AG-9702-S-10-0156 Special Reqs.docx

SPECIAL PROJECT SPECIFICATION

SECTION 104 - MAINTENANCE FOR TRAFFIC

104.1 Add after the first sentence of the first paragraph:

Boat ramp or other areas requiring work under this contract may be closed during construction.

A minimum of 15 days advance notice shall be given to the Government prior to the commencement of the work for public notification.

The sign plan shall include barracades and signing in conformance with MUTCD. The sign plan shall be approved by the Government prior to the beginning of work.

SECTION 160 - QUALITY CONTROL AND QUANTITY MEASUREMENT

160.03 SAMPLING, TESTING, INSPECTION, AND MEASUREMENT OF QUANTITIES.

Change the last sentance. Replace shall with will.

Add the following table to this subsection:

SAMPLING AND TESTING FREQUENCY

SECTION MATERIAL TEST FREQUENCY *

Test cylinder Four cylinders per truck load.

* Indicates minimum test frequency. Contractor shall perform repeat tests when test results do not meet contract requirements.

SECTION 204 – SOIL EROSION & WATER POLLUTION CONTROL

204.01 WORK.

Add the following:

Prior to commencing work the contractor is required to submit a written plan for approval by the Government an EROSION CONTROL PLAN.

Erosion Control will be maintained through the length of the project.

If weather or lake conditions force a shutdown period, all work items in progress that have not been completed and accepted, shall be protected by temporary erosion and pollution control measures.

R5-14 1 of 1 3/2005 204-1

SECTION 552 - STRUCTURAL CONCRETE

552.13 FINISHING CONCRETE SURFACES. Add the following:

A. V-Groove Launching Ramp Finish

NOTE: This is The Department of Boating and Waterways recommended procedure to produce the required concrete finish. It is up to the Contractor themselves to determine the best way to produce the required concrete finish.

V-Groove Detail

V-Groove Alignment

SECTION 552 - STRUCTURAL CONCRETE (CONT.)

Herringbone V-Grooves

3. On wide, multiple lane launching ramps, it is advantageous to alternate the direction of the Vgrooves from lane to lane, thus forming a "herringbone" pattern. This provides a distinct permanent delineation of the launching lanes. Changes in the direction of the Vgrooves should never be made except at launching lane lines.

B. V-groove tool design varies in size, shape, weight, and material used for fabrication. Steel, aluminum and wood tools have been used successfully. However, it appears that aluminum is perhaps the best choice in consideration of the tool's size, weight, and the ease and speed with which a finisher can produce crisp, straight V-grooves in wet concrete.

1. V-Groove Tool Design , for a tool to be used to finish large areas of cast-in-place concrete.

a. Weight: 22# to 25#

b. Length: 24" to 30"

c. Width: 20" to 24"

d. Material: 1"x 1" x 3/16" aluminum angle

e. Fabrication: Cut, shape, weld and grind smooth one end (see commentary below) of 14 to 17 pieces of aluminum angle to resemble the bow of a boat. Assemble the pieces to form a tool 20" to 24" wide. Fit them snugly together, slightly staggering each piece so as to form a 60o angle on both the leading and following edges so that the tool will fit snugly against the forms on each side of the launching lane. Weld the angles to cross pieces of larger angle or channel to hold the tool together. Provide an appropriate means of attaching a handle. The handle assembly for a "Fresno" float works well. If a "herringbone" finish is required on a multiple lane launching ramp, a second "mirror image" tool must be made in order to form V-grooves in alternating directions.

R5-14 3 of 6 5/05 552-1

SPECIAL PROJECT SPECIFICATION

SECTION 552 - STRUCTURAL CONCRETE (CONT.)

f. Commentary: Contractors have suggested cutting the trailing edge of the tool square rather than bow shaped. They claim that the wet concrete breaks free of the trailing edge much sharper and cleaner than it does from the gradual release from a bow shape. Also, some contractors prefer to build lighter tools and add field weights as required to get the best results and production.

