EXAC - SECTION 3 -
FINAL PROJECT EXAM
QUESTIONS WITH
100% VERIFIED
SOLUTIONS!!
EXAC
OCTOBER 18, 2024
EVATEE
,EXAC - SECTION 3 - FINAL PROJECT EXAM
QUESTIONS WITH 100% VERIFIED
SOLUTIONS!!
What is: Design wind pressure? Answer - Design wind pressure:
Minimum design value for the equivalent static pressure on the exterior
surfaces resulting from critical wind velocity (equal to a reference wind wind
pressure measured at 33', 10m). The # is modified by a bunch of coefficients to
account for: exposure conditions, building height, wind gusts,
geometry/orientation.
Why are horizontal forces more critical than vertical ones in seismic design?
Answer - Because structures usually have considerable reserve for dealing with
additional vertical loads.
Define Base Shear. Answer - Base shear:
Minimum design value for the total lateral seismic force (assumed to act in any
horizontal direction)
Define the following: Collinear Forces, Concurrent Forces, Nonconcurrent
Forces. Answer - Collinear Forces:
Occur along straight line. Vector sum= sum of magnitude of forces acting along
same line of action.
Concurrent Forces:
Lines of action intersecting at common point. Vector sum=equivalent to, and
produces same effect on rigid body as the application of the vectors of the
several forces.
,Nonconcurrent Forces:
Lines of action that do not intersect at common point. Vector sum=single force
that would cause the same translation and rotation of a body as the set of
original forces.
What is a moment (structural forces)? Answer - Moment:
The tendency of a force to produce rotation of a body about a point or line
What is a Couple (structural forces)? Answer - Couple:
Force system of 2 equal parallel forces acting in opposite directions tending to
produce rotation but not translation
What are beams designed to do? Answer - Designed to carry and transfer
transverse loads across to supporting elements.
Define Deflection Answer - Deflection:
perp distance a spanning member deviates from true course under transverse
loading
What is the difference between a simple beam and a Fixed-End Beam? Answer
- Simple Beam:
Rests on supports at both ends - no moment resistance (ends free to rotate)
Fixed-end beam:
Both ends fixed against translation and rotation (reduced max deflection,
transferred bending stresses, increased rigidity)
, Distinguish between the following three frame types:
-Fixed Frame
-Hinged Frame
-Three Hinged Frame Answer - Fixed Frame
rigid frame connected to its supports with fixed joints (more resistant to
deflection than hinged from but also more sensitive to settlements and
thermal expansion/contraction)
Hinged Frame -
Rigid frame connected to its joints with pinned connections (pinned
connections prevent high bending stresses by allowing rotation)
Three-hinged Frame - structural assembly of 2 rigid sections connected to each
other and to its supports with pin joints (more sensitive to deflection than fixed
or hinged, 3-hinged system is least affected by support settlements and
thermal stresses - can also be analyzed as a statically determinate structure
Name 1 kind of beam for each wood, steel, and concrete, that can span >60'
(18m). Answer - Wood:
Laminated Beams (Timber)
Trusses (Timber)
Steel:
OWSJ
Concrete:
Precast Tees
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller EvaTee. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $23.99. You're not tied to anything after your purchase.