Metal Nonferrious

Question 1

Nonferrous Metals

Answer 1

metals w/o iron

Question 2

Nonferrous Metals used most commonly in construction:

Answer 2

aluminium, copper, copper alloys (bronze, brass)

Question 3

Aluminum advantage:

Answer 3

excellent strength to weight ratio

Question 4

Aluminum disadvantage:

Answer 4

high energy req’d for refining/manufacturing

Question 5

primary source of aluminium

Answer 5

bauxite

Question 6

aluminum soft and weak,

improved in alloy w :

Answer 6

manganese, zinc, magnesium, copper.

Question 7

Copper + Copper Alloys advantage:

Answer 7

corrosion resistance,
workability,
high elec conductivity.

Question 8

copper alloy: +tin

Answer 8

bronze

Question 9

copper alloy: +zinc

Answer 9

brass

Question 10

copper described by these associations:

Answer 10

Copper Development Association (CDA)

Unified Numbering System (UNS)

Question 11

on copper, clear organic coatings can prevent:

Answer 11

patina

Question 12

Monel:

Answer 12

trade name, roofing. copper+nickel.

Question 13

Zinc advantage:

Answer 13

resistant to corrosion

Question 14

Zinc often used for:

Answer 14

sheet roofing/flashing.

commonly for coating = galvanized steel.

Question 15

Lead advantage:

Answer 15

resistant to corrosion

Question 16

Lead occasionally cover complex roof shapes bc

Answer 16

easy to form.

Question 17

terneplate:

Answer 17

alloy 75% lead/25% tin,

to plate steel for roofing.

Question 18

lead density = ideal for

Answer 18

acoustic insulation/
vibration control/
radiation shielding.

Question 19

Structural Metals include

Answer 19

steel + aluminum

Question 20

H-shaped, for beams/columns.

Answer 20

wide-flange members:

Question 21

designated W,
followed by nominal depth (in.),
and weight (lb/ft).
ex. W18x85 (18” deep, 85 lb/ft),
actual depth less than nominal depth.

Answer 21

wide-flange sections:

Question 22

narrow flange,
inside faces of flange have slope of 1:6.
unlike W, actual depth is nominal depth.
designated S
ex. S18x85.
beams only.

Answer 22

American Standards I-beams:

Question 23

American Standards I-beams inside face of flange have slope of

Answer 23

1:6

Question 24

flange on one side only.
designated C.
typ. use:
frame openings,
form stair stringers,
anywhere where flush side is req’d.
not used alone for beams/columns. (buckle)

Answer 24

American Standard channel:

Question 25

made by cutting W/S in half.
designated WT/ST.
used for cords of steel trusses.

Answer 25

structural tees:

Question 26

in equal/unequal lengths.
designated L,
followed by length of angles,
AND thickness of legs.
used in pairs as members for trusses,
or singly as lintels,
misc bracing of other structural members.

Answer 26

steel angles:

Question 27

light columns,

members large trusses/space framing.

Answer 27

square/rec tube,

and round pipe members:

Question 28

available many wall thicknesses

Answer 28

structural tubing:

Question 29

standard weight, extra strong, double-extra strong. measured in nominal dims, actual a little larger.
square/rec tubing measured in actual.

Answer 29

structural pipe:

Question 30

any rectangular section,
≤8” width and ≥0.203in thickness,
or sections 6-8” width and ≥0.230in thickness.

Answer 30

bar:

Question 31

any section over 8” width, w thickness ≥0.230in,

or sections ≥48” width, and ≥0.180in thickness.

Answer 31

plate: