For Removal and Replacement of Facility Fencing at DOT’s...
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Purchasing Section P: 515-239-1310 F: 515-239-1538 800 Lincoln Way, Ames, Iowa 50010 [email protected] April 8, 2019 ADDENDUM NO.2 to the Iowa Department of Transportation Proposal No. 21985 For Removal and Replacement of Facility Fencing at DOT’s Burlington and Mt. Pleasant Facilities Date: April 17, 2019 Notice To Bidders: This Addendum is issued to incorporate the following additions, deletions, corrections, and/or clarifications to the terms or specifications and shall hereby be considered a part of the final contract documents. This Addendum shall supersede, modify and/or change all statements to the contrary in the bid proposal and shall take precedence over previous terms or specifications. Corrections: West Burlington Specification changes: Section 32 3113 Chain Link Fence 1.01Section Includes Delete: C. Barbed Wire 2.01 Materials A. Posts, Rails, and Frames: Added B. Formed from hot-dipped galvanized steel sheet, ASTM A653/A653M, HSLAS, Grade 50, with G90 (Z275) zinc coating. Added C. Line Posts: Type I round. Added D. Terminal, Corner, Rail, Brace, and Gate Posts: Type I round. Added E. Wire Fabric Added F. ASTM A392 zinc coated steel chain link fabric. 2.02 Components Changed E. Fabric: 2-inch diamond mesh interwoven wire, 9 gage, 0.1144 inch thick, top selvage knuckle end closed, bottom selvage twisted tight. Changed F. Tension Wire: 6 gage, 0.1620 inch thick steel, single strand. 2.01 Finishes Changed A. Components (Other than Fabric): Galvanized in accordance with ASTM A123/A123M, at 1.7 oz/sq ft.
Transcript of For Removal and Replacement of Facility Fencing at DOT’s...
Purchasing Section P: 515-239-1310 F: 515-239-1538 800 Lincoln Way, Ames, Iowa 50010 [email protected]
April 8, 2019 ADDENDUM NO.2
to the Iowa Department of Transportation
Proposal No. 21985 For Removal and Replacement of Facility Fencing at DOT’s Burlington and Mt.
Pleasant Facilities Date: April 17, 2019
Notice To Bidders: This Addendum is issued to incorporate the following additions, deletions, corrections, and/or clarifications to the terms or specifications and shall hereby be considered a part of the final contract documents. This Addendum shall supersede, modify and/or change all statements to the contrary in the bid proposal and shall take precedence over previous terms or specifications.
Corrections:
West Burlington Specification changes:
Section 32 3113 Chain Link Fence
1.01 Section Includes
Delete: C. Barbed Wire
2.01 Materials
A. Posts, Rails, and Frames:
Added B. Formed from hot-dipped galvanized steel sheet, ASTM A653/A653M, HSLAS,
Grade 50, with G90 (Z275) zinc coating.
Added C. Line Posts: Type I round.
Added D. Terminal, Corner, Rail, Brace, and Gate Posts: Type I round.
Added E. Wire Fabric
Added F. ASTM A392 zinc coated steel chain link fabric.
2.02 Components
Changed E. Fabric: 2-inch diamond mesh interwoven wire, 9 gage, 0.1144 inch thick,
top selvage knuckle end closed, bottom selvage twisted tight.
Changed F. Tension Wire: 6 gage, 0.1620 inch thick steel, single strand.
2.01 Finishes
Changed A. Components (Other than Fabric): Galvanized in accordance with ASTM
A123/A123M, at 1.7 oz/sq ft.
Purchasing Section P: 515-239-1310 F: 515-239-1538 800 Lincoln Way, Ames, Iowa 50010 [email protected]
West Burlington Drawing changes
Sheet A-1 Added Note: “6. EXISTING NORTH FENCE TO REMAIN”
Sheet A-1 Added Note: “7. NO DEMOLITION AT THIS SITE”
Sheet A-1 Added to note EXISTING FENCE TO REMAIN
Mt Pleasant Specification Changes:
Section 32 3113 Chain Link Fence
1.02 Section Includes
Delete: C. Barbed Wire
2.01 Materials
A. Posts, Rails, and Frames:
Added B. Formed from hot-dipped galvanized steel sheet, ASTM A653/A653M, HSLAS,
Grade 50, with G90 (Z275) zinc coating.
Added C. Line Posts: Type I round.
Added D. Terminal, Corner, Rail, Brace, and Gate Posts: Type I round.
Added E. Wire Fabric
Added F. ASTM A392 zinc coated steel chain link fabric.
