CHABOT- LAS POSITAS COMMUNITY COLLEGE DISTRICT

Transcription

1 1 CHABOT- LAS POSITAS COMMUNITY COLLEGE DISTRICT Facilities Planning & Management Department August 11, 2010 Addendum No. 2 INVITATION FOR BID NO.: Industrial Technology Center, Buildings 1400/1600 Renovation - Chabot College All Prospective Bidders: This addendum is issued to clarify, add, delete, correct and/or change the contract documents to the extent indicated and is hereby made a part of the above noted contract documents on which the contract will be based. Any modifications/changes made by this addendum affect only the portions or paragraphs specifically identified herein; all remaining portions of the proposal to remain in force. It is the responsibility of all bidders to conform to this Acknowledge receipt of this addendum in the space provided on the bid form. Failure to do so will be subject Bidder to disqualification as non-responsive. The original Bid Documents are modified by the revision as follows: GENERAL ANNOUNCEMENTS: 1. Power wash all exterior surfaces of Bldg including concrete walls, cmu walls, doors, overhead coiling doors, window, plaster wall and column surfaces, gates, plaster soffits, exposed down spouts, conduits and exterior light fixtures. Perform work with care not to remove (E) prefinished or painted surfaces or damage (E) sealants. The intent is to remove dust, dirt, bird droppings and other elements that detract from the final completed project appearance Franklin Drive, Pleasanton, California 94588

2 DRAWING CHANGES 1. Drawing P-0.1 Plumbing Schedule And Legend (N) Drawing a. Provide revisions to lavatory fixtures. b. Add new fixtures; Hot Water Tank HWT-1, Circulation Pump CP-1 and Balancing Valve BV Drawing P-2.2 Plumbing New Floor Plan Bldg (N) Drawing a. Revised piping layout in areas clouded b. Revised notations for mixing values and equipment attachments. c. Revision to CWS/R and HWS/R pipe size from 2 ½ to 2. d. Delete tankless hot water heaters HW-1 3. Drawing P-3.1 Plumbing Partial Floor Plans (N) Drawing a. Revised piping layout in areas clouded b. Delete tankless hot water heaters HW-1 4. Drawing P-3.2 Plumbing Partial Floor Plans (N) Drawing a. Revised piping layout in areas clouded b. Delete tankless hot water heaters HW-1 5. Drawing P-3.4 Plumbing Partial Floor Plans (N) Drawing a. Revised piping layout in areas clouded b. Delete tankless hot water heaters HW-1 6. Drawing A-2.5 Demolition Roof Plan-Bldg Dwg comment only a. Revise Key Note # 6 as follows; Remove (E) roof hatch and relocate to (N) location shown A-2.10 replace note with Remove (E) roof hatch install (N) roof hatch at Sheet A-2.6 Key Note # 3 location. 7. Drawing A-2.6 New Roof Plan-Bldg Dwg comment only a. Revise Key Note # 3 as follows: Relocate (E) roof hatch and ladder to (N) location, see SSD for (N) opening replace note with (N) roof hatch and ladder to (N) location, see SSD for (N) opening 8. Drawing A-8.0 Roof Details Dwg comment only a. Detail 13 Roof Hatch and Ladder: Revise detail note: Relocate (E) roof hatch, verify framing opening. Paint typ. and replace with (N) roof hatch, Bilco F40 Steel 48 x Drawing S-2.1 Enlarged Floor Plan Bldg.1400 Dwg comment only a. Detail 1 Foundation Plan, add detail reference to install raised concrete curb at (E) slab on grade (8/S5.1) to wall on column line B between column lines 8 and 10. Wall is to receive raised curb is indicated as Stud Wall per 17/S6.1.

