A simply supported beam deflects by 5 mm when it is subjected to a concentrated load of 10 kN at
its centre. What will be deflection in a 1/10 model of the beam if the model is subjected to a 1 kN
load at its centre? (A) 5 mm (B) 0.5 mm (C) 0.05 mm
its centre. What will be deflection in a 1/10 model of the beam if the model is subjected to a 1 kN
load at its centre? (A) 5 mm (B) 0.5 mm (C) 0.05 mm
Anonymous Quiz
23%
A
49%
B
28%
C
โค8๐3
The deformation of a spring produced by a unit load is called
(A) Stiffness
(B) Flexibility (C) Influence coefficient (D) Unit strain
(A) Stiffness
(B) Flexibility (C) Influence coefficient (D) Unit strain
Anonymous Quiz
33%
A
24%
B
13%
C
31%
D
๐9โค2๐1
When a uniformly distributed load, shorter than span of the girder, moves from left to right,
then the conditions for maximum bending moment at a section is that
(A) The head of the load reaches the section (B) The tail of the load reaches the section
then the conditions for maximum bending moment at a section is that
(A) The head of the load reaches the section (B) The tail of the load reaches the section
Anonymous Quiz
27%
A
31%
B
27%
The load position should be such that the section divides it equally on both sides
15%
Load position should be such that the section divides the load in same ratio as it divides the span
๐ฅ6
A number of forces acting at a point will be in equilibrium if
(A) Their total sum is zero
(B) Two resolved parts in two directions at right angles are equal (C) Sum of resolved parts in any two perpendicular directions are both zero
(A) Their total sum is zero
(B) Two resolved parts in two directions at right angles are equal (C) Sum of resolved parts in any two perpendicular directions are both zero
Anonymous Quiz
60%
A
22%
B
18%
C
๐11
The center of gravity of a triangle lies at the point of
(A) Concurrence of the medians
(B) Intersection of its altitudes (C) Intersection of bisector of angles (D) Intersection of diagonals
(A) Concurrence of the medians
(B) Intersection of its altitudes (C) Intersection of bisector of angles (D) Intersection of diagonals
Anonymous Quiz
27%
A
26%
B
28%
C
20%
D
๐12๐1
The maximum horizontal spacing between parallel reinforcement bars provided against shrinkage and temperature in slab should not exceed for minimum of _____ or 300 mm
(d : effective width of slab)
(d : effective width of slab)
Anonymous Quiz
39%
2d
29%
3d
22%
4d
11%
5d
โค7๐4
3. Moment of inertia of a triangular section with base "b" and height "h" about centre of gravity will be
Anonymous Quiz
12%
A. bh^3/3
56%
B. bh^3/12
26%
C. bh^3/36
7%
D. bh^3/48
๐9โค1๐1๐ญ1
Actual cost of the work is calculated
Anonymous Quiz
15%
At any stage of the work
18%
During the estimation
56%
At the time of completion of the work
10%
By just knowing the work to be done
๐7๐4๐1
The examples of different rocks classified on the basis of geological formation as igneous, Sedimentary and Metamorphic rocks are given as options. Identify the INCORRECT combination
Anonymous Quiz
22%
Igneous: Syenite
17%
Metamorphic: Gneiss
42%
Sedimentary: Marble
20%
Sedimentary: Lime stone
โค8๐6
The unit of payment for the earthwork for embankment is
Anonymous Quiz
4%
Per meter
83%
Per cubic meter
2%
Per number
11%
Per square meter
๐11โค4
The most accurate cost for a building project is arrived at through
Anonymous Quiz
12%
Cube rate estimate
73%
Detailed estimate
8%
Plinth area method
7%
Preliminary estimate
๐13โค1
A soil has an average particle size of 0.2 mm, it is predominantly:
Anonymous Quiz
33%
Gravel
30%
Sand
24%
Silt
14%
Clay
๐8๐2๐2โค1
The direction of steepest slope on a contour is
Anonymous Quiz
22%
Along the contour
35%
At an angle of 45ยฐ to the contour
32%
At right angles to the contour
11%
At an angle of 60ยฐ to the contour
๐11โค4
In limit state design approach, spacing of main reinforcement controls primarily
Anonymous Quiz
19%
A. collapse
25%
B. cracking
46%
C. deflection
10%
D. durability
๐8๐5โค1
๐The Hong Kong-Zhuhai-Macau Bridge โ the world's longest sea-crossing bridge โ was inaugurated on *October 23, 2018*, spanning *55 kilometers.
