250+ TOP MCQs on Arch Masonry Calculation and Answers

Civil Engineering Drawing Multiple Choice Questions on “Arch Masonry Calculation”.

1. Unit of payment in FPS of throating is ____________
a) per m
b) per r ft
c) per ft
d) per sq ft
Answer: b
Clarification: Throating can be defined as a small groove cut on the underside of projecting chaajjas, cornice copying to discharge the rain water without trickling down to the wall.

2. Unit of payment in MKS of painting, varnishing is ___________
a) per sq m
b) sq cm
c) cu m
d) m
Answer: a
Clarification: To ensure your finished oil or acrylic painting to stay looking its best then adding the right varnish in the right way will be a sound investment. Varnish protects the painting from dirt and dust and evens out the painting’s final appearance, making it all equally glossy or matt.
Over the years dirt and dust will stick to the varnish rather than the painting and when the time is right, the varnish itself can be removed and the painting re-varnished to look as good as new.

3. Unit of payment in MKS of beam is _____________
a) per cu m
b) cu m
c) per sq ft
d) per sq m
Answer: a
Clarification: A beam is a structural element that primarily resists loads applied laterally to the beam’s axis. Its mode of deflection is primarily by bending. The loads applied to the beam result in reaction forces at the beam’s support points. The total effect of all the forces acting on the beam is to produce shear forces and bending moments within the beam, that in turn induce internal stresses, strains and deflections of the beam. Beams are characterized by their manner of support, profile (shape of cross-section), length, and their material.

4. Unit of payment in MKS of RCC bars is _____________
a) per q
b) per kg
c) per tonne
d) per cu m
Answer: a
Clarification: A rebar, or reinforcing bar, is a common steel bar, and is commonly used in reinforced concrete and reinforced masonry structures. It is usually formed from carbon steel, and is given ridges for better mechanical anchoring into the concrete. It can also be described as reinforcement or reinforcing steel.

5. Unit of measurement in MKS of DPC is ____________
a) per sq m
b) sq m
c) sq cm
d) per cu m
Answer: b
Clarification: Damp proofing is defined by the American Society for Testing and Materials (ASTM) as a material that resists the passage of water with no hydro-static pressure and waterproof as a treatment that resists the passage of water under pressure. Generally, damp proofing keeps moisture out of a building where vapor barriers keep interior moisture from getting into walls. Moisture resistance is not necessarily absolute: it is usually defined by a specific test method, limits, and engineering tolerances.

6. Unit of payment in MKS of door and window sill is __________
a) per no
b) per m
c) per cu m
d) per sq m
Answer: d
Clarification: On a door frame, the sill is the portion of the door frame that runs along the bottom and sits directly on the foundation of your floor. It is the cross piece that actually completes the pre-installed door frame. The sill is actually underneath your threshold.

7. Unit of payment in FPS of supply of lime slaked is _________
a) per acre
b) per cwt
c) per gl
d) per maund
Answer: d
Clarification: Calcium hydroxide (traditionally called slaked lime) is an inorganic compound with the chemical formula Ca(OH)2. It is a colourless crystal or white powder and is obtained when calcium oxide (called lime or quicklime) is mixed, or slaked with water. It has many names including hydrated lime, caustic lime, builders’ lime, slack lime, cal, or pickling lime. Calcium hydroxide is used in many applications, including food preparation. Limewater is the common name for a saturated solution of calcium hydroxide.

8. What is the actual size of standard modular brick-tile?
a) 19cm*9cm*4cm
b) 19cm*9cm*9cm
c) 20cm*10cm*10cm
d) 19cm*9cm*7cm
Answer: b
Clarification: For India, a brick of standard size 190 mm x 90 mm x 90 mm is recommended by the BIS. With mortar thickness, the size of such a brick becomes 200 mm x 100 mm x 100 mm and it is known as the nominal size of the modular brick. Thus the nominal size of brick includes the mortar thickness.
It is found that the weight of 1 cum of brick earth is about 18 KN. Hence the average weight of a brick will be about 30 to 35 N.

9. Actual thickness of wall with 2.5 brick is __________
a) 30cm
b) 50cm
c) 49cm
d) 20cm
Answer: c
Clarification: A two-by-four wall stud is 312 inches wide, and an interior wall typically has 12-inch drywall installed on both sides, bringing the wall thickness to 412 inches. Walls that contain plumbing, such as walls behind sinks, however, should be thicker than standard walls. Two-by-six wall studs are 512 inches wide and they provide a larger stud space for running drainpipes, air ducts or other mechanical elements. With the addition of drywall on both sides, a two-by-six wall is 612 inches wide.

250+ TOP MCQs on Estimate of Earthwork by Three Methods and Answers

Civil Engineering Drawing test on “Estimate of Earthwork by Three Methods”.

1. Normally earthwork is estimated for 30 m lead for distance and 1.5 m lift for height or depth, and this distance of 30 m and the height of 1.5 m are known as _____________
a) vertical lead and lift
b) normal lead and lift
c) horizontal lead and lift
d) transverse lead and lift

Answer: b
Clarification: Normal rate for earthwork is for 30 m lead and 1.5 m lift. For greater lead or lift the rates will be different (higher) for every unit of 30 m lead and for every unit of 1.5 m lift. The earthwork is, therefore, estimated separately for every 30 m lead and for every 1.5 m lift.

2. Cross-section of earthwork of road in banking is in the form of trapezium. Name the method to calculate the quantity of earthwork.
a) Longitudinal formula
b) Quadrilateral formula
c) Prismoidal formula
d) Trapezium formula

Answer: c
Clarification: Quantity or volume = L/6 (A1+A2+4Am).

3. Workout the quantity of earthwork for an embankment 150 m long and 10 m wide at the top. Slide slop is 2:1 and depths at each 30 m intervals are 1.2, 1.4, 1.4, 1.6, 0.60, 1.6 m.
a) 3572.9 m3
b) 4563.7 m3
c) 2572.8 m3
d) 2590.0 m3

Answer: c

4. To calculate the volume of earthwork from contour plan for filling a depression or pond and for cutting a hillock __________________ may be used conveniently.
a) elevation method
b) section area method
c) prismoidal formula
d) contour method

Answer: c
Clarification: The area with every contour may be found by using a Planimeter or a tracing paper containing squares. Then the prismoidal formula may be applied to calculate the volume, the distance between the two sections will be the contour intervals, i.e., the difference of level between two consecutive contours.

5. Calculate the quantity of earthwork for 200 m length for a portion of road in an uniform ground the heights of banks at the two ends being 1.00 m and 1.60 m. The formation width is 10 mm and side slope 2:1. Assume that there is no traverse slope.
a) 3276 cu m
b) 5676 cu m
c) 6757 cu m
d) 1121 cu m

Answer: a
Clarification: Quantity = (Bd+sd2) *length
Where, B=10 m, S=2, L=200 m, d=mean depth = (1+1.60)/2 = 1.30 m
Quantity = (10*1.3+2*1.32)*200 = (13=3.38)*200 = 16.38*200 = 3276 cu m.

6. Designated point on a road where road marking or other means helps pedestrians cross safely is called?
a) Zebra crossing
b) Pedestrian crossing
c) Footpath
d) Subway

Answer: b
Clarification: A pedestrian crossing or crosswalk is a place designated for pedestrians to cross a road. Crosswalks are designed to keep pedestrians together where they can be seen by motorists, and where they can cross most safely across the flow of vehicular traffic.
Marked pedestrian crossings are often found at intersections, but may also be at other points on busy roads that would otherwise be too unsafe to cross without assistance due to vehicle numbers, speed or road widths. They are also commonly installed where large numbers of pedestrians are attempting to cross (such as in shopping areas) or where vulnerable road users (such as school children) regularly cross.

7. A raised edge at the side of the roadway is known as _____________
a) curb
b) curvature
c) inclination
d) circular

Answer: a
Clarification: A curb or kerb is the edge where a raised sidewalk (pavement in British English) or road median/central reservation meets a street or other roadway.

8. What is the longitudinal slope called?
a) Kerb
b) Horizon
c) Grade
d) Lift

Answer: c
Clarification: The grade (also called slope, incline, gradient, mainfall, pitch or rise) of a physical feature, landform or constructed line refers to the tangent of the angle of that surface to the horizontal. It is a special case of the slope, where zero indicates horizontality. A larger number indicates higher or steeper degree of “tilt”. Often slope is calculated as a ratio of “rise” to “run”, or as a fraction (“rise over run”) in which run is the horizontal distance and rise is the vertical distance.

9. A ________ is a thoroughfare, route, or way on land between two places that has been paved or otherwise improved to allow travel by foot or some form of conveyance, including a motor vehicle, cart, bicycle, or horse.
a) harbour
b) hole
c) lift
d) road

Answer: d
Clarification: Roads consist of one or two roadways (British English: carriageways), each with one or more lanes and any associated sidewalks (British English: pavement) and road verges. In the Netherlands there is often a Protected Bicycle Path provided for cycling.
Roads available for use by the public may be referred to as parkways, avenues, freeways, interstates, highways, or primary, secondary, and tertiary local roads.

