MODIFICATION
Z -- Exterior cleaning and sealing
- Notice Date
- 1/20/2005
- Notice Type
- Modification
- NAICS
- 811490
— Other Personal and Household Goods Repair and Maintenance
- Contracting Office
- General Services Administration, Public Buildings Service (PBS), Columbia Property Management Office (4PMSC2), 1835 Assembly Street Suite 758, Columbia, SC, 29201
- ZIP Code
- 29201
- Solicitation Number
- RSC19420
- Response Due
- 1/28/2005
- Archive Date
- 2/12/2005
- Point of Contact
- Gracieta Jackson, Deputy PMC Director, Phone 803-253-3160, Fax 803-765-5309, - Darron Jackson Jackson, Accounting Clerk III, Phone 803-765-5583, Fax 803-765-5309,
- E-Mail Address
-
gracek.jackson@gsa.gov, Darron.Jackson@gsa.gov
- Small Business Set-Aside
- Total Small Business
- Description
- SCOPE OF WORK Contractor to furnish all labor, supervision, materials and equipment to perform all work required for pressure washing and sealing all exterior surfaces. At the C.F. Haynesworth Federal Building and Courthouse, 300 East Washington Street, Greenville, South Carolina. On site inspections may be made by contacting Grace Jackson (Assistant Director) at (803) 765-5581 or Ronnie M. Kelley (Construction Representative), at (864) 370-9294. Failure to visit the site before bidding does not relieve the Contractor of the responsibilities of this contract. Schedule Successful Contractor shall be provided a Notice of Award, but shall not begin work until a Notice to begin is issued. This Notice to Begin may follow the contract award by one month or longer. Under no circumstances shall the Contractor hold the Government liable for delays. After Notice to Begin is issued, Contractor shall have a thirty-day performance period to complete the installation. Liquidated damages shall be assessed at $100.00 for each day the work is not completed after performance period. Qualifications of the Contractor It shall be the Contractor??s responsibility to provide properly trained personnel for each and every craft performing work on this contract. Workmanship All work shall be coordinated and scheduled with the contracting officer (CO) or COR. The CO or COR has the right to reject any unsatisfactory or unsuitable material or workmanship. Any damage caused by the Contractor to the building(s), any of its contents or tenants shall be the responsibility of the Contractor to correct in a timely manner. Contractor shall schedule all painting, staining, varnishing, etc., for after normal building hours. Description of Work Exterior Cleaning: Clean exterior of building thoroughly to remove dirt residue and stains in order to prepare building services for sealant application. Repair damaged areas and open joints by repointing as necessary. Protect all areas surrounding building from overspray and cleaning products. Clean areas as per description in General Scope. Exterior Sealant: Apply sealant as per manufactures specifications. Apply each water repellent to test panels to determine appropriate strength, coverage rates, compatibility, effectiveness, surface preparation, application procedures, and desired results. Apply sealant as per description in General Scope. GENERAL This Section includes surface preparation, field cleaning and sealing of exposed exterior building surfaces. INTRODUCTION Many of the problems of brick masonry, brought to the attention of the Brick Institute of America over the past years, have resulted from improper cleaning methods. Some walls have been irreparably damaged as a result of a lack of attention to cleaning details and procedures. Cleaning failures generally fall into one of three categories: 1. Failure to thoroughly saturate the brick masonry surface with water before and after application of chemical or detergent cleaning solutions. Dry masonry permits absorption of the cleaning solution and may result in "mortar smear", "white scum", or the development of efflorescence or "green stain". Saturation of the surface prior to cleaning reduces the absorption rate, permitting the cleaning solution to stay on the surface rather than be absorbed. 2. Failure to properly use chemical cleaning solutions. Improperly mixed or overly concentrated acid solutions can etch or wash out cementitious materials from the mortar joints. They have a tendency to discolor masonry units, particularly lighter shades, producing an appearance frequently termed "acid burn" and can also promote the development of "green" and "brown" stains. 3. Failure to protect windows, doors, and trim. Many cleaning agents, particularly acid solutions, have a corrosive effect on metal. If permitted to come in contact with metal frames, the solutions may cause pitting of the metal or staining of the masonry surface and trim materials, such as limestone and cast stone. Before the actual cleaning of a project begins, all cleaning procedures and solutions should be applied to a sample test area of approximately 20 sq. ft. (1.9 m2). The effectiveness of the cleaning agent should be judged by inspection of the sample test area after a period of not less than one week after application. The size of the test area may be larger, depending upon the cleaning procedure. The indiscriminate use of muriatic acid or the wrong proprietary compound can cause unsightly, difficult-to-remove stains. Reactions of brick and cleaning solutions are not always predictable and thus it is safer to use a trial-and-error method on a small test area before committing the entire project to a set procedure. Minute quantities of certain minerals found in some fired clay masonry units and materials, such as manganese, added to color brick may react with some solutions and cause staining. Sample testing should be performed under conditions of temperature and humidity that will closely approximate the conditions under which the brickwork