Cleaning and Restoration Methods[; G][; G, [_____]]
Descriptive narrative in cleaning and repair methods to be
employed in the work. Description shall be organized in sequence
from preparation through completion of the work. Schedule showing
estimated time, in calendar days, for completion of each phase of
the work shall be included.
Qualifications
Documentation showing Contractor's experience of 5 consecutive
years in masonry restoration, plus a list of similar jobs to the
one specified herein.
SD-04 Samples
Materials
Sample Masonry Panels[; G][; G, [_____]]
Samples of the materials listed below; indicating sizes, shapes,
finishes, color, and pertinent accessories: [_____]. Masonry
Panels, as specified.
SD-07 Certificates
Materials
Certificates of compliance attesting that the materials,
equipment, and cleaning agents (chemicals, detergents, etc.) to be
used in the work meet the specified requirements.
1.3
GENERAL REQUIREMENTS
Work shall be done in conformance with ACI C-20. Non-historic masonry
work, including materials, procedures, and requirements shall conform to
Section 04200 MASONRY, except as otherwise specified herein.
1.3.1
Cleaning and Restoration Methods
The cleaning and restoration methods, and materials selected for a specific
structure, shall be submitted for approval before work starts, and shall
take into account the total construction system of the building to be
worked upon, including different masonry and mortar materials, as well as
non-masonry elements which may be affected by the work.
1.3.2
Ionic Cleaners
Ionic chemical cleaners shall be used as specified, in accordance with the
manufacturer's instructions, and only upon the direction of the Contracting
Officer. Ionic cleaners shall be used only after gentler cleaning methods
have been determined to be ineffective through the use of test panels.
1.4
QUALIFICATIONS
The Contractor shall provide qualified workers, trained and experienced in
restoration of masonry in historic structures, and shall furnish
documentation of 5 consecutive years of work of this type. A list of
similar jobs shall be provided identifying when, where, and for whom the
SECTION 04900
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