CONCRETE
<br />REFERENCE DRAWINGS
<br />16. Concrete cover for reinforcement shall be as follows, subject to the
<br />tolerances of
<br />BY
<br />JLK
<br />APP BY
<br />VENTILATION
<br />MECHANICAL
<br />ACI 117, unless noted otherwise:
<br />ENGR: JLK
<br />DRAWN BY: JP
<br />1. Material and workmanship
<br />shall be in accordance with the requirements of the
<br />A. Concrete poured against earth ....................... ...............................
<br />3"
<br />American Concrete Institute
<br />"Building Code Requirements for Reinforced Concrete"
<br />B. Concrete poured in forms but exposed to weather or earth
<br />(ACI 318, latest
<br />edition),
<br />and "Specifications for Structural Concrete" (ACI 301,
<br />(1.) #5 bars or smaller ............................... ...............................
<br />1 1/2"
<br />latest edition).
<br />2 -28 -19-
<br />(2.) Bars larger than # 5 ............................. ...............................
<br />2 "
<br />2. All cement shall
<br />conform
<br />to ASTM C 150. All fly ash and natural pozzolans shall
<br />C. Columns, girders and beams (principal reinforcement, ties and
<br />conform to ASTM C 618.
<br />All aggregates shall conform to ASTM C 33 (NW) and /or
<br />stirrups) ............ ............................... ................. ...............................
<br />.. 1 1/2"
<br />C 330 (LW), as
<br />applicable. Water shall conform to ASTM C 1602.
<br />D. Slabs and walls .................................................. ............................... 3/4"
<br />3. Concrete mixes
<br />shall conform to the following, unless noted otherwise:
<br />17. See building design, mechanical and electrical drawings for additional
<br />openings,
<br />PIPING
<br />f c at
<br />Unit
<br />Cement
<br />Max.
<br />% Air
<br />Durabilit Ex
<br />osure Class
<br />depressions, curbs, floor finishes, inserts and other embedded items.
<br />SCALE: AS NOTED
<br />Intended Use
<br />28 day
<br />Weight
<br />Type
<br />w cm
<br />Content-Fr-z.75awlSulfatel
<br />Perm.
<br />lCorrosion
<br />18. Where other reinforcing is not required by the drawings, (2) #5 bars
<br />shall be
<br />Footings
<br />4.5 ksil
<br />NW
<br />V*
<br />0.45
<br />1 2 -4
<br />F1
<br />S2
<br />PO
<br />C1
<br />located at all sides of, and adjacent to, every opening that exceeds
<br />24" in either
<br />Foundation Walls
<br />4.5 ksil
<br />NW
<br />V*
<br />0.45
<br />1 4 -6
<br />F1
<br />S2
<br />PO
<br />C1
<br />direction. Extend bars 24" beyond each side of opening.
<br />4.
<br />5.
<br />6.
<br />7.
<br />8.
<br />9.
<br />10.
<br />11.
<br />12.
<br />13.
<br />14.
<br />15.
<br />* Cement Type 1 /II, with 20% fly ash or other ozzolan additives, conforming to ACI
<br />requirements for comparable sulfate resistance t ee.g. C3A content less than 5 %)
<br />and approved by Climax /Henderson, may be substituted for Type V cement.
<br />Mixes shall comply with all durability requirements specified in Chapter 4 of
<br />ACI -318, based on the specified exposure class. If discrepancies exist between
<br />Chapter 4 and the above table, the most stringent requirements shall govern.
<br />All concrete shall have a minimum cement content of 540 lbs. per cubic yard,
<br />unless noted otherwise. If fly ash is used, then it shall comprise no less than 15%
<br />and no more than 25% of cementitious material. Maximum aggregate size is 3/4 ",
<br />unless noted otherwise.
<br />Calcium Chloride shall not be added to concrete.
<br />Reinforcing bars shall be deformed bars and shall conform to ASTM A 615, Grade
<br />60, unless noted otherwise. All stirrups and column ties shall conform to ASTM A
<br />615, Grade 40. Weldable reinforcement shall conform to ASTM A 706, Grade 60.