3 10. Drawing S-6.1 Typical CMU Details -Dwg comment only a. Detail 8 Typical Free Standing CMU Wall; revise note 4 conc. starter wall to Conc. starter wall height varies, see wall location and adjacent finish grades for placement of top of footing height to be below adjacent (N) AC paving or (N) concrete slab on grade. 11. Drawing A-2.2 Enlarged Floor Plan Bldg 1400 Dwg comment only a. Detail 1 Delete wall elevation 3/A-3.1 plan designation west of column line B at Covered Welding Yard and replace with elevation reference 1/AX-2 as indicated on revised floor plan AX-2 attached. b. Add new wall elevation 1/AX-3 for wall located on column line B at Covered Welding Yard and Covered Welding. See (N) wall elevation AX-3 attached 12. Drawing A-10.2 Room Finish Sched. & Materials Dwg comment only a. Wall Finish Schedule; Add black dot to indicate cork/linoleum Rooms 1418 Special Seminar Room, Room 1618 CNC lab and Room 1620 Computer Lab. See interior elevations for extend and layout of panels. 13. Drawing T4.1, Building 1400 Data Comm. Room 1424 Enlarged Plans & Elevations- TX-1 (N) Drawing a. Revised elevation 3B and keynote TN10. In addition add keynote TN15 as shown on attached drawing TX-1. b. Detail 4, Rack Elevation Revise 48 port patch panel 48 C6PP to read as 48 C6APP. 14. Drawings T6.1, Building 1400 Reflected Ceiling Plan TX-2 (N) Drawing a. Revise the location of the conduit sleeves as shown on attached drawing TX Drawings T8.1, Single Line Diagrams- TX-3 (N) Drawing a. Detail 1, Copper Cabling Single Line Diagram Revise the all drawing reference C6PP to read as C6APP. b. Delete keynote TN8 as shown on attached drawing TX Drawings E301, Power Plan Bldg (N) Drawing a. Key Note # 12, Revise note to Not Used b. Add Key Note # 25 Make final connection to water tank and circulation pump c. Remove Key Note # 12 references on floor plan 17. Drawings E701, Schedules (N) Drawing a. Revise Panel Schedule 14RK and 14RMA to reflect circuits modified by changes to Drawings E3

4 PROJECT SPECIFICATION CHANGES 1. Specification Cast In Place Concrete a. 3.08,C Architectural Concrete Finish: Delete item C entirely b F Slab Finishes: Delete Dry Shake Hardener, Wear Resistant Finish entirely. 2. Specification Concrete Masonry Units a A.1 Materials: Delete Class A-Split Face: Color to be determined by Architect and add See Structural Drawings S1.1 Masonry Subsection B Specification , Communications Cabinets, Racks, Frames and Enclosures; Paragraph 2.02.B.2.f Revise to read as: f. Front and back vertical wire management troughs on both sides of rack, unless otherwise indicated on plans - 12" Wide and x 12" minimum depth vertical cross-section, each trough (24 overall depth). Removable horizontal strips or braces at 12" o.c. vertical restrain Cabling within trough , Communications Cabinets, Racks, Frames and Enclosures; Paragraph 2.02.B.3 Revise to read as: B-Line Advantage Seismic Relay Rack SB FB with CPI Evolution G2, 10 wide, 7 high, Double-Sided Vertical Cable Manager Hoffman ESDR19FM45U with CPI Evolution G2, 10 wide, 7 high, Double-Sided Vertical Cable Manager Ortronics Mighty Mo 6 Seismic Cable Management Rack with CPI Evolution G2, 10 wide, 7 high, Double-Sided Vertical Cable Manager CPI Seismic Frame Two Post Rack with CPI Evolution G2, 10 wide, 7 high, Double-Sided Vertical Cable Manager or equal , Communications Termination Blocks And Patch Panels; Paragraph 2.01.A Revise to read as: Data Patch Panels, Rack Mounted, Category 6A 1. Drawing References: a. ***C6APP where *** refers to port count , Communications Termination Blocks And Patch Panels; Paragraph 2.01.A.3 Revise to read as: 3. Manufacturer a. Systimax 360-PM-GS5-2U-48P Patch Panel. (District Standard). 7. Specification Telecommunication Horizontal Cabling

5 8. Specification ACAMS 9. Specification Video Surveillance Systems 10. Specification Security System Cabling 11. Specification Security Labeling 12. Specification Security System Commissioning REQUEST FOR INFORMATION RFI # 1 Specification Question: Will EverGuard PVC Roofing System Specification P-MA-N-I-BD be accepted as a product substitution for the specified Single Ply PVC Thermplastic roofing? Answer: No, the district standard roofing system will remain the project roofing system. A change in manufacture will void the existing roof warranties and eliminate a single point of warranty contact for campus roofing issues that is presently in effect. RFI # 2 Specification s I Question: Can Soloman Industrial Colors: Ironoxide product is considered as a substitution for mortar and integral color applications? Answer: This project does not have integral color mortar or concrete applications. RFI # 3 Question: Answer: Sheet A-10.1 Door and Window Schedule Automated Industrial Services: Should Door G be a swing door as indicated on the plan view, or a sliding door? Door G is a Type F-1 door type. The F-1 door type indicates a hinge acting door as indicated under the door elevation. The door is an existing hinged door. The schedule should indicate (E) for the door not (N) as indicated.