C. V-Groove Construction Procedure

1. The consistent experience of the engineering staff of the Department of Boating and Waterways is that the successful accomplishment of satisfactory Vgrooves by contractors is a continuing problem. It is not a difficult task, but contractors are consistently overconfident of their skills, abilities, and past experience of finishing concrete on level ground. However, finishing Vgrooves on a 12%-15% slope is another matter. Consequently, it is strongly advised that contractors involved in V-groove finish work on launching ramps pay close attention to the following recommendations:

a. Use a concrete crew of not less than 5 workers including at least 2 finishers.

b. All tools, supplies, equipment and materials are to be on site before beginning placement of concrete.

c. Place concrete and finish one launching lane at a time, maximum width of 15' (up to 20' on single lane ramps).

d. Start early in the day with attention to:

e. Start concrete placement at bottom and work uphill. Some contractors insist on starting at the top and working downhill. However, the reasons for beginning at the bottom are several:

(1) Truck access is often limited to the launching lane. Therefore, the contractor can use the lane to deliver materials, and construct the launching ramp as he moves uphill. Starting at the top will require the contractor to drive heavy construction vehicles over new concrete, possibly breaking the peaks off the V-groove finish and/or cracking the slab.

SPECIAL PROJECT SPECIFICATION

SECTION 552 - STRUCTURAL CONCRETE (CONT.)

(2) Launching ramps are often built during the fall and early winter months when water levels are lowest, but also when rain and snow are probable. Starting at the top of the ramp may waste valuable time and access if the water level begins to rise. Starting at the bottom will help insure that the full design length of ramp can be constructed.

(3) Even though the concrete is relatively stiff, the wet concrete tends to creep downhill when it is being screeded and worked. Starting at the bottom lets gravity work for instead of against you. Gravity will hold the wet concrete in the forms, and downhill creep will not occur.

(4) Perhaps the best reason for starting at the bottom is that the contractor will typically learn and develop some technique as he goes along in the process of finishing the ramp. The ramp finish typically gets better with experience. Therefore, it is appropriate for the contractor to do his worst work at the bottom of the ramp, and his best work at the top where both the visibility and use are the greatest.

g. Limit placement of concrete to the following maximum rates per hour:

This will result in a production rate of about 3035 linear feet of 15' wide launching lane per hour, or an area of about 450525 square feet.

h. Adequately vibrate the concrete every 12" on centers with internal vibrators to eliminate air pockets, and to insure full contact with the rebar and construction forms. Do not over-vibrate as the aggregate will settle to the bottom and weaken the launching ramp slab.

i. Screed the wet concrete to the top of the forms using a vibratory power screed, working uphill via hand or gasoline powered winches. Do not attempt to manually drag the screed uphill!

j. Wood float the concrete as necessary to touch up and repair the screeded surface.

SPECIAL PROJECT SPECIFICATION

k. Beginning at the appropriate lower corner, begin forming V-grooves at 60o from the longitudinal axis of the ramp. Initially, there will be a triangular area at the very bottom of the ramp within which it will be awkward to use the V-groove tool. However, after progressing up the ramp to the point where the V-groove tool can be used over the full width of the launching lane, the grooving operation will be much easier. Care must be taken to insure that the 60o angles on the front and rear of the V-groove tool fit snugly against the forms on each pass of the tool across the wet concrete. It is often helpful to fabricate a couple of smaller V-groove hand tools to use in the tight corners at the top and bottom of the ramp. The offset from side to side of a 15' wide lane will be about 8'-8". The use of a straight 20' length of 2"x6" lumber will be of great assistance in maintaining the correct alignment and provides a guide for running the V-groove tool across the wet concrete. The diagonal distance across the launching lane will be about 17'-4". When done properly, crisp V-grooves can be formed with only one or two passes of the tool. L-finish each lane by traweling a 3” wide band surrounding them. This allows a clean, finished surface and minimizes the difficulty of V-grooving to the edges of each lane.

V-Groove Offset

l. Vibrate, screed and Vgroove one hourly placement of concrete before allowing the next placement. If unexpected delays occur between hourly placements due to equipment problems, traffic, etc., leave the rough edge along the upper side of the last placement generally along the same 60o alignment of the Vgrooves. This will eliminate most of the problems of trying to finish both "old" and "new" concrete on the same pass of the finish tool.

SECTION 554 - REINFORCING STEEL

554.07 MEASUREMENT Delete the entire section. Replace with:

The reinforcing steel and steel angle with anchor studs will not be measured for payment.

554.08 PAYMENT Delete the entire section. Replace with:

Reinforcing Steel. Reinforcing steel will not be paid separately and will be included in the cost of the concrete. Steel will meet the requirements of Section 554.

SECTION 601 - MOBILIZATION

601.02 METHOD Add:

The Government will pay in the first progress payment the total premiums paid by the contractor to obtain bonds. This payment will not be in addition to the contract price and will be included in item 601(01), Mobilization. Payment for bonds will not exceed pay item 601(01).