<br />Reinforcing bars shall be detailed on the shop drawings in accordance with the
<br />American Concrete Institute "ACI Detailing Manual" (ACI SP -66, latest edition),
<br />unless noted otherwise.
<br />Welded wire fabric shall conform to ASTM A 185, shall lap a minimum of one full
<br />mesh plus 2 inches at side and end laps, and shall be securely wired together,
<br />unless noted otherwise.
<br />Cast -in -place steel anchor bolts shall conform to ASTM F 1554, Grade 36, unless
<br />noted otherwise.
<br />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 />Bar supports, chairs, spacers and rebar 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 />Bar supports, chairs and spacers which rest on or against an exposed surface shall
<br />be hot - dipped galvanized.
<br />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.14. 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 />Where lap splice locations of horizontal bars are not specifically noted on the
<br />drawings, lap splices are to be staggered.
<br />FOUNDATION & SOILS
<br />1. Foundations are designed using presumed bearing values noted below. Contractor shall
<br />provide written open excavation inspection report by a Geotechical Professional
<br />Engineer prior to forming or placing foundation concrete. Foundation system is subject
<br />to change based on report findings. Contractor shall follow all recommendations of
<br />report, including modifying the foundation system in accordance with a revised design.
<br />2. All footings shall rest on solid undisturbed soil or approved compacted fill. Assumed
<br />maximum design bearing capacity (D +L) is 5,000 psf.
<br />3. All footings shall be the exact size and shape as shown on the structural drawings;
<br />no larger, no smaller.
<br />4. No footings or foundation walls shall be poured before observation by the Engineer.
<br />5. No concrete shall be poured in excavation containing water or on frozen ground.
<br />6. Backfill shall be placed against both sides of walls and piers simultaneously. Use only
<br />hand operated tools for compaction adjacent to foundation walls. Do not backfill until
<br />stem walls have cured a minimum of 7 days.
<br />7. Backfill soils placed against new foundations and stemwalls shall consist of native
<br />or imported granular rock /soil mixes compacted to at least 95% standard Proctor
<br />density, or as recommended by the Geotechnical Professional Engineer during construction
<br />and approved by Henderson.
<br />8. Backfill soils placed against existing stemwalls, which contact new steel, shall consist
<br />of imported clean gravel or similar free draining materials, compacted to 100% Proctor
<br />for support of the RCP bearing on it. Alternate materials subject to approval by
<br />Henderson. Prior to backfilling against existing stemwalls /pedestals, a permanent
<br />gravity drainage path shall be provided to Prevent ponding of water against steel.
<br />Drainage path may consist of perforated 6' drain pipe or equivalent systems which
<br />daylights downstream. Submit proposed construction method to Henderson for review.
<br />DWG. NO.
<br />REFERENCE DRAWINGS
<br />DESCRIPTION OF REVISION
<br />ISSUED FOR BID WALK
<br />DATE
<br />2 -28 -14
<br />BY
<br />JLK
<br />APP BY
<br />VENTILATION
<br />MECHANICAL
<br />ENGR: JLK
<br />DRAWN BY: JP
<br />2 -28 -14
<br />2 -28 -14
<br />HENDERSON OPERATIONS
<br />7 �ClimaxMolybdenum
<br />} ='
<br />A Freeport-McMoRan Company
<br />EMPIRE /PARSHALL, COLORADO
<br />303- 569-3221
<br />HENDERSON MILL
<br />TAILINGS DROP LINE
<br />CONCRETE AND FOUNDATION
<br />NOTES
<br />STRUCTURAL
<br />CHECKED BY: JCB
<br />2 -28 -19-
<br />ELECTRICAL
<br />APPROVED BY:
<br />PIPING
<br />APPROVED BY:
<br />SCALE: AS NOTED
<br />OTHER APP BY:
<br />PROJ. NO 13024 SHT S02 REV.
<br />
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