2.02 Components
Changed E. Fabric: 2-inch diamond mesh interwoven wire, 9 gage, 0.1144 inch thick,
top selvage knuckle end closed, bottom selvage twisted tight.
Changed F. Tension Wire: 6 gage, 0.1620 inch thick steel, single strand.
2.01 Finishes
Changed A. Components (Other than Fabric): Galvanized in accordance with ASTM
A123/A123M, at 1.7 oz/sq ft.
Mt Pleasant Drawing Changes
Sheet A-1 Added Note: “6. NO DEMOLITION AT THIS SITE”
Sheet A-1 Added Note: “7. AREA NOTED 5.5 ACRES SUBJECT TO SURVEY NOT INCLUDED IN
CONTRACT”
All Bidders must sign and return this Addendum for the bid opportunity referenced above. Failure to do so may subject the Bidder to disqualification. If a bid response has already been submitted, this Addendum shall be signed and emailed or faxed to the Purchasing Section prior to the scheduled solicitation response date. _________________________________ _________________________________ Company Name (please print) Date
_________________________________ Signature Sincerely, Jody McNaughton, Purchasing Agent Phone No. 515-239-1298 Fax No. 515-239-1538 [email protected]
BG-9B10(002)--80-29 / WestBurlington Fence
32 3113 - 1 CHAIN LINK FENCES ANDGATES
SECTION 32 3113CHAIN LINK FENCES AND GATES
PART 1 GENERAL1.01 SECTION INCLUDES
A. Posts, rails, and frames.B. Wire fabric.C. Accessories.
1.02 REFERENCE STANDARDSA. ASTM A123/A123M - Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and
Steel Products; 2015.B. ASTM A153/A153M - Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel
Hardware; 2016a.C. ASTM A392 - Standard Specification for Zinc-Coated Steel Chain-Link Fence Fabric; 2011a.D. ASTM A653/A653M - Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or
Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process; 2015.E. ASTM C94/C94M - Standard Specification for Ready-Mixed Concrete; 2015.F. ASTM F567 - Standard Practice for Installation of Chain-Link Fence; 2014a.G. ASTM F668 - Standard Specification for Polyvinyl Chloride (PVC) and Other Organic
Polymer-Coated Steel Chain-Link Fence Fabric; 2011.H. ASTM F1083 - Standard Specification for Pipe, Steel, Hot-Dipped Zinc-Coated (Galvanized)
Welded, for Fence Structures; 2013.I. ASTM F1665 - Standard Specification for Poly(Vinyl Chloride)(PVC) and Other Conforming
Organic Polymer-Coated Steel Barbed Wire Used with Chain-Link Fence; 2008 (Reapproved2013).
J. CLFMI CLF-SFR0111 - Security Fencing Recommendations; 2014.1.03 SUBMITTALS
A. See Section 01 3000 - Administrative Requirements, for submittal procedures.B. Product Data: Provide data on fabric, posts, accessories, fittings and hardware.C. Shop Drawings: Indicate plan layout, spacing of components, post foundation dimensions,
hardware anchorage, and schedule of components. See CLFMI CLF-SFR0111 for planningand design recommendations.
1.04 QUALITY ASSURANCEA. Manufacturer Qualifications: Company specializing in manufacturing products specified in this
section, with not less than three years of documented experience.PART 2 PRODUCTS2.01 MATERIALS
A. Posts, Rails, and Frames:B. Formed from hot-dipped galvanized steel sheet, ASTM A653/A653M, HSLAS, Grade 50, with
G90 (Z275) zinc coating.C. Line Posts: Type I round.D. Terminal, Corner, Rail, Brace, and Gate Posts: Type I round.E. Wire Fabric:F. ASTM A392 zinc coated steel chain link fabric.G. Concrete: Ready-mixed, complying with ASTM C94/C94M; normal Portland cement; 2,500 psi
strength at 28 days, 3 inch slump.
BG-9B10(002)--80-29 / WestBurlington Fence
32 3113 - 2 CHAIN LINK FENCES ANDGATES
2.02 COMPONENTSA. Line Posts: 1.9 inch diameter.B. Corner and Terminal Posts: 2.38 inch diameter.C. Gate Posts: 6.63 inch diameter.D. Top and Brace Rail: 1.66 inch diameter, plain end, sleeve coupled.E. Fabric: 2 inch diamond mesh interwoven wire, 9 gage, 0.1144 inch thick, top selvage knuckle
end closed, bottom selvage twisted tight.F. Tension Wire: 6 gage, 0.1620 inch thick steel, single strand.G. Tie Wire: Aluminum alloy steel wire.