601.03 BASIS. Delete the last line and substitute:

601(01) Mobilization (includes Bonding Costs) Lump Sum

DIVISION 1 - GENERAL REQUIREMENTS

SECTION 01010 - SUMMARY OF WORK

GENERAL

1.01 Scope: The intent of this section is to outline in a general sense the work required under this contract. It is not intended to provide detailed specifications for materials, labor and workmanship. These are covered in other sections of these specifications.

1.02 Location of Work: The location of work is Fairview Boat Ramp. Please see the title sheet and vicinity map in the drawings for location of the site.

1.03 Description of Work:

BOAT RAMP: Existing ramp is 450 LF and is 60 feet wide. On a previous project, 350 LF of existing ramp was overlaid with 6” reinforced concrete and an eight foot wide sidewalk added to the outside edge with rail system. This project is to finish the last 100 feet of 6” overlayment with eight foot sidewalk and rail system. Base project will be for 60 feet with two 20 foot optional items to be awarded if funding allows.

1.04 Ramp will be staked in the field by the Contractor and verified by the Government. The contractor shall cut, fill and compact as necessary to obtain the desired elevations and exterior grades as shown on the plans. The Contractor shall be responsible for maintaining the stakes in the field and setting the necessary offset.

1.05 Drawings: The construction drawings that accompany these specifications and form a part of this contract are numbered and titled as listed below:

1.06 Approved Equal: The Government shall make the final decision on what shall be accepted as an "Approved Equal".

END OF SECTION

01010

DIVISION 1 – GENERAL REQURIEMENTS

SECTION 01061 - REGULATORY REQUIREMENTS GENERAL

1.01 SCOPE

A. This section describes the codes and standards which apply to the work in this contract. Additional codes and standard may be cited in sections to which they apply.

1.02 CODES AND STANDARDS

A. The following codes and standards shall apply to the work in this contract:

12. Steel Door Institute, Standard 100

13. American Water Works Association (AWWA)

14. National Fire Protection Association (NFPA)

15. Uniform Fire Code (UFC) 2005 Edition

16. American Gas Association (AGA)

B. Unless otherwise specified in this contract, reference to a specific standard or specification shall mean the latest edition or amendment in affect on the date of the invitation to bid.

1.03 DEFINITIONS

A. Administrative Authority as used in the Uniform Mechanical Code, the Uniform Plumbing Code and the National Electrical Code will be the Government.

B. Building Official as used in the Uniform Fire Code, Uniform Building Code and the Uniform Building Code Standards will be the Government.

PRODUCTS NOT APPLICABLE

EXECUTION NOT APPLICABLE

END OF SECTION

01061

DIVISION 1 – GENERAL REQUIREMENTS

SECTION 01300 – SUBMITTALS

GENERAL

1.01 SCOPE: This work consists of furnishing samples, shop drawings, pertinent data, and the submittal of technical information, including requests for substitutions. It describes the review time for submittals, shop drawings, and substitutions.

MEASUREMENT AND PAYMENT: No separate measurement or payment will be made for the work specified in this section.

REQUIREMENTS:

A. It will be the Contractor's responsibility to submit all information necessary to insure compliance. The Contractor shall submit information at least ten business days prior to beginning the associated work.

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 1 FAR 52.232-05 main types of work and total amount of contract.

PRODUCTS

Not Applicable

EXECUTION

3.01 MANUFACTURER’S LITERATURE AND SHOP DRAWINGS

Submit (2) two copies to the C.O. for approval on the items required herein.

Samples: Provide samples, unless otherwise specified or directed by the Government, identical to the article proposed and of sufficient size to demonstrate design, color, texture and finish. Submit (2) two samples of each color, style, etc.

Shop Drawings: Provide blueline or blackline prints, including one reproducible, as required elsewhere herein. Make drawings accurately and to a scale large enough to show all pertinent aspects of the item and its connection to the work. Shop drawing, specifications and construction drawings shall be submitted as specified and shall show any revision date.

Catalog Data: Provide catalog cuts, data, pertinent information and other items specified or as directed by the Government. Clearly indicate by circling or highlighting each Item.

Information must be adequate to determine compliance with specifications.

3.02 APPROVALS: Approval of satisfactory samples, substitutions and shop drawings will be made within 14 calendar days of the receipt of the submittal. Upon approval two copies of the approved shop drawings, samples and other items will be returned to the contractor. The Government will retain the reproducible.