6 RFI # 4 Sheet M-2.2 HVAC New Floor Plan Bldg 1400 Question: RoboVent: Can we use another brand of filtration device in weld lab. Currently you have this listed as Lincoln and we can offer Weldvent. Reason: Better construction (metal vs plastic), Better price up front and for filters ongoing, Better warranty (2 years vs 1 year). Answer: After reviewing the welding system by WeldVent model DFMs-1500, the exhaust CFM is equivalent to as specified on drawings. However, due to the lack of information provided, we could not accept the product. Please provide information as specified on specification 01630B to K for final acceptance of product. John Chou H & M Mechanical Group RFI # 5 Sheet A-2.17 Enlarged Floor Plan Finishes Plan Bldg Question: MMM Flooring: The legend indicates use of 12 x 12 Marmoleum field tiles and 12 x 12 Marmoleum border tiles. The drawings do not scale exactly 12 for the border tiles. What is the intent? Answer: The drawings should not be scaled. The intent is to provide a 12 x 12 border of along the perimeter using one color 12 x 12 tiles and different color 12 x 12 for the field tile. Adjustment will need to be made in the field to accommodate new and existing conditions. RFI # 6 Question: Answer: Question: Answer: Sheet M-0.1 Syserco Inc: RFI # 1; Fan Coil Schedule: Note 2 states: Deluxe piping package and 3-way control valve. Who provides the valves? RFI # 1 Engineer s Response: The 3-way control valve comes with the deluxe piping package which is provided by Trane the manufacturer. Syserco Inc: Detail 5: Control Diagram: Diagram shows 2 dampers for OA and RA. Who will provide economizer/return air damper actuators? Will Syserco need to provide an analog output to control the motors? RFI # 2 Engineer s Response: The Economizer damper actuators are provided by Syserco. RFI # 7 Sheet A2.2, A3.1, A10.1, A10.3 Question: On Floor Plan A2.2 there appears 2 windows Type A at the exterior of Covered Welding Room 1416C. According to the window schedule on plan A-10.1, the Type A window (changed in addendum 1 from Type 1) is shown as an alumiumn window with 3 vertical mullions. On exterior elevation plan A3.1, these windows are shown with a singular vertical mullion and have a key note of 1, which indicates new HM window? Please clarify if this is a HM or aluminum window and if it has 1 or 3 vertical mullions.

7 Answer: RFI # 8 Question: Answer: The windows are aluminum windows as indicated on Sheet A-10.1 Window Type 1. Details 19 and 20 on Sheet A-10.2 indicates alumiumn frames. The correct number of mullions is those shown on Window Type 1 on Sheet A Sheet A-5.3 Interior Elevations Bldg 1400 & A-5.5 Interior Elevations Bldg On interior detail 7/A5.3 and 2 & 3/A5.5 a colored cork tackboard is called out. The cork tackboard is not specified? What is the product? The colored cork tackboard indicated shall be Forbo Color Permeated Cork 48 wide with brushed aluminum 1-1/2 frame. Color to be selected from manufacturer standard colors. RFI # 9 Sheet A-2.4 New Equipment Floor Plan Bldg 1400 Question: RoboVent: Room 1416C indicates equipment E-1. By column line 9/J. Is this the same piece of equipment indicated in B Down Draft Table Model PB-55? Answer: Equipment E-1 indicated on Sheet A-2.4 is an (E) down draft table that will be replaced with the (N) Model PB-55. The (E) down draft table will be installed by the district at an alternate location to be determined. Attachments If you have any questions regarding this Addendum No.2, please contact the Office of the Facilities Planning & Management in writing, via facsimile or . All other terms and conditions of BID No is to remain the same. Regards, Victoria L. Lamica Contract Manager vlamica@clpccd.org

8 TABLE OF CONTENTS Addendum No. 2 Document dated DRAWING CHANGES Drawing P-0.1 Plumbing Schedule And Legend Add # 2 dated Drawing P-2.2 Plumbing New Floor Plan Bldg Add #2 dated Drawing P-3.1 Plumbing Partial Floor Plans Add #2 dated Drawing P-3.2 Plumbing Partial Floor Plans Add #2 dated Drawing P-3.4 Plumbing Partial Floor Plans Add #2 date Drawing T4.1-TX-1Building 1400 Data Comm Room 1424 Enlarged Plans &Elevations Drawing T6.1-TX-2 Building 1400 Reflected Ceiling Plan Drawing T8.1-TX-3 Single Line Diagrams Drawing 01E301, Power Plan Bldg Add #2 dated Drawing 01E701, Schedules Add #2 dated Drawing AX-2 Enlarged Floor Plan Sheet A2.2 dated Drawing Covered Welding Yard dated SPECIFICATION CHANGES Telecommunication Horizontal Cabling Basic Security Requirements ACAMS Video Surveillance Systems Security System Cabling Security Labeling Security System Commissioning END OF TABLE OF CONTENTS END OF ADDENDUM NO. 2