10. The vertical alignment of a road, expressed as a series of grades, connected by parabolic curves is called ___________
a) curb
b) cant
c) profile
d) curve

Answer: c
Clarification: The profile of a road consists of road slopes, called grades, connected by parabolic vertical curves. Vertical curves are used to provide a gradual change from one road slope to another, so that vehicles may smoothly navigate grade changes as they travel.
Sag vertical curves are those that have a tangent slope at the end of the curve that is higher than that of the beginning of the curve. When driving on a road, a sag curve would appear as a valley, with the vehicle first going downhill before reaching the bottom of the curve and continuing uphill or level.

11. ____________________ is the road alignment specification which provides a substantially clear line of sight so that the driver of a vehicle.
a) Stopping sight distance
b) Safe sight distance
c) Corner sight distance (CSD)
d) Intersection sight distance

Answer: c
Clarification: Bicyclist or pedestrian waiting at the crossroad may safely anticipate the driver of an approaching vehicle. Corner sight provides an adequate time for the waiting user to either cross all lanes of through traffic, cross the near lanes and turn left, or turn right, without requiring through traffic to radically alter their speed.

12. Typical lane widths range from ______ metres to _____ metres.
a) 1, 2.4
b) 10, 12.6
c) 3, 3.6
d) 8, 8.6

Answer: c
Clarification: Wider lanes and shoulders are usually used on roads with higher speed and higher volume traffic, and significant numbers of trucks and other large vehicles. Narrower lanes may be used on roads with lower speed or lower volume traffic.
Narrow lanes cost less to build and maintain, but also reduce the capacity of a road to convey traffic. On rural roads, narrow lanes are likely to experience higher rates of run-off-road and head-on collisions. Wider roads increase the time needed to walk across and increase storm water runoff.

250+ TOP MCQs on Detailed Specifications of Road Work – 1 and Answers

Civil Engineering Drawing Multiple Choice Questions on “Detailed Specifications of Road Work-1”.

1. Thickness of a pavement may be reduced considerably by ________
a) Drainage of soil
b) Stabilisation of soil
c) Compaction of soil
d) Drainage of soil, Stabilisation of soil and Compaction of soil
Answer: d
Clarification: The major factors which governs the thickness of the pavement are ‘Traffic’ and ‘subgrade soil strength’ apart from climatic conditions ( frost action etc.), material characteristics etc.
However, there were no options related to the above discussed.
Option (Drainage of soil) affects the thickness because the subgrade soil strength (measured in CBR (%)) changes with the density of the soil.
Option (Stabilisation of soil) also affects the thickness because the stabilized soils do possess higher soil strength/desired properties than the unstabilized.
Option (Compaction of soil) deals with the drainage of the soils. Drainage affects the performance of the pavement. If the pavement results in a poor performance under drainage condition, an additional “drainage layer” should be provided (IRC 37:2012) and also while strengthening the roads, it is expected to get more characteristic deflection results in providing more thickness than the properly drained pavement.

2. The usual width of parapet walls along Highways in hilly region, is ____________
a) 60 cm
b) 20 cm
c) 70 cm
d) 40 cm
Answer: a
Clarification: A parapet is a barrier which is an extension of the wall at the edge of a roof, terrace, balcony, walkway or other structure. The word comes ultimately from the Italian parapetto. The German equivalent Brustwehr has the same meaning. Where extending above a roof, a parapet may simply be the portion of an exterior wall that continues above the line of the roof surface, or may be a continuation of a vertical feature beneath the roof such as a fire wall or party wall.

3. The road foundation for modern highways construction, was developed by ____________
a) Tresguet
b) Telford
c) Macadam
d) Telford and Macadam simultaneously.
Answer: d
Clarification: Thomas Telford, born in Dumfriesshire Scotland, was a surveyor and engineer who applied Tresaguet’s road building theories. In 1801 Telford worked for the British Commission of Highlands Roads and Bridges. He became director of the Holyhead Road Commission between 1815 and 1830. Telford extended Tresaguet’s theories, but emphasized high-quality stone. He recognized that some of the road problems of the French could be avoided by using cubical stone blocks.
John Loudon McAdam was born in Ayr, Scotland in 1756. In 1787 he became a trustee of the Ayrshire Turnpike in the Scottish Lowlands and during the next seven years this hobby became an obsession. He moved to Bristol, England in 1802 and became a Commissioner for Paving in 1806. On 15 January 1816 he was elected Surveyor-General of roads for the Turnpike Trust, and was now responsible for 149 miles of road. McAdam first put his ideas about road construction into major practice, the first ‘macadamised’ stretch of road being Marsh Road at Ashton Gate, Bristol.

