mixing time to 45 minutes or 125 revolutions of the drum. If the manufacturer cannot meet these requirements, then the water and cement shall be introduced into the mix at the project site.

F. Project-Site Mixing: Measure, batch, and mix concrete materials and concrete accord-ing to ASTM C 94. 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).

G. Provide batch ticket for each batch discharged and used in the Work, indicating Project identification name and number, date, mix type, mix time, quantity, and amount of wa-ter added. Record approximate location of final deposit in structure.

2.5 PATCHING GROUT

A. Portland cement, water, and fine sand passing a No. 30 mesh sieve.

B. Sikagrout 212 and Sikadur 32 Ni-Mod Manufactured by Sika Corporation, 875 Valley Brooks Avenue, Lyndhurst, NJ 07071, Ph (201) 933-8800 or approved equal.

2.6 NONSHRINK GROUT

A. Masterflow 928, manufactured by Master Builders, Inc., Construction Products Divi-sion, 23700 Chagrin Blvd., Cleveland, OH 44122, Ph (216) 831-5500, or approved equal.

2.7 SLEEVES

APRIL 2010 033000 - 8

A. PVC Schedule 40 pressure pipe or hot dipped galvanized pipe sleeves, two pipe sizes larger than carrier pipe, unless otherwise noted on the Drawings.

2.8 OTHER EMBEDDED ITEMS

A. Items encased in concrete shall not be painted.

2.9 BONDING AGENT

A. Two component liquid epoxy bonding agent.

1. Subject to compliance with requirements, use one of the following:

a. "Sikadur 32" - SIKA

b. "Resi-Bond" - Dayton Superior

c. "Concresive LPL" - Master Builders

d. Approved substitute (or equal).

2.10 ANCHORING SYSTEMS

A. Anchor Bolts: ASTM A307 Grade 36 headed type as indicated by pre-engineered bridge manufacturer.

PART 3 - EXECUTION

3.1 FORMWORK

A. Formwork: Design, construct, erect, shore, brace, and maintain formwork according to ACI 301. Maintain formwork to support vertical and lateral loads that might be applied until such loads can be supported by concrete structure. Construct formwork so con-crete members and structures are correct size, shape, alignment, elevation and posi-tion. Design formwork to be readily removable without impact, shock or damage to cast-in-place concrete surfaces and adjacent materials.

1. Chamfer all exposed horizontal and vertical edges or outer corners ¾ inch, both interior and exterior of structures, except where other construction contacts the concrete.

B. Arrange formwork construction to allow for proper sequencing and removal without damage. Use orderly and symmetrical panel arrangement with minimum number of joints. Mount panels on rigid supports to minimize deflection. Before proceeding, se-cure approval of formwork and procedures.

C. Forms:

1. Sufficiently tight to prevent loss of mortar.

2. Seal wood with coating material to minimize absorption of moisture from the con-crete.

3. Coat textured forms with release agent and others where required. Application shall be prior to reinforcement placement.

4. Coat steel forms with a non-staining, rust-preventive form oil or otherwise protect against rusting. Rust-stained steel formwork is not acceptable.

APRIL 2010 033000 - 9

D. Thoroughly remove all dirt, mortar, ice and foreign matter before each use. Where the bottom of the form is inaccessible from within, access panels shall be provided to per-mit thorough removal of extraneous material before placing concrete.

E. Where tolerances are not stated elsewhere in these specifications or drawings for any individual structure or feature, permissible deviations from established lines, grades, and dimensions are listed below:

1. Variation from the Plumb:

a. In the lines and surfaces of abutments and walls: In 10 feet, 1/4-inch; in any story or 20 feet maximum, 3/8-inch; in 40 feet or more, 3/4-inch.

b. For exposed corners, control-joints and other conspicuous lines: In any bay or 20 feet maximum 1/4-inch; in 40 feet or more, 2-inch.

2. Variation from the Level or from the grades shown:

a. In Top of Walls: In 10 feet, 1/4-inch; in any bay or 20 feet maximum, 3/8-inch; in 40 feet or more, 3/4-inch.

b. For exposed horizontal grooves and other conspicuous lines: In any bay or 20 feet maximum, 1/4-inch; in 40 feet or more, 2-inch.

3.2 INSTALLATION, GENERAL

A. Joints: Construct joints true to line with faces perpendicular to surface plane of con-crete.

1. Construction Joints: Locate and install so as not to impair strength or appear-ance of concrete, at locations indicated or as approved by CO. Make joints per-pendicular to the main reinforcement. Continue all reinforcing steel across con-struction joints.

