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51 Cards in this Set
- Front
- Back
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Concrete is defined as a mixture of what 3 ingredients?
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1. cement
2. water 3. aggregates |
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Cement is a finely ground powder consisting of what ingredients?
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1. aluminum
2. silicate 3. iron 4. lime |
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What is the catlytic action that water has on transforming the chemicals in cement into a hard solid?
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hydration
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What is plastic concrete
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wet, still formable
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What is Green Concrete
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Hard, but not fully cured
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What is cured concrete
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Fully cured to maximum psi
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Fine aggregates are what size or less in diameter
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1/4"
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When mixing concrete, what does slump mean
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The amount of water used; the higher the slump, the more water used
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Each layer of concrete is rodded ___ times for a slump test
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25
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There are ___ basic types of Portland Cement
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5
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Contaminated aggregates can
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affect the cement paste bond
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The unit weight of concrete is approximately
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150 pounds per cubic food
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What is air-entraining and what does it produce to improve resistance of concrete to freezing?
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air entraining is adding air bubbles to concrete mix to improve workability; use less water, therefore greater strength; improve performance with freeze/thaw
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What quality of water should be used to mix concrete?
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potable
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Aggregates usually constitute about ___% to __% of the volume of concrete
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60 to 80%
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Water usually constitutes from __ to __% of the total volume of concrete
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14% to 20% of the total volume of concrete
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Identify the 5 window types (he'll have pictures - we identify)
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casement, awning, hopper, bay, jalousie
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What are the ingredients of paint?
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1. pigment
2. binder 3. liquids 4. Additives |
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Paints come in 2 basic types. What are they?
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1. interior
2. exterior |
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There are 2 types of plastics, what are they?
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1. thermoplastics
2. thermosets Thermoplastic resins can be repeatedly reheated so that any scrap can be reused, thermoset cannot. |
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The term quarter-sawed means what?
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the lumber is cut with the growth rings at an angle greater than 45 degrees.
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Light framing lumber is classified as ____ lumber
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dimension
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What's the most common nail used?
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common nail
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What is the formula for figuring the volume of concrete?
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(W x L x thickness)/ 27
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How many cu yards of concrete in a slab 62' long, 18' wide and 5.5" thickness?
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19 cu yards (18.93)
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How many cu. yards of concrete for a round slab with 22' diameter and 4" thick?
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(pi*r squared)
3.14 x 121 x .333 = 126.52 divided by 27 = 4.69 cu yards about 5 cu yards for round slab |
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common nail is generally how long?
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up to 6" long
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The strongest lumber is made from the ______.
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summerwood
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Mix of cement and water is called?
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paste
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What's a monolithic pour?
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The slab and footings are all in one pour
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Plastics consist of building blocks called _____, typically derived from petroleum or natural gas.
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hydrocarbons
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In engineered lumber what does OSB stand for?
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oriented strand board
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How many linear feet in a board 18 1/2' long
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18.5
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In concrete if the weight of a cubic yard of concrete is 4050 lbs what is the weight per unti of one cubic foot of concrete?
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150
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Deciduous trees are ___-bearing?
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leaf
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Coniferous trees are ___-bearing?
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cone
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The term S-dry on a lumber grade stamp means that the lumber contains
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no more than 19% moisture
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What are the ingredients of mortar?
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cement, sand, lime, water
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The nominal size of a 2" x 4" board is 2 inches x 4 inches, what is the dressed size?
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1-1/2 x 3-1/2
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be able to draw pp. 63 - header, king stud, trimmer stud when shown doorway and window opening
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carpentry level one-trainee module 27105 - 5.2
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6d in penny system is equal to how many inches
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2"
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10d in penny system is equal to how many inches
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3"
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Draw a picture of a toggle bolt
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figure 28 on 2.36 of carpentry level one-trainee module
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3" long common nails = ___ in penny system
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10d
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The head of a drywall screw
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has a Phillips head and bugle shape - in class they said sunken or curved shaped so you can put mud over it
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casein glue
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come in POWDER form and is mixed with water. It is water resistant and can be used on oily woods. The powder can deteriorate with age.
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Epoxies have a high resistance to what?
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chemical resistance (check this - people in class were saying heat)
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What's the vertical member of a window sash or panel door?
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stile
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What's the trim around a window or door called?
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casing
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how many feet in a square yard?
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9
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what's a spike expressed in penny terms?
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greater than 16d is a spike
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