Deck 1: Earth Pressure Theory, Welding, and Slab Design

Question 1

Originally, Rankine's theory of lateral earth pressure can be applied to only______________    

A)cohesion less soil
B)cohesive soil
C)fine grained soil
D)coarse grained soil

Answer 1

cohesion less soil

Question 2

Rankine's theory of lateral pressure was extended to other soil by______________          

A)resal and bell
B)mohr
C)none of the mentioned
D)all of the mentioned

Answer 2

resal and bell

Question 3

Based on the assumptions of Rankine's theory, the soil mass is______________          

A)stratified
B)submerged
C)homogeneous
D)all of the mentioned

Answer 3

homogeneous

Question 4

Which of the following cases for cohesion less backfill in Rankine's theory is considered?

A)submerged backfill
B)moist backfill with no surcharge
C)backfill with sloping surface
D)all of the mentioned

Question 5

The factor that is responsible for inclination of resultant pressure to the retaining wall is______________          

A)frictional force
B)surcharge
C)earth pressure
D)weight of the wall

Question 6

If the sand filled behind the retaining wall with saturated water with water, then the possible lateral pressure is______________          

A)lateral pressure due to submerged weight and lateral pressure due to water
B)lateral pressure due to retaining wall
C)none of the mentioned
D)all of the mentioned

Question 7

The earth pressure at rest exerted on a retaining structure can be calculated using

A)theory of plasticity
B)theory of elasticity
C)mohr's theory of rupture
D)none of the mentioned

Question 8

The expression for K0 as given by Jacky is

A)k0 = 1 - sin ?
B)k0 = sin ?
C)k0 = 1 - cos ?
D)k0 = 1 + sin ?

Question 9

What will be the coefficient of earth pressure at rest for a rigid retaining wall, If the backfill consists of cohesion less soil having ? = 26°?

A)0.1295
B)0.6552
C)0.5616
D)0.7383

Question 10

A force 2P is acting on the double transverse fillet weld. Leg of weld is h and length l. Determine the shear stress in a plane inclined at ? with horizontal.

A)psin?(sin?+cos?)/hl
B)p(sin?+cos?)/hl
C)pcos?(sin?+cos?)/hl
D)none of the listed

Question 11

Maximum shear stress in transverse fillet weld of leg h and length l is

A)p/hl
B)1.21p/hl
C)p/1.21hl
D)none of the listed

Question 12

Hollow saddle key is superior to flat saddle key as far as power transmitting capability is concerned.

Question 13

Saddle key is more suitable than sunk key for heavy duty applications.

Question 14

The main advantage of sunk key is that it is a______________drive.

A)positive
B)negative
C)neutral
D)none of the listed

Question 15

Woodruff key permits______________movement b/w shaft and the hub.

A)axial
B)radial
C)eccentric
D)none of the listed

Question 16

Determine the length of kennedy key required to transmit 1200N-m and allowable shear in the key is 40N/mm². The diameter of shaft and width of key can be taken as 40mm and 10mm respectively.

A)49mm
B)36mm
C)46mm
D)53mm

Question 17

Splines are keys.

Question 18

The prestressed concrete slab systems are ideally suited for______________          

A)roofs
B)slabs
C)beam
D)column

Question 19

The precast prestressed hollow core slabs, with or without topping is an important

A)floor panels
B)tendons
C)wall coatings
D)reinforcements

Question 20

One way slabs may be supported across the entire width of the slab by means of

A)columns
B)piers
C)ridges
D)footings

Question 21

The simple or continuous slabs are analyzed for______________          

A)design foundation
B)design reinforcement
C)design moments
D)design slab

Question 22

The design of a two-way-slab supported on all four sides involves the computation of

A)moments
B)cross sections
C)bending moment
D)deformations

Question 23

A simple prestressed flat slab is generally supported by a network of______________          

A)beams
B)columns
C)spans
D)deflections

Question 24

The proportioning of tendons in design of prestressed concrete simple flat slab between the column and middle strips may be based on______________          

A)moments
B)codes
C)deflections
D)loads

Question 25

The design principles of continuous flat slab floors are similar to______________          

A)one way slab
B)two way slab
C)continuous
D)deformed