2. Expansion Joints: Install joint-filler strips at junctions with slabs-on-grade and vertical surfaces, such as column pedestals, foundation walls, grade beams, and other locations, as indicated.

a. Extend joint fillers full width and depth of joint, terminating flush with fin-ished concrete surface, unless otherwise indicated.

B. Tolerances: Comply with ACI 117, "Specifications for Tolerances for Concrete Con-struction and Materials."

C. Other Embedded Items, Penetrations, and Blockouts:

1. Before concreting, place all required sleeves, inserts, anchor bolts, and embed-ded items. Anchor to prevent floatation and displacement. Coordinate anchor bolt size, number and location with pre-engineered bridge supplier.

2. Give all trades whose work is related to the concrete ample notice and opportu-nity to introduce embedded items before concrete is placed.

3. Position embedded items accurately and support them against displacement. Fill voids in sleeves, and inserts, and anchor slots temporarily with readily removable material to prevent the entry of concrete.

3.3 REINFORCEMENT

APRIL 2010 033000 - 10

A. Steel Reinforcement: Comply with CRSI's "Manual of Standard Practice" for fabricat-ing, bending, placing, and supporting reinforcement.

B. Design: The reinforcement design shown on drawings shows only the necessary in-formation for detailing the reinforcement and preparing placing and bending details.

C. Placement: Place reinforcement accurately as shown. Adequately secure metal reinforcement in position by concrete or metal chairs and spacers, in accordance with CRSI Manual of Standard Practice. Distance between the steel and the surface, as shown; otherwise, in accordance with the CRSI Manual. In walls, use bolsters or chairs between form and reinforcement to prevent lateral displacement of reinforce-ment and to ensure proper concrete cover.

D. Placing bars in fresh concrete as the Work progresses (“stabbing”), and adjusting bars during the placement of concrete shall not be permitted.

E. Splices:

1. Bar laps shall be in contact and securely tied.

2. Locate splices of reinforcement as shown. For any splices not shown, provide splice length as called for on the Drawings and in accordance with ACI 318.

3. In beams and slabs, all top bars shall be spliced at midspan and all bottom bars shall be spliced at supports.

4. Install welded wire fabric in as long lengths as practicable. Lap adjoining pieces at least one full mesh and lace splices with wire. Offset end laps in adjacent widths to prevent continuous laps in either direction.

F. Reinforcement shall be continuous around corners.

G. Bars shall not be field bent or cut unless otherwise approved by the Contracting Offi-cer. Bars shall not be bent or straightened in a manner that will damage the bars. The use of heat to bend or straighten bars shall not be permitted.

H. Tack welding of reinforcing bars is not permitted without written permission of the Con-tracting Officer.

I. Inspection: After reinforcement has been placed, it shall be inspected by the Contract-ing Officer or the Contracting Officer’s representative prior to placing the concrete.

J. Condition of Surfaces: At time concrete is placed, all metal reinforcement shall be free from rust, scale, frost, or other coatings that would destroy or reduce the bond.

3.4 CONCRETE PLACEMENT

A. Comply with recommendations in ACI 304R for measuring, mixing, transporting, and placing concrete.

B. Do not add water to concrete during delivery, at Project site, or during placement.

C. Preparation Before Placing:

APRIL 2010 033000 - 11

1. Remove hardened concrete and foreign materials from inner surfaces of convey-ing equipment.

2. Check formwork for completion, check position and securing of reinforcement, joint material, sleeves, anchors, and other embedded items, and obtain approval on entire preparation.

3. Remove ice and excess water and sprinkle semi-porous sub-grades sufficiently to eliminate suction.

4. Do not place concrete on frozen ground.

5. Do not place concrete during rain, sleet, or snow unless protection is provided.

D. Depositing:

1. Place concrete in final position to avoid segregation due to re-handling or flowing.

Spread concrete in horizontal layers and do not drop more than 5 feet without us-ing drop chutes. Place concrete at such a rate that the concrete remains plastic and flows readily into spaces between bars. Do not deposit concrete that has partially hardened or become contaminated by foreign material. Lifts shall be kept between 6 inches and 20 inches high and shall be of a height to minimize surface defects and eliminate rock pockets and cold joints.

2. Deposit concrete continuously and rapidly enough so that the layer supporting the one being placed is still plastic. If continuous placement is impossible, locate construction joints where shown or as approved.

3. Remove temporary form spreaders when concrete reaches them.

4. Do not begin placing concrete in supported elements until the concrete previ-ously placed in beams and walls has cured a minimum of one day.

E. Compacting:

1. Unless otherwise directed use high frequency mechanical vibrators in the place-ment of concrete forms to avoid honeycombs and voids, especially at construc-tion joints, expansion joints, valley and at ends of form sheet. When concrete is being placed on hardened concrete or in bottom of forms, exercise care to en-sure complete consolidation. After the initial lift, vibrator shall penetrate through and into top of previous lift of concrete.

2. Internal vibrators shall have a minimum frequency of 8,000 rpm. Overvibrating and use of vibrators to transport concrete within forms shall not be allowed. In-sert and withdraw vibrators at many points, from 18 to 30 inches apart, for 5- to 15-second duration. Keep a spare vibrator on the project site during all concrete placing operations.

3. Once concreting is started, it shall be carried on as a continuous operation until the placing of the panel or section is completed, preventing fresh concrete from being deposited on concrete which has hardened sufficiently to cause formation of seams and planes of weakness within the section.

4. Remove splashes or accumulations of hardened or partially hardened concrete or mortar on forms or reinforcement above general level of the concrete already in place before the work proceeds.

5. Maintain reinforcement in proper position during concrete placement operations.

6. Bring slab surfaces to correct level with straightedge and strike off. Use bull floats or darbies to smooth surfaces free of lumps or hollows. Do not disturb slab surfaces prior to beginning finishing operations.

APRIL 2010 033000 - 12

F. Cold Weather Placing:

1. Protect concrete work from physical damage or reduced strength which could be caused by frost, freezing actions, or low temperatures, in compliance with ACI 306 and as herein specified.

2. When air temperature has fallen to or is expected to fall below 40 F (4 C) on the day of concrete placement, preparation, protection and curing of concrete shall comply with ACI 306R.

3. Concrete temperature at time of placement shall conform to minimum values of ACI 306.R, and shall not exceed minimum values by more than 20o F.

4. Subject to acceptance of Contracting Officer an accelerating admixture may be used. Admixtures shall meet requirements of Part 2. Calcium Chloride and other chloride-type accelerating admixtures will not be allowed.

5. Comply with concrete protection temperature requirements of ACI 306.R. Re-cord concrete temperatures during specified protection period at intervals not to exceed 16 hours and no less than twice during any 24 hour period.

6. Submittal of detailed procedures, means, and methods, for production, transpor-tation, placement, protection, curing, and temperature monitoring of concrete dur-ing cold weather is required.

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

8. Do not use calcium chloride, salt or other materials containing antifreeze agents or chemical accelerators, unless other wise accepted in mix designs.

G. Hot Weather Placing:

1. When hot weather conditions exist that would seriously impair quality and strength of concrete, place concrete in compliance with ACI 305R and as herein specified.

2. Cool ingredients before mixing to maintain concrete temperature at time of placement below 85 F (32 C).

3. When air temperatures on day of placement are expected to exceed 90 F, Mixing water may be chilled, or chopped ice may be used to control temperature pro-vided water equivalent of ice is calculated to total amount of mixing water.

4. Retarding admixture may be used subject to acceptance of Contracting Officer.

Admixtures shall meet requirements of Part 2.

5. Protect to prevent rapid drying. Start finishing and curing as soon as possible.

3.5 SHORES AND SUPPORTS

A. Comply with ACI 347 for shoring and reshoring. Contractor will be fully responsible for the design, construction, and performance of shoring and reshoring.

3.6 FORM REMOVAL

A. Carefully remove forms to ensure the complete safety of the structure. Vertical forms of walls may be removed after 24 hours, providing the concrete will not be injured. All supporting forms shall remain in place for a minimum of 14 days and until concrete has obtained design minimum compressive strength. Do not remove supporting forms or shoring until members have acquired sufficient strength to support their weight and imposed loads safely.

3.7 REPAIRING AND PATCHING

APRIL 2010 033000 - 13

A. Patch all the tie holes and all repairable defective areas immediately after form re-moval.

B. All honeycombed and other defective concrete shall be removed to sound concrete with edges perpendicular to the surface. Dampen the area to be patched and an area at least 6 inches wide surrounding it to prevent absorption of water from the patching grout. Mix bonding agent to the consistency of thick cream and brush it well into the surface.

C. Make the patching grout of the same material and approximately the same portions as used for the concrete, omitting the coarse aggregate. The resultant grout shall consist of not more than 1 part cement to 2-1/2 parts sand by damp loose volume.

