TECHNOLOGY CENTER WAREHOUSE ADDITION ADMINISTRATIVE SERVICE CENTER MOORE PUBLIC SCHOOLS 1500 S.E. 4 th Street Moore, Oklahoma

Transcription

1 October 2, 2017 ADDENDUM NO. 1, Project: Owner: Architect: TECHNOLOGY CENTER WAREHOUSE ADDITION ADMINISTRATIVE SERVICE CENTER MOORE PUBLIC SCHOOLS 1500 S.E. 4 th Street Moore, Oklahoma Moore Public Schools Moore, Oklahoma The Hodges Group, P.C. 313 S.E. 5 TH Street Moore, Oklahoma, Telephone: (405) Drawings and specifications for the above noted project and the work covered thereby are herein modified as follows, and except as set forth herein, otherwise remain unchanged and in full force and effect. This addendum is part of the bidding documents and modifies the original bidding documents dated Inclusion of the requirements of this Addendum shall be acknowledged by noting its number and date on all proposal and/or contract forms. NOTE: This addendum consists of 5 pages size 8-1/2 x 11 ITEMS TO BE CHANGED: ARCHITECTURAL: 1. Reference Drawings, Sheet A2.1. Pallet racks to be 3-6 deep x 96 tall, 3 shelf standard industrial grade pallet racks similar or equal to wireway Husky, double slotted, Lynx, preconfigured pallet racks as distributed by Global Industrial or equal. Provide wire shelves w/ midpoint braces at all units. 2. Reference Drawings, Sheet A2.1. Moveable shelving to be provided and installed by Owner. 3. Reference Specifications: Section 02300, Earthwork was left out of the specifications. Provide earthwork as per the attached section PLEASE ACKNOWLEDGE RECEIPT OF ADDENDUM ON BID FORM Page 1 of 5

2 Page SECTION EARTHWORK PART 1 GENERAL 1.1 SUMMARY A. Section Includes: 1. Preparation of subgrade for walks, pavements, and other sitework. 2. Rough and finish grading. 3. Excavation for filling and grading. 4. Filling and subgrade preparation. 5. Geotechnical Data B. Related Documents: 1. The Contract Documents, as defined in Section Summary of Work, apply to the Work of this Section. Additional requirements and information necessary to complete the Work of this Section may be found in other Documents. 2. Comply with requirements of Geotechnical report for Pavements. Observation by geotechnical engineer will not be required. 1.2 DEFINITIONS A. Building Area Subgrade Pad: Portion of site directly beneath and within a line 10 feet 0 inches beyond building and appurtenances. 1.3 SUBMITTALS A. Assurance/Control Submittals: 1. Material Source: Submit name of imported materials suppliers. Provide materials from same source throughout the Work. Change of source requires Architect approval. 2. Test Reports: Submit the following reports directly to Architect from Testing Laboratory, with copy to Contractor. Prepare reports in conformance with Section Quality Control: a) Test reports on borrow material. b) Verification of each footing subgrade. c) Field density test reports. d) Optimum moisture-maximum density curve for each type of soil encountered. e) Report of actual unconfined compressive strength and bearing tests/results for each strata tested. Give "three-dimensional" description of each test location. B. Section Closeout Submittals: Procedures for closeout submittals. 1. Project Record Documents: Accurately record final grade contours, spot elevations, and slope gradients. 1.4 PROJECT CONDITIONS OR SITE CONDITIONS A. Existing Conditions: 1. Geotechnical Data: a. Soils investigation reports and data are not a part of Contract Documents. b. Soil and subsurface investigations shall be conducted at site by an Independent Testing Laboratory and a report with log of borings prepared. c. A copy of the report shall be distributed to the Contracting Officer. 2. Existing Utilities: Contact local utility companies and make arrangements to obtain utility company location and marking service prior to start of Earthwork operations.