2.03 ACCESSORIESA. Caps: Cast steel galvanized; sized to post diameter, set screw retainer.B. Fittings: Sleeves, bands, clips, rail ends, tension bars, fasteners and fittings; steel.C. Extension Arms: Cast steel galvanized, to accommodate 3 strands of barbed wire, single arm,
vertical.2.04 FINISHES
A. Components (Other than Fabric): Galvanized in accordance with ASTM A123/A123M, at 1.7oz/sq ft.
B. Hardware: Hot-dip galvanized to weight required by ASTM A153/A153M.C. Accessories: Same finish as framing.
PART 3 EXECUTION3.01 INSTALLATION
A. Install framework, fabric, accessories and gates in accordance with ASTM F567.B. Place fabric on outside of posts and rails.C. Set intermediate posts plumb, in concrete footings with top of footing 2 inches above finish
grade. Slope top of concrete for water runoff.D. Line Post Footing Depth Below Finish Grade: ASTM F567.E. Corner, Gate and Terminal Post Footing Depth Below Finish Grade: ASTM F567.F. Brace each gate and corner post to adjacent line post with horizontal center brace rail. Install
brace rail one bay from end and gate posts.G. Provide top rail through line post tops and splice with 6 inch long rail sleeves.H. Install center brace rail on corner gate leaves.I. Do not stretch fabric until concrete foundation has cured 28 days.J. Stretch fabric between terminal posts or at intervals of 100 feet maximum, whichever is less.K. Position bottom of fabric 2 inches above finished grade.L. Fasten fabric to top rail, line posts, braces, and bottom tension wire with tie wire at maximum 15
inches on centers.M. Attach fabric to end, corner, and gate posts with tension bars and tension bar clips.N. Install bottom tension wire stretched taut between terminal posts.O. Do not attach the hinged side of gate to building wall; provide gate posts.P. Provide concrete center drop to footing depth and drop rod retainers at center of double gate
openings.3.02 TOLERANCES
A. Maximum Variation From Plumb: 1/4 inch.
BG-9B10(002)--80-29 / WestBurlington Fence
32 3113 - 3 CHAIN LINK FENCES ANDGATES
B. Maximum Offset From True Position: 1 inch.C. Do not infringe on adjacent property lines.
END OF SECTION
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NOTES:1. PROVIDE 18" DIA. X 4'-0" DEEPCONCRETE PIER FOR POSTS 6" O.D.
2. PROVIDE 24" DIA X 4'-0" DEEPCONCRETE PIER FOR POSTS 8" O.D.OR LESS
3. PROVIDE 12" DIA X 4'-0" DEEPCONCRETE PIERS FOR POSTS 4" O.D.OR LESS
4. DOT WILL PROVIDE SIGNS AT ALLGATE LOCATIONS
5. NEEDS ON SITE VERIFICATION OFMEASUREMENTS, GATE PLACEMENT, AND FENCE LOCATION.
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Architect
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Architect
6. EXISTING NORTH FENCE TO REMAIN 7. NO DEMOLITION AT THIS SITE
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BG-9M30(002)--80-44 / MountPleasant Fence
32 3113 - 1 CHAIN LINK FENCES ANDGATES
SECTION 32 3113CHAIN LINK FENCES AND GATES
PART 1 GENERAL1.01 SECTION INCLUDES
A. Posts, rails, and frames.B. Wire fabric.C. Accessories.
1.02 REFERENCE STANDARDSA. ASTM A123/A123M - Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and
Steel Products; 2015.B. ASTM A153/A153M - Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel
Hardware; 2016a.C. ASTM A392 - Standard Specification for Zinc-Coated Steel Chain-Link Fence Fabric; 2011a.D. ASTM A653/A653M - Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or
Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process; 2015.E. ASTM C94/C94M - Standard Specification for Ready-Mixed Concrete; 2015.F. ASTM F567 - Standard Practice for Installation of Chain-Link Fence; 2014a.G. ASTM F668 - Standard Specification for Polyvinyl Chloride (PVC) and Other Organic
Polymer-Coated Steel Chain-Link Fence Fabric; 2011.H. ASTM F1083 - Standard Specification for Pipe, Steel, Hot-Dipped Zinc-Coated (Galvanized)
Welded, for Fence Structures; 2013.I. ASTM F1665 - Standard Specification for Poly(Vinyl Chloride)(PVC) and Other Conforming
Organic Polymer-Coated Steel Barbed Wire Used with Chain-Link Fence; 2008 (Reapproved2013).
