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PART 1: GENERAL
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| 1.1 |
Description |
| A. |
Work included: Chemically clean
the exterior brick and stone of the XXXXXXXX XXXXXXXXXX
House, City, State, where shown on the Drawings, as specified
herein, and as needed for complete and proper restoration. |
| B. |
Related Work: Documents affecting
work of this Section include, but are not limited to, General
Conditions, Supplementary Conditions, and Sections of Division
1 of these Specifications. |
| C. |
Work of this section includes the
furnishing of labor, materials and equipment necessary to
the cleaning of historic masonry structures (exterior). |
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| 1.2 |
Quality Assurance |
| A. |
All work shall be performed by
a Contractor with demonstrated experience in the cleaning
of historic architectural masonry. In addition the Contractor
shall use an adequate number of skilled workmen who are
thoroughly trained and experienced in the necessary crafts
and who are familiar with the restoration of historic buildings
and the methods needed for the proper execution of the work. |
| B. |
Upon request, the Contractor shall
submit to the Architect a written record of all projects
for which the Contractor has performed masonry cleaning. |
| C. |
Perform all work in compliance
with codes, standards, and regulations having jurisdiction. |
| D. |
All work shall be done in strict
accordance with the following publications: |
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1. Secretary of the Interior's
"Standards for Historic Preservation Projects" (1995).
2. Preservation Brief No. 1: "The Cleaning and Waterproof
Coating of Masonry Buildings" by Robert C. Mack.
3. Preservation Brief No. 6: "Dangers of Abrasive Cleaning
to Historic Buildings" by Anne E. Grimmer. |
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| 1.3 |
Submittals |
| A. |
Description |
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Make submittals required by the
Contract Documents, and revise and resubmit as necessary
to establish compliance with the specified requirements. |
| B. |
Quality Assurance |
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1. Substitutions will be considered
only when substantiated by the Contractor's submittal of
required data and when submitted within thirty (30) calendar
days after award of the Contract.
2. Do not substitute materials, equipment, or methods unless
such substitution has been specifically approved in writing
for this work by the Architect.
3. "Or equal": Where the phrase "or equal" occurs in the
Contract Documents do not assume that the materials, equipment,
or methods will be approved as equal unless the item has
been specifically so approved for this work by the Architect.
The decision of the Architect will be final. |
| C. |
Product Data |
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Within thirty (30) days after the
Contractor has received the Owner's Notice to Proceed, submit: |
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1. Materials list of items proposed
to be provided under this Section.
2. Manufacturers' specifications, literature and other
data needed to comply with the specified requirements.
3. The number of copies which are required to be returned,
plus one copy which will be retained by the Architect.
4. Accompany each submittal with a letter of transmittal
showing all information required for identification and
checking. |
| D. |
Samples |
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1. Test products approved for consideration
by the Architectural Conservator shall be tested at the
job. Locate masonry test areas as directed by the Architect
in unobtrusive and representative areas measuring approximately
sixteen (16) square feet. Test samples of adjacent non-masonry
materials for effect and necessity of masking and protection.
2. Furnish samples until approval has been obtained by
the Architect. Multiple tests of varying concentrations
shall determine the composition of the required cleaning
solutions. By single and multiple application of chemical
agents to existing masonry sample areas, determine both
the optimum duration of and the number of applications required
to complete the work to the satisfaction and approval of
the Architect.
3. The approved sample(s) shall be marked for identification
and retained. Sample(s) shall constitute a standard for
acceptance or rejection of completed work of this Section.
Material and test patches will be approved in writing by
the Architect.
4. Submit literature on water spray equipment for review.
5. All material and equipment not approved by the Architect
for work of this Section shall be prohibited on job site. |
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| 1.4 |
Regulatory Requirements |
| A. |
Contractor shall be responsible
for obtaining all necessary permits and the payment of associated
fees. |
| B. |
All activities shall be in strict
compliance with local and governmental regulations and codes.
Activities shall include but not be limited to, execution
of work, protection of property, and disposal of chemical
waste and residue. |
| C. |
As required by state requirements,
residual chemicals and water shall be contained and legally
disposed of in a suitably identified hazardous waste disposal
facility. |
| D. |
The following state agency will
provide information relative to state regulations and requirements
for disposal of hazardous waste. |
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[Applicable State agency, with
address, telephone, web, contact, title.] |
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| 1.5 |
Product Handling |
| A. |
Deliver cleaning materials to the
site in manufacturer's original containers with labels intact
and the seals unbroken. Store materials in a locked, well
ventilated storage space. |
| B. |
The storage space shall be kept
neat and clean. Contaminated rags, containers, and refuse
shall be removed and legally disposed of each day. |
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| 1.6 |
Environmental Conditions |
| A. |
No cleaning shall be done when
the temperature is less than forty-five (45) degrees F,
or under any condition unsuitable for the perfect execution
of the work. |
| B. |
Occupancy: |
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1. The premises will be occupied
throughout cleaning operations.
2. Arrange with building custodian, with due advance notice,
means for access to premises and necessary utilities and
spaces for storage of equipment.
3. Provide, at all times, a covered access to building(s)
for the public, employees and service vehicles.
4. Said activities shall not restrict the means of ingress
or egress to the building(s).
5. Work shall conform to rules and regulations having jurisdiction. |
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| 1.7 |
Protection |
| A. |
Provide complete protection for
all workers against injurious effects of cleaning agents. |
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1. Protection shall include but
not be limited to use of goggles, rubber gloves, and plastic
or rubber rainsuits to avoid splash to the skin or eyes.
In addition, the Contractor shall be required to provide
respirators as necessary.
2. Provide employed workers with material safety data sheets
(MSDS) on all cleaning agents and procedures used on site.
3. The Contractor shall also be responsible for schooling
his/her workmen in first aid procedures in case of an accident
with a hazardous chemical.
4. The Contractor shall retain on site throughout cleaning
operations a thorough selection of dilutants and antidotes
for treatment of chemical accidents. |
| B. |
Throughout the cleaning operations,
all adjacent materials shall be thoroughly protected form
any damage whatsoever. The Contractor shall be totally responsible
for repairing any damage caused by said operations. |
| C. |
Employ agricultural lime in conjunction
with soaker hoses and copious amounts of light water spray
on vegetation prior to application of any acidic cleaning
compound. Thoroughly rinse area after cleaning operations. |
| D. |
Employ soaker hoses and copious
amounts of light water spray on vegetation as part of protection
procedures prior to and throughout chemical cleaning operations. |
| E. |
Safely contain all chemicals, rinse
water, and residue resulting from cleaning procedures. Employ
6 mil. poly, pumps, plastic-lined canals/sumps to contain
resulting affluent. |
| F. |
The Contractor is responsible for
making sure the building is secure and water-tight prior
to the application of chemicals/water. Take all measures
to prevent water entry into the building. Employ 6 mil.
plastic, duct tape, string caulking and other material as
required to obtain water-tight integrity. |
| G. |
As required, apply approved plastic
spray-on peel-off type liquid materials, plastic tarpaulins,
or other type of coverings, to completely cover areas of
the building that could be adversely affected. Test all
protective materials against damaging affects to said building
components. Use tape or appropriate sealants to close edges
of covering throughout masonry cleaning operations. |
| H. |
The proper application and installation
of protective material is extremely important. If the masking
material has pin holes, gaps or any other perforations whatsoever
which may allow the cleaning/rinsing agents to get behind
the surface, excessive damage may result to exposed areas. |
| I. |
Public safety: Provide barriers
and signage for the purpose of limiting public access to
areas of work in progress and arrange such measures in clearly
understandable ways to prevent public exposure to over-spray
or contact with chemical products or contaminated rinse
water. |
| J. |
Protect and/or divert pedestrian
and automobile traffic. |
| K. |
The Contractor shall be held strictly
responsible for all damages caused by him to any building,
vegetation, fixtures, etc., as a result ofnegligence or
operations. |
| L. |
Throughout operations, protect
the marble coping from damaging effects of chemical cleaners
or residue, resulting from cleaning operations of other
masonry. |
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| 1.8 |
Scheduling |
| A. |
Clean exterior masonry prior to
repointing and masonry unit replacement. |
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