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Why does the NRCA recommend replacing composite roof
deck made of laminated insulation & OSB? - ANSWER-Their
tendency to hold moisture can lead to dimensional changes
and fastener back out.
When you are installing a wood deck made of
boards,planks,plywood,or OSB,
which of the following is the most accurate statement ? -
ANSWER-The
thickness of the wood material is based on the design loads
of the building.
Which statement most likely accurately describes wood plank
and wood panels
decks? - ANSWER-The proper thickness of wood material is
determined by the
design of the
loads.
,Which statement most accurately describes the best
roofing systems? -
ANSWER-A system that is matched to building
specifications and
characteristics.
How should the reinforcement component of a built-up roof
system installed? -
ANSWER-Embedded between layers of
waterproofing material.
While heating up the bitumen material in a kettle on the
jobsite, which of the
following should you do? - ANSWER-Circulate the
bitumen material on a
regular basis while the heating is
going on.
Which of these is the best way to apply built up roof piles in low
slope roof membranes? - ANSWER-As a complete roof
membrane in a single day.
Which of the following serves as a weather proofing componant
in single ply slope roof membranes? - ANSWER-Thermoset or
thermoplastic membranes.
What is the purpose of an expansion joint in low slope roofing
systems? - ANSWER-To minimize the effects the stresses and
movements in a roofing system.
, Which of these is the minimum recommendation for placement
of expansion joints in a roof assembly? - ANSWER-In the same
location as the buildings structural expansion joints.
Which of these is the most appropriate for installing eave edge
metal in asphalt
shingle roofs? - ANSWER-Extend over
the flange
Which of these would least likely result in interior damage if
a built in gutter
leaks? - ANSWER-A built in gutter at
the eave.
Which of these would least likely result from ponding or poor
roofing system drainage ? - ANSWER-Immediate changes in
slope and structural integrity of the deck.
How would crickets on the upslope side of a chimney be
supported? -
ANSWER-Wood
Framing .
Which would be most appropriate when installing downslope
side chimney flashing in an area with regular freeze throw
cycles and accumulations of ice and snow? - ANSWER-Apron
flashings over a water and ice dam protection membrane on the
down slope side.