ARE 5.0 PPD Flashcards
Unit Lock
Unit locksets are not regularly used. A rectangular notch is cut into the door and the single-piece unit lock is installed into the opening then tightened.
Cylindrical Lock
“Cylinder locksets are most common in residential applications, but they are also used in institutional and office spaces. A hole is bored into the face of the door and A second hole is bored through the door edge and into the first hole. the main lock Cylinder shaft is installed into the larger hole. After, the smaller latch Cylinder is installed into the edge hole.”
Rim lock
Rim locksets are used when modification of the door is not possible. The rim lock is face mounted to the door and a strike is face mounted to the door frame.
Mortise lock
Mortise locksets are generally used in institutional and commercial applications. The lock unit is installed in a mortise cut into the edge of the door. The handle and lock are then installed.
Fillet Weld
Triangle
Square Weld
Two lines
Vee Weld
V
Bevel Weld
Crooked V
U Weld
Y
J Weld
Backwards Y
Flare Bevel
Weird Cleavage
Weld all around
Circle
Field Weld
Flag
Flush Contour
Dash
Convex Contour
Frown
Mortar Types
N (normal) – most common, medium strength. meant for reinforced interior and above-grade exterior load-bearing walls.
S (strong) – med high strength. Good for below grade
M (mad max) – High strength. Below grade where very high forces are present.
O (only non bearing) – low strength. used in non-load-bearing interior applications
K (killed off) – historic (not used anymore). Lowest strength
Brick Types / Grades
FBA – architectural
FBS - wider range of size and color variations
FBX – narrower range of size and color
SW for severe weather
MW for moderate weather
NW no weather, brick that will not be exposed to weather.
Plywood grades
Two letters: front then back veneer. A to D, A is best D is worst
Concrete Aggregate Size
1) one-fifth of the narrowest dimension between sides of forms,
2) one-third the depth of slabs,
3) 3/4-ths of the minimum clear spacing between individual reinforcing bars, bundles of bars, or pre-tensioning strands.
Galvanic Metal Order
Platinum Gold Silver Titanium Stainless Steel Brass Tungsten Chromium Nickel Copper Cast Iron Steel Lead Tin Aluminum Cadmium Galvanized Steel Zinc Magnesium
Water pressure calcs (ignoring friction loss):
1 ft of height = 0.433 of pressure loss
Tons to BTU/hr and tons to SF
1 ton to 12000 btu/hr
1 ton to 500 sf for renovation
1 ton to 1000 sf for new
Transformers:
120/240 V Single Phase
120/208 V, Three Phase, 4 wire
277/480 V, Three Phase, 4 wire
2400/4160 V, Three Phase, 4 wire
Fire extinguisher types:
Class A: ordinary combustibles such as wood, paper, cloth, trash, and plastics.
Class B: flammable liquids such as gasoline, petroleum oil, paint, propane
Class C: energized electrical equipment such as motors, transformers, and appliances.
Class D: combustible metals such as potassium, sodium, aluminum, and magnesium.
Class K: cooking oils and greases such as animals fats and vegetable fats.