3 Page a. Locate existing underground utilities in areas of Work. If utilities are to remain in place, provide means of support and protection during Earthwork operations. 1) Pothole and locate existing underground utilities at locations to assure that no conflict with Work of this Contract will occur and required clearance is available to prevent damage to existing utilities. 2) Perform potholing minimum 10 days before start of excavation or underground work. b. Should uncharted, or incorrectly charted, piping or other utilities be encountered during excavation, consult utility company and Contracting Officer immediately for directions. c. Coordinate with Architect and utility companies to keep existing utility services and facilities in operation. d. Repair damaged utilities to satisfaction of utility company, at no additional cost to Owner. PART 2 PRODUCTS 2.1 MATERIALS - The recommendations of the geotoechical investigation shall be reviewed and approved by the Architect if different than the following: A. Subsoil: Approved by Testing Laboratory and Contracting Officer. 1. Satisfactory soil substantially free of organic and unsuitable material. 2. Graded. 3. Free of lumps larger than 3 inches, rocks larger than 2 inches, and debris. 4. Conforming to ASTM D 2487 CL. B. Aggregate: Approved by Testing Laboratory and Contracting Officer. 1. Coarse Gravel: Washed stone; free of shale, clay, friable material and debris; graded in accordance with ASTM D 2487 Group Symbol GW; within the following limits: SIEVE SIZE PERCENT PASSING 2 inches inch 95 3/4 inch 95 to 100 5/8 inch 75 to 100 3/8 inch 55 to 85 No to 60 No to 35 No to 25 No to Pea Gravel: Natural Stone; washed, free of clay, shale, organic matter; graded in accordance with ASTM D 2487 Group Symbol GM; to the following limits: a. Minimum Size: 1/4 inch. b. Maximum Size: 5/8 inch. 3. Fine Sand: Natural river or bank sand; washed; free of silt, clay, loam, friable or soluble materials, and organic matter; graded in accordance with ASTM D 2487 Group Symbol SW; within the following limits: SIEVE SIZE PERCENT PASSING No No to 100 No to 90 No to 30 No C. Topsoil: Approved by Testing Laboratory and Architect. 1. Suitable for specified landscaping. 2. Graded. 3. Free of roots, rocks larger than 1/2 inch, subsoil, debris, large weeds, and foreign matter. 4. Conforming to ASTM D 2487 Group Symbol OH.

4 Page D. Filter/Drainage Fabrics: 1. Mirafi 140NS. 2. Phillips 66 Supac 4NP. 3. DuPont Typar PART 3 EXECUTION 3.1 EXCAVATION FOR FILLING AND GRADING A. Provide dewatering, drainage, and ground water management to control moisture of soils when performing grading operations during periods of wet weather. B. Shore, brace, and drain excavations to maintain excavations safe, secure, and free of water at all times. C. Provide protection for workers within trench areas in accordance with local, State, and Federal Occupational Safety and Health requirements and regulations. 1. Slope, shore, sheet, or brace excavation side walls greater than 5 feet in depth. 2. Provide lateral travel distance to excavation exit ladder or steps maximum 25 feet for trenches minimum 4 feet in depth. D. Unacceptable Fill Material for Building and Paving Areas: Excavated material containing rock or stone greater than 6 inches in largest dimension. E. Acceptable Fill Material: 1. Rock or stone less than 6 inches in largest dimension as fill to within 24 inches of surface of proposed subgrade when mixed with suitable material. 2. Rock or stone less than 2 inches in largest dimension mixed with suitable material as fill within the upper 24 inches of proposed subgrade. 3.2 FILLING AND SUBGRADE PREPARATION A. Fill areas to contours and elevations with materials specified herein. B. Place fill in continuous lifts as specified herein. C. Refer to Section for filling requirements for structures, utilities, and pavements. D. Areas Exposed by Excavation or Stripping: 1. Scarify areas exposed by excavation or stripping on which building subgrade preparations are to be performed to minimum 8 inch depth. 2. Compact to minimum 98 percent optimum density in accordance with ASTM D 698 at minimum moisture content 1 percent below and maximum 3 percent above optimum moisture content. 3. Proofroll to detect any areas of insufficient compaction by making minimum of 2 complete passes with fully-loaded tandem-axle dump truck, or Contracting Officer approved equivalent, in each of two perpendicular directions under supervision and direction of Testing Laboratory and Contracting Officer. 4. Excavate and recompact areas failing to meet specified requirements. E. Fill Material Placement: 1. Place in 8 inch maximum lifts compacted minimum 98 percent optimum density in accordance with ASTM D 698 at minimum moisture content of 1 percent below and maximum moisture content 3 percent above optimum moisture content. F. Provide material imported from off-site with CBR (California Bearing Ratio) or LBR (Limerock Bearing Ratio) value equal to or above pavement design subgrade CBR or LBR value.

5 Page MAINTENANCE OF SUBGRADE A. Verify finished subgrades for conformance to elevations and for specified conditions for subgrade. B. Protect subgrade from excessive wheel loading during construction, including concrete trucks and dump trucks. C. Remove areas of finished subgrade with compaction density below specified density to depth required as directed by Testing Laboratory and Contracting Officer. Fill removed areas and compact to specified compaction density D Provide surface of subgrade after compaction hard, uniform, smooth, stable, and true to grade and cross-section. 3.4 FINISH GRADING A. Grade areas other than paved areas and building pad areas to finish grade elevations or contours including the following: 1. Excavated areas. 2. Filled and transition areas. 3. Landscaped areas. B. Provide finish graded areas uniform and smooth, free from clods, rocks, debris, or irregular surface changes with maximum tolerance of 0.10 feet above or below established finish subgrade elevation. Provide graded surfaces sloping uniformly between indicated elevations. C. Provide drainage ditches graded with uniform slope to allow drainage without ponding, minimizing potential for erosion. Refer to Section for procedures to protect slopes and control erosion. D. Refer to Section for soil stabilization using lime, cement, fly ash and geotextile fabric methods for subbase materials. E. Refer to Section for placing topsoil and fine grading in landscaped areas. END OF SECTION