will be cleaned. Chemical cleaning solutions are generally more effective when the outdoor temperature is 50 oF (10 oC) or above. Pressurized Water Cleaning To cut labor costs, many cleaning contractors utilize pressurized water. Some pressure systems feature a pressure gun and nozzle equipped with a control switch. This setup permits the operator to apply solutions to a wall over 100 ft. (30.5 m) from the base unit. Other systems have two separate hoses - one with plain water and the other with a cleaning solution. Low pressure has been defined as 100 to 300 psi (700 to 2100 kPa), medium pressure as 300 to 700 psi (2100 to 4850 kPa) and high pressure as 700 psi (4850 kPa) or greater. A sand finish or a surface coating may be removed by pressurized water cleaning, resulting in a different appearance. Nozzle pressure in excess of 700 psi (4850 kPa) may damage brick units and erode mortar joints. The following procedure is suggested: 1. Select and test the cleaning solution on a sample area. Check the equipment for cleaning solution compatibility. For proprietary compounds, mix in accordance with the manufacturer's instructions. 2. Presoak wall. 3. Protect metal, glass, wood, limestone and cast stone surfaces. Mask or otherwise protect windows, doors, and ornamental trim from cleaning solutions. 4. Presoak or saturate the area to be cleaned. Flush with water, from the top down. Saturated brick masonry will not absorb the cleaning solution or dissolved mortar particles. Areas below should also be saturated in order to prevent absorption of the run-off from above 5. Application of cleaning solutions may be by a low pressure sprayer, 30 to 50 psi (200 to 350 kPa), or through the high pressure cleaning unit. 6. Permit the cleaning solution to remain on the wall for approximately 5 minutes. 7. Starting at the top, flush the wall down, as in the previous procedure. Caution: It is possible for solutions to be driven into the masonry when applied under high pressure, and become the source of future staining. However, if the walls are sufficiently saturated with water before the solutions are applied, the risk of penetration is reduced. Experience has shown that this cleaning method has a high probability of changing the appearance of sand molded brick, sand- faced extruded brick, and brick with glazed coatings or slurries applied to the finished faces. The brick manufacturer should be consulted on the use of high pressure water cleaning of such brick. SURFACE PREPARATION ******************************** Specifier Notes: Describe surface preparation of substrates required before application of water repellents. ******************************** A. Clean all dirt, oil, grease, mold, mildew, efflorescence, or any other coating or material from surfaces that interfere with penetration, performance, adhesion, or aesthetics of water repellents. Rinse thoroughly, using pressure water spray to remove cleaner residues. Allow surfaces to dry completely before application of water repellents. B. Repair, patch, and fill all cracks, voids, defects, and damaged areas in surface as approved by the COR. Allow repair materials to cure completely before application of water repellents. C. Seal all open joints. D. Allow new masonry and concrete repairs and repointed surfaces to cure before application of water repellents WATER REPELLENTS . This specification covers preparation, materials, services, and equipment required for the application of Water Sealant products for projects involving either old or new construction. Any substantial deviations shall be referred to the manufacturer or authorized representative. Product is manufactured in three strengths, which vary in solids content. The determination of which formulation is appropriate is dependent upon the porosity of the substrate. Surface type may be concrete, brick, block, stone, stucco, wood and other porous building materials, which allow penetration of the sealant. A. Surface Preparation: Contractor or Applicator shall be responsible for providing a clean, dry substrate free from oil, dirt, grease, efflorescence or any other coating which may inhibit penetration and adhesion of water repellent. This requirement applies to new construction, renovation or remedial projects. Substrate must be completely dry prior to applying product. B. Environmental Requirements: 1. Temperature: Product may be applied at any temperature providing that there is no frozen moisture present in the substrate. When applied at temperatures below 40 degrees Fahrenheit the product may cure at a slower rate. Optimal temperatures should be above 40?a F (5?a C) or below 95?a F (35?a C). 2. Do not apply material if the substrate is wet or contains frozen moisture. Allow substrate to dry for a minimum of 48 hours after rain or power washing. 3. Do not apply material during inclement weather or if precipitation is expected within 12 hours. 4. Do not use spray methods of application under windy conditions. C. Protection: 1. Special precautions should be taken to avoid fumes from entering the building being treated. Ventilation systems and fresh air intakes should be turned off and covered. 2. Protect shrubs, metal, glass, vehicles, and other building hardware from overspray. TEST PANELS A. Before full-scale application, review manufacturer??s product data sheets to determine the suitability of each product for the specific surfaces. Apply each water repellent to test panels to determine appropriate strength, coverage rates, compatibility, effectiveness, surface preparation, application procedures, and desired results. B. Apply water repellents to test panels in accordance with manufacturer??s written instructions. Allow 24 hours or until test panels are thoroughly cured before evaluating final appearance and results. Do not begin full-scale application until test panels are inspected and approved by the COR. Submittals: For each paint system specified, provide the following: 1. Material List: Provide an inclusive list of required coating materials. Indicate each material and cross-reference specific coating, finish system, and application. Identify each material by manufacture??s catalog number and classification. 