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: