Description : The minimum distance between the centres of bulb of diameter du, of a multi under reamed piles, is (A) du (B) 1.25 du (C) 1.5 du (D) 1.75 du
Last Answer : Answer: Option C
Description : Consider the following statements: 1. Friction piles are also called floating piles 2. Minimum number of piles to qualify as a pile group is three. 3. The group efficiency of a pile group may be either less than 100% or more than 100%. ... ) 1, 2 & 3 (b) 1 & 2 only (c) 2 & 3 only (d) 1 & 3 only
Last Answer : (a) 1, 2 & 3
Description : In case of Raymond pile (A) Lengths vary from 6 m to 12 m (B) Diameter of top of piles varies from 40 cm to 60 cm (C) Diameter of pile at bottom varies from 20 cm to 28 cm (D) All the above
Last Answer : Answer: Option D
Description : Negative skin friction on piles (A) Is caused due to relative settlement of the soil (B) Is caused in soft clays (C) Decreases the pile capacity (D) All of the above
Description : For end bearing piles, the minimum spacing of piles of diameter ‘d’ shall be a) 3d b) 2d c) 2.5d* d) 5d
Last Answer : c) 2.5d*
Description : The internal dimensions of a ware house are 15 m × 5.6 m, and the maximum height of piles is 2.70 m, the maximum number of bags to be stored in two piles, are (A) 1500 bags (B) 2000 bags (C) 2500 bags (D) 3000 bags
Description : If the effective plan area of a warehouse is 54 sq. m, and maximum height of piles permitted is 270 cm, the number of cement bags to be stored, is (A) 2000 bags (B) 2200 bags (C) 2400 bags (D) 2700 bags
Description : Pick up the incorrect statement from the following: (A) Space between the exterior walls of a warehouse and bag piles should be 30 cm (B) Cement bags should preferably be piled on wooden planks (C) Width and height of the pile should not exceed 3 m and 2.70 m respectively (D) None of these
Description : A retaining wall 6m high supports a backfill with a surcharge angle of 10°. The back of the wall is inclined to the vertical at a positive batter angle of 5°. If the angle of wall friction is 7°, then the resultant ... inclined to the horizontal at an angle of (A) 7° (B) 10° (C) 12° (D) 17
Last Answer : (C) 12°
Description : In a braking test, a vehicle travelling at 36 km ph was stopped at a braking distance of 8.0 m. The average value of the vehicle's skid resistance (friction coefficient) is (A) 0.64 (B) 6.25 (C) 0.16 (D) None of these
Description : The staff reading at a distance of 80 m from a level with the bubble at its centre is 1.31 m. When the bubble is moved by 5 divisions out of the centre, the reading is 1.39 m. The angular value of the one division of the bubble, is (A) 28.8 sec (B) 41.25 sec (C) 14.52 sec (D) 25.05
Last Answer : (B) 41.25 sec
Description : The difference in the reservoir level and the lowest point of the water mains is 180 m. The expected pressure due to water hammer is 7.5 kg/cm2 in a pressure conduit of diameter 1 m. Assuming the efficiency of the ... , is (A) 10 mm (B) 15 mm (C) 20 mm (D) 25 mm
Last Answer : (C) 20 mm
Description : If depth of slab is 10 cm, width of web 30 cm, depth of web 50 cm, centre to centre distance of beams 3 m, effective span of beams 6 m, the effective flange width of the beam, is (A) 200 cm (B) 300 cm (C) 150 cm (D) 100 cm
Description : What is the distance away from midspan of a plastic hinge if developing in a simply supported beam of rectangular cross-section and span 6 m, subjected to a point load at the centre? (a) Zero (b) 1 m (c) 2 m (d) 3 m
Last Answer : (a) Zero
Description : The expected discharge to be obtained from an open well sunk in coarse sand is 0.0059 cumec. If the working depression head of the well is 3 m, the minimum diameter of the well, is (A) 2 m (B) 2.25 m (C) 2.50 m (D) 3.00 m
Last Answer : (D) 3.00 m
Description : The minimum cover in a slab should neither be less than the diameter of bar nor less than (A) 10 mm (B) 15 mm (C) 25 mm (D) 13 mm
Last Answer : Answer: Option B
Description : If 8 bolts are emplaced in a clamp coupling with shaft diameter 80mm d, calculate the diameter of each bolt if coefficient of friction is 0.3 and torque transmitted is 4000N-m. Permissible tensile stress is 80N/mm2. a) 27mm b) 25mm c) 23mm d) 21mm
Last Answer : a) 27mm
Description : If 8 bolts are emplaced in a clamp coupling with shaft diameter 80mm d, calculate the tensile force on each bolt if coefficient of friction is 0.3 and torque transmitted is 4000N-m. a) 51234.4N b) 45968.3N c) 41666.7N d) None of the listed
Last Answer : c) 41666.7N
Description : Two pipe systems can be said to be equivalent, when the following quantities are same (A) Friction loss and flow (B) Length and diameter (C) Flow and length (D) Friction factor and diameter
Last Answer : Answer: Option A
Description : According to Darcy's formula, the loss of head due to friction in the pipe is (where f = Darcy's coefficient, l = Length of pipe, v = Velocity of liquid in pipe, and d = Diameter of pipe) (A) flv²/2gd (B) flv²/gd (C) 3flv²/2gd (D) 4flv²/2gd
Description : The loss of head due to friction in a pipe of uniform diameter in which a viscous flow is taking place, is (where RN = Reynold number) (A) 1/RN (B) 4/RN (C) 16/RN (D) 64/RN
Description : AD is a diameter of a circle and AB is a chord. If AD = 34 cm, AB = 30 cm, then find the distance of AB from the centre of the circle. -Maths 9th
Last Answer : ∵ The perpendicular drawn from the centre to the chord bisects it. ∴ AM = 1/2 AB = 1/2 × 30 cm = 15 cm Also, OA = 1/2 AD = 1/2 × 34 cm = 17 cm In rt. △OAM, we have OA2 = OM2 + AM2 172 = OM2 + 152 ⇒ 289 = OM2 + 225 ⇒ OM2 = 289 - 225 ⇒ OM2 = 64 ⇒ OM = √64 = 8 cm
Description : AD is a diameter of a circle and AB is a chord. If AD = 34 cm, AB = 30 cm, the distance of AB from the centre of the circle is -Maths 9th
Last Answer : (d) Given, AD = 34 cm and AB = 30 cm In figure, draw OL ⊥ AB. Since, the perpendicular from the centre of a circle to a chord bisects the chord.
Description : Draw a circle of diameter 6.4 cm. Then draw two tangents to the circle from a point P at a distance 6.4 cm from the centre of the circle. -Maths 9th
Last Answer : clear .
Description : A car is travelling at 90 km/hour on a rough road where the coefficient of friction between the road and the tyre is 0.5. The distance the car will skid before stopping when the brakes are jammed suddenly would be a.127.4 m b.95.55 m c.63.7 m d.31.85 m e.90 m
Last Answer : c. 63.7 m
Description : According to I.S.: 456, 1978 the thickness of reinforced concrete footing on piles at its edges, is kept less than (A) 5 cm (B) 10 cm (C) 15 cm (D) 20 cm
Description : Minimum distance of gate post from centre line of nearest track on BG is a) 2 meters b) 3 meters* c) 4 meters d) 5 meters
Last Answer : b) 3 meters*
Description : The absolute minimum sight distance required for stopping a vehicle moving with a speed of 80 kmph, is (A) 120 m (B) 200 m (C) 640 m (D) None of these
Description : Minimum stopping distance for moving vehicles on road with a design speed of 80 km/hour, is (A) 80 m (B) 100 m (C) 120 m (D) 150 m
Description : When a number of hair pin bends are introduced, a minimum intervening distance in between is kept (A) 20 m (B) 40 m (C) 60 m (D) 100 m
Description : Angle of friction is the (A) Angle between normal reaction and the resultant of normal reaction and the limiting friction (B) Ratio of limiting friction and normal reaction (C) The ratio of minimum ... (D) The ratio of minimum friction force to friction force acting when the body is in motion
Last Answer : (A) Angle between normal reaction and the resultant of normal reaction and the limiting friction
Description : Should raking piles of a bridge abutment be placed under an embankment?
Last Answer : For a bridge abutment to be supported on raking piles with different orientations, the movement between the ground and the pile group is difficult to predict. For instance, if some of the raking ... experience severe bending moment and damage the piles as recommended by Dr. Edmund C Hambly (1979).
Description : Under-reamed piles are generally (A) Driven piles (B) Bored piles (C) Precast piles (D) All the above
Last Answer : (B) Bored piles
Description : Number of piles required to support a column, is (A) 1 (B) 2 (C) 3 (D) 4
Last Answer : (C) 3
Description : Piles are usually driven by (A) Diesel operated hammer (B) Drop hammer (C) Single acting steam hammer (D) All the above
Description : On piles, the drop must be at least (A) 80 cm (B) 100 cm (C) 120 cm (D) 140 cm
Description : According to I.S.: 456, 1978 the thickness of reinforced concrete footing on piles at its edges, is kept less than (A) 20 cm (B) 30 cm (C) 40 cm (D) 75 cm
Description : In places where the soil is soft and has small resistance to the flow of concrete, which one of the following types of piles, is used (A) Vibro pile (B) Pressure pile (C) Franki pile (D) Pedestal pile
Description : Best type of piles for soft soil having little resistance to the flow of concrete, is (A) Simplex pile (B) Vibro pile (C) Raymond pile (D) Franki pile
Description : Bearing capacity of soils cannot be improved by (A) Draining sub-soil water (B) Ramming crushed stone in soil (C) Driving sand piles (D) Watering surface of soil
Description : Which one of the following piles has a cast iron shoe even after removal of the hollow cylindrical steel casing? (A) Simplex pile (B) Pedestal pile (C) Vibro pile (D) Both (a) and (c) of the above
Description : The additional piles which are driven to increase the capacity of supporting loads on vertical piles, are known (A) Construction piles (B) Raking piles (C) Eccentric piles (D) Sinking piles
Description : The bearing capacity of piles is determined by (A) Dynamic formula (B) Static formula (C) Pile load tests (D) All the above
Description : Under reamed piles are generally used for (A) Machine foundations (B) Factory building (C) Tall structures (D) All the above
Description : Pick up the correct statement from the following: (A) The bearing capacity of a pile is defined as the load which can be sustained by the pile without producing excessive settlement (B) The safe bearing capacity ... of safety (C) The factor of safety for piles is taken as 6 (D) All the above
Description : Pick up the correct statement from the following: (A) The sand in the sand pile is well compacted (B) The sand is kept moist at the time of placing and tamping (C) Sand piles are generally used under column loads (D) All of the above
Description : Suitable spacing of timber piles, is (A) 50 cm (B) 60 cm (C) 80 cm (D) 90 cm
Description : The astronomical unit (AU) is the (a) mean distance from the centre of the sun to the centre of the earth (b) mean distance between the surface of the sun to the surface of the earth (c) maximum distance between the sun and the earth (d) minimum distance between the sun and the earth
Last Answer : Ans:(a)