SECTION 033000

CAST-IN-PLACE CONCRETE

PIERCE COUNTY

ANNEX EVSE SERVICE 033000 - 1 CD SET

PART 1 GENERAL

1.01 DESCRIPTION OF WORK

A. Work includes the installation of cast-in-place concrete and control density fill (CDF), including formwork, reinforcement, concrete materials, mixture design, placement procedures, and finishes, for the following:

1. Concrete Curb

2. Control Density Fill (CDF)

1.02 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specifications Sections, apply to this Section.

B. The following Sections relate to this section:

1. Section 312333 TRENCHING AND BACKFILLING

2. Section 321123 AGGREGATE BASE COURSES

1.03 STANDARD SPECIFICATIONS

A. All work to be performed and materials to be used shall be in accordance with the current edition of the Standard Specifications for Road, Bridge, and Municipal Construction, and the current Standard Plans as published by the Washington State Department of Transportation (WSDOT), unless otherwise indicated herein.

B. Contractor shall have one (1) copy of the current edition of the Standard Specifications and all amendments therein, and applicable WSDOT Standard Plans at job site.

C. Standard Specifications apply only to performance and materials and how they are to be incorporated into the work. Legal/contractual relationship sections and the measurement and payment sections do not apply to this document.

1.04 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.

1.05 QUALITY ASSURANCE

A. Batch Tickets: Provide batch tickets for each truckload of concrete used in the work, indicating project identification name and number, date, mix type, mix time, quantity, and amount of cement and water introduced.

1.06 SUBMITTALS

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

B. Design Mixtures: For each concrete mixture. Submit alternate design mixtures when characteristics of materials, project conditions, weather, test results, or other circumstances warrant adjustments.

1. Submit proposed mix designs at least 15 days in advance of placing operations for each type of concrete. The submitted mix designs shall include the following:

a. Proportions of all ingredients, including all admixtures added either at time of batching or at job site. Aggregate weights shall be based upon saturated surface dry conditions.

ANNEX EVSE SERVICE 033000 - 2 CD SET

b. Water/cement ratio.

c. Slump (ASTM C 143): When high range water-reducing admixtures are used, slump before and after addition of admixture are required.

d. Air content of freshly mixed concrete (ASTM C 231).

e. Strength is measured at 7 and 28 days. Strengths shall be as tested using 4" x 8" cylinders in accordance with ASTM C 31 and ASTM C 39

f. Certification that all ingredients in each mix design are compatible.

g. Locations or intended use of each mix design.

h. Source of all materials.

2. Indicate amounts of mixing water to be withheld for later addition at Project site Submit proposed mix designs at least 15 days in advance of placing operations for each type of concrete.

1.07 FIELD MEASUREMENTS

A. Verify that field measurements and conditions are as shown on drawings, shop drawings, or as instructed by Product Manufacturer.

PART 2 PRODUCTS

2.01 CONCRETE FORMS

A. Forms shall meet the requirements of WSDOT Section 8-14.3 (2) FORMS. All forms shall be free from warping and dents.

2.02 CEMENT CONCRETE

A. All concrete shall be Class 3000 meeting the requirements of Section 6-02 of the WSDOT Standard Specifications.

B. CDF shall meet the requirements of Section 2-09.3(1)E of the WSDOT Standard Specifications.

C. Colored CDF shall be CSI #120 Red ASTM Specification C-979-82 or approved equivalent.

2.03 CONCRETE CURING MATERIAL AND ADMIXTURES

A. All concrete curing materials and admixtures shall meet the requirements of WSDOT Section 9-

23 CONCRETE CURING MATERIALS AND ADMIXTURES.

PART 3 EXECUTION

3.01 PREPARATION

A. The Contractor shall determine an appropriate means of staging and phasing for the construction such that construction does not interfere with the operation of the facility.

B. Place and compact crushed surfacing top course as shown on the plans.

3.02 FORMING

A. Forms shall be of wood or metal and shall extend for the full depth of the concrete. Clean forms and adjacent surfaces to receive concrete. Remove chips, wood, sawdust, dirt, and other debris just before placing concrete.

B. Clean and compact crushed surfacing top course as shown on the surfaces.

ANNEX EVSE SERVICE 033000 - 3 CD SET

C. All forms shall be straight, free from warp, and of sufficient strength to resist the pressure of the concrete without springing. Bracing and staking of forms shall be such that the forms remain in both horizontal and vertical alignment until their removal.

D. After the forms have been set to line and grade, the foundation shall be brought to the grade required and thoroughly wetted approximately 12 hours before placing the concrete.

E. Chamfer exterior corners and edges of permanently exposed concrete.

F. Inspect all contact surfaces prior to concrete placement. Verify that surfaces are clean, smooth, and free from foreign matter or imperfections affecting the appearance of the finished concrete.

3.03 PLACING AND FINISHING THE CONCRETE

A. The foundation shall be watered thoroughly before the concrete is placed.

B. Do not add water to the concrete mix after acceptance testing has taken place.

C. The concrete shall be well tamped and spaded or vibrated in the forms. The concrete shall be placed in the forms and struck off with an approved straightedge to finished grade.

D. Concrete Curb

1. Contractor shall sawcut, remove, and replace all curb impacted by construction in kind. New curb shall match existing.

E. CDF shall be placed per the requirements of Section 2-09.3(1)E of the WSDOT Standard Specifications. CDF shall be placed continuously. To contain CDF when filling long open trenches or open ended structures in stages, the end points shall be adequately bulkheaded to prevent movement. Methods may include bulkheading with sandbags, earth dams, forms or stiffer mixtures of CDF. CDF shall be placed from the centerline of mainline utilities to the bottom of the excavation. CDF shall be placed in a manner to prevent flotation or displacement of the embedded item. Methods of preventing flotation or displacement may include placement of CDF in lifts, faster setting CDF or lower slump CDF over the embedded item.

F. CDF coloring dosage shall be a minimum of 10 pounds per cubic yard of CSI #120 Red ASTM Specification C-979-82 or approved equivalent.

3.04 CURING

A. Concrete shall be cured for at least 72 hours. Curing shall be by means of moist burlap or quilted blankets or other approved methods. During the curing period, all traffic, both pedestrian and vehicular, shall be excluded.

3.05 TESTING

A. Testing of concrete will be performed by an accredited testing agency retained by the Owner.

Methods of sampling, testing, evaluation, and acceptance will conform to ACI 301. The Contractor shall assist the Owner with access to collect samples.

B. Testing as described above will be at the Owner’s discretion and in no way relieves the Contractor of any obligations.

C. The Contractor shall perform its own tests and institute a quality assurance program to assure the specified quality of materials and work are provided.

D. Tests performed by the Owner will be done at no cost to the Contractor, except as noted below.

1. Additional testing and inspection required because of changes in materials, proportions, and procedures requested by the Contractor.

ANNEX EVSE SERVICE 033000 - 4 CD SET

2. Additional testing of materials or concrete when either fails to meet the specification requirements when tested in accordance with the ACI standards outlined and the appropriate ASTM standards contained therein.

END OF SECTION 033000