FCcoCRL_GH_Ridge_Vents_13125_20161109.pdf

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SECTION 13125

Repair Ridge Vents in Greenhouses A, B, C, D, and Aisles

1. GENERAL:

a. The work consists of furnishing all labor, materials, and equipment needed to improve the operation of the Wadsworth rack and pinions on all the roof vents in the four greenhouses at the Crops Research Laboratory Greenhouses A, B, C and D, with shared corridors between A&B and C&D in Fort Collins, Colorado.

b. It is recommended that the Contractor visit the job site to identify the site condition, location of electrical service main and panel, availability of utility services and other data required to perform the work.

c. Repairs required:

1. Lubricate all rack and pinions and shaft hangers in the roof vents.

2. Visually inspect and tighten all loose set screws, sash brackets etc.

3. Align and adjust all Rack and Pinions for proper operation.

4. Remove and replace any damaged rack and pinions or any that show excessive wear.

5. Verify operation of the drive units, adjust travel limits for proper open/close.

6. Replace one vent motor.

d. Submittals required for Rack and Pinion components and motor.

2. PRODUCTS:

a. Greenhouse Roof Vent System Repair by Zone or GH Bay:

Bay / Zone

Work to be performed Materials needed

A1 Lube roof vents/ side vents, inspect, verify operation

Grease

A2 Lube roof vents/ side vents, inspect, verify operation

Grease

A3 Lube roof vents/ side vents, inspect, verify operation

* Replace 1 Rack/pinion east side

Grease 1 Wadsworth R/P

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B1 Lube roof vents/ side vents, inspect, verify operation

B2 Lube roof vents/ side vents, inspect, verify operation

Grease

B3 Lube roof vents/ side vents, inspect, verify operation Replace 4 Rack/Pinion west side

East slope motor does not operate

Grease 4 Wadsworth R/P

B4 Lube roof vents/ side vents, inspect, verify operation Replace 2 Rack/Pinion west side

Grease 2 Wadsworth R/P

A-B Connector

Lube roof vents/ side vents, inspect, verify operation

FULL REPLACEMENT OF

ALL RACK AND PINIONS

Grease 44 Wadsworth R/P

C1 Lube roof vents/ side vents, inspect, verify operation Replace 2 Rack/Pinion on west side

Grease 2 Wadsworth R/P

C2 Lube roof vents/ side vents, inspect, verify operation Roof vents do not operate

Grease 2 Wadsworth R/P

D1 Lube roof vents/ side vents, inspect, verify operation Replace 4 Rack/Pinion on west side Replace 2 Rack/Pinion on east side

East motor does not operate

Grease 6 Wadsworth R/P

D2 Lube roof vents/ side vents, inspect, 1 Wadsworth R/P

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Replace 1 Rack/Pinion west side

D3 Lube roof vents/ side vents, inspect, verify operation Replace 2 Rack/Pinion on west side

East motor does not operate

Grease 2 Wadsworth R/P

D4 Lube roof vents/ side vents, inspect, verify operation.

Roof vents do not operate

Grease

D5 Lube roof vents/ side vents, inspect, verify operation.

Replace 4 Rack/Pinion on east side Replace 4 Rack/Pinion on west side

Grease 8 Wadsworth R/P

D6 Lube roof vents/ side vents, inspect, verify operation *Replace 4 Rack/Pinion on west side

Grease 4 Wadsworth R/P

C-D Connector

Lube roof vents/ side vents, inspect,

b. Vent Motors that are noted above as not operational are anticipated to be torqued out and that adjustments to the vent to relieve the condition will resolve the problem, 67% of the time. But replacement of 33% of the vent motors is included in this scope of work. They are to be furnished and replaced by Contractor. Motors are to be sized to operate the vent appropriately and efficiently.

c. Rack and Pinion operators not operating and not repairable shall be replaced by the contractor. Replacement components are to be sized to operate the vent

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d. Quantity of Rack and Pinion vent openers and closers to be replaced are GH A has 1; GH B has 6; Aisle between GHs A & B has 44; GH C has 4; GH D has 21; Aisle between GHs C & D has 0.

a. 76 Rack and Pinions are to be replaced. Photos of some of the Rack and Pinion vent openers and closers are attached.

b. Quantity of existing Rack and Pinion vent openers and closers: GH A has 48; GH B has 48; Aisle between GHs A & B has 48; GH C has 58; GH D has 58; Aisle between GHs C & D has 58.

3. EXECUTION. Repair in accordance with the Manufacturer's recommendations and in compliance with the local code authorities.

a. Additional Services:

1. Coordinate project kick off meeting for schedule review and planning

2. Submit safety plans and required project documents

3. Provide vent repair parts/materials (vent motors are included)

4. Communicate expected lead time for materials and parts

5. Track materials and coordinate deliveries

6. Schedule crew arrival with USDA Greenhouse Facility Manager

7. Support Installation planning (Room availability coordination)

8. Installation Verification / Owner Representation

9. Warranty Representation & Client Support

b. Secondary Conditions.

1. Price is based on prevailing Government wage rates

2. Considering industry standard safety measures for elevated work.

3. Additional trip charges may apply if project is delayed.

4.

5. Work areas are expected to be free of plant material & obstructions

6. Budget does include precautions or costs for working over research

7. Materials to be received and stored. If crew is not on site

8. Owner is responsible for disposal of rack and pinions that are removed.

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c. Exclusions

1. Site preparation (moving of any obstructions, plants, etc.), electrical, plumbing lines or hook-ups.

d. AVAILABILITY OF GREENHOUSES.

1. One GREENHOUSE Wing shall be available at a time.

A. NOTIFICATION. The Contractor shall notify the COR one working day prior to beginning work on each Greenhouse Wing.

B. MOVEMENT. The Government shall remove the plants from each Greenhouse Wing to the Greenhouse Wing across the corridor, making each Greenhouse Wing available for use by the Contractor.

C. NOTIFICATION. Near the Contractor's completion of the each Greenhouse Wing , the Contractor shall notify the COR of the completion time within 4 hours but no less than 2 hours prior to it.

D. MOVEMENT. The Government shall remove the plants from each Greenhouse Wing to the completed Greenhouse Wing in approximately 4 hours. The plant moving can occur on week days between 8:00 am and 10:00 pm. The Contractor can then use the next Greenhouse Wing.

BID FORM:

BASE ITEM IS TO REPLACE THE DAMAGED EAST SLOPED ROOFS,

APPROXIMATELY 8400 SQUARE FEET OF SLOPED ROOF SURFACE

AREA.

OPTION ITEM 1 IS TO GREASE 318 RIDGE VENT OPERATORS AND REPLACE

76 RIDGE VENT OPERATORS AND 1 MOTOR AS SPECIFIED.

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