D. Do not use more mixing water than necessary for handling and placing. Mix the patch-ing grout in advance and allow to stand with frequent manipulation with a trowel, with-out adding water, until it has reached the stiffest consistency that will permit placing.

E. When the bonding agent begins to lose the water sheen, apply the premixed patching grout. The grout shall be thoroughly consolidated into place and struck off to leave the patch slightly higher than the surrounding surface. To permit initial shrinkage, leave the patch undisturbed for at least 1 hour before finishing it. Keep the patched area damp for 7 days. Do not use metal tools in finishing a patch in a formed wall that will be exposed.

F. Tie holes: Clean and thoroughly dampen, then fill solid with patching grout.

3.8 FINISHING FORMED SURFACES

A. Rough-Formed Finish: As-cast concrete texture imparted by form-facing material with tie holes and defective areas repaired and patched, and fins and other projections ex-ceeding 1/4 inch (6 mm) in height rubbed down or chipped off.

1. Apply to concrete surfaces not exposed to public view.

B. Smooth-Formed Finish: As-cast concrete texture imparted by form-facing material, ar-ranged in an orderly and symmetrical manner with a minimum of seams. Repair and patch tie holes and defective areas. Completely remove fins and other projections. All form marks should be ground flush so that the concrete surface is smooth.

1. Apply to concrete surfaces exposed to public view or to be covered with a coat-ing or covering material applied directly to concrete, such as waterproofing, damp-proofing, veneer plaster, or painting.

2. Do not apply rubbed finish to smooth-formed finish.

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 sur-faces uniformly across adjacent unformed surfaces, unless otherwise indicated.

D. Protect concrete from damage until completion of concrete sealing.

3.9 FINISHING UNFORMED SURFACES

APRIL 2010 033000 - 14

A. General: Comply with ACI 302.1R for screeding, restraightening, and finishing opera-tions for concrete surfaces. Do not wet concrete surfaces.

B. Screed surfaces with a straightedge and strike off. Begin initial floating using bull floats or darbies to form a uniform and open-textured surface plane before excess moisture or bleedwater appears on the surface.

1. Do not further disturb surfaces before starting finishing operations.

3.10 CONCRETE PROTECTION 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 follow rec-ommendations in ACI 305R for hot-weather protection during curing.

B. Evaporation Retarder: Apply evaporation retarder to concrete surfaces if hot, dry, or windy conditions occur before and during finishing operations. Apply according to manufacturers written instructions after placing, screeding, and bull floating or darbying concrete, but before float finishing.

C. Begin curing after finishing concrete, but not before free water has disappeared from concrete surface.

D. Cure formed and unformed concrete for at least seven days as follows:

1. Moisture Curing: Keep surfaces continuously moist with water or continuous wa-ter-fog spray. Cover concrete surface with absorptive cover, thoroughly saturate cover with water and keeping continuously wet. Place absorptive cover to pro-vide coverage of concrete surfaces and edges, with 4” lap over adjacent absorp-tive 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. Immediately repair any holes or tears during curing period using cover material and waterproof tape.

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.

4. The selected curing method shall be applied to the concrete immediately upon removal of forms.

E. Protection:

1. In cold weather, maintain the moisture conditions but also, by heating or cover-ing, maintain temperature of the concrete between 50º F and 70º F for entire cur-ing period.

2. In hot weather, take immediate steps to protect newly finished concrete from the drying effects of wind and sun, and maintain temperature of the air surrounding the concrete uniform within 5º F in any one hour or 50º F in any 24-hour period.

APRIL 2010 033000 - 15

3. During curing period, protect concrete from mechanical damage, loading, shock, and vibration.

3.11 NONSHRINK GROUT

A. Use nonshrink grout to fill sleeves and voids under equipment and column bases.

Grout shall be mixed and used in accordance with manufacturer's recommendations.

Exposed edges shall be smooth, straight, and even.

3.12 DAMAGED OR DEFECTIVE CONCRETE

A. Remove damaged or defective concrete before completion and acceptance of the work and replace with acceptable concrete.

