Statement of Work SOW Headhouse 7 Roof .docx

Statement of Work For Built Up Roof Replacement On Headhouse Portion of Building 7

Section 1 GENERAL

1.1 SCOPE OF WORK. The Contractor shall provide all material, personnel, equipment, tools, fuel and other items or services necessary to replace the built-up roof covering the headhouse portion of building 7. This project is located at the USDA Sugarcane Field Station, 12990 Hwy 441N, Canal Point, FL 33438. The description of the scope of work is defined in this Statement of Work (SOW) including Exhibit1. The Contractor is required to submit three copies of all submittals for materials where requested. Submittal copies will be sent to the Contract Officer Representative, Contract Officer and the Sugarcane Field Station Administrative Officer for approval.

1.2 PHYSICAL SECURITY. The Contractor shall be responsible for safeguarding all Government property. Prior to the end of each workday, the Contractor is required to secure their equipment and leave the site prior to lock down of the facility. The Government is not responsible for loss or damage to the Contractors equipment during the contract.

1.3 HOURS OF OPERATION. Normal hours of operation for the USDA Sugarcane Field Station are 7:30am to 4:00pm, Monday through Friday. The Contractor’s scheduled performance of these services must fall within this designated time period unless approved by the COR, Contracting Officer and the facility Administrative Officer.

1.4 PROJECT SCHEDULE AND DURATION

1.4.1 The Contractor shall submit a schedule for construction. The schedule shall detail each significant phase of construction and give and estimated time for reaching each milestone. The Contractor shall send a copy of the schedule to the COR, Contracting Officer and the USDA Sugarcane Field Station Administrative Officer.

1.4.2 The Contractor shall have 30 days from the “Notice to Proceed” to complete the project.

Site Visit. Contractors are encouraged to visit the site and be escorted by a government representative to confirm locations, dimensions, and conditions of the project before a bid is submitted. The site visit shall be for the purpose of observing first-hand any conditions relevant to the completion of this project. No consideration will be given to claims based on lack of knowledge of existing conditions, except where contract documents make definite provisions for adjustment in cost or extension due to existing conditions not readily foreseeable.

To schedule a site visit, please contact George Carpenter, Phone: 561-261-6588, Email: george.carpenter@usda.gov.

Section 2 GOVERNMENT FURNISHED PROPERTY AND SERVICES.

2.1 GENERAL. The Government shall provide, without cost, the facilities, equipment, fuel and materials listed below:

2.1.1 The Government will provide utilities where available.

2.1.2 Government restrooms will be available.

2.1.3 The Government will not provide any materials, equipment or fuel.

2.2 SERVICES. The Government shall provide, without cost, the services listed below:

2.2.1 No Government services will be provided.

Section 3 CONTRACTOR FURNISHED ITEMS AND SERVICES.

3.1 GENERAL. Except for those items or services specifically stated to be Government-furnished in Section 2, the contractor shall furnish everything required to preform this Statement of Work. The Contractor shall be on site to accept delivery and unload all materials. The Contractor is responsible for removing all construction material, debris, and abandoned appurtenances.

EXHIBIT 1

Building 7 is a combination, greenhouse headhouse. The headhouse is a concrete block structure with a flat roof. The flat roof is covered with an asphalt, felt and gravel roofing system. The roof measures 26ft. 4in. long by 18ft. 6in. wide, at the widest point. There is a parapet wall that separates the head house from the greenhouse. The parapet wall is 18ft. long. Also, the parapet wall narrows the width of the flat roof to 16ft. 6in.

The Contractor shall provide all labor, materials, tools, equipment, fuel and services to perform the following work to replace the built-up roofing system of the headhouse portion of Building 7: (1) Remove the existing built-up roofing material, down to the concrete roof deck. (2) Remove the existing copper gravel stops. (3) Remove the skylight and curb. (4) Remove the 2in X 4in boards, covered by the gravel stops, around the perimeter of the roof edge. (5) Remove all roofing material and flashing material from the parapet wall, if there is any cant material at the intersection of the roof deck and the parapet wall remove that also. (6) Clean the concrete roof deck and prepare for new roofing. (7) Plate over the hole in the roof where the skylight was removed. (8) Cut and install new pressure treated 2in. X 4in. lumber around the perimeter of the roof. (9) Install new copper gravel stop. (10) Cut and install new cant material at the intersection of the roof deck and the parapet wall. (11) Install flashing and counter flashing along the length of the of the parapet wall. (12) Install a new 4-layer 30lb. felt and hot asphalt built up roofing system. (15) Top the new 4-layer built up roofing system with a flood coat and gravel finish.

SUBMITTALS

The contractor shall Submit 3 copies of information and specifications regarding the listed material. One copy goes to the COR, one copy to the Contracting Officer and one copy to the Canal Point Administrative Officer. The submittals will be reviewed for this construction.

The material listed below is referenced for performance quality only. The Contractor may submit on equal performing material.

1. Galvanized Steel Gravel Stop

2. Galvanized Steel Flashing

3. 30Lb Felt

4. Type 4 Roofing Asphalt

5. DAP Butyl Rubber Caulking

DEFINABLE FEATURES OF WORK

1. Site Demolition. The Contractor shall remove the existing built-up roofing system down to the concrete decking. The Contractor shall remove all gravel stop and flashing material. The Contractor shall remove all cants and 2in. by 4in. lumber that lines the perimeter of the roof and is under the gravel stop (fascia). The Contractor shall remove the sky light and the sky light curb. The Contractor will be responsible for properly disposing of the demolished roofing material. The Contractor will not use USDA Sugarcane Field Station dumpsters for disposal of this material.

2. Cleaning Concrete Deck. The Contractor shall sweep or blow the concrete deck clean. The shall be free of gravel, dirt or dust that may interfere with the placement of the new roofing system

3. Plating Over the Skylight Hole. The Contractor shall plate over the hole in the roof that remains after the removal of the sky light and curb. The plating material will be compatible with the new roofing system. The plating will be flush with the concrete deck. The plating will be capable of supporting a person of 200lb. without caving, buckling or sagging. The plating support system will not extend down past the interior ceiling of the building.

4. Installing 2in. by 4in. Lumber Around the Perimeter of the Roof (Fascia) The Contractor shall replace the 2in. by 4in. fascia that surrounds the perimeter of the roof. The Contractor shall replace the existing lumber with Pressure Treated lumber. The lumber will be cut and installed so that there are no gaps between the installed pieces. The existing lumber is attached to the buildings tie beam using bolts, washers and nuts. The new lumber will be installed using the same method. The lumber will be counter sunk so that the bolts, washers and nuts do not protrude out past the 2 in. by 4in. lumber. If an existing bolt is broken during demolition or is deteriorated to a point that it cannot be reused, the Contractor shall grind the stub flat with the wall, then install a new stud adjacent to the bolt. The new stud shall be the same diameter as the existing bolts. The stud shall be installed by drilling the appropriate size hole 3 1/2in. to 4in. deep, cleaning the hole free of dust, then epoxying the stud into place.

5. Installing Cants. The Contractor shall use cants made from 4in. by 4in. lumber cut diagonally at a 450 angle. The lumber shall be straight and fit tightly to the concrete roof deck and the base of the parapet wall. The cant shall extend the length of the wall, 18ft., with no gaps between pieces.

6. Gravel Stop. The gravel stop shall have a 5in. face and a 4in. apron. The gravel stop shall be at a minimum 22-gauge thickness galvanized steel. The gravel stop shall come in lengths lo less that 10ft. When the Contractor installs the gravel stop: in a given run the Contractor shall use lengths of gravel stop that have the least number of joints possible. (don’t use numerous short pieces on a long run) The gravel stop shall be attached to the fascia 2in. by 4in. by nailing through the apron of the gravel stop. Nails shall be no more than 8in. apart.

7. Flashing and Counter Flashing. The Contractor shall flash and counter flash the length and ends of the parapet wall. The flashing shall be minimum 22-gauge thick galvanized steel. The flashing shall extend 8in. up the parapet wall and out 8in. onto the flat roof deck. The flashing shall be counter flashed. The Counter flashing shall be a minimum 22- gauge galvanized sheet metal. The counter flashing shall extend down 4in. onto the flashing. The top edge of the counter flashing shall be bent 900. The bend shall form a tab 1/2in wide. The Contractor shall cut a groove in the parapet wall, 1 in. above and parallel to the top edge of the flashing. The groove shall be 1/8in. wide (the thickness of a masonry abrasive blade) and 5/8in. to 3/4in. deep. The contractor will fill the groove with Butyl Rubber type sealant. The 1/2in. tab of the counter flashing shall be inserted to the sealant filled groove. Excess sealant shall be removed. The counter flashing and flashing shall also be mechanically secured to the wall using appropriate screw fasteners or drive pins. Mechanical fasteners shall be spaced no more than 24in. apart.

8. Built-Up Roofing System. The Contractor shall install a 4-layer felt, hot asphalt, and gravel top layer roofing system. The Contractor shall use 30lb. felt and asphalt. The Felt shall be overlapped using the materials manufacturers specifications and installation instructions. Hot asphalt shall be moped on between each layer of felt. After the 4th layer is applied the Contractor shall put on a flood coat and finally a layer of clean washed pea gravel.

9. Clean Up. When the construction is finished, the Contractor shall clean up the construction site area. All excess materials, wrappers, boxes, containers and other construction debris shall be picked up and discarded. Any material that may have dripped, run, spilled or splashed shall be removed.

10. Inspection. At the completion of the project a designated representative of the USDA Sugarcane Field Station shall inspect the roof for defects, workmanship quality and cleanliness.

SOW by George Carpenter image3.jpeg image4.jpeg image5.jpeg image6.jpeg image1.jpeg image2.jpeg