steel test 1
TRANSCRIPT
-
8/16/2019 Steel Test 1
1/11
Name: __________________
Concepts of Steel Design
Fall
2012
CES 4605
TEST 1 – TENSION MEMBERS
-
8/16/2019 Steel Test 1
2/11
(1)
Wha
(
((
(
(
S
t
is
the
forc
) 20 kips in
)
20,000
lb) 15 kips in
) 15,000 lb
) None of t
20ft
HOW ALL
in
membe
Tension
in
CompreCompressio
in Tension
e above.
20k
A
OUR WO
AB.
sion
n
0ft
RK & Ref
20f
rence Co e Pages
20ft
10
10
20
t
t
t
-
8/16/2019 Steel Test 1
3/11
Problem
P
A
B
(2) What
(
(
(
(
(
(3) What
(
(
(
(
(
s 2 through
late thickne
572
Gr.50
S
olt Size = 1/
is the gross
) 72 in2
)
3.0
in2
) 4.5 in2
) 6.0 in2
) None of t
is the gross
)
97.2
kips
) 202.5 kip
)
145.8
kip
) 135.0 kip
) None of t
1.5"
6
ss = 0.75”
teel
2”
area of the
e above
area capaci
e above
1.5"
plate in ten
ty of the pl
1.5" 1.5"
sion?
te in tensio
12.0"
1.5"
n?
2.0"
2.0"
2.0"
6.0"
-
8/16/2019 Steel Test 1
4/11
(4) What net effective area of the plate controls design for tension?
(a) 3.83 in2
(b) 4.03 in2
(c) 3.77 in2
(d) 4.50 in2
(e) None of the above
(5) What is the net effective area capacity of the plate in tension?
(a) 155 kips
(b) 212 kips
(c) 168 kips
(d) 184 kips
(e) None of the above
(6) What controls the design of the plate in tension?
(a) Gross Area Capacity
(b) Net Effective Area Capacity
(c) Block
Shear
Capacity
(d) Slenderness Ratio
(e) None of the above.
-
8/16/2019 Steel Test 1
5/11
Problems 7 through 15
W12x40
A572 Gr.55 Steel
1/2” Bolts
(7) What is the gross area of the W‐section?
(a) 10.5 in2
(b) 12.4 in2
(c) 11.7 in2
(d) 40.0 in2
(e) None of the above.
(8) What is the gross area capacity in tension for the W‐section?
(a) 526.7 kips
(b) 579.2 kips
(c) 643.5 kips
(d) 614.3 kips
(e) None of the above.
(9) What is the LRFD resistance factor, t, for tensile rupture in the net section?
(a) 1.0
(b) 0.9
(c) 0.75
(d) 0.6
(e) None of the above.
2”
2”
1”
1”
-
8/16/2019 Steel Test 1
6/11
(10) What is the shear lag factor for the W‐section?
(a) 1.0
(b) 0.9
(c) 0.85
(d) 0.75
(e) None of the above.
(11) What is the net effective area for the W‐section?
(a) 9.37 in2
(b) 10.41 in2
(c) 8.85 in2
(d) 11.7 in2
(e) None of the above.
(12) What is the net effective area capacity in tension for the W‐section?
(a) 546.5 kips
(b) 456.8 kips
(c) 507.5 kips
(d) 491.9 kips
(e) None
of
the
above.
-
8/16/2019 Steel Test 1
7/11
(13) What is the total gross area in shear, Agv, for the W‐section?
(a) 10.3 in2
(b) 2.58 in2
(c)
5.16
in
2
(d) 11.7 in2
(e) None of the above.
(14) What is the total net area in shear, Anv, for the W‐section?
(a) 8.01 in2
(b) 9.50 in2
(c) 10.3 in2
(d) 11.7 in2
(e) None of the above.
(15) What is the total net area in shear, Ant, for the W‐section?
(a) 2.06
in2
(b) 0.52 in2
(c) 0.84 in2
(d) 0.35 in2
(e) None of the above.
-
8/16/2019 Steel Test 1
8/11
Problem 16 through 18
1.5”
2”
2”
2”
W14x90
A572 Gr.50
7/8” Bolts
-
8/16/2019 Steel Test 1
9/11
(16) What is the total gross area in shear, Agv, for the W‐section?
(a) 0.88 in2
(b) 0.66 in2
(c)
1.32
in
2
(d) 0.44 in2
(e) None of the above.
(17) What is the total net area in shear, Anv, for the W‐section?
(a) 0.88 in2
(b) 0.66 in2
(c) 1.32 in2
(d) 0.44 in2
(e) None of the above.
(18) What is the total net area in shear, Ant, for the W‐section?
(a) 0.88
in2
(b) 0.66 in2
(c) 1.32 in2
(d) 0.44 in2
(e) None of the above.
-
8/16/2019 Steel Test 1
10/11
Problems 19 through 25
DL = 900 kips
LL = 100 kips
Length of Member = 25 ft
A572 Gr. 60
7/8” Bolts
(19) What is the LRFD design load for this member?
(a) 1000 kips
(b) 1240 kips
(c) 1260 kips
(d) 1280 kips
(e) None of the above.
(20) What is the minimum design gross area for the W‐section in tension?
(a) 40.2 in2
(b) 23.3 in2
(c) 15.1 in2
(d) 6.4 in2
(e) None of the above.
(21) What is the lightest W14 section that will support the design load in gross area tension?
(a) W14x26
(b) W14x53
(c) W14x82
(d) W14x145
-
8/16/2019 Steel Test 1
11/11
(22) What is the shear lag factor for the section selected in Problem 21?
(a) 1.0
(b) 0.9
(c)
0.85
(d) 0.75
(e) None of the above.
(23) What is the net effective area for the W14 section selected in Problem 21?
(a) 40.2 in2
(b) 23.3 in2
(c) 15.1 in2
(d) 6.4 in2
(e) None of the above.
(24) What is the net effective area capacity for the W14 section selected in Problem 21?
(a) 1000 kips
(b) 1240 kips
(c) 1260 kips
(d) 1280 kips
(e) None of the above.
(25) Does the section selected in Problem 21 work for the design loads in tension?
(a) Yes
(b) No
(c) I didn’t make it this far, because the test was too long.
(d) I have no idea what you are asking.
(e) None of the above.