Attachment_1_-_Statement_of_Work.docx

SCOPE OF SERVICES

ROOF REPAIRS

BUCKEYE BUILDING

SCOPE OF SERVICES

NATIONAL MALL AND MEMORIAL PARKS

ROOF REPAIRS BUCKEYE BUILDING

BACKGROUND

The Buckeye Building is located at 750 Buckeye Drive SW and utilized by both Park Interpretation and Education staff and DC Circulator staff. The building is a large steel framed, metal sided and metal roofed structure, with the garage portion being approximately 20ft tall and the office section approximately 12ft tall. The office section is attached to the southwest corner of the garage section. Currently, the seams along the metal roof panels over the offices have started to deteriorate, and approximately 7,315 SF of the roof is no longer waterproof. There have been several attempts to patch and prevent leaks, but the issue continues to persist.

1. PURPOSE

This project will restore the weatherproof seal for the roof section over the offices (approximately 7,315 SF) at the Buckeye Building. Project work will include removal of existing metal roofing system, installing a structural steel roof decking, installing polyiso insulation board, installing a single layer roofing membrane and sealing all the penetrations 6” above the roof line with same material.

2. LOCATION

The Buckeye Building is located at 750 Buckeye Drive SW, Washington, DC, 20024

3. SCOPE OF WORK

Independently, and not as an agent of the government, the contractor shall provide the National Park Service, with all labor, supplies, materials, equipment and travel, necessary to perform the work described in this contract for the National Mall and Memorial Parks. The work shall include but is not limited to replacing the roof of the Buckeye Building with approved materials. The contractor will provide a quote that describes the Thermoplastic Polyolefin (TPO) or Ethylene Propylene Diene Terpolymer (EPDM) system that will be installed and the process by which it will be installed. Submit materials in quote. The following requirements must be followed when submitting quote.

A. Existing metal roof to be removed and replaced with a structural steel decking without disturbing the existing fiberglass insulation.

a. Decking shall be a minimum of 22-gauge, Type B steel roof decking

b. Decking shall be mechanically attached.

c. Structural ridge plates shall be used to bridge the two slopes.

d. Relocation of wire and conduit shall be done to minimize the amount of protrusions and/or protrusion locations during the installation of new decking.

B. Roof top units shall remain operational and intact during this project

a. Windscreen shall be removed around the units, reconfigured, and reinstalled.

b. Units shall be blocked up and existing framework under them shall be removed (this framework is excessive and was not replaced when units were upgraded)

c. New pedestals shall be created for the units to sit on.

d. When creating the new pedestals and wind screen for the units, reducing the amount of roof penetrations shall be a top priority.

C. First layer of polyiso insulation board shall be mechanically fastened to the steel decking. Second layer shall be adhered to the first layer.

a. All exposed insulation must be protected and covered to prevent invasive pests.

D. Roof membrane shall be adhered to the iso board using industry best practices.

a. Membrane shall be white or black in color.

b. All penetrations shall be sealed at least 6” higher than the roof deck.

c. No “peel and stick” joints shall be accepted.

d. If TPO is used, all seams, corners, and flashing shall be heat welded.

E. Edges of roof above gutters must have proper flashing with a drip edge to ensure the flow of water does not enter the interior of the building or the insulated area.

F. New fascia shall be installed on all sloped edges.

a. Color shall match existing fascia/metal siding.

G. Install walkway to rooftop units from designated access point.

a. Access point will be above the access ramp to the entrance on the south side of the building.

b. Walkway shall be walk pads designed for the type of membrane used and installed using industry best practices.

c. Walkway shall be a different color to help identify it as the walkway

OTHER REQUIREMENTS:

H. Preserve and protect existing trees and plants on and adjacent to the site. Any damage to turf/vegetation must be returned to the condition it was with the same materials before project start. Do not allow vehicular traffic or parking.

I. Execute daily cleaning to keep the work, the site and adjacent properties free from accumulations of waste materials, rubbish and windblown debris resulting from construction operations. Dispose of at legal disposal areas away from the site. Provide on-site containers for the collection of waste materials, debris and rubbish. Locate the containers in a location approved by the Contracting Officer. Burning of debris on construction site is prohibited.

J. No signs will be erected or identified with this project.

K. FINAL CLEANING: Execute prior to final inspection. At time of final inspection, project shall be thoroughly clean and ready for use. Clean exterior surfaces exposed to view; remove temporary labels, stains and foreign substances; polish transparent and glossy surfaces; vacuum soft surfaces. Clean equipment and fixtures to a sanitary condition; clean or replace filters of mechanical equipment. Clean roofs, gutters, downspouts and drainage systems. Clean site; sweep paved areas; mow and/or rake clean other surfaces. Remove waste and surplus materials, rubbish and construction facilities from the project and from the site. Restore or refinish surfaces of existing facilities that are marred, scratched, or damaged due to the work of this contract to match original condition.

L. Provide all warranty documents for materials and systems. Minimum workmanship warranty shall be 10 years and minimum material warranty shall be 20 year.

M. Metal roofing that is removed and all other scrap metal shall be sent in for recycling, coordinated by contractor. Contractor will provide report on all recycled materials documenting location of recycling center, nature and amount (weight) of recycled materials to COR with final invoice.

BID OPTION

N. Quote should also include an option to remove 100% of existing fiberglass insulation and install an extra layer or thicker layers of iso board in the case of extreme deterioration or pest infestation.

a. This option shall meet the current code requirements of the International Building Code or R38, whichever is greater.

4. GOVERNMENT FURNISHED PROPERTY

Access to site will be given for inspection and when work is scheduled. The Government will not furnish any utility services accept what is accessible on site at the building, i.e. the water and electric that is in the building.

5. COORDINATION AND SCHEDULING OF WORK

All work is to be scheduled and coordinated through the Contracting Officers Representative. Work shall be scheduled in advance so that proper access to the area can be provided.

image1.jpeg image10.jpeg image2.png image20.png