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threshold limit values
TLV's, the exposure limit workers are allowed to be exposed to a
substance within a 8-hour period during a 40- hour work week as set
forth by ACGIH and as policed by OSHA.
time and material
T&M, as referring to a method of charging by the hour for labor and
actual materials used plus an overhead and profit in lieu of a
guaranteed lump sum price for services rendered.
tongue and groove
T&G, a wood plank having a groove on one end and projecting tongue
on the other end.
top plate
The horizontal member along the top of stud wall or partition, load
bearing and exterior walls require a 2-stud top plate, while
interior non-load bearing walls or partitions generally only require
a 1-stud top plate.
total loss
Not economically feasible to repair, when cost to repair exceeds 80%
of its value.
toxic
Poison, substances that can cause physical harm to living organisms.
toxic gas detector
A mechanical device used to measure the presence of gases and VOC's.
tread
The horizontal part of stairs.
treated lumber
Wolmanized wood and lumber, can contain a percentage of chromium
III, arsenic V, and copper, used in exterior construction to weather
the elements of time.
trim
Molding; baseboard, door and window casing, etc., generally
constructed from wood, plastics or metals.
truss
A pre-engineered structural member capable of supporting its dead
load and live loads.
