Structural Steel Design (6th Edition)
6th Edition
ISBN: 9780134589657
Author: Jack C. McCormac, Stephen F. Csernak
Publisher: PEARSON
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Question
Chapter 12, Problem 12.7PFS
To determine
LRFD design tensile strength and ASD allowable tensile strength for the members and bearing type connections
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2-PL10x1/2
A-36
Bolts are 7/8 in A-325,
threads are not excluded.
All edge spacings are minimum
| 3" | 3" |
о
PL 10x3/4
A-572Gr50
a) Determine the nominal bolt capacity.
b) Determine the nominal bearing capacity for each plate.
c) Determine the nominal rupture capacity of each plate.
d) What is the nominal capacity of the connection?
e) Using LRFD, is this connection capable of supporting a dead load of 150 kip and a live
load of 100 kip?
The bolted connection shown is a bearing type connection. Which of the following best gives the shearing
capacity, ØRn. of the bolts? Consider threads excluded from shear plane and deformation at bolt hole is a
design consideration. Standard size holes.
PL350x12mm
= 250 MPa
C250x22.8
70
114
M20 A490
70
40' 60' 60 '40
SECT.
A
d
tw
bf
tf
Mm
15.8
mm^2
mm
mm
mm
mm
C250x22.8
2880
254
6.1
65
11.1
Ix(10^6)
Sx(10^3)
ly(10^6)
Sy(10^3)
Zx(10^3)
Zy(10^3)
rx
ry
mm^4
mm^3
mm
mm^4
mm^3
mm
mm^3
mm^3
27.7
218
98.1
0.912
18.5
18.5
257
40.3
O 424.8 KN
O 1,102.7 KN
O 3,770.7 KN
O 1,637.1 KN
For the splice connection shown in the figure,
Compute the design strength based on shear and bearing. (Use LRFD)
The plates are PL 12" x 7" steel ASTM A36 (Fy = 36 ksi, Fu = 58 ksi) and the bolts are 7/8-in.
diameter A325 (Fnu = 68 ksi) in standard holes.
P₁4
in
3 in 3 in
3 in 3 in 3 in
-in bolts
3 in
6 in
+
Pu
P 12 in
Chapter 12 Solutions
Structural Steel Design (6th Edition)
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Similar questions
- Determine the maximum safe load T that the splice connection can resist using LRFD. The bolts are 16mm diameter with oversized holes. The two plates at the left are both PL300X10 and the plate at the right is PL300X16. Use A-50 steel. 40 40 60 90 90 60arrow_forwardThe truss member shown in the accompanying illustration consists of two C12 x 25s(A36 steel) connected to a 25 mm gusset plate. How many 22 mm A325 bolts (threads excludedfrom shear plane) are required to develop the full design tensile capacity of the member if it isused as a bearing-type connection? Assume U = 0.85. Use ASD method.arrow_forward5) Calculate P the allowable tensile load for the butt joint shown. Each A325-N high-strength bolt has a diameter of 0.9 inches. The plates are made of ASTM A36 steel. If the applied load is 200 kips, is this connection adequate? If not, what needs to be changed so that this connection can handle an applied load of 200 kips? P- ФФ P ! 12"x " P. P.arrow_forward
- 1. In the butt joint shown below, the 7/8-inch diameter boits are made of A325 steel with threads excluded from the shear piane and the plates are made of A36 steel. o of a Determine the bolt shear strength b) Determine the bearing strength of the plate ) Determine the tensile strength (both gross and net) of the plate d) What is the strength of the bolted connection?arrow_forwardDetermine the required bolt diameter for the connection shown. The steel is A36 and the bolts are in standard holes. Check bearing and tearout strength requirement of the bolts. Use a) A490N, b) A490SC with Class A faying surface. Adopt the User Note on AISC Specifications J3.6 to determine the total effective strength of the bolt group. Use LRFD.arrow_forwardAngle Bolted Connection. The L6 x 31/2 × 5/16. -in angles, shown in Figure, The bolts are 3/4 inch in diameter. If A36 steel is used. All components are grade 36 steel. Find design tension strength? 1.5" 1.5" 24" 2"arrow_forward
- For the connection shown in the figure. A 1/2 in thick tension plate is connected to two 3/8 in gusset plates. All bolts are 7/8 in diameter, bearing type connection, A490 with threads excluded from the shear plane. Fy-50ksi and Fu-65ksi. Standard holes are used. 1- Determine the strength of the connection taking into account shear strength of the bolts only. 2- Determine the strength of the connection taking into account the tensile strength of the tension plate at gross and net area only. U-1.0. 1.5" 3.0" 1.5" Gusset Plate -1.5-2.5-2.5-1.5 0 0 0 00 O Tension Plate 6.0"arrow_forwardThe truss member shown in the accompanying illustration consists of two C12 x 25s (A36 steel) connected to a 1-in gusset plate. How many 7/8 in A490 bolts (threads excluded from shear plane) are required to develop the full design tensile capacity of the member if it is used as a bearing-type connection? Assume U = 0.85. Use both LRFD and ASD methods(threads not excluded).arrow_forwardCLO3: Determine the tensile capacity of the 1/2-in. by 7-in, plate shown in Figure bellow. The connection is made with 6/8-in.-diameter bolts, the plate is ASTM A529, grade 50 (Fy" 50ksi, Fu= 65ksi). Neglect block shear. 7" Tu 1/2" x 7" plate Oa. 127.97 kips Ob. 180.31 kips Oc 157.50 kips Od. 126.88 kipsarrow_forward
- In the connection shown in Figure 5, ASTM A572 Grade 50 steel is used for tension member (C10x20), A36 steel is used for the gusset plate (t = ½ in.). The holes are for 1-inch bolts. What is the maximum factored block shear strength in LRFD for this connection? Note: You must check both, the tension member and the gusset plate, for block shear. 1¹/2" + O O Figure 5 C10x20 X t=½ in.arrow_forwardFor the splice connection shown in the figure, a. Check all spacing and edge-distance requirements. (For 1-in diameter bolts minimum edge distance is 1.25 in. AISC Table J3.4) b. Compute the design strength based on shear and bearing. (Use LRFD) The plates are PL 1/2" x 7" steel ASTM A36 (Fy = 36 ksi, Fu = 58 ksi) and the bolts are 1-in diameter A325X (Fnv = 60 ksi) in standard holes.arrow_forwardA double lap splice connection shown in figure B is made up of 6mm x 150mm and 9mm x 150mm. Use NSCP specifications and assume a double row of bolts with standardsize holes for a bearing type connection with threads excluded from the shear planes.Minimum tensile strength Fu = 552.93MPa. Assume diameter hole is 3mm bigger than thediameter of bolts. Allowable shear stress is Fv = 207MPa. Allowable bearing stress fb = 1.2Fu.Diameter of bolts is 19mm. Fy = 449.25MPa.(a) Compute the tensile capacity of the steel plates. (Max. Net Area = 0.85 of Gross Area)(b) Compute the number of 19mm diameter bolts to develop the full strength of the plates. Note: SHOW DRAWINGS AND SOLUTIONS.arrow_forward
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