Homework 1: For the axially loaded imperfect rigid bar shown in the figure below:
Spring Stiffness (k)
Determine: Equilibrium paths Stability criteria Critical loading Stability of solutions Stability at the critical loading
Chapter 1: Basic Concepts of S
Homework # 2 :
I) For the axially loaded rigid bar shown in the figure
below:
Equilibrium Paths
Imperfect
Perfect
Stable
Unstable
ImperfectionSensitivity Plot
P
m
Pcr(
0)
Pcr(
0)
0
0
= /4
a) For the cases of a perfect and an imperfect system,
determine:
E
Dr. A.M. Niazy, P.E.
1.3 A Structure that is Unstable at The Critical Load
Undeformed Deformed Figure 1.7
Chapter 1: Basic Concepts of Stability
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Figure 1.8
Chapter 1: Basic Concepts of Stability 19/34
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Chapte
Chapter 2 Solutions
Page 1 of 19
Problem 2.1
a) See Appendix A and Appendix B for weights of roofing, sheathing, framing, insulation, and
gypsum wallboard.
Asphalt shingles
3/8 in. plywood sheathing
(3/8 in.) (3.0 psf/in)
2x6 @ 16 in. o.c.
Fiberglass loos
Chapter 5 Solutions
Page 1 of 6
c. t in. for tightly curved members
5.1
a. t = 1.5 in. b. t = 1.375 in.
5.2
a. b = 3
5.3
a. The combination symbol is made up of two parts. The first part is the
reference bending design value in hundreds of psi followed by
Chapter 13 Solutions
Page 1 of 45
Problem 13.10 LRFD
Double shear bolted connection using a single row of five in. diameter A307 bolts
Main member: Hem-Fir No.1, 4x10, G = 0.43, lm = tm = 3.5 in., = 0, Fem = 4800 psi
Side members: Hem-Fir No.1, 2x10, G =
Chapter 11 Solutions
Page 1 of 6
Problem 11.1
a) Dowel-type fastener: A fastener with a cylindrically-shaped shank. Examples include bolts,
lag bolts (also called lag screws), wood screws, nails and spikes. Dowel-type fasteners are
commonly used to connec
Chapter 4 Solutions
Page 1 of 19
4.1
a. narrow, needle-like leaves; evergreens; conifers
b. broadleafed; deciduous
c. softwoods
4.2
See Fig. 4.4.
a. Annual Ring wood cells developed on the outside of the tree in one growing
season
b. Latewood (summerwood)
Chapter 12 Solutions
Page 1 of 33
Problem 12.5 ASD
Strength-level seismic lateral force (LRFD) to roof diaphragm: wEL = 98 lb/ft
Lateral seismic force to roof diaphragm for ASD: wL = 0.7wEL = 68.6 lb/ft
h1 = 9 ft; h2 = 2 ft, b = 21 ft, 45 between knee bra
Floor Vibrations
Due to Human Activity
Ref: Murray, Allen, and Ungar, AISC Design Guide 11: Floor Vibrations Due to
Human Activity, Chicago: American Institute of Steel Construction, 2003
1
Background
Modern steel floor systems may be susceptible to
vibra
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FundamentalsofPostTensioned
ConcreteDesignforBuildings
PartOne
by
JohnP.Miller,P.E.
FundamentalsofPostTensionedConcreteDesignforBuildingsPartOne
ASunCamonlinecontinuingeducationcourse
Overview of This Course
This is Part One of a two-part course that cov
Chapter 8 Solutions
Page 1 of 12
8.1
a) sheathing loads normal to the surface of the panel
b) diaphragm shear in the plane of the panel
8.2
1) veneer a thin sheet of wood
2) plies veneers of wood used in multiple layers to form plywood
3) layers each cros
Applying Appendix D of ACI 318
10 KIPS
In 2002, the American Concrete
Institutes Building Code Requirements
for Structural Concrete (ACI 318 2002)
for the first time published criteria for
Anchoring to Concrete in Appendix
D. The current version of Append
AISC_Prequalified_1
1/27/07
7:02 AM
Page i
ANSI/AISC 358-05
An American National Standard
Prequalified Connections
for Special and Intermediate
Steel Moment Frames for
Seismic Applications
December 13, 2005
Approved by the AISC Connection Prequalification
ANSI/AISC 358-05s1-09
An American National Standard
Supplement No. 1 to
ANSI/AISC 358-05
Prequalified Connections
for Special and Intermediate
Steel Moment Frames for
Seismic Applications
June 18, 2009
Approved by the
AISC Connection Prequalification Revi