ADDENDUM NO. 3 February 28, 2017

Transcription

1 ADDENDUM NO. 3 February 28, 2017 Project: From: To: Grimsley High School Auditorium Roof Replacement 801 Westover Terrace Greensboro, North Carolina Terracon Consultants, Inc G West Friendly Avenue Greensboro, North Carolina (336) FAX (336) Prospective Bidders This Addendum forms a part of the Contract Documents and modifies the original Bidding Documents dated October 28, 2016, as noted below. Acknowledge receipt of this Addendum by writing its number and date on the Bid Form. Failure to do so may subject the bidder to disqualification. This Addendum consists of three pages, new Bid Form, and five new Sketches with a date of 02/28/17. CHANGES TO PRIOR ADDENDA Item 1 Addendum 2, Item 3: Delete Alternate 3. CHANGES TO BIDDING REQUIREMENTS Advertisement for Bids Bid Form Item 2 Replace existing Bid Form with new Bid Form, enclosed with this Addendum. CHANGES TO SPECIFICATIONS Section Styrene-Butadiene-Styrene (SBS) Modified Bituminous Membrane Roofing Item 3 Change Paragraph 2.6.A, to read as follows: A. TPO Sheet: ASTM D 6878, internally fabric- or scrim-reinforced, uniform, flexible. Item 4 Change Paragraph 2.8.A, to read as follows: A. Retrofit Drains: Stainless steel or spun aluminum drain body and pipe extension with mechanical seal and stainless steel or cast aluminum dome strainer. Zurn RD2150 or equivalent by Marathon Roofing Products, OMG Roofing Products, or Trufast.

2 Item 5 Add Paragraph 2.8.C, to read as follows: C. Gravity Ventilator: Spun aluminum, non-motorized, size to fit over removed existing ventilator, with bird screen and 12 inch high insulated aluminum curb. Section Sheet Metal Flashing and Trim Item 6 Item 7 Paragraph 2.2.D: Change Title From: PVC Coated Steel Sheet, To: TPO Coated Steel Sheet. Change PVC to TPO in body of Paragraph. Subparagraph 2.2.D.1: Change PVC to TPO. CHANGES TO DRAWINGS Sheet A-101 Roof Plan Item 8 Add General Note, to read as follows: 3. Access to roof during construction is only from the exterior. Workers will not be allowed to use the existing roof hatch located on an adjacent roof. Item 9 Add Construction Note, to read as follows: 3. Contractor is responsible for unmounting electrical conduit and light fixtures during roofing and remounting in a similar location. If disconnection from electrical service is required, use a licensed electrician. Sheet A Roof Details Item 10 Item 11 Replace Detail 1/A-501 with new Detail as shown on Sketch No. 1, enclosed with this Addendum. Detail 3/A-501: Add General Note, to read as follows: At Contractors option, an 8 x 8 inch hole may be cut through the solid masonry wall and a scupper liner installed as shown on Detail 4/A-501. Item 12 Item 13 Detail 4/A-501: This detail is for the existing scuppers. Detail 5/A-501: Change Note New Roof Drain Strainer to read New Retrofit Drain. Change Note New Roof Drain Bowl to read Existing Roof Drain Bowl. Delete note New Roof Drain Extension if required. Sheet A Roof Details Item 14 Item 15 Replace Detail 3/A-502 with new Detail as shown on Sketch No. 2, enclosed with this Addendum. Replace Detail 5/A-502 with new Detail as shown on Sketch No. 3, enclosed with this Addendum. Addendum No. 3 Grimsley High School Auditorium Page 2 of 3 February 28, 2017 Roof Replacement FJ166049

3 Item 16 Add New Detail 6/A-502 as shown on Sketch No. 4, enclosed with this Addendum. Sheet A Roof Details Item 17 Detail 1/A-503: Change note Alternate #1 to say Alternate #2. Item 18 Detail 3/A-503: Change note Alternate #1 to say Alternate #2. Item 19 Replace Detail 4/A-503 with new Detail as shown on Sketch No. 5, enclosed with this Addendum. END OF ADDENDUM Addendum No. 3 Grimsley High School Auditorium Page 3 of 3 February 28, 2017 Roof Replacement FJ166049

4 BID FORM Contractor Initials & Date Contract: Project: Bidder: Single Prime Contract Grimsley High School Auditorium Roof Replacement Guilford County Board of Education Guilford County, NC The undersigned, as bidder, hereby declares that the only person or persons interested in this proposal as principal or principals is or are named herein and that no other person than herein mentioned has any interest in this proposal or in the contract to be entered into; that this proposal is made without connection with any other person, company or parties making a bid or proposal; and that it is in all respects fair and in good faith without collusion or fraud. The Bidder further declares that he has examined the site of the work and the contract documents relative thereto, has read all special and supplemental provisions furnished prior to the opening of bids, has satisfied himself relative to the work to be performed, and thereby proposes and agrees if this proposal is accepted, to furnish all necessary materials, equipment, machinery, tools, apparatus, means of transportation and labor necessary to complete the fabrication and delivery of the work, and other related work in full and complete accordance with the plans, specifications and contract documents, to the full and entire satisfaction of the Owner, with a definite understanding that no money will be allowed for extra work except as set forth in the General Conditions and other contract documents, on the Grimsley High School Auditorium Roof Replacement in Greensboro, North Carolina. Bidders are advised that a notice to proceed may be issued upon approval by the Guilford County Board of Education, and in advance of the contract document. The Bidder proposes and agrees, if this proposal is accepted, to execute a Contract within ten (10) days after notification of award, for the above work and for the below stated Compensation, in the form of AIA A Standard Form of Agreement Between Owner and Contractor where the basis of payment is a Stipulated Sum., for the sum of: BASE BID: Dollars ($ ) Single Prime General Construction Bid Form 1

5 BID FORM Contractor Initials & Date ALTERNATES: The Bidder proposes to perform the work indicated as alternates for the amounts entered below, which amounts shall be added to or deducted from the Base Bid as indicated in the space below. (Bidders must enter an amount for each alternate. If acceptance of the alternate will not change the contract amount, enter No Change. Insert the words Add or Deduct in the space provided before the amount.) List of Alternates: Add/Deduct Amount Alternate #1 Alternate #2 Hot mop tapered insulation, cover board and base-ply of roofing $ Replace skylights over the stage area with Acoustical smoke vents $ BID UNIT PRICES: Unit prices quoted and accepted shall apply throughout the life of the contract, except as specifically noted. Unit prices shall be applied, as appropriate, to compute the total value of changes in the scope of the work in accordance with the contract documents. Unit Prices found to be unreasonable in cost may constitute grounds for rejection of the bid List of Unit Prices: Unit Price G-1 Replace Wood Blocking (per board foot) Unit Price G-2 Repair Rusted Metal Deck (per square foot) Unit Price G-3 Repair Damaged Metal Deck (per square foot) Unit Price G-4 Replace Metal Deck (per 30 x 10 sheet) $ $ $ $ ADDENDA: The following addenda were received and used in computing this bid: Date Initial Addendum #1 Addendum #2 Addendum #3 Addendum #4 Single Prime General Construction Bid Form 2

6 BID FORM Contractor Initials & Date The Bidder further proposes and agrees hereby to commence work under this contract on a date to be specified in a written order by the Owner or Designer on or before June 12, 2017, and shall substantially complete the work on or before August 11, The undersigned further agrees that in the case of failure on his part to execute the said contract and the bond within ten (10) consecutive calendar days after written notice being given of the award of the contract, the certified check, cash or bid bond accompanying this bid shall be paid into the funds of the Owner s account set aside for the project, as liquidated damages for such failure; otherwise the certified check, cash or bid bond accompanying this proposal shall be returned to the undersigned. Attach certified check, cash or bid bond to this proposal. RESPECTFULLY SUBMITTED this day of, 20. (Name of firm or corporation making bid) By: Title: (Owner / Partner / President / Vice President) License No. Federal ID No. WITNESS: (Proprietorship / Partnership) By: ATTEST: (Corporation) By: (CORPORATE SEAL) Title: (Corporate Secretary or Asst. Secretary Only) Single Prime General Construction Bid Form 3

7 NEW METAL COPING CAP WITH CONTINUOUS CLEAT (ON FRONT SIDES) NEW SELF-ADHERING MEMBRANE NEW TAPERED EDGE STRIP NEW WOOD BLOCKING NEW TERMINATION BAR WOOD BLOCKING " GASKETTED FASTENER NEW SINGLE PLY FLASHING. HEAT WELD TO RECEIVER NEW METAL RECEIVER NEW METAL COUNTERFLASHING NEW TERMINATION BAR NEW CAP SHEET FLASHING NEW CANT STRIP NEW CAP SHEET 2'-0"± FLASHING NEW COVER BOARD NEW TAPERED INSULATION NEW BASE INSULATION NEW GLASS - MAT GYPSUM BOARD 1 ROOF TO WALL DETAIL A-501 SCALE: 3" = 1'-0" Project Mngr: Drawn By: Checked By: Approved By: RLT Project No. FJ Scale: 3" = 1'-0" File No. FJ DWG 02/28/17 Consulting Engineers and Scientists 2401 BRENTWOOD ROAD, STE. 107 RALEIGH, NC PH. (919) FAX. (919) GUILFORD COUNTY SCHOOLS SK NO. GRIMSLEY HIGH SCHOOL GREENSBORO, NORTH CAROLINA AUDITORIUM ROOF REPLACEMENT 1

8 REMOVE VENTILATOR NEW GRAVITY VENTILATOR WITH METAL CURB NEW CAP SHEET FLASHING NEW CANT STRIP NEW CAP SHEET FLASHING NEW COVER BOARD NEW TAPERED INSULATION NEW BASE INSULATION NEW WOOD BLOCKING METAL DECK 3 A-502 VENTILATOR CURB DETAIL SCALE: 3" = 1'-0" Project Mngr: Drawn By: Checked By: Approved By: RLT Project No. FJ Scale: 3" = 1'-0" File No. FJ DWG 02/28/17 Consulting Engineers and Scientists 2401 BRENTWOOD ROAD, STE. 107 RALEIGH, NC PH. (919) FAX. (919) GUILFORD COUNTY SCHOOLS SK NO. GRIMSLEY HIGH SCHOOL GREENSBORO, NORTH CAROLINA AUDITORIUM ROOF REPLACEMENT 2

9 SKYLIGHT AND CURB TO BE REMOVED NEW CAP SHEET FLASHING NEW COVERBOARD FLASHING NEW CAP SHEET NEW TAPERED EDGE STRIP NEW TAPERED EDGE STRIP NEW 3" 20 GAGE TYPE N ROOF DECK FASTENED TO STEEL CHANNEL NEW TAPERED INSULATION WOOD BLOCKING TO BE REMOVED NEW BASE INSULATION STEEL CHANNEL TO REMAIN 5 A-502 STAGE SKYLIGHT INFILL DETAIL SCALE: 3" = 1'-0" Project Mngr: Drawn By: Checked By: Approved By: RLT Project No. FJ Scale: 3" = 1'-0" File No. FJ DWG 02/28/17 Consulting Engineers and Scientists 2401 BRENTWOOD ROAD, STE. 107 RALEIGH, NC PH. (919) FAX. (919) GUILFORD COUNTY SCHOOLS SK NO. GRIMSLEY HIGH SCHOOL GREENSBORO, NORTH CAROLINA AUDITORIUM ROOF REPLACEMENT 3

10 ROOF COATING NEW ROOF COATING COUNTERFLASHING NEW METAL RECEIVER NEW TERMINATION BAR NEW METAL COUNTERFLASHING NEW CAP SHEET FLASHING NEW CANT STRIP NEW CAP SHEET FLASHING 2'-0"± NEW COVER BOARD NEW TAPERED INSULATION NEW GLASS - MAT GYPSUM BOARD NEW BASE INSULATION 6 ROOF TO FRONT PARAPET A-502 SCALE: 3" = 1'-0" Project Mngr: Drawn By: Checked By: Approved By: RLT Project No. FJ Scale: 3" = 1'-0" File No. FJ DWG 02/28/17 Consulting Engineers and Scientists 2401 BRENTWOOD ROAD, STE. 107 RALEIGH, NC PH. (919) FAX. (919) GUILFORD COUNTY SCHOOLS SK NO. GRIMSLEY HIGH SCHOOL GREENSBORO, NORTH CAROLINA AUDITORIUM ROOF REPLACEMENT 4

11 NOTES: TIME ASSIGNED TO FINISH MATERIALS IN ACCORDANCE WITH TABLE (2) SKYLIGHT AND CURB TO BE REMOVED 3/4 INCH PLASTER: 20 MINUTES IF PORTLAND CEMENT-SAND PLASTER ON METAL LATH 50 MINUTES IF GYPSUM SAND PLASTER ON METAL LATH 1/2 INCH TYPE X GYPSUM BOARD: 25 MINUTES (TWO LAYERS 50 MINUTES) NEW CAP SHEET FLASHING NEW COVERBOARD NEW TAPERED INSULATION NEW CAP SHEET FLASHING NEW TAPERED EDGE STRIP WOOD TO BE REMOVED NEW 2 LAYERS 1/2" TYPE C GYPSUM WALL BOARD NEW 1.5" 20 GAGE TYPE B ROOF DECK FASTENED TO BE STEEL CHANNEL STEEL CHANNEL TO REMAIN 3/4" PLASTER REMAIN WOOD PLASTER GROUND TO REMAIN DIFFUSION SASH, BLOCKING, AND TRIM TO REMAIN 4 A-503 CORRIDOR SKYLIGHT INFILL DETAIL SCALE: 3" = 1'-0" Project Mngr: Drawn By: Checked By: Approved By: RLT Project No. FJ Scale: 3" = 1'-0" File No. FJ DWG 02/28/17 Consulting Engineers and Scientists 2401 BRENTWOOD ROAD, STE. 107 RALEIGH, NC PH. (919) FAX. (919) GUILFORD COUNTY SCHOOLS SK NO. GRIMSLEY HIGH SCHOOL GREENSBORO, NORTH CAROLINA AUDITORIUM ROOF REPLACEMENT 5