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H
H Clip:
Small metal clips formed like an "H" that fits
at the joints of two plywood (or wafer board) sheets to
stiffen the joint. Normally used on the roof sheeting.
Hardware:
Metal accessories such as door knobs, towel bars,
toilet paper holders, etc.
Hatch:
An opening in a deck, floor or roof. The usual
purpose is to provide access from inside the building.
Haunch:
An extension, knee-like protrusion of the foundation
wall that a concrete porch or patio will rest upon for support.
Hawk:
A flat wood or metal tool 10 inches to 14 inches square
with a handle used by plasterers to carry plaster mortar
or mud.
Hazard
Insurance: Insurance for a building while it is
under construction.
Header:
Framing members over windows, doors, or other
openings. A beam placed perpendicular to joists and to which
joists
are nailed in framing
for chimney, stairway, or other opening. Also, a wood lintel.
Hearth:
The inner or outer floor of a fireplace, usually
made of brick, tile, or stone.
Heartwood:
The wood extending from the pith to the sapwood,
the cells of which no longer participate in the life processes
of the
tree.
Heat Meter:
An electrical municipal inspection of the electric
meter breaker panel box.
Heat Pump:
A device which uses compression and decompression
of gas to heat and/or cool a house.
Heat Rough:
Work performed by the heating contractor after
the stairs and interior walls are built. This includes installing
all duct
work and flue pipes.
Sometimes the furnace and fireplaces are installed at this
stage of construction.
Heat Strengthened
Glass: Flat or bent glass that has been heat-treated
to a specific surface and/or edge compression range to
meet the requirements
of ASTM C 1048, kind HS. Heat-strengthened glass is approximately
two times as strong as annealed
glass of the same
thickness when exposed to uniform static pressure loads.
Heat-strengthened glass is not considered safety
glass and will
not completely dice in the manner fully tempered glass will.
Heat Trim:
Work done by the heating contractor to get the
home ready for the municipal final heat Inspection. This
includes venting
the hot water heater,
installing all vent grills, registers, air conditioning
services, turning on the furnace, installing thermostats,
venting ranges
and hoods, and all other heat related work.
Heating
Load: The amount of heating required to keep a
building at a specified temperature during the winter, usually
65°
Fahrenheit, regardless
of outside temperature.
Heel Bead:
Sealant applied at the base of a channel, after
setting the light or panel and before the removable stop
is installed,
one of its purposes
being to prevent leakage past the stop.
Heel Cut:
A notch cut in the end of a rafter to permit it
to fit flat on a wall and on the top, doubled, exterior
wall plate.
Hermetic
Seal: Vacuum seal between panes of a double-paned
window, i.e. insulated glass unit or IGU. Failure of a hermetic
seal causes permanent
fogging between the panels of the IGU.
High-Early
Cement: A portland cement sold as Type III which
sets up to its full strength faster than other types.
Highlights:
A light spot, area, or streak on a painted surface.
Hinge:
A jointed or flexible device that allows the turning
or pivoting of a part, such as a door or lid, on a stationary
frame.
Hip:
The external angle formed by the meeting of two sloping
sides of a roof.
Hip Rafter:
A rafter that forms the intersection of an external
roof angle.
Hip Roof:
A roof that rises by inclined planes from all
four sides of a building.
Hip Shingles:
Shingles used to cover the inclined external angle
formed by the intersection of two sloping roof planes.
Hoistway:
A shaftway for the travel of one or more elevators.
Home Run
(Electrical): The electrical cable that carries
power from the main circuit breaker panel to the first electrical
box, plug, or
switch in the circuit.
Honeycomb:
Areas in a foundation wall where the aggregate
(gravel) is visible. Honeycombs can be usually be remedied
by
applying a thin
layer of grout or other cement product over the affected
area. Also, a method by which concrete is poured and not
puddled or vibrated,
allowing the edges to have voids or holes after the forms
are removed.
Horizontal:
Parallel to or in the plane of the horizon.
Hose Bib:
An outdoor faucet with hose threads on the spout.
Also commonly used to supply washing machines and wash basins.
Hot Wire:
The wire that carries electrical energy to a receptacle
or other device—in contrast to a neutral, which carries
electricity
away again. Normally
the black wire. Also see Ground.
Hub:
In plumbing, the enlarged end of a pipe which is made to
provide a connection into which the end of the joining pipe
will fit.
Humidifier:
A device designed to increase the humidity within
a room or a house by means of the discharge of water vapor.
They
may consist of
individual room size units or larger units attached to the
heating plant to condition the entire house.
Hurricane
Clip: Metal straps that are nailed and secure
the roof rafters and trusses to the top horizontal wall
plate. Sometimes
called a Teco Clip.
Hurricane
Ties: Metal fasteners used to secure rafters in
structures subject to hurricane winds.
HVAC:
Heating Ventilation and Air Conditioning.
Hydro-Electric
Elevator: An elevator where liquid is pumped under
pressure directly into the cylinder by a pump driven by
an
electric motor
without an accumulator between the pump and cylinder.
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