๐น Connection:
It links Hong Kong*, *Zhuhai*, and *Macau* as part of China's *Greater Bay Area* development.
๐น *Hybrid Design*:
A combination of *bridges*, *artificial islands*, and a *6.7-kilometer underwater tunnel* to allow ship passage.
๐น *Purpose*:
To *reduce travel time* between Hong Kong and Zhuhai from 4 hours to *45 minutes*, and to strengthen regional integration.
๐น *Construction*:
Took *nine years*, used *420,000 tons of steel* (enough to build *60 Eiffel Towers*), and was engineered to *withstand earthquakes and typhoons*.
๐น *Cost*:
Estimated at *$20 billion*.
Despite initial criticisms regarding its cost and benefits, the bridge stands as a *symbol of Chinaโs engineering achievement* and commitment to *regional development*.
@etconp
๐น Connection:
It links Hong Kong*, *Zhuhai*, and *Macau* as part of China's *Greater Bay Area* development.
๐น *Hybrid Design*:
A combination of *bridges*, *artificial islands*, and a *6.7-kilometer underwater tunnel* to allow ship passage.
๐น *Purpose*:
To *reduce travel time* between Hong Kong and Zhuhai from 4 hours to *45 minutes*, and to strengthen regional integration.
๐น *Construction*:
Took *nine years*, used *420,000 tons of steel* (enough to build *60 Eiffel Towers*), and was engineered to *withstand earthquakes and typhoons*.
๐น *Cost*:
Estimated at *$20 billion*.
Despite initial criticisms regarding its cost and benefits, the bridge stands as a *symbol of Chinaโs engineering achievement* and commitment to *regional development*.
@etconp
๐11โค4
๐CONSEQUENCES OF REDUCING VOLUME OF THE COLUMNS THROUGH INSERTING DRAINING PIPES
๐งReducing the section of a column by inserting draining pipes is a great problem that leads to Collapse of Many structures. Here are some potential consequences:
CONSEQUENCES
1. REDUCED LOAD BEARING CAPACITY: By reducing the cross-sectional area of the column, its load-bearing capacity is compromised, potentially leading to structural failure.
2. INCREASE STRESS CONCENTRATION: The insertion of draining pipes can create stress concentrations around the pipe openings, increasing the risk of cracking and failure.
3. WEAKENED COLUMN STABILITY: Reducing the column's section can impair its stability, making it more susceptible to buckling or collapse under load.
4. COMPROMISED REINFORCEMENT: If the column is reinforced, the insertion of draining pipes can compromise the reinforcement's effectiveness, potentially leading to structural failure.
5. INCREASE RISK OF CORROSION: The presence of draining pipes can increase the risk of corrosion within the column, particularly if the pipes are not properly sealed or maintained.
6. STRUCTURAL INSTABILITY: In extreme cases, reducing the section of a column can lead to structural instability, potentially causing the entire structure to collapse.
MIGITATIONS
1. CONSULT STRUCTURAL ENGINEER: Before inserting draining pipes, consult a structural engineer to assess the potential impact on the column's structural integrity.
2. USE ALTERNATIVE DRAINAGE SOLUTIONS: Consider alternative drainage solutions that do not compromise the column's section, such as external drainage systems.
3. REINFORCE THE COLUMN: If draining pipes must be inserted, consider reinforcing the column to compensate for the reduced section.
REMEMBER..
if it comes Necessary to use such draining pipes. it's advisable to Increase the Size of the Column so that the Volume occupied by pipes will be Compensated.
@etconp
๐งReducing the section of a column by inserting draining pipes is a great problem that leads to Collapse of Many structures. Here are some potential consequences:
CONSEQUENCES
1. REDUCED LOAD BEARING CAPACITY: By reducing the cross-sectional area of the column, its load-bearing capacity is compromised, potentially leading to structural failure.