3.03 RESUBMITTAL: When a resubmittal is required, one print so indicating will be returned to the Contractor. After revisions of the original, five new copies including one reproducible shall be submitted for approval.

3.04 TIMING: Make submittals far enough In advance of the scheduled dates of installation to provide time for reviews, for securing necessary approvals, for possible revisions and resubmittals and for placing orders and securing delivery.

3.05 No portion of the work requiring a shop drawing, sample, or catalog data shall be started nor shall any materials be fabricated or installed prior to the approval of such Item.

01300

DIVISION 2 - SITEWORK

SECTION 02220 - STRUCTURAL EXCAVATION AND BACKFILL

GENERAL

1.01 SCOPE: This Section covers excavation and backfilling for the installation of all structures.

1.02 PAYMENT: No separate payment will be made for work specified in this Section. Payment for this work will be included as part of the bid price for the parent items.

PRODUCTS

2.01 Backfill material shall be approved by the Government. Excavated materials from the site may be used, if approved. Imported fill, where required, shall be a non-expansive predominantly granular soil or soil-rock mixture, which is free from organic matter and deleterious substances. Backfill material shall not contain materials over 6 inches in greatest dimension. Material having a dimension greater than 4 inches shall not be used in the upper 6 inches of fill.

EXECUTION

3.01 Clearing and Grubbing: Clearing and grubbing shall be accomplished in accordance with Section 201 for all areas which require structural excavation. Clearing limits shall be as SHOWN ON THE DRAWINGS or staked on the ground.

3.02 Excavation:

A. Trenches or foundation pits for structure footings shall be excavated to the lines and grades or elevations shown on the plans or as staked by the Government. The elevations of the bottoms of footings, as shown on the plans, shall be considered as approximate only. Boulders, logs, or any other objectionable material encountered shall be removed. All rock or other hard foundation material shall be cleaned of all loose material and cut to a firm surface, either level, stepped, or serrated, as shown on the drawings or specified herein. All seams or crevices shall be cleaned out and grouted. All loose and disintegrated rock and thin strata shall be removed.

B. Excavation for formed concrete shall be of sufficient width to allow for convenient construction and removal of forms.

C. Excavation for on-grade slabs shall be sufficient to allow for gravel bedding material as indicated on the drawings or specified herein.

D. Where subgrade soils, which are expansive in nature, occur beneath foundations and on-grade slabs, they shall be maintained in a moist condition and not allowed to dry out and crack prior to covering with foundation or slab. Where necessary, such soils shall be slowly and uniformly moistened as required to close any shrinkage cracks and to minimize expansion of soil subsequent to construction.

E. All material to be excavated shall be unclassified and shall include earth fills, gravels, rock and other materials encountered in excavating and grading operations. The contract price shall include the removal of all materials to the depth and extent indicated on the drawings or specified herein.

F. Excess excavated material and material determined to be unsuitable shall be removed from the site to a disposal area designated as SHOWN ON THE DRAWINGS.

3.03 Approval of Foundation: After each excavation is completed, the Contractor shall notify the Government. No further work shall be performed until the Government has approved the excavation and the character of the foundation material.

3.04 Backfill:

A. After structure has been completed, the areas around the structure shall be filled with select material, in horizontal layers not over 8 inches in depth, and compacted to the level of the original ground surface or to finished grade, as shown on the drawings. Proper precautions shall be used to assure that backfill construction does not cause movement of or undue strain on any structure.

B. All suitable excavated material shall be utilized as backfill or embankment. Surplus material shall be disposed of in accordance with Section 203. No excavated material shall be deposited at any time so as to endanger the partly finished structure, either by direct pressure or indirectly by overloading bank contiguous to the operation, or other manner.

C. No backfill shall be placed against any structure until permission is given by the Government. In the case of concrete or other masonry, such permission shall not be given until the masonry has been in place 14 days, or until tests made by a laboratory establish that the concrete has attained sufficient strength to withstand any pressure created by the methods used and materials placed on it without damage or strain beyond a safe factor as established by the Government. Adequate provisions shall be made for thorough drainage of the backfill.

D. Compaction: All backfill shall be compacted to 95 percent of the maximum dry density as determined by AASHTO-T-99, Method C.

E. During the progress of the work, the Government will make density tests of compacted material in accordance with AASHTO-T-191, T-205, or other approved field density tests, including the use of nuclear testing devices. If the Government determines, by such tests, that the specified density has not been attained, the Contractor shall perform additional work as may be necessary to attain the specified compaction.

Landscape Rehabilitation: All areas which are disturbed as a result of structural excavation and backfill shall be graded to conform to existing ground.

02220

DIVISION 3 - CONCRETE

SECTION 03100 – CONCRETE FORMWORK

GENERAL

PRODUCTS

2.01 FORM COATINGS: Provide commercial formulation form coating compounds that will not bond with, stain, nor adversely affect concrete surface's bond or adhesion, nor impede the wetting of surfaces to be cured with water or curing compunds.

2.02 FORMS: Forms shall consist of plyform grade plywood, or approved equal, for exposed work; and boarding or plywood for concealed work.

2.03 WALERS, STUDS, AND BRACES: Support materials shall be of size and spacing to assure satisfactory alignment and strength of forms.

EXECUTION

3.01 INSTALLATION: All formwork shall be built accurately to the dimensions of the formed structure as shown on the Drawings. Forms shall be of sufficient strength to withstand any load during construction without undue deflection. Formwork shall be adjusted as required for the installation of work by others.

A. Form Coatings: Coatings shall be applied according to the manufacturer's recommendations.

B. Cleaning Forms: At the time concrete is placed in the forms, the surfaces of the forms shall be free from mortar or grout deposits or other foreign material.

C. Soaking: Forms shall be completely soaked until all joints are tight immedaitely before placement of concrete.

D. Approval of Work: All forms and foundations shall be approved by the Government before placement of concrete.

3.02 REMOVAL OF FORMS:

A. General: No form shall be removed until approval from the Government is obtained.

B. Forms: Forms shall not be disturbed for at least seven days after the last concrete is placed, except as authorized by the Government.

03100

DIVISION 3 - CONCRETE

SECTION 03200 – REINFORCING STEEL

GENERAL

1.01 SCOPE: The work of this Section consists of furnishing and placing the reinforcing steel required for this project As Shown On The Drawings or as specified herein.

1.02 QUALITY ASSURANCE: The fabrication and placement of the reinforcing steel shall be done in accordance with the following:

A. Uniform Building Code (UBC), 1997 edition.

B. Concrete Reinforcing Steel Institute's (CRSI) "Manual of Standard Practice."

C. CRSI "Placing Reinforcing Bars."

D. CRSI "Reinforcement Anchorages and Splices."

E. American Concrete Institute (ACI) "Building Code requirements for Reinforced Concrete" ACI 318-89.

F. ACI 315-89 "Manual of Standard Practice for Detailing Reinforced Concrete Structures."

1.03 SUBMITTALS: Data necessary to prove compliance with the Contract Documents shall be submitted in accordance with Section 01300.

1.04 PRODUCT HANDLING:

A. Comply with Section 01640.

B. Store reinforcing steel on timbers on the ground in such a manner as to prevent excessive rusting and to keep the steel free of mud dirt, grease, oil and other bond-reducing coatings.

C. Maintain bundle identification after bundles are broken.

1.05 MEASUREMENT AND PAYMENT: No separate measurement or payment will be made for the work specified in this Section.

PRODUCTS

2.01 REINFORCING MATERIALS AND ACCESSORIES:

A. Bars: Provide deformed billet steel bars meeting the requirements of ASTM A 615-81a, Grade 40.

B. Steel Wire: Shall meet the requirements of ASTM A 82-79. The wire shall be No. 16 gauge minimum, black, soft-annealed steel.

C. Welded Wire Fabric (If Shown on The Drawings): Shall meet the requirements of ASTM A 185-79.

D. Bolsters, chairs, spacers and other devices for spacing, supporting, and fastening reinforcement in place: Shall be in accordance with CRSI recommendations.

2.02 FABRICATION: Fabricate reinforcing bars to the required shapes and dimensions AS SHOWN ON THE DRAWINGS or specified herein.

EXECUTION

3.01 INSTALLATION:

A. General:

1. Comply with the specified standards for detail and method of placing reinforcement and supports, except as may be modified herein.

2. Clean reinforcement to remove loose rust and mill scale, earth, and other materials which reduce or destory bond with concrete.

3. Position, support, and secure reinforcement against displacement by formwork, construction, and concrete placing operations.

