Final Exam
I.
ARCH 4311 & 6311
Spring Semester – Final Exam
Page 1 of 13 Name ___________________________
Indicate whether the statement is TRUE (T) or FALSE (F) ----- 20 Points
NOTE: DO NOT GUESS. A wrong answer will cancel a correct answer
1.
Buildings located at a large distance from earthquakes are safe
2.
Ductility Provides safety against collapse
3.
Horizontal diaphragms are distribute the seismic loads to the main resisting elements
4.
inadequate distance between buildings can, but does not always result in pounding damage
5.
Corner columns are less vulnerable because they are the farthest from the center of mass
6.
Buildings triangular in plan are very stable under seismic loads.
7.
It is recommended to use the same type of seismic resisting system in both directions.
8.
Mechanical equipment in lower floor s are generally more susceptible to damage than equipment on roofs
9.
Design codes are written to limit damage and not prevent it.
10.
Stiffness and .strength of elements not considered part of lateral-load resisting system do not effect the response of the building.
ARCH 4311 & 6311
Spring Semester – Final Exam
Page 2 of 13 Name ___________________________
11.
Braced steel columns and steel moment resistant frames together make a very good seismic resisting system
12.
Ductile seismic resisting system performs very well under seismic loads
13.
In medical facilities, a shear wall system is preferred .
14.
Ductile buildings have higher periods and therefore the loads s in them due to seismic loads are smaller
15.
The shear strength in an I-beam is carried mainly by the web while moment is carried mainly by the flanges.
ARCH 4311 & 6311
Spring Semester – Final Exam
Page 3 of 13 Name ___________________________
II.
Answer the following questions --------------------------- ( 25 Points)
1.
If a high first story is desired, some solution would be
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2.
If a large opaque wall is required in a location that could produce a soft
- story, the some solution would be
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3.
List three issues that , in your opinion, are a major concern in designing multi story open space libraries. Explain
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4.
A short column will fail in __________________ before _____________
5.
Equipment in basements are less damaged than equipment on roofs because of _______________.
6.
Because shear walls are ______________ while moment resistant frames are ____________, it is not recommended they be use together as a seismic resisting system.
ARCH 4311 & 6311
Spring Semester – Final Exam
Page 4 of 13 Name ___________________________
7.
Beams fail in _____________or ____________________ or __________
8.
The excessive ___________ in moment resisting Frames, under earthquakes, might cause damage to _______________
9.
Even today, many buildings are still not designed for seismic loads. Some of the reasons might be
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10.
During the year, you have come to know how to find the size of beams and columns of simple configurations as well as design of simple houses. List three benefits for you as an architect.
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11.
Give three secondary effects of earthquakes that could cause damage.
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12.
List three factors that will make a building perform better under seismic loads
ARCH 4311 & 6311
Spring Semester – Final Exam
Page 5 of 13 Name ___________________________
III.
The figure below shows three multi-story buildings:
Building (A): A braced system with bracing forming a cross in the building
Building (B): A U-Shaped building with a moment resisting frame
Building (C): A regular building with a moment resisting frame.
Columns have various shapes as per architectural requirements
----- (12 Points)
Required:
What seismic deficiency does each building have, if any. Explain your answer clearly and provide an alternative to the design if necessary .
OPEN
B
A
C
ARCH 4311 & 6311
Spring Semester – Final Exam
Page 6 of 13 Name ___________________________
ARCH 4311 & 6311
Spring Semester – Final Exam
Page 7 of 13 Name ___________________________
IV.
In the following figure, The original architectural designs called for a
20’-0” high first story and tow 15’-0” high upper stories. Due to building configuration, and to reduce and pipe work in the building, a suggestion was made to add another slab 5’-0” from the bottom under which all the piping can be located as shown. This suggestion made all the columns above the new slab have the same height. Would you agree with this suggestion. Explain your answer clearly . Explain your answer clearly
------ (10 Points)
5'-0" used to pass all the piping of the budiling
ARCH 4311 & 6311
Spring Semester – Final Exam
Page 8 of 13 Name ___________________________
V.
The following figure is of a typical town home. The south elevation ( not shown) is a solid shear wall. The east and west elevations are shear walls with an opening while the north elevation is the garage. For this figure, the minimum length for a timer shear wall is 3’-0”. In addition, the minimum garage opening is not to be less than 19’-0”. A review of the town home indicated that it is vulnerable to seismic loads and requires strengthening. The walls must remain.
Required:
1.
What do you thing is wrong with the seismic resisting system?
2. In your opinion as an architect, and based on the figure alone, what information, or suggestions, can you provide the structure engineer that will help him design a better resisting system? Two alternative are required with a neat sketch. --------------- (10 points)
GARAGE
YARD FENCE
3'-0"
4-6"
22'-0'
SOUTH ELEVATION
EAST AND WEST ELEVATIONS
ARCH 4311 & 6311
Spring Semester – Final Exam
Page 9 of 13 Name ___________________________
ARCH 4311 & 6311
Spring Semester – Final Exam
Page 10 of 13 Name ___________________________
VI.
The following figure shows a typical elevation of the outer frame of a building. The façade is to be a kind of glass wall (such as KalWal). Due to changes in landscaping resulting in a sloping finished grade, a small wall was built as shown to hold back the soil. . This of course will cause a variation in column heights. The first floor columns were all 45’-0” high.
In addition, they were all the same size. The heights of column on the first floor are now:
Required: Based on what was given to you in class:
1.
In the original design, what percentage of the seismic load did each column in the first story carry?
2.
What force will each column have to carry now if the seismic load is distributed according to stiffness
3.
What changes , in your opinion, can be made to solve this issue without effecting the façade to a great extent.
Note: X-bracing is not allowed. --------------------------------------- (15 Points )
5#30'-0" = 150'-0"
TYPICAL ELEVATION
TYPICAL FACADE
ARCH 4311 & 6311
Spring Semester – Final Exam
Page 11 of 13 Name ___________________________
ARCH 4311 & 6311
Spring Semester – Final Exam
Page 12 of 13 Name ___________________________
VII.
The following figure is of a floor plan in the building. The building has shear walls on all sides. There are four possible locations for the opening.
We know that the floor acts as a beam to transmit the loads to the seismic resisting system. Based on what we have studied in class regarding beams and seismic loads, arrange the opening according to the severity of their locations to the seismic efficiency of the building. Explain your answer clearly with respect to :
1.
Ability of slab to carry the loads
2.
Efficiency of the shear walls
Note: For opening 2,3,4 assume there is another opening on the opposite edge making them symmetrical with respect to the plan.
………. (8 Points) opening 4 opening 1 opening 2 opening 3
ARCH 4311 & 6311
Spring Semester – Final Exam
Page 13 of 13 Name ___________________________
