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CONCRETE 16. Concrete cover for reinforcement shall be as follows, subject to the tolerances of
<br /> ACI 117, unless noted otherwise:
<br /> 1. Material and workmanship shall be in accordance with the requirements of the A. Concrete poured against earth ...................................................... 3"
<br /> American Concrete Institute "Building Code Requirements for Reinforced Concrete" B. Concrete poured in forms but exposed to weather or earth
<br /> (ACI 318, latest edition), and "Specifications for Structural Concrete" (ACI 301, (1.) #5 bars or smaller.............................................................. 1 1/2"
<br /> latest edition). (2.) Bars larger than #5............................................................ 2"
<br /> 2. All cement shall conform to ASTM C 150. All fly ash and natural pozzolans shall C. Columns, girders and beams (principal reinforcement, ties and
<br /> conform to ASTM C 618. All aggregates shall conform to ASTM C 33 (NW) and/or stirrups)............................................................................................. 1 1/2"
<br /> C 330 (LW), as applicable. Water shall conform to ASTM C 1602. D. Slabs and walls................................................................................. 3/4"
<br /> 3. Concrete mixes shall conform to the following, unless noted otherwise: 17. See building design, mechanical and electrical drawings for additional openings,
<br /> f c at Unit emen Max. % Air DurabilityExposure Class depressions, curbs, floor finishes, inserts and other embedded items.
<br /> Intended Use 8 da Weight T e w cm ontentFrz awSulfate I Perm.lCorrosion 18. Where other reinforcing is not required by the drawings, (2) #5 bars shall be
<br /> Footings 14.5 ksil NW I V* 1 0.45 4-6 F1 1 52 1PO C1 located at all sides of, and adjacent to, every opening that exceeds 24" in either
<br /> Foundation Walls 14.5 ksil NW I V* 1 0.45 4-6 F1 I S2 IPO Ct direction. Extend bars 24" beyond each side of opening.
<br /> * Cement Type 1/11, with 20% fly ash or other ozzolan additives, conforming to ACI
<br /> requirements for comparable sulfate resistance e.g. C3A content less than 5%) FOUNDATION & SOILS
<br /> and approved by Climax/Henderson, may be substituted for Type V cement.
<br /> 4. Mixes shall comply with all durability requirements specified in Chapter 4 of ACI-318, based on the specified exposure class. If discrepancies exist between 1. Foundations are designed using presumed bearing values noted below. Contractor shall
<br /> Chapter 4 and the above table, the most stringent requirements shall govern. provide written open excavation inspection report by a Geotechical Professional
<br /> 5. All concrete shall have a minimum cement content of 540 lbs. per cubic yard, Engineer prior to forming or placing foundation concrete. Foundation system is subject
<br /> unless noted otherwise. If fly ash is used, then it shall comprise no less than 15% to change based on report findings. Contractor shall follow all recommendations of
<br /> and no more than 25% of cementitious material. Maximum aggregate size is 3/4", report, including modifying the foundation system in accordance with a revised design.
<br /> unless noted otherwise. 2. All footings shall rest on solid undisturbed soil or approved compacted fill. Assumed
<br /> 6. Calcium Chloride shall not be added to concrete. maximum design bearing capacity (D+L) is 5,000 psf.
<br /> 7. Reinforcing bars shall be deformed bars and shall conform to ASTM A 615, Grade 3. All footings shall be the exact size and shape as shown on the structural drawings;
<br /> 60, unless noted otherwise. All stirrups and column ties shall conform to ASTM A no larger, no smaller.
<br /> 615, Grade 40. Weldable reinforcement shall conform to ASTM A 706, Grade 60. 4. No footings or foundation walls shall be poured before observation by the Engineer.
<br /> 8. Reinforcing bars shall be detailed on the shop drawings in accordance with the 5. No concrete shall be poured in excavation containing water or on frozen ground.
<br /> American Concrete Institute "ACI Detailing Manual" (ACI SP-66, latest edition), 6. Backfill shall be placed against both sides of walls and piers simultaneously. Do not
<br /> unless noted otherwise. backfill until stem walls have cured a minimum of 7 days.
<br /> 9. Welded wire fabric shall conform to ASTM A 185, shall lap a minimum of one full 7. Backfill placed at both new and existing concrete stem walls consisted of flow fill,
<br /> mesh plus 2 inches at side and end laps, and shall be securely wired together, low strength concrete mix, ID 645209D as provided by Everist Materials, LLC.
<br /> unless noted otherwise.
<br /> 10. Cast-in-place steel anchor bolts shall conform to ASTM F 1554, Grade 36, unless
<br /> noted otherwise.
<br /> 11. Bar bending details and placing drawings shall be in accordance with the "Manual of
<br /> Standard Practice for Detailing Reinforced Concrete Structures" (ACI 315, latest
<br /> edition).
<br /> 12. Bar supports, chairs, spacers and rebor positioners shall be used to place all bars
<br /> in the exact location specified on the drawings. Wire adequately at intersections to
<br /> hold bars firmly in position while concrete is placed.
<br /> 13. Bar supports, chairs and spacers which rest on or against an exposed surface shall
<br /> be hot-dipped galvanized.
<br /> 14. Continuous bars shall lap and dowels shall project adequately to provide a Class B
<br /> splice, but not less than 12 inches, unless noted otherwise. Stirrups, ties, footing
<br /> dowels and cantilevered reinforcement shall terminate in a standard hook at the
<br /> free end(s) of the bar, unless noted otherwise.
<br /> 15. Where lap splice locations of horizontal bars are not specifically noted on the
<br /> drawings, lap splices are to be staggered.
<br /> DWG.NO. REFERENCE DRAWINGS DESCRIPTION OF REVISION DATE BY VENTILATION ENGR: JLK 2-28-14 �CIfn18XMolybdenum HENDERSON MILL
<br /> MECHANICAL DRAWN BY: JP 2-2�14 TAILINGS DELIVERY LINE
<br /> a RECORD SET OF CONSTRUCTION COMPLETED IN 2015 0"3.15 JLK STRUCTURAL CHECKED BY: JOB 2-2a.0 A FgQ10R-YM "C
<br /> ELECTRICAL APPROVED BY: "�` OP"0° CONCRETE AND FOUNDATION
<br /> PIPING APPROVED- I BAUR6LASS(X:IATES NOTES
<br /> SCALE: AS NOTEDI OTHER APP BY: It-0 K5t til+r,p��,"o.E1ts PRO N0.13021 ISHT S02 REV.
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