4. Locate and support reinforcement by metal chairs, runners, bolsters, spacers, and hangers as required.

5. Place reinforcement to obtain minimum coverages for concrete protection.

6. Arrange, space, and securely tie bars and bar supports together with the specified tie wire.

7. Set wire ties so twisted ends are directed away from exposed concrete surfaces.

B. Install welded wire fabric in the longest lengths practicable, lapping adjoining pieces at least one full mesh.

C. Provide sufficient numbers of supports, and of sufficient strength to carry the reinforcement.

D. Do not place reinforcing bars more than two inches beyond last leg of any continuous bar support.

E. Do not use supports as bases for runways for concrete conveying equipment and similar construction loads.

3.02 SPLICES:

A. Lap Splices: Tie securely with the specified wire to prevent displacement of splices during placement of concrete.

B. Splice Devices:

1. Obtain the Government's approval prior to using splice devices.

2. Install in accordance with manufacturer's written instructions.

3. Splice in a manner developing at least 125 percent of the yielding strength of the bar.

C. Do not splice bars except at locations Shown On The Drawings, except as otherwise specifically approved by the Contracting.

03200

DIVISION 3 - CONCRETE

SECTION 03300 – CONCRETE

GENERAL

1.01 SCOPE: The work specified in this section is to install concrete flat work and footings. The work shall include but not be limited to excavation for slabs and footings; forming, reinforcing and installation of new concrete slabs and footings and installing embedded items and incidentals AS SHOWN ON THE DRAWINGS and herein specified. See drawings for additional boat ramp concrete requirements.

QUALITY ASSURANCE:

A. The work shall be done in accordance with the following:

American Concrete Institute’s (ACI) Standards 318-89, ACI 117-90, ACI 305R-78, ACI 306R-78, ACI304-78, ACI 308-71, ACI 309-72, ACI “Slabs on Grade”.

Concrete Reinforcing Steel Institute’s (CRSI) Manual of Standard Practice #MSP-2-81.

Portland Cement Association’s Design and Control of Concrete Mixtures.

Provide test reports and mill certificates and other technical data showing cement provided meets the requirements AS SHOWN ON THE DRAWINGS and herein specified.

1.03 SUBMITTALS: Submit in accordance with Section 01300 a concrete mix design to be used for the concrete on the project for review and approval by the Government. Mix design shall show maximum permissible job site addition of water. No concrete work shall start until such approval is granted.

1.04 MEASUREMENT AND PAYMENT: No separate measurement or payment will be made for the work of this section.

PRODUCTS

MATERIALS: Materials shall be AS SHOWN ON THE DRAWINGS or as specified herein.

2.02 PORTLAND CEMENT: Portland Cement shall meet the requirements of ASTM C150, Type I or II. Cement shall be same brand for all the work. Concrete shall have a 3500 psi minimum 28 day compressive stregnth.

ADMIXTURES: Use only standard brand admixtures approved by the Government.

2.04 AGGREGATES: Aggregates shall meet the requirements of ASTM C33.

EXECUTION

3.01 MIXING: Ready-mix concrete shall be batched, mixed and transported in accordance with ASTM C94.

3.02 WATER ADDITION: Normally do not deliver concrete with total amount of permissible water already added. Withhold at least 2-1/2 gallons of water per cubic yard of concrete and add at the job site for proper workability and mix thoroughly for at least 5 minutes. Do not add water after the discharge of concrete has commenced. Do not exceed the maximum mix design’s water/cement ratio or maximum slump.

3.03 DELIVERY TIME: Concrete will be rejected if not discharged within 1-1/2 hours unless a mix design with retarder has been approved by the Government.

3.04 QUALITY CONTROL: The contractor is responsible for providing sampling and testing as follows:

ASTM C172 “Method of Sampling Fresh Concrete” ASTM C143 “Slump” ASTM C231 “Air Content” ASTM C39 “Cylinders-Compression Test”

See Special Project Specification 160 – Quality Control and Quantity Measurement for sampling and testing frequency. Testing must be performed by a certified materials testing laboratory.

The contractor is responsible for costs associtated with all sampling and testing activities.

3.05 CONSOLIDATION: Concrete footings and slab shall be vibrated but care shall be taken to insure the concrete is not over vibrated. Do not use vibration to move the concrete.

3.06 PLACEMENT/FINISH: Place and finish concrete AS SHOWN ON THE DRAWINGS.

3.07 CLEAN UP: The Contractor shall thoroughly clean the project site of all debris, construction materials and the like prior to requesting final inspection and payment. All debris and the like resulting from the work shall be removed from Government property and properly disposed of in accordance with City and State regulations.

3.08 SAFETY: The contractor has sole responsibility for the safety of the workers and all other person who may be affected by the work.

03300

DIVISION 3 – CONCRETE

SECTION 03300 - EPOXY GROUTED ANCHORS

PART 1 - GENERAL

1.1 DESCRIPTION

A. Scope: Furnish and place epoxy grouted anchors and do related work necessary to complete work shown or specified.

B. Codes, Specifications, and Standards: Codes, specifications, and standards referred to by number or title shall form a part of this specification to the extent required by the references thereto. Latest revisions shall apply in all cases.

1. Following is a partial list of American Concrete Institute publications which are applicable to concrete construction:

a. ACI 503.1 Standard Specification for Bonding Hardened Concrete, Steel, Wood, Brick, and Other Materials to Hardened Concrete with a Multi-Component Epoxy Adhesive.

b. ACI 503.2 Standard Specification for Bonding Plastic Concrete to Hardened Concrete with a Multi-Component Epoxy Adhesive.

1.2 SUBMITTALS

A. Submittals shall be as specified in the General Conditions.

B. Submit the following:

1. Manufacturer's Certificate of Compliance certifying compliance with the applicable specifications and standards.

1.3 PRODUCT DELIVERY, STORAGE, AND HANDLING

A. The Contractor shall be responsible for the delivery, storage, and handling of products.

B. Promptly remove damaged or unsuitable products from the job site. Replace damaged products with undamaged products. Replace unsuitable products with suitable products.

1.4 JOB CONDITIONS

A.. Manufacturer's recommendations shall be strictly followed in regard to atmospheric temperature limitations during application of epoxy or acrylic polymer modified concrete materials.

PART 2 - PRODUCTS

2.1 MATERIALS

A. Reinforcement

1. Reinforcing steel shall meet the requirements of ASTM Specification A 615, Grade 60.

2. Welded wire fabric or wire mesh shall meet the requirements of ASTM A 185.

I. Epoxy Adhesive and Grout

1. Epoxy adhesive and grout shall be epoxy-resin systems meeting the requirements of ASTM C 881 and the additional requirements herein.

2. The proper type, grade, and class (ASTM C 881) shall be chosen to suit the job requirements as follows:

a. Type

(1) I - For bonding hardened concrete and other materials to hardened concrete and setting anchor bolts and reinforcing bars in hardened concrete.

b. Grade

(1) 1 - For crack injection and spray application, light viscosity.

(2) 2 - For brush application, medium viscosity.

(3) 3 - For trowel or caulking gun application, non-sagging heavy viscosity for filling voids and gaps.

c. Class

(1) A - For use below 40°F.

(2) B - For use between 40°F and 60°F.

(3) C - For use above 60°F.

d. Color: All epoxy adhesives and grouts shall be concrete gray or clear if they will be visible on the final concrete surface.

3. The epoxy material shall consist of a two-component system conforming to the following requirements:

a. Properties of mixed components shall meet the following requirements:

(1) Solids content: 100% by weight

(2) Pot life: 30 minutes (minimum) @ 75°F

(3) Contact time: 2 hours @ 75°F

(4) Tack free time: 4 hours minimum @ 75°F

b. Properties of cured material shall meet the following requirements:

(1) Neat Binder

(a) Tensile Strength ASTM D-638: 3200 psi minimum @ 14 days, 75°F cure

(b) Tensile Elongation ASTM D-638 (Modified): 1% minimum @ 14 days, 75°F cure

(c) Compressive Strength ASTM D-695: 12,000 psi minimum @ 14 days, 75°F

(d) Compressive Modulus: 400,000 psi minimum @ 28 days, 75°F

(e) Water Absorption: 1% by weight, maximum 14 days 75°F cure 24 hours immersion

(2) Grout: One part Binder to three-and-quarter parts Aggregate by loose volume

(a) Compressive Strength ASTM C-109 (Modified) (2” Cubes): 12,000 psi minimum @ 28 days, 75°F cure

(b) Compressive Modulus (Modified): 1,250,000 psi minimum @ 28 days, 75°F cure

c. Aggregate shall meet the requirements of the resin manufacturer.

d. Chemical acceptance for SPI Classification -2- ('A' Component).

e. The following epoxy manufacturers' products, or equal products, will be considered for approval:

(1) SIKADUR as manufactured by Sika Chemical Corp., Lyndhurst, New Jersey.

(2) EPOTOX as manufactured by Toch Division, Carbolina, St. Louis, Missouri.

(3) SONOBOND as manufactured by Sonneborn - Contech, Minneapolis, Minnesota.

(4) PROBOND as manufactured by Protex Industries, Denver, Colorado.

3.1 EPOXY ADHESIVE AND GROUT

A. Use epoxy-resin system in accordance with ACI 503.1 when it is required to grout reinforcing bars or non-expansive anchors into existing concrete.

B. Install reinforcing bars and non-expansive anchors as follows, or the manufacturers recommendations:

1. Non-expansive anchors shall be threaded at least the full length of the embedded portion.

2. Vacuum or blow out the hole using oil-free compressed air when a dry drilling method is used.

3. When the drilling process requires the use of water, carefully wash out the hole after drilling to remove residue of drilling slurry. Hole should then be dried if possible.

4. Premix components for one minute with mixing paddle attached to low speed (400-600 rpm) electric drill. Pour equal volumes of each component into clean pail. Mix to uniform color. Add approximately a third of the aggregate; mix for another minute. Add remaining aggregate; continue mixing for two to three minutes until grout is thoroughly blended. Move drill continuously to thoroughly mix components. Keep paddle below surface of material to avoid whipping air into mix. Mix only that quantity which can be placed within 30 minutes.

5. Anchors or bars shall be clean, dry, degreased, and free of rust and scale.

6. Vertical Installation

a. Anchor bolts, dowels, and reinforcing bars may be installed by either of the following methods:

(1) Pour grout to a predetermined level in bolt hole and insert bolt into grout. Work bolt up and down while tapping lightly to ensure complete embedment.

(2) Insert bolt and pour grout into annular space between bolt and hole.

b. Use templates or wedges to hold bolts, dowels, or reinforcing bars in position until grout sets.

4.1 MEASUREMENT

The method of measurement will be per anchor installed

5.1 PAYMENT

The accepted quantities will be paid for at the contract unit price for each of the pay item shown in the SCHEDULE OF ITEMS.

END OF SECTION 03300

DIVISION 05 - METALS

SECTION 05501 – METAL FABRICATED RAIL SYSTEM

GENERAL

1.01 SCOPE

This section includes installation of metal fabricated rail system.

1.02 PROJECT CONDITIONS

Field Measurements: Check actual location construction to which metal fabrications must fit, by accurate field measurements before installation.

MEASUREMENT AND PAYMENT

Measurement. The quantity of items to be measured shall be the number of linear feet installed and accepted.

Payment. The quantities, as measured above, shall be paid for at the unit price per linear feet installed and accepted.

EXECUTION

3.01 PREPARATION

A. Coordinate and furnish anchorages, setting drawings, diagrams, templates, instructions, and directions for installation of anchorages, including concrete inserts, sleeves, anchor bolts, and miscellaneous items having integral anchors that are to be embedded in concrete construction. Coordinate delivery of such items to project site.

B. Set sleeves in concrete with tops flush with finish surface elevations; protect sleeves from water and concrete entry.

3.02 INSTALLATION, GENERAL

A. Fastening to InPlace Construction: Provide anchorage devices and fasteners where necessary for securing miscellaneous metal fabrications to inplace construction; include threaded fasteners for concrete inserts, toggle bolts, throughbolts, lag bolts, wood screws, and other connectors as required.

B. Cutting, Fitting, and Placement: Perform cutting, drilling, and fitting required for installation of miscellaneous metal fabrications. Set metal fabrication accurately in location, alignment, and elevation; with edges and surfaces level, plumb, true, and free of rack; and measured from established lines and levels.

C. Provide temporary bracing or anchors in formwork for items that are to be built into concrete construction.

D. Fit exposed connections accurately together to form hairline joints. Weld connections that are not to be left as exposed joints, but cannot be shop welded because of shipping size limitations. Do not weld, cut, or abrade the surfaces of exterior units which have been hotdip galvanized after fabrication, and are intended for bolted or screwed field connections.

E. Field Welding: Comply with AWS Code for procedures of manual shielded metalarc welding, appearance and quality of welds made, methods used in correcting welding work, and the following:

1. Use materials and methods that minimize distortion and develop strength and corrosion resistance of base metals.

2. Obtain fusion without undercut or overlap.

3. Remove welding flux immediately.

4. At exposed connections, finish exposed welds and surfaces smooth and blended so that no roughness shows after finishing and contour of welded surface matches those adjacent.

5. Damaged spelter coating caused by welding, field cutting or mishandling shall be cleaned and painted as specified in AASHTO M 36.

F. Secure nonremovable units to supporting members by welding where both materials are the same; otherwise, fasten by bolting as indicated above.

05501

TRINITY RIVER HELITACK OFFICE DIVISION 3 03200-

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