2. Manufacture??s Information: Provide manufacture??s technical information, including label analysis and instructions for handling, storing, and applying each coating material proposed for use. Water Sealant: Penetrating silicone rubber water repellent for use on vertical or horizontal concrete, dense brick, and granite. Penetrates without altering the natural appearance of the substrate. Will not form a surface film or gloss. Inorganic, it is not affected by UV rays, salts, acid rain, etc. Breathable, it allows moisture vapor to escape while preventing liquid penetration. Flexible, it bridges hairline cracks and allows for building movement. Provides superior waterproofing protection. 1. Form: Liquid 2. Color: Clear 3. Active Substance: RTV Silicone Rubber 4. Percent Active Material: 5-15% 5. Flash Point: 105?a General Requirements All materials shall be approved by the CO or COR prior to purchase and installation. Materials delivered to the project site must be in manufacture??s original, unopened packages and containers bearing manufacture??s name and label. Alcoholic beverages shall not be permitted on premises. Anyone smelling of or impaired by, alcoholic beverages shall be immediately removed from premises and bared from working on this project. Tobacco products of any form shall not be used on premises. Use of such products shall result in immediate removal and dismissal from this project. Use of tobacco will only be permitted outside of building in an area designated only for this use by the CO or COR. ADA Requirements All alterations and materials, made, furnished and installed in this contract must meet or exceed all current ADA requirements for the handicap. Responsibilities Contractor is responsible for obtaining all licenses and permits. All applicable codes shall be followed. The Contractor should make every effort to visit the job site to acquaint himself with the existing conditions, as there will be no price adjustments after award because the Contractor failed to acquaint himself with the site conditions. Contractor is reminded that OSHA may visit Government sites and may impose Fines and Penalties. No tools, cleaning equipment or supplies belonging to GSA will be loaned to Contractor. Warranty and Guarantee All parts, work and material, supplied by the Contractor, shall be guaranteed for one year after acceptance by GSA (exclusive of Manufacturers warranty). Protection of Adjoining Areas The Contractor shall protect adjoining areas, sidewalks, roadways and pedestrian traffic from damage or injury. Contractor shall clean work area daily to remove debris daily to include cleaning corridor outside of work areas. The building cleaning staff is not responsible for cleaning behind contractor. Areas shall be as clean as it was before project began, on a daily basis Debris Removal Provide all labor, materials, and equipment required to clean and dispose of waste, dust, residue or spoil caused by work required in the work order on a daily basis or more frequently if deemed necessary by the Contracting Officer??s Representative (COR). Materials and items required to be removed but not permitted to be used in the contract work, and not to be stored, shall become the property of the Contractor and shall be removed form the building and premises after an inventory has been certified by the Government Representative. Before completing the work, the contractor shall remove from the work site and premises all rubbish tools, scaffolding, equipment and materials that are not the property of the Government. Upon completing the work and before requesting final inspection, the contractor shall leave the work area in a clean, neat, and orderly condition satisfactory to the Contracting Officer. The dumpster on site is not for Contractor use, Contractor shall provide his own dumpster. Working Hours The Contractor working hours shall be between 8:00AM and 5:00PM, in unoccupied space and after 5:00PM in occupied space, Monday through Friday. Due to Court schedule, Contractor may be forced to stop noisy operations and find it necessary to re-schedule this type of work after hours. All other hours shall be coordinated with the CO or COR no additional cost to the Government. Security All employees of the Contractor and Sub-Contractors shall be cleared, for security purposes, by the CO or COR to work on this project prior to starting. Upon award, Contractor shall submit attached Background Investigation form, Attachment, accompanied with a photo of the employee. Individuals, who do not pass the background investigation, shall not be permitted in the building. Prior to starting work, contractor shall receive written notification from the CO, of employees cleared to work on this project. Contractor will be also be responsible for furnishing an Asbestos Awareness Training certificate for all employees working in areas of the building that contain asbestos along with a signed original acknowledgement form of the location and type of asbestos present.. Contractor are encouraged to visit site. A walk through is scheduled on February 1, 2005 at 1:30PM.
- Place of Performance
- Address: C.F. Haynsworth FBCT, 300 E. Washington St., Greenville, SC
- Zip Code: 29601
- Country: US
- Zip Code: 29601
- Record
- SN00737760-W 20050122/050120212246 (fbodaily.com)
- Source
-
FedBizOpps.gov Link to This Notice
(may not be valid after Archive Date)
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