J. CLFMI CLF-SFR0111 - Security Fencing Recommendations; 2014.1.03 SUBMITTALS
A. See Section 01 3000 - Administrative Requirements, for submittal procedures.B. Product Data: Provide data on fabric, posts, accessories, fittings and hardware.C. Shop Drawings: Indicate plan layout, spacing of components, post foundation dimensions,
hardware anchorage, and schedule of components. See CLFMI CLF-SFR0111 for planningand design recommendations.
1.04 QUALITY ASSURANCEA. Manufacturer Qualifications: Company specializing in manufacturing products specified in this
section, with not less than three years of documented experience.PART 2 PRODUCTS2.01 MATERIALS
A. Posts, Rails, and Frames:B. Formed from hot-dipped galvanized steel sheet, ASTM A653/A653M, HSLAS, Grade 50, with
G90 (Z275) zinc coating.C. Line Posts: Type I round.D. Terminal, Corner, Rail, Brace, and Gate Posts: Type I round.E. Wire Fabric:F. ASTM A392 zinc coated steel chain link fabric.G. Concrete: Ready-mixed, complying with ASTM C94/C94M; normal Portland cement; 2,500 psi
strength at 28 days, 3 inch slump.
BG-9M30(002)--80-44 / MountPleasant Fence
32 3113 - 2 CHAIN LINK FENCES ANDGATES
2.02 COMPONENTSA. Line Posts: 1.9 inch diameter.B. Corner and Terminal Posts: 2.38 inch diameter.C. Gate Posts: 6.63 inch diameter.D. Top and Brace Rail: 1.66 inch diameter, plain end, sleeve coupled.E. Fabric: 2 inch diamond mesh interwoven wire, 9 gage, 0.1144 inch thick, top selvage knuckle
end closed, bottom selvage twisted tight.F. Tension Wire: 6 gage, 0.1620 inch thick steel, single strand.G. Tie Wire: Aluminum alloy steel wire.
2.03 ACCESSORIESA. Caps: Cast steel galvanized; sized to post diameter, set screw retainer.B. Fittings: Sleeves, bands, clips, rail ends, tension bars, fasteners and fittings; steel.C. Extension Arms: Cast steel galvanized, to accommodate 3 strands of barbed wire, single arm,
vertical.2.04 FINISHES
A. Components (Other than Fabric): Galvanized in accordance with ASTM A123/A123M, at 1.7oz/sq ft.
B. Hardware: Hot-dip galvanized to weight required by ASTM A153/A153M.C. Accessories: Same finish as framing.
PART 3 EXECUTION3.01 INSTALLATION
A. Install framework, fabric, accessories and gates in accordance with ASTM F567.B. Place fabric on outside of posts and rails.C. Set intermediate posts plumb, in concrete footings with top of footing 2 inches above finish
grade. Slope top of concrete for water runoff.D. Line Post Footing Depth Below Finish Grade: ASTM F567.E. Corner, Gate and Terminal Post Footing Depth Below Finish Grade: ASTM F567.F. Brace each gate and corner post to adjacent line post with horizontal center brace rail ______.
Install brace rail one bay from end and gate posts.G. Provide top rail through line post tops and splice with 6 inch long rail sleeves.H. Install center brace rail on corner gate leaves.I. Do not stretch fabric until concrete foundation has cured 28 days.J. Stretch fabric between terminal posts or at intervals of 100 feet maximum, whichever is less.K. Position bottom of fabric 2 inches above finished grade.L. Fasten fabric to top rail, line posts, braces, and bottom tension wire with tie wire at maximum 15
inches on centers.M. Attach fabric to end, corner, and gate posts with tension bars and tension bar clips.N. Install bottom tension wire stretched taut between terminal posts.O. Do not attach the hinged side of gate to building wall; provide gate posts.P. Provide concrete center drop to footing depth and drop rod retainers at center of double gate
openings.3.02 TOLERANCES
A. Maximum Variation From Plumb: 1/4 inch.
BG-9M30(002)--80-44 / MountPleasant Fence
32 3113 - 3 CHAIN LINK FENCES ANDGATES
B. Maximum Offset From True Position: 1 inch.C. Do not infringe on adjacent property lines.
END OF SECTION
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Architect
6. NO DEMOLITION AT THIS SITE 7. AREA NOTED 5.5 ACRES SUBJECT TO SURVEY NOT INCLUDED IN CONTRACT
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Architect
