packaging with brand name and product identification clearly marked.
Do
not permit uncertified materials in the work area.
1.5
ENVIRONMENTAL CONDITIONS
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NOTE: When waterproofing will be installed indoors
protected from the weather, delete the bracketed
requirements for outdoor environmental conditions.
Also, in geographical areas where the specifier
determines it is routine to utilize artificial means
of maintaining the surface and ambient temperatures
above 4 degrees C 40 degrees F, include the
conditions for waiver in the project specifications.
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Do not apply waterproofing during inclement weather or when
there is ice,
frost, surface moisture, or visible dampness on the surface
to receive
waterproofing and when ambient and surface temperatures are
4 degrees C 40
degrees F or below. [The restriction on the application of
waterproofing
materials when ambient and surface temperatures are below 4
degrees C 40
degrees F will be waived if the Contractor devises a means,
approved by the
Contracting Officer, of maintaining the surface and ambient
temperatures
above 4 degrees C 40 degrees F.]
PART 2
PRODUCTS
2.1
MATERIALS
Provide one of the types of elastomeric waterproofing sheet materialand
related primers, adhesives, and mastics as specified herein. Ensure
compatibility of waterproofing materials within a specific type, with each
other, and with the materials on which they will be applied. Materials
shall conform to the applicable performance requirements cited below when
tested in accordance with the referenced ASTM publications.
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NOTE: Where concrete vault magazines are designed
below ground, specify membrane sheeting. Do not
apply primer or mastic until concrete has curred not
less than 7 days, or as required by the
manufacturer, remove all moisture, form oil and non-
fungi curing agents.
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NOTE: Specify a higher puncture resistance if the
waterproofing will be subject to abuse. Commercial
membranes are available which will exceed 890 N (200
pounds) in puncture resistance.
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2.2
BUTYL RUBBER SHEETING
Not less than 1.5 mm 60 mils minimum thickness.
2.2.1
Butyl Rubber Sheeting Performance Requirements
a.
Thickness Tolerance, ASTM D 412:
Plus or minus 10 percent;
SECTION 07131
Page 7
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