prior to placement of concrete protection slab.
3.4
FIELD QUALITY CONTROL
3.4.1
Moisture Test
Prior to application of fluid-applied waterproofing, measure moisture
content of substrate with a moisture meter in the presence of the
Contracting Officer. An acceptable device is the Delmhorst Moisture Meter,
Model BD7/2E/CS, Type 21 E. Similar meters by other manufacturers, which
are suitable for the purpose, may be used as approved by the Contracting
Officer. Do not begin application until meter reading indicates "dry"
range.
3.4.2
Film Thickness
Measure wet film thickness every 10 square meters 100 square feetduring
application by placing flat metal plates on the substrate or using a
mil-thickness gage especially manufactured for the purpose.
3.4.3
Flood Test
After application and curing is complete, plug drains and fill waterproofed
area with water to a depth of 50 mm 2 inches. A minimum 48 hour cure time,
or longer cure time if recommended by the membrane manufacturer, shall be
required prior to flood testing. Allow water to stand 24 hours. Test
watertightness by measuring water level at beginning and end of the 24 hour
period. If water level falls, drain water, allow installation to dry, and
inspect. Make repairs or replace as required and repeat the test. Work
shall not proceed before approval of repairs or replacement.
3.5
INFORMATION CARD
Furnish a typewritten card containing information listed in the attached
Form l, framed in a watertight frame under clear glass or plastic for each
waterproofing installation. Furnish framed card and duplicate card.
SECTION 07141
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