END OF SECTION

April 2010 DRY STACK WALL

MEXICAN CANYON TRESTLE OVERLOOK 044300 - 1

SECTION 044300 - DRY STACK WALL

PART 1 – GENERAL

1.1 SUMMARY

A. Work included:

Furnish all labor, equipment and materials necessary to install rock retaining walls as designed and detailed on the drawings and specified herein. Work includes, but is not limited to, the following:

1. All excavation, back-filling and related earthwork.

2. Construction of the dry stack retaining walls.

1.2 TESTING

A. Determination of relative compaction shall be based on Test Method ASTM 0698.

Tests shall be performed by a certified soil testing firm with a minimum of one field density test for each two feet of backfill. Exact location of tests shall be determined by the Project Manager and / or United States Forest Service.

B. Test results shall show the location, depth and percent of compaction of all tests including those that failed and were re-tested.

PART 2 - MATERIALS

2.1 ROCK

A. Rock for retaining walls shall be grey granite, local derivative, irregular sided, uncut retaining wall stone. Stones shall be sized from 8” to 24” in all dimensions. All stones shall be sound, free from cracks, rifts, seams or laminations.

B. After award of the Contract, samples of the quarried on-site stone showing the complete color range of material available shall be submitted to the landscape architect or to the project manager for approval. The landscape architect or project manager shall submit written approval upon the acceptance of the color range. The Landscape architect or project manager has the right to reject individual stones on-site due to poor coloration, size, or any other imperfections which, in the sole opinion of the project manager, are judged to be unacceptable.

C. Rock for retaining walls shall not have stones of thickness (rise) less than 6" or a width less than 1-1/2 times the thickness. The length shall not exceed two times the rise, nor shall it be less than one foot. The length shall not be more than the thickness of the wall, where the work is less than four feet in thickness. The width of headers shall be no less than their rise.

MEXICAN CANYON TRESTLE OVERLOOK 044300 - 2

1. In general, the dimensions of the rock on the wall face shall be a minimum 6" in height and 2' in length with a maximum 24" in height and 42" in length, with the size variations being evenly distributed in the wall face.

D. Cap stones should be uncut, irregular sided and approximately 18” x 6” x 3”. All stones shall be sound, free from cracks, rifts, seams or laminations.

2.2 GEOTEXTILE FABRIC

A. N-Series (1100N) Nonwoven Polypropylene Geotextile Fabric from Mirafi, 365 S.

Holland Dr. Pendergrass, GA., (PH. 706.693.2220), www.mirifi.com, or approved equal.

2.3 GRANULAR FILL

A. Granular Fill: Use free-draining material consisting of sand, gravel, or crushed stone. All materials shall meet the following gradation requirements:

GRANULAR FILL GRADATION

U.S. Standard Percent by Weight Passing Square Sieve Size Mesh Sieves

CDOT Class B 1-inch 100 No. 4 20-60 No. 16 10-30 No. 50 3-10 No. 200 0-3

PART 3 - EXECUTION

3.1 LAYOUT

A. The Contractor shall provide field staking of the wall's horizontal layout and assume full responsibility for the accuracy of this layout. He shall verify all dimensions on all the drawings and shall report to the Landscape Architect or Project Manager any discrepancies before proceeding with related work.

B. Upon completion of field staking the wall layout, but prior to any excavation, the

Contractor shall notify the Landscape Architect or Project Manager of the necessity to inspect the layout. Upon inspection by the Landscape Architect or Project Manager and any required subsequent revisions, the Landscape Architect or Project Manager will issue a written approval for the layout. The Contractor shall not proceed with excavation until written approval has been given by the Landscape Architect or Owner’s Representitive.

3.2 EXCAVATION AND BACKFILLING

A. Excavate to levels required as indicated in the drawings and details. Footing trenches shall be excavated 12" minimum beyond the width shown in the details.

http://www.mirifi.com/

MEXICAN CANYON TRESTLE OVERLOOK 044300 - 3

Scarify the footing trench bottom to a minimum depth of 8" then compact to 95% Standard Proctor Density.

B. Cut geotextile fabric to a length that allows for complete encasement of granular base footing. Place fabric in the bottom of compacted footing trench at the depth indicated on the drawings. Fill fabric with 1 foot of granular fill and compact. Encase fill material in geotextile fabric by overlapping excess material.

C. Backfilling behind the footing trench and behind the wall shall be done by compacting 6" layers to the proper level. Compaction shall be accomplished by use of a mechanical hand-tamping device. All backfill shall meet 95% Standard Proctor Density at +/- 3% of optimum moisture.

D. Material in each layer shall contain moisture required for optimum compaction.

Moisture content shall be uniform throughout layers. Add necessary moisture to backfill material prior to placement.

3.3 GRADING

Grade as necessary to accomplish the elevations indicated on the drawings.

Grades shall be held within…