2. INCREASE STRESS CONCENTRATION: The insertion of draining pipes can create stress concentrations around the pipe openings, increasing the risk of cracking and failure.
3. WEAKENED COLUMN STABILITY: Reducing the column's section can impair its stability, making it more susceptible to buckling or collapse under load.
4. COMPROMISED REINFORCEMENT: If the column is reinforced, the insertion of draining pipes can compromise the reinforcement's effectiveness, potentially leading to structural failure.
5. INCREASE RISK OF CORROSION: The presence of draining pipes can increase the risk of corrosion within the column, particularly if the pipes are not properly sealed or maintained.
6. STRUCTURAL INSTABILITY: In extreme cases, reducing the section of a column can lead to structural instability, potentially causing the entire structure to collapse.
MIGITATIONS
1. CONSULT STRUCTURAL ENGINEER: Before inserting draining pipes, consult a structural engineer to assess the potential impact on the column's structural integrity.
2. USE ALTERNATIVE DRAINAGE SOLUTIONS: Consider alternative drainage solutions that do not compromise the column's section, such as external drainage systems.
3. REINFORCE THE COLUMN: If draining pipes must be inserted, consider reinforcing the column to compensate for the reduced section.
REMEMBER..
if it comes Necessary to use such draining pipes. it's advisable to Increase the Size of the Column so that the Volume occupied by pipes will be Compensated.
@etconp
๐13
Ethio Construction Engineering
Photo
๐โExploring Hidden beamsโ
A hidden beam, also known as a concealed beam, is a structural element within a buildingโs construction that carries loads while remaining unseen, integrated into the slab of the structure.
It has the same depth as the slab it supports, allowing for an unobstructed and aesthetically pleasing appearance in architectural designs.
The main purposes of a hidden beam are to distribute loads effectively, break down large slab panels, maximize floor height, and provide space for electromechanical ductwork, all while maintaining the integrity of the structure and enhancing its visual appeal.
๐งAdvantages of hidden beams include:
They remain concealed, contributing to a seamless appearance.
They allow for greater architectural flexibility and open interior spaces.
They efficiently disperse loads on the supporting slab.
They facilitate maximum floor height without compromising structural integrity.
Disadvantages may include lower ductility due to the high reinforcement ratio needed to compensate for depth restrictions, especially at column connections. Hidden beams are commonly used in various types of slabs like waffle, ribbed, or solid slabs to meet both structural and aesthetic requirements.
Via Yonatan Tadesse(PMP)
@etconp
A hidden beam, also known as a concealed beam, is a structural element within a buildingโs construction that carries loads while remaining unseen, integrated into the slab of the structure.
It has the same depth as the slab it supports, allowing for an unobstructed and aesthetically pleasing appearance in architectural designs.
The main purposes of a hidden beam are to distribute loads effectively, break down large slab panels, maximize floor height, and provide space for electromechanical ductwork, all while maintaining the integrity of the structure and enhancing its visual appeal.
๐งAdvantages of hidden beams include:
They remain concealed, contributing to a seamless appearance.
They allow for greater architectural flexibility and open interior spaces.
They efficiently disperse loads on the supporting slab.
They facilitate maximum floor height without compromising structural integrity.
Disadvantages may include lower ductility due to the high reinforcement ratio needed to compensate for depth restrictions, especially at column connections. Hidden beams are commonly used in various types of slabs like waffle, ribbed, or solid slabs to meet both structural and aesthetic requirements.
Via Yonatan Tadesse(PMP)
@etconp
๐16โค4
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แซแข
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โง แญแฐแแแแ แซแแญแฉแ
0904040477
0994941708
๐แแแตแ แแฆแแต แ แแแแต แ แญแแต แจแฐแแแ แ แแ
โง แแแ แ แ แแต แฆแณ แแแแ แ แญแฅ
โง แแตแญแซแฝแ แตแซแฝแ
๐แขแตแฎแตแซ แแตแฅ แจแตแ แฅแแแญแแณแแ
โง แญแฐแแแแ แซแแญแฉแ
0904040477
0994941708
๐2