ARNOLD ELEMENTARY SCHOOL ADDENDUM NO. 7 REPLACEMENT JANUARY 11, CHURCH ROAD PAGE 1 OF 3 ARNOLD, MARYLAND 21012

Transcription

1

2 ARNOLD ELEMENTARY SCHOOL ADDENDUM NO. 7 REPLACEMENT JANUARY 11, CHURCH ROAD PAGE 1 OF 3 ARNOLD, MARYLAND GWWO, INC./ARCHITECTS 800 WYMAN PARK DRIVE, SUITE 300 BALTIMORE, MARYLAND GWWO PROJECT NO This Addendum forms a part of the Contract Documents and modifies the original Bidding Documents, as noted below. Acknowledge receipt of this Addendum in the space provided on the Bid Form. Failure to acknowledge addendum may disqualify Bidder. This addendum contains ten (10) pages (8 ½ x 11 ). This addendum forms part of the Contract Documents and modifies them as follows: RESPONSES TO REQUEST FOR INFORMATION / CLARIFICATION: Addendum Item No. AD7.01 AD7.02 AD7.03 Description Question: Specification Section , Article 1.3, Paragraph A.1 makes reference to Draw-Curtain Machines. However, there are no specifics on the curtain machines and they are not mentioned anywhere else in this section. If curtain machines are required, please provide specifics for the curtain machines, quantity and location where they will be utilized. Response: Draw-Curtain Machines are not required. See Changes to Project Manual AD7.11 Question: Specification Section , Article 2.10, Paragraph A.2 indicates to shoppaint pipe battens black. We propose to use 1-1/2" Schedule 40 black steel pipe with a high quality lacquer finish for this application. Is this acceptable? Response: Requirement to shop-paint pipe battens deleted. See Changes to Project Manual AD7.11 Question: Specification Section , Article 2.7 entitled Scrims and Drops present fabrication requirements for said items. After reviewing the bid documents, I cannot locate where these curtains are required nor find desired sizes. Consequently, are scrims and drops required for this project? Response: Scrims and Drops are not required. See Changes to Project Manual AD7.11 AD7.04 Question: Specification Section , Article 2.10, Paragraph D indicated grade 80 chain is required. Grade 80 chain is not used for dead-hung supports due to the size and shape of its links, 1/4". Grade 30 chain is typically used to suspend dead-hung items over a stage as it greatly exceeds the minimum safety factors required for static loads. Please advise. Response: Specification revised to indicate Grade 30 chain. See Changes to Project Manual AD7.11

3 ARNOLD ELEMENTARY SCHOOL ADDENDUM NO. 7 REPLACEMENT JANUARY 11, CHURCH ROAD PAGE 2 OF 3 ARNOLD, MARYLAND AD7.05 AD7.06 AD7.07 Question: Specification Section , Article 1.3, "E" mentions delegated design including analysis data signed and sealed by a Professional Engineer. Being that this is a new building, is this requirement still needed? Response: Delegated design is required per the requirements of Section Question: Specification Section , Article 2.4 references lining fabric specifics. Article 2.6 entitled Curtain Fabrication does not identify lining in the fabrication process. Article 3.7, Paragraph A.5 indicates lining but does not identify which curtain receives lining. Therefore, could you please identify which curtains are to receive lining? Response: Lining is not required. See Changes to Project Manual AD7.11 Question: Will the pipe for this project need to be of domestic origin for the preinsulated 8" pipe? Response: There are no requirements in the Contract Documents for domestic origin for the pre-insulated 8 pipe. AD7.08 Question: Please clarify if a 4" (per note 8 on S1.0) or a 6" (per spec section ) stone sub base is required for the slab on grade. AD7.09 AD7.10 Response: 6 stone sub base is required for slabs on grade. See Changes to Drawings AD7.16 Question: Will CAD drawings be made available to the successful bidder to facilitate shop drawings? What, if any, will be the charge? Response: Yes, CAD drawings will be available to the successful bidder upon request. Please refer to Section for specific requirements and charges. Question: Please clarify the total thickness for the slab on metal decks. Response: Total thickness for slab on metal decks is 4 as indicated on S1.10. CHANGES TO PROJECT MANUAL Addendum Item No. AD7.11 AD7.12 AD7.13 AD7.14 Description SECTION DELETE: Stage Curtains ADD: Re-issue Section Stage Curtains SECTION HORIZONTAL LOUVER BLINDS ADD: 2.1, A, 4. Crown Shade Company; Product 2" Galaxy Plus: SECTION WINDOW SHADES ADD: 2.1, A, 4. Crown Shade Company: SECTION AUTOMATIC CONTROL SYSTEMS (ELECTRIC/ELECTRONIC) DELETE: 2.2, P, 2. Parking lot lights shall operate through a combination of photocell and scheduling with a manual four (4) hour override available. DELETE: 2.2, P, 3. Building security lights shall operate via photocell and will be tied to

4 ARNOLD ELEMENTARY SCHOOL ADDENDUM NO. 7 REPLACEMENT JANUARY 11, CHURCH ROAD PAGE 3 OF 3 ARNOLD, MARYLAND the same manual override as parking lot lights. AD7.15 DELETE: 2.19, B. All wiring shall be installed in conduit. Refer to Division-26 section, Raceways. MC cable is prohibited in all locations. ADD: 2.19, B. All wiring in exposed areas and in/above inaccessible ceilings and walls shall be installed in conduit. Plenum rated wiring may be used above accessible ceilings. Refer to Division-26 section, Raceways. SECTION ACCESS CONTROL SYSTEM DELETE: 2.2, A, 4. Access Control Monitoring Station a. HP h8t Series (No Substitutes, Must be HP) b. Windows 7 Professional c. Intel Core i quad core processor 3.1 GHz, 6MB cache d. 8 GB DDR3-1066MHz SDRAM, 2 DIMMs e. 1.5 TB 7200 rpm SATA 3 GBp/s hard drive f. 1 GB DDR3 Radeon HD 6450 Graphics Card g. SuperMulti DVD Burner h Card reader i. Ethernet Port j. Keyboard and Optical Mouse ADD: 2.2, A, 4. Access Control Monitoring Station a. Must conform with the current AACPS standard at the time of purchase. b. Current model HP Elite Book 840 G3 (L3C64AV) CHANGES TO DRAWINGS Addendum Revised Sketch Item No. Sheet No. Description AD7.16 S1.0 - FOUNDATION PLAN NOTES Modify Note 8 to read as follows: ALL INTERIOR FLOOR SLABS SHALL BE 4" THK. NON-AIR ENTRAINED FIBER-REINFORCED CONCRETE ON 6" OF COMPACTED STONE, U.N.O. PROVIDE SAWCUT CONTROL JOINTS AS INDICATED IN THE CAST-IN-PLACE CONCRETE CONSTRUCTION SECTION OF THE GENERAL SPECIFICATIONS. SUBMIT A CONTROL JOINT LOCATION PLAN TO THE ENGINEER FOR REVIEW & APPROVAL. AD7.17 M5.1 - ATC GENERAL NOTES Modify Note 21 to read as follows: All wiring in exposed areas and in/above inaccessible ceilings and walls shall be installed in conduit. Plenum rated wiring may be used above accessible ceilings. Refer to Division-26 section, Raceways. END OF ADDENDUM 7

5 SECTION PART 1 - GENERAL 1.1 SUMMARY A. Section Includes: 1. Stage curtains. 2. Draw-curtain tracks. 3. Curtain rigging. 1.2 PREINSTALLATION MEETINGS A. Preinstallation Conference: Conduct conference at Project site. 1.3 ACTION SUBMITTALS A. Product Data: For each type of product and the following: 1. Tracks: Capability of each track to support the weight and operation of curtains that it supports. B. Shop Drawings: For each installation and for special components not dimensioned or detailed in manufacturer's product data. 1. Include plans, elevations, sections, and attachment details of curtains. 2. Include fabric assembly and hanging details. 3. Dimension operating clearances. 4. Include documentation of capacity of each batten, track, attachment, and rigging component to support loads. 5. Points of attachment for proscenium curtain and the corresponding static and dynamic loads imposed on structure. 6. Locations of equipment components, switches, and controls. Differentiate between manufacturer-installed and field-installed wiring. C. Samples for Initial Selection: For each type of stage curtain indicated. Include color charts showing full range of colors, textures, and patterns available, together with 12-inch- (300-mm-) square Sample (any color) of each fabric type and seam. D. Samples for Verification: Full width by minimum 12-inch- (300-mm-) long section of each fabric from dye lot to be used for the Work, with specified treatments applied. Show complete pattern repeat. Mark top and face of fabric. E. Delegated-Design Submittal: For stage-curtain systems and attachments to structure, including analysis data signed and sealed by the qualified professional engineer responsible for their preparation. 1.4 INFORMATIONAL SUBMITTALS A. Coordination Drawings: Reflected ceiling plans and other details, drawn to scale, on which the following items are shown and coordinated with each other, using input from installers of the items involved: 1. Structural members to which tracks, battens, and other stage-curtain equipment will be attached. 2. Locations of lighting fixtures and cabling, ductwork, piping, and sprinklers. 3. Rigging equipment for stage equipment. Issued for Bid - 11/7/2016 ADDENDUM NO

6 4. Access panels. B. Qualification Data: For Installer. C. Product Certificates: For the following, from manufacturer: 1. Fabric: Provide name of flame-retardant chemical used, identification of applicator, treatment method, application date, allowable life span for treatment, and details of any restrictions and limitations. 2. Rigging: Compliance of suspended tracks with requirements. D. Sample Warranty: For manufacturer's special warranty. 1.5 CLOSEOUT SUBMITTALS A. Operation and Maintenance Data: For stage curtains and rigging to include in operation and maintenance manuals. 1.6 QUALITY ASSURANCE A. Installer Qualifications: Manufacturer of stage curtains. 1.7 FIELD CONDITIONS A. Environmental Limitations: Do not install stage curtains until spaces are enclosed and weathertight, wet work in spaces is complete and dry, work at and above ceilings is complete, and ambient temperature and humidity conditions are maintained at the levels indicated for Project when occupied for its intended use. B. Field Measurements: Verify locations of supporting structural elements and construction contiguous with stage curtains and rigging by field measurements before fabrication. 1.8 WARRANTY A. Manufacturer's Special Warranty: Manufacturer agrees to repair or replace components of stage-curtain systems that fail in materials or workmanship within specified warranty period. 1. Failures include, but are not limited to, faulty operation of rigging. 2. Warranty Period: Two years from date of Substantial Completion. PART 2 - PRODUCTS 2.1 STAGE-CURTAIN SYSTEMS A. Description: Complete stage-curtain systems, including stage curtains, tracks, and rigging; with necessary accessories for support and operation. 1. Manufacturers: Subject to compliance with requirements, provide products by the following: a. Black Sheep Enterprises. b. Georgia Stage, Inc. c. iweiss Theatrical Solutions. d. Janson Industries. e. LimeLight Productions, Inc. f. LuXout Stage Curtains. g. Mainstage Theatrical Supply, Inc. h. NorthEast Stage. Issued for Bid - 11/7/2016 ADDENDUM NO

7 i. Rose Brand. j. Sew What? Inc. k. Show Works. l. S&K Theatrical Draperies, Inc. m. Stagecraft Industries, Inc. n. Stage Decoration & Supplies, Inc. o. Syracuse Scenery & Stage Lighting Co., Inc. p. Texas Scenic Company, Inc. q. Tru-Roll, Inc.; a division of Advanced Entertainment Technology. B. Source Limitations: Obtain stage-curtain systems from single manufacturer. Obtain each color, grade, finish, type, and variety of fabric from single source with resources to provide materials of consistent quality in appearance and physical properties. 2.2 PERFORMANCE REQUIREMENTS A. Delegated Design: Engage a qualified professional engineer, as defined in Section "Quality Requirements," to design stage-curtain systems, including comprehensive engineering analysis and attachments to building structure, using performance requirements. B. Structural Performance: Stage-curtain systems and attachments to structure shall withstand the effects of gravity and operational loads and the following loads and stresses: 1. Design Loads: Weight of curtains and track. C. Fire-Test-Response Characteristics: Provide stage curtains meeting the following requirements as determined by testing identical products by UL or another testing and inspecting agency acceptable to authorities having jurisdiction. 1. Flame-Propagation Resistance: Passes NFPA 701. a. Permanently attach label to each fabric of curtain assembly indicating whether fabric is inherently and permanently flame resistant or is treated with flame-retardant chemicals and whether it requires retreatment after cleaning or after a designated time period of use. b. Permanently attach 12-inch- (300 mm-) square swatch of same fabric and dye lot for each fabric of a curtain assembly to the back of assembly for use as fire-resistance test strip. D. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application. 2.3 CURTAIN FABRICS A. General: Provide fabrics inherently and permanently flame resistant or chemically flame resistant by immersion treatment according to performance requirements indicated. Provide fabrics of each type and color from same dye lot. B. Heavyweight Woven Cotton Velour: Main curtain and Valance curtain. Napped fabric of 100 percent cotton weighing not less than 25 oz./linear yd. (775 g/linear m), with pile height not less than 79 mils (2 mm); 54-inch (1372-mm) minimum width. 1. Products: Subject to compliance with requirements, provide the following: a. Dazian LLC; Symphony. b. Frankel Associates/Fabric One; 950. c. JB Martin Company; #2703 Overture. d. KM Fabrics, Inc.; Memorable. e. Valley Forge Fabrics, Inc.; 2525 Velour. 2. Color/Texture/Pattern: As selected by Architect from manufacturer's full range. Issued for Bid - 11/7/2016 ADDENDUM NO

8 C. Medium-Weight Woven Cotton Velour: Side and Back Wall curtains. Napped fabric of 100 percent cotton weighing not less than 20 oz./linear yd. (620 g/linear m), with pile height not less than 75 mils (1.9 mm); 54-inch (1372-mm) minimum width. 1. Products: Subject to compliance with requirements, provide the following: a. Dazian LLC; Allure. b. Frankel Associates/Fabric One; 650. c. JB Martin Company; #2603 Concertino. d. KM Fabrics, Inc.; Marvel. e. Valley Forge Fabrics, Inc.; 2020 Velour. 2. Color/Texture/Pattern: Wheat or Tan, As selected by Architect from manufacturer's full range. 2.4 CURTAIN-BOTTOM WEIGHTS A. Individual Weights: Curtain manufacturer's standard segmented weights to suit each curtain type and location. B. Proof Coil Chain: Grade 30, No. 8, zinc plated, 3/16 inch (4.7 mm), ASTM A 413/A 413M. C. Weight Tape: Curtain manufacturer's standard, continuous weight tape to suit each curtain type and location. D. Pipe or Conduit Weight and Stiffener: Curtain manufacturer's standard or recommended stiffening pipe or conduit that slides into bottom hem, suitable for curtain type and location indicated. 2.5 CURTAIN FABRICATION A. General: Affix permanent label, stating compliance with requirements of authorities having jurisdiction, in accessible location on fabric not visible to audience. Provide vertical seams unless otherwise indicated. Arrange vertical seams so they do not fall on faces of pleats. Do not use fabric cuts less than one-half width. B. Vertical and Top Hems: Machine sew hems as follows unless otherwise indicated: 1. Vertical Hems: Minimum 2 inches (50 mm) wide, with not less than a 1-inch (25-mm) tuck and with no selvage material visible from front of curtain. Sew open ends of hems closed. 2. Turnbacks: Provide leading-edge turnbacks for traveler curtains, formed by folding back not less than 12 inches (300 mm) of face fabric, with not less than a 1-inch (25-mm) tuck, and vertically secured by sewing. 3. Top Hems: Reinforced by double-stitching 3-1/2-inch- (89-mm-) wide, heavy, jute webbing to top edge on back side of curtain with not less than 2 inches (50 mm) of face fabric turned under. C. Fullness: Percent Fullness: Provide fullness, exclusive of turnbacks and hems, by sewing additional material into 3-inch (75-mm) double-stitched, flat, box pleats spaced at 12 inches (300 mm) o.c. along top hem reinforcement. D. Grommets: Brass, No. 3, or No Black Curtains: Provide brass or aluminum grommets with black finish. 2. Pleated Curtains: Center grommets on each box pleat and place 1 inch (25 mm) from corner of curtain; for snap hooks or S-hooks. E. Bottom Hems: Machine sew hems as follows unless otherwise indicated: 1. For Curtains With Fullness: Issued for Bid - 11/7/2016 ADDENDUM NO

9 a. Curtains That Do Not Hang to Floor: Hems not less than 3 inches (75 mm) deep, and with open ends of hems sewn closed. b. Floor-Length Curtains: Hems not less than 6 inches (150 mm) deep, with 1-inch (25-mm) weight tape sewn to top seam of the bottom hem, clear of the finished bottom edge, and with open ends of hems sewn closed. 2.6 CURTAIN ACCESSORIES A. S-Hooks: Manufacturer's standard heavy-duty plated-wire hooks, not less than 2 inches (50 mm) long. B. Tie Lines: No. 4 or No. 4-1/2 cord or braided soft cotton tape, black or white to best match curtain; not less than 5/8 inch (16 mm) wide by 36 inches (900 mm) long, threaded through grommets. C. Snap Hooks: Manufacturer's standard heavy-duty hooks, sewn to top edge of curtain. 2.7 STEEL CURTAIN TRACK A. Steel Track: Roll-formed, galvanized, commercial-quality, zinc-coated steel sheet, ASTM A 653/A 653M; G60 (Z180) coating designation; with continuous bottom slot and with each half of track in one continuous piece; complete with necessary accessories for support and operation. 1. Products: Subject to compliance with requirements, provide the following: a. Automatic Devices Company; 170 series, Besteel. b. H & H Specialties Inc.; 200 series. c. Tru-Roll, Inc., a division of Advanced Entertainment Technology; No Heavy Duty Straight Track. 2. Curved Track: Factory-fabricated sections. 3. Cable Guides for Curved Track: Outside idlers, mule pulleys, spindles, and guides; quantity sufficient for configuration of curve(s) and length of track. 4. Steel Thickness: As recommended by manufacturer for loads and operation. a. Heavy Duty: Minimum inch (2.01 mm). B. Curved-Suspended-Track Stiffener: NPS 1-1/2 (DN 40) steel pipe for supporting both sections of suspended curved tracks; curved to match track. C. Clamp and Bracket Hangers: Steel clamps and brackets of sufficient strength required to support loads for attaching track to overhead support. D. Track-Lap Clamp: Metal to match track channel for attaching two tracks at center overlap. E. Folding Guide: Where indicated, equip carriers with rear-fold or backpack guide and rubber spacers to fold curtain from the offstage end of the track; sized for use with operating line if any. F. Heavy-Duty Track System: Equip track with heavy-duty components as recommended by manufacturer for loads and operation. Provide end stops for track. 1. Curtain Carriers: Standard carriers of plated steel with a pair of nylon-tired ball-bearing wheels riveted parallel to body. Equip carriers with rubber or neoprene bumpers to reduce noise, and heavy-duty, plated-steel swivel eye and trim chain for attaching curtain snap or S-hook. Provide quantity of curtain carriers sufficient for track length, to suit curtain fabrication. a. Master Curtain Carriers: One master carrier, for each leading curtain edge, of plated steel with two pairs of nylon-tired ball-bearing wheels and with two line guides per carrier. 2. Pulleys: One dead-end, single-wheel pulley; one live-end, double-wheel pulley; and one adjustable pulley to maintain proper tension on operating line; each with not less than Issued for Bid - 11/7/2016 ADDENDUM NO

10 5-inch (125-mm) molded-nylon- or glass-filled-nylon-tired ball-bearing sheaves enclosed in steel housings. Provide pulleys with steel housing finished to match track and with bracket for securing off-stage curtain end. G. Manual Cord Operation: Provide with cord operating line, 3/8-inch- (9-mm-) diameter, stretch-resistant operating cord of braided synthetic-fiber jacket over solid, synthetic-fiber, linear filaments. 2.8 CURTAIN RIGGING A. Battens: Fabricated from steel pipe with a minimum number of joints. Connect pipe at joints with a drive-fit pipe sleeve not less than 18 inches (450 mm) long, and secure with four flush rivets, plug welds, threaded couplings, or another equally strong method. 1. Steel Pipe: ASTM A 53/A 53M, Grade A, standard weight (Schedule 40), black, NPS 1-1/2 (DN 40) nominal diameter unless otherwise indicated. B. Supports, Clamps, and Anchors: ASTM A 153/A 153M, Class B, galvanized sheet steel in manufacturer's standard thicknesses, galvanized after fabrication. C. Trim and Support Chain: ASTM A 391/A 391M, Grade 30, hardened alloy steel chain rated for overhead lifting. D. Inserts, Bolts, Rivets, and Fasteners: Manufacturer's standard corrosion-resistant units. PART 3 - EXECUTION 3.1 EXAMINATION A. Examine areas and conditions, with Installer present, for compliance with requirements for supporting members, blocking, installation tolerances, clearances, and other conditions affecting performance of stage-curtain work. B. Examine inserts, clips, blocking, or other supports required to be installed by others to support tracks and battens. C. Proceed with installation only after unsatisfactory conditions have been corrected. 3.2 INSTALLATION, GENERAL A. Install stage-curtain system according to curtain manufacturer's written instructions. 3.3 BATTEN INSTALLATION A. Install battens by suspending at heights indicated with trim and supports spaced to support load, except do not exceed 10 feet (3 m) between supports. 1. Chain Trim and Support: Secure chain with load-rated terminations. 3.4 TRACK INSTALLATION A. Wall-Mounted Track: Install track by suspending from brackets securely mounted to wall construction at track-support spacing, according to manufacturer's written instructions. B. Batten-Hung Track: Install track by suspending from pipe batten with manufacturer's track clamp hangers attached to batten pipe clamps at track-support spacing, according to manufacturer's written instructions. Issued for Bid - 11/7/2016 ADDENDUM NO

11 C. Track-Support Spacing: According to manufacturer's recommendations for applied loads, but not exceeding the following dimensions between supports: 1. Heavy-Duty Track: 72 inches (1829 mm). 2. Curved Walk-Along Track: 48 inches (1219 mm), with additional supports at curves and splices. D. Install track for center-parting curtains with not less than 24-inch (600-mm) overlap of track sections at center, supported by track lap clamps. 3.5 CURTAIN INSTALLATION A. Track Hung: Secure curtains to track carriers with S-hooks. B. Batten Hung: Secure curtains to pipe battens with S-hooks. 3.6 DEMONSTRATION A. Engage a factory-authorized service representative to train Owner's maintenance personnel to adjust, operate, and maintain stage curtains and tracks. 3.7 CURTAIN SCHEDULE A. Platform Curtain : As indicated on Drawings and as follows: 1. Type: Proscenium. 2. Horizontal Accessory Curtain: Valance. 3. Size and Arrangement: As indicated on Drawings. 4. Fabric: Heavyweight Woven Cotton Velour: Main curtain and Valance curtain. Medium-Weight Woven Cotton Velour: Side and Back Wall curtains.. 5. Fullness: 50 percent. 6. Battens: As recommended by manufacturer. 7. Track Shape: Curved as indicated on Drawings. 8. Operation: Manual cord (pulley rope). END OF SECTION Issued for Bid - 11/7/2016 ADDENDUM NO