GENERAL PROJECT CONSTRUCTION NOTES: REVISIONS
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<br /> The information given herein and on the plans is as exact as could be secured for bidding purposes.Accuracy is to be field verified.Contractors must examine the job conditions and verify all measurements,distances, It is the responsibility of the contractor to protect building occupants and the public from falling debris or equipment.Do not throw materials from the roof.Contractor is responsible for protecting building surfaces,
<br /> elevations,clearances,etc.And base their bids and work on verified conditions.These documents serve to depict the final configuration of improvements,and do not dictate all responsibilities the contractors have in finishes,and systems from damage,discoloration,etc.During the course of all construction activities. Z
<br /> achieving that end.The contractor is to report to the designer any conflict between bid documents,field conditions and/or code requirements prior to commencement of work.All products proposed for use shall be in Contractor is responsible for verifying all dimensions and conditions of the project,including verification of existing roof system construction and materials.
<br /> accordance with applicable federal,state and local governing ordinances,codes and regulations.Notify the consultant immediately of conflicts between the specified products and/or project work requirements and Al
<br /> codes,ordinances and/or regulations. Contractor staging and storage areas shall be as directed by the owner's representative at the pre-construction meeting.Contractor shall assume a reasonable amount of storage and staging space will be made available.
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<br /> Contractor is responsible for knowing the roof deck loading capacity of the existing building for storage of materials on the existing structure.Do not overload the roof structure with materials,equipment,or debris.
<br /> The Contract Documents showing the existing construction were prepared using limited field observations by the Consultant.Actual conditions may vary from those shown.Hidden conditions may be discovered over
<br /> the course of the work.Further investigations may uncover conditions which may require remedial attention prior to proceeding with demolition or construction.Contractor shall be aware of the need to proceed with Personal fall protection devices are not,nor will be,provided by the owner on any roof area designated to receive work.Personal fall protection is the responsibility of the contractor.
<br /> due diligence and care and shall notify Consultant of conditions which do not reflect those indicated or which require further testing and repair prior to proceeding.Contractor shall correct conditions that are
<br /> detrimental to timely and proper execution of the Work.Contractor shall not proceed until unsatisfactory conditions have been corrected.Commencement or continuation of work constitutes acceptance of Existing materials and construction are noted on the drawings as existing.All other notations indicate new materials,products,and construction unless otherwise stated or indicated.
<br /> conditions and responsibility for satisfactory performance. All hazardous materials,including,but not limited to asbestos,lead and PCB containing materials must be removed by a qualified and licensed abatement contractor in accordance with the local,state and federal
<br /> authorities having jurisdiction.Contractor is to provide all documentation required by the local authorities including material manifests for disposal and air monitoring reports were required.
<br /> Refer to project specifications for additional information. s
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<br /> Project location: 1200 Industry St,Everett,WA 98203
<br /> The new roof system will incorporate low-no-odor adhesives in the application in accordance with current OSHA regulations. U)
<br /> City/County of: Snohomish County,Washington �
<br /> Relevant codes: 2018 Washington State Building Code Add new wood nailers,as required,to match depth of the new insulation. `J
<br /> 2018 Washington State Energy Code Add additional wood blockingand plywood to parapet walls as designed in contract drawings.Raise ravel stop edges to exceed insulation height b 1 2 x board at the lowest point unless the edge is associated with a O
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<br /> 2018 Washington State Mechanical Code gutter drainage system or contract drawings provide an alternate design.
<br /> 2018 Washington State Electrical Code(National Electric Code NFPA 70)
<br /> 2018 Washington State Plumbing Code O
<br /> New wood nailers must be a set 1/4"below the finished roof surface at all gutter edges and primary scupper escutcheons.
<br /> 2018 Washington State Fire Code
<br /> Including State,City,and County Amendments g
<br /> 2021 Code Edition will become effective 3/15/2024 All lumber in contact with masonry or concrete is to be pressure treated except for plywood,U.O.N.
<br /> The Scope of Work includes installation of a new 80 mil TPO roof recover designed for a 30-year manufacturer's special project warranty.The contractor will provide a 5-year contractor's workmanship guarantee. The wood blocking shown in the details and sections are graphic representations only.Solid continuous blocking shall be provided to match roof insulation at the thickest point and maintain the same elevation for the a
<br /> The existing roof system at Roof Area A consists of a granular surface,modified bitumen roof system over a wood roof deck. entire perimeter of the roof unless otherwise indicated.
<br /> The Base Bid Roof Recover of Area A will consist of:
<br /> • Remove existing roof flashings.
<br /> Do not install wood nailers ahead of new roofing work.Only install nailers that can be covered the same day.
<br /> • Disable existing roof membrane in accordance with manufacturer's requirements.
<br /> • Furnish and install new 80 mil white TPO membrane with mechanically attached induction welded fasteners(8,12,16 min)OR in-seam fasteners at 6"o.c. Counter sink all fasteners for wood blocking.
<br /> o Basis of Design Manufacturers: L o
<br /> Carlisle,Johns Manville,Elevate All existing wood blocking to remain is to be fastened with additional screws as per FM 1-49 placement.Pre-drill and set new securement using epoxy shields in masonry units and TEK fasteners in steel as required for
<br /> • Furnish and install a new''/:"ASTM C 1289 Type II Class 4 Grade 2(100+psi)CGF polyisocyanu rate HD cover board,mechanically fastened. positive attachment.Consult with professional fastener companies like Hilti,Triangle fasteners,etc.for additional guidance. a o
<br /> • Contractor is required to perform fastener pull testing. # Q a
<br /> • Contractor is required to perform moisture survey.Remove and replace wet roofing materials on a unit rate basis. All roof curbs greater than 24"wide and set perpendicular to the roof slope shall be required to receive a tapered saddle to promote positive water flow. s o
<br /> • Premanufactured tapered organic faced ISO insulation units are to be used at crickets and saddles to promote positive water flow to the roof drainage system.Provide additional tapered insulation as needed to O o
<br /> prevent low spots and ponding water. The new roof system is to incorporate insulation attachment to incorporate wind pressure enhancements at the field,perimeter,and corners in accordance with ASCE 7 as defined by local codes. 3 o-o0
<br /> • Furnish and install 6"wide yellow safety stripe 10'from roof perimeter where parapet walls are less than 42"tall. 7 —N a 3
<br /> • Furnish and install new roof hatch with curb-mounted safety rail system.
<br /> Premanufactured tapered insulation units are to be used at roof sumps,crickets,and saddles to promote positive water flow to the roof drains.Field-fabricated tapered units maybe used if approved during the & o n t
<br /> • Furnish and install manufacturer's standard walk pad at the roof access point and serviceable rooftop unit access doors. 2 0.
<br /> submittal process.
<br /> • Furnish and install new ES-1 metal coping in like kind with existing.Color to be selected by Owner.Wrap new membrane up parapet walls and wrap overtop to terminate under new coping. N O
<br /> • Replace collector heads and downspouts at scuppers in like kind with existing. 7
<br /> • Furnish and install new roof hatch with curb-mounted safety rail system. All roof membrane details are to follow roof manufacturer's details for a 30-year warranty whether or not a 30-year warranty is required. L i-F
<br /> • Replace wood equipment supports with new rubber-based,adjustable equipment supports on protection pads. & Z
<br /> • Replace all existing pitch pockets with liquid flashing detail.Pitch pockets will be accepted only with prior approval from Roof Designer. Install manufacturers pre-fabricated inside and outside flashing corners following the recommendations and requirements of the roofing membrane manufacturer.Provide"t-joint covers"at the base of all vertical
<br /> • Replace skylight/smoke vents,including burglar bar fall protection,in like kind with existing. flashing/field seam intersections. ZZ
<br /> • Contractor is to remove existing roof assembly at areas of deck deflection>3/4"to check deck and structure for damage.
<br /> • Contractor is to remove abandoned curbs and penetrations.Coordinate with Owner. Secure top edge or termination of all membrane flashing using an aluminum termination bar secured 12-inches o.c.,max.(detail shown on the project plans),and within 2-inches of each end.Prior to termination bar
<br /> • Coordinate with Owner and Owner's MEP contractor to raise RTUs and curb heights as needed to meet the manufacturer's minimum acceptable vertical flashing height and meet increased roof height. installation,install manufacturers recommended compression sealant behind flashing where termination bar will be placed.Apply manufacturers'approved sealant to the top edge of flashing and termination bar after z
<br /> • The base bid roof system will be designed to 30-year(or more)manufacturer's special project warranty requirements;however,the contractor will provide a 2-year manufacturer's NDL warranty and a 30-year proper mechanical attachment.
<br /> material-only manufacturer's warranty in addition to a 5-year contractors workmanship guarantee.
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<br /> Alternate 1 Roof Recover of Area A will consist of: Extend all new membrane flashing up and over perimeter parapet wall under metal edge cleat to cover beyond the exterior of the wood nailer/parapet transition by 1'/z"minimum. N
<br /> • 60 mil TPO membrane in lieu of 80 mil TPO membrane(deduct) Extend all new membrane flashing under roof metal edge to cover beyond the exterior of the wood nailer/parapet transition by 1 W,minimum. 00)
<br /> • 25-year(or more)manufacturer's special project warranty requirements;however,the contractor will provide a 2-year manufacturer's NDL warranty and a 25-year material-only manufacturer's warranty in _
<br /> addition to a 5-year contractors workmanship guarantee. Provide walkpads at the base and top of ladders,stairs,at roof access doors,at other roof access points,and at all serviceable mechanical unit doors or access panels. m P
<br /> • Scope from the Base Bid to remain the same unless otherwise noted. The use of"penetration Pans"or" itchpockets"is not permitted unless the geometry of multiple penetrations is not sufficient for field wrapping and without prior owner approval. F � Z�—
<br /> es O_Alternate 2 Roof Replacement of Area A will consist of: 9
<br /> All roof deck penetrations and perimeter edges of the roof section will be required to receive a reinforced fire-stop sealant to prevent air and moisture drive into the new roof system.
<br /> • Remove existing roof membrane assembly and flashings to expose the structural roof deck. W Uj +-•
<br /> • Furnish and install new 80 mil white TPO membrane with mechanically attached induction welded fasteners(8,12,16 min)OR in-seam fasteners at 6"o.c. All wood supports for electrical conduit and gas line supports must be replaced with new Caddy,Mire,or equal premanufactured units to accommodate the new roof system. _ a
<br /> o Basis of Design Manufacturers:
<br /> • Carlisle,Johns Manville,Elevate All perimeter edge metal profiles must meet ANSI/SPRI ES-1 wind design requirements for FM Global and included in the membrane manufacturer's warranty for the minimum of 30 years including wind and (� O
<br /> • Furnish and install a new W'ASTM C 1289 Type II Class 4 Grade 2(100+psi)CGF of iso anurate HD cover board,mechanical) fastened. performance. m O
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<br /> • Furnish and install new ASTM C 1289 Type II Class 2,Grade 2(20 psi)or Grade 3(25 psi)polyisocyanurate insulation,R-30ci,mechanically fastened. i a W
<br /> • Contractor is required to perform fastener pull testing. All new metal flashings for RTU counterflashing,cool stack base flashings,rain hoods,miscellaneous vertical wall flashing terminations,perimeter wall counterflashing,reglet metal,through wall and overflow wall
<br /> • Premanufactured tapered organic faced ISO insulation units are to be used at crickets and saddles to promote positive water flow to the roof drains.Provide additional tapered insulation as needed to prevent scuppers are to be fabricated from 302/304 stainless unless indicated differently in the contract plans. a
<br /> low spots and ponding water. a
<br /> • Furnish and install 6"wide yellow safety stripe 10'from roof perimeter where parapet walls are less than 42"tall. All dissimilar metals to be separated by paint coat to avoid electrolytic reaction. ` City of Everett Permit Review
<br /> • Furnish and install new roof hatch with curb-mounted safety rail system. All stainless and copper metal field fabricated seams are to be soldered unless seam is indicated to be an expansion joint. EVERETT Status: Reviewed for Permit >
<br /> • Furnish and install manufacturer's standard walk pad at the roof access point and serviceable rooftop unit access doors.
<br /> Pre-finished galvanized or aluminum metals are to be sealed using approved sealant joints. 04/30/2024 1 1:52:05 AM
<br /> • Furnish and install new ES-1 metal coping in like kind with existing.Color to be selected by Owner.Add new wood nailer at low parapet walls as needed to provide manufacturer's minimum required flashing 5 LCLU
<br /> height.Wrap new membrane up parapet walls and wrap overtop to terminate under new coping. All metal fabrications are to be completed using the latest SMACNA or copper and common-sense methods to resemble the construction details.Hem all metal edges. n C
<br /> • Replace collector heads and downspouts at scuppers in like kind with existing. LLI
<br /> • Replace wood equipment supports with new rubber-based,adjustable equipment supports on protection pads. U W
<br /> All roof curbs are to meet the minimum flashing height requirements pre-approved by the new roof system manufacturer for the special project warranty.All required disconnections,reconnections and capping of Q
<br /> Replace all existing pitch pockets with liquid flashing detail.All new penetrations shall have liquid flashing.Pitch pockets will be accepted only with prior approval from Roof Designer.
<br /> mechanical,electrical,and plumbing equipment is to be completed in a safe working condition and shall be performed by a contractor licensed to perform the specified or indicated work. C
<br /> • Replace skylight/smoke vents,including burglar bar fall protection,in like kind with existing. W W I)
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<br /> Contractor is to remove existing roof assembly at areas of deck deflection>3/4"to check deck and structure for damage.
<br /> All mechanical,electrical and plumbing work to be performed by a licensed trade contractor within the jurisdiction of the contract facility's address. f�
<br /> • Contractor is to remove abandoned curbs and penetrations.Coordinate with Owner. (r) J
<br /> • Coordinate with Owner and Owner's MEP contractor to raise RTUs and curb heights as needed to meet the manufacturer's minimum acceptable vertical flashing height and meet increased roof height. Temporarily remove all rooftop equipment restin on roof surface or on existing equipment ads.Reinstall over walkpads,or raised to an alternative support curb,as shown in the contract plans when roofing work is z
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<br /> • The base bid roof system will be designed to 30-year(or more)manufacturer's special project warranty requirements;however,the contractor will provide a 2-year manufacturer's NDL warranty and a 30-year complete. W Z
<br /> material-only manufacturer's warranty in addition to a 5-year contractors workmanship guarantee.
<br /> General Notes: All security cameras,if any,must remain operational during the new roof installation. Z
<br /> All work is to be coordinated with the owner's designated representative and facility manager.
<br /> Any coded notes are not intended to be strictly limited to the areas identified and shall apply elsewhere as the coded condition applies. If a condition contradicts the code,the contractor is directed to submit a formal All lightning protection,if any,must remain intact during construction.Any dismantling of the cabling may require the contractor to re-certify the LP loop.Contractor is required to provide a photo catalogue of the JOB NO: 70540
<br /> request for information. existing conditions prior to commencement of work.
<br /> DATE: 11/15/23
<br /> Architectural symbols and abbreviations are referenced and defined in the legend. DRAWN: is
<br /> All roof drains,wall drains,exterior ground leaders and scuppers must be water tested prior to commencement or mobilization for roof construction.The owner/consultant must be notified immediately of any drains or
<br /> The contractor is responsible for providing documentation after asbestos abatement is completed,including a general narrative of the asbestos oversight work completed with pictures if applicable;documentation on ground leaders found to be clogged.Contractor must document all testing and provide confirmation that all drains are clear prior to commencement of the new roof contract work. CKD BY: JT
<br /> the licensed personnel that provided the oversight for the work;copies of any oversight sampling needed or required;and copies of final disposal manifests. Everett 1
<br /> FILENAME:
<br /> It shall be the responsibility of the contractor to locate all existing utilities whether shown herein or not,and to protect utilities from damage.The contractor shall bear all expenses of repair or replacement of utilities Inspect all heater stacks(b-vents)and replace defective/rusted piping above the roof with new 302/304 stainless steel insulated units to fit existing extensions. SHEET SIZE: 24"x 36"
<br /> or other property damaged by operations in conjunction with the execution of the work.
<br /> All roof top condenser units are to be secured to the existing or new roof curbs in accordance with new FM Global requirements for roof top wind securement. SHEET 2 of a
<br /> The consultant and owner are not responsible for the acts and omissions of the contractor,subcontractors,or material suppliers including but not limited to the following:safety precautions/program and their
<br /> enforcement,construction means and methods,construction techniques,sequencing and procedures employed by the contractor,and subcontractors,the manufacturers'published requirements,procedures,verbal All HVAC and RTU curbs,ductwork,electrical penetrations and gas supports shall be adjusted to accommodate the new roof insulation thickness.All roof curbs shall meet a minimum vertical height above finished roof,
<br /> directions documented and undocumented from the manufacturer regarding application techniques or procedures from their staff-issued to the contractor or subcontractors on site. acceptable to the manufacturer,unless approved in writing by roofing manufacturer and design consultant. N1 .0
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