4. In water bound macadam roads, binding material, is __________
a) stone dust
b) sand
c) brick dust
d) cement
Answer: a
Clarification: Stone dust is like a darker, coarser version of sand. It is a byproduct of running stones through a crushing machine to make crushed stone. Its exact composition will obviously depend on what kind of stone was run through the machine. For instance, sometimes granite is run through such a machine; in other cases, it could be limestone, for example. The machine has a screen that traps the larger material (that is, the crushed stone). The smaller material or “screenings” falls through the screen. Depending on the size of the holes in the screen used, it can be so fine in texture that it is basically a powder.

5. The distance travelled by revolving the wheel of a vehicle more than its circumferential movement, is known as __________
a) slip
b) skid
c) slip and skid
d) cement
Answer: b
Clarification: An automobile skid is an automobile handling condition where one or more tires are slipping relative to the road, and the overall handling of the vehicle has been affected.
In (automotive) vehicle dynamics, slip is the relative motion between a tire and the road surface it is moving on. This slip can be generated either by the tire’s rotational speed being greater or less than the free-rolling speed (usually described as percent slip), or by the tire’s plane of rotation being at an angle to its direction of motion.

6. The type of transition curves generally provided on hill roads, is ________
a) lemniscate
b) cubic parabola
c) circular
d) spiral
Answer: d
Clarification: In case of transition curves, if traffic condition is mixed then provision of speed is limited to 60% of max. Speed of vehicle. One side of curve will higher then the other side for the case of accident of traffic.
Ideal Transition curve: Spiral or clothoid (Lemniscate for modern roads).
Valley curve: Cubic parabola.
Vertical curve: Parabola.

250+ TOP MCQs on Works and Answers

Civil Engineering Drawing Multiple Choice Questions on “Works”.

1. An ____________ repair work is defined as something which could not have been foreseen and which could cause danger to health and property.
a) urgent
b) routine
c) ultimate
d) emergency
Answer: c
Clarification: Emergency call out contractors will usually make safe to enable full and proper repairs to be undertaken during normal working hours. The types of work they attend include:
• Severe roof leaks
• Burst pipes
• Blocked drains
• Blockage of your only toilet
• Loss of electrical power or light
• Loss of gas
• Loss of heating in cold weather where the temperature is 5 degrees or below and there is no other form of heating available
• Loss of immersion heater if this is the only source for hot water.

2. These are less urgent repair work that can wait a short time up to 28 days are ____________
a) moderate repair work
b) less urgent repair work
c) routine repair work
d) urgent repair work
Answer: c
Clarification: Before being dealt with and include minor problems with toilets, baths, sinks, doors or windows sticking, plaster repairs, brickwork, and other nonurgent internal and external repairs.

3. Which among these is not considered as classification of works according to their cost?
a) Major work
b) Minor work
c) Petty work
d) Grand work
Answer: d
Clarification: Major work – The work costing more than Rs.22 lakhs is termed as Major work, and the estimate for such work is known as Major estimate.
Minor work – The work costing more than Rs.50000 but not exceeding Rs.2 lakh is termed as Minor work, and the estimate for such work is known as a minor estimate.
Petty work – The work whose cost does not exceed Rs.50000 is termed as Petty work, and the estimate for such work is known as Petty estimate.

4. What are the employees know as, who are employed directly on the work for the actual execution of a specific work?
a) Co-workers
b) Assistant
c) Work charged Establishment
d) Work in-charge
Answer: c
Clarification: Usually, work-supervisors, chaukidars, mates, mistris, etc, are employed as wrokcharged establishment. Their pay is charged direct to the work for which provision is made in the estimate of the work by adding 2% to 3% over the estimated amount of the work.

5. _______________ is any system that conveys fluids for a wide range of applications. Plumbing uses pipes, valves, plumbing fixtures, tanks, and other apparatuses to convey fluids.
a) drilling
b) carpentry
c) masonry
d) plumbing
Answer: d
Clarification: Heating and cooling (HVAC), waste removal, and potable water delivery are among the most common uses for plumbing, but it is not limited to these applications. The word derives from the Latin for lead, plumbum, as the first effective pipes used in the Roman era were lead pipes.
In the developed world, plumbing infrastructure is critical to public health and sanitation. Boilermakers and pipefitters are not plumbers, although they work with piping as part of their trade, but their work can include some plumbing.

6. Which work involves the use of spanner/pipe wrenches?
a) Masonry
b) Plumbing
c) Carpentry
d) Masonry
Answer: b
Clarification: The pipe wrench (US), Stillson wrench or Stillsons (UK) is an adjustable wrench/spanner used for turning soft iron pipes and fittings with a rounded surface. The design of the adjustable jaw allows it to lock in the frame, such that any forward pressure on the handle tends to pull the jaws tighter together. Teeth angled in the direction of turn dig into the soft pipe.

7. In P.W.D, name the person who submits the budget.
a) Superintending Engineer
b) Executive Engineer
c) