WesleyanUniversity

SCOPE OF WORK

LOWRISE B9 / B10 – ROOF REPLACEMENT PROJECT

233 WILLIAM STREET

Part 1 – General

1.1Related INFORMATION, documents and requirements

  1. ReferenceMM FY15 Project Manual dated January 20, 2014 for a complete and all inclusive summary of the project scope requirements.
  2. This is anunoccupied undergraduatemasonry / wood framed apartment unit. Adjacent units will be unoccupied; however, surrounding residences are private and occupied. Contractor shall be cognizant and respectful of the surrounding residences.
  3. Contractor shall coordinate the placement of cranes and all other heavy equipment with the Owner’s Representative prior to the start of work. Contractor shall protect turf, concrete walks and pavement as required. Damaged turf, concrete walks and pavement shall be repaired by the contractor at no cost to the Owner in accordance with the attached specifications.
  4. Contractor shall protect all surrounding areas, plants, shrubs, trees, etc. from damage and shall be responsible for any required temporary protection during the work. Any damaged plants, shrubs, trees, etc., shall be replaced in kind at no expense to the Owner.
  5. Contractor shall protect exterior building facade from damage for the duration of the project. Contractor shall utilize protective coverings.
  6. Removal of debris is to be disposed of in contractor supplied dumpsters at a centralized location. Coordinate dumpster location with Owner’s Representative prior to the start of work. Protect pavement or turf areas beneath dumpster with plywood. Contractor shall repair any damaged pavement or turf areas resulting from dumpster placement or removal at no cost to the Owner.
  7. Contractor shall meet or exceed all OSHA fall protection requirements. Contractor shall also adhere to all WesleyanUniversity fall protection requirements as outlined in the project manual.
  8. Contractor shall protect exposed roof surfaces at the end of the work day as required to prevent water from entering the interior of the building. Contractor shall be responsible to restore the interior surfaces to their original condition should damage occur.
  9. Contractor shall use a complete roofing system utilizing all components by a single source Manufacturer.
  10. Ponding water 48 hours after precipitation shall not be an acceptable condition and shall be resolved and corrected by the contractor at no cost to the Owner.

1.2HAZARDOUS MATERIAL COORDINATION

  1. Existing roof cross section has been tested and is comprised of the following:

Reference AmeriSci PLM bulk asbestos report dated 6/19/2014.

Pea gravel ballast: N/A

  • Multiple Ply Sheets (designated as roof field #1 & #2):Negative for asbestos
  • Roof field insulation: Negative for asbestos
  • Black Paper (multiple layers): Positive for asbestos
  • Resin paper: Negative for asbestos

Wood Sheathing Substrate: N/A

The black paper has tested positive for asbestos and shall be properly abated anddisposed of in accordance with all federal, state and city guidelines.

1.3SCHEDULE

  1. General Project Schedule

Construction Start Date: Upon award

Project Completion Date: August 5, 2014

1.4submittal / shop drawing requirements:

1Prior to the start of work, contractor shall submit product data sheets and roofing shop drawings that layout the tapered insulation requirements and also identify each different roofing condition that exists along with the proposed manufacturer’s detail being used to address these areas to ensure a minimum 20 year manufacturer’s warranty. The drawings shall include the following details at a minimum:

  • Tapered insulation drawings based on 2” of a flat insulation base and a minimum slope of ¼” per foot over the 2” of flat insulation. Tapered insulation slopes shall be designed to slope to the existing roof drain.
  • Proposed single ply EPDM system details.
  • Edge metal / fascia system details.
  • Roof curb detail showing height of new curb to accommodate exhaust fans.
  • Detail showing extension of existing vent pipes.

2Contractor shall provide all other submittals in accordance with the project specification requirements.

1.5MATERIALS

1.New EPDM roof system shall be Rubbergard EPDM by Firestone Building Products, or approved equal.

1.6 SCOPE REQUIREMENTS

  1. Remove and dispose of existing pea gravel ballast. Remove existing multi-ply roofing system down to wood substrate (Note: Contractor shall perform all demolition activities in accordance with Wesleyan University’s Construction Waste Management guidelines outlined in section 01505.Be sure to properly abate asbestos containing portion of roof as specified).
  2. Remove and recycle perimeter gravel stop within the designated project area.
  3. Install new Firestone RubberGard fully adhered 60 mil single ply EPDM roofing system with tapered insulation in accordance with manufacturer’s installation details and specifications as required to obtain a 20 year warranty. Tapered insulation shall have a 2” flat base with tapered insulation installed over the base with a minimum design slope of ¼” per foot tapering to the roof drain. Install perimeter 2x6 pressure treated wood blocking as required to accommodate the height and installation of the tapered insulation system and new edge metal system.
  4. Install new Firestone AnchorGard edge system around perimeter of roof. Height of new edge metal shall be a minimum of 8” to cover the additional height of the tapered insulation / EPDM system. Provide Kynar paint finish - submit manufacturer standard colors to Owner for approval.
  5. Removeexisting roof exhausters (total of 4). Install new ACME Model LQV gravity relief / supply vents or approved equal. Provide birdscreens and curbs to extend a minimum of 12” above finished tapered insulation. Match existing fan throat diameter and area.
  6. Kitchen exhaust fan has been abandoned. Contractor shall verify which exhaust fans currently service the bathrooms and shall eliminate the kitchen exhaust fan. Frame and infill kitchen exhaust fan penetration in deck.
  7. Extend bathroom exhaust fans a minimum of 12” above finished tapered insulation (total of 2). Provide new exhaust fan covers with bird screens/louvers. Provide related mechanical work required to complete the extensions.
  8. Extend all existing plumbing vent pipes a minimum of 18” above finished tapered insulation (total of 2).
  9. Remove existing roof drain. Install new Series 1000 general purpose roof drain with low profile dome and deck plate by JAY R. Smith Manufacturing or approved equal. Coordinate new roof drain with existing drain dimensions and conditions. Tie into existing piping in 2nd floor bedroom below. Provide all plumbing work as required to tie into existing drain. (Note: roof drain piping in 2nd floor bedroom is accessible – drywall has been removed for access. Reference photo sheets).
  10. Base bid shall include the replacement of two (2) 4’x8’ sheets of 5/8” plywood roof sheathing.
  11. Contractor shall notify Owner immediately if any additional rotted or deteriorated sheathing is uncovered during the removal process. Contractor shall provide a unit price on the designated space in Proposal Form 00300 to furnish and install new 5/8” exterior grade plywood roof sheathing (Note: Locations and sheet quantities must be approved by the Owner prior to installation. Unit price shall be for one (1) 4’x8’ sheet of 5/8” exterior grade plywood sheathing).
  12. Contractor shall install flashing and boots over all vent pipes and roof penetrations.
  13. Contractor shall provide final cleanup of all roofing material around entire project site.

End of Document

Major Maintenance FY 1500200C-1

Project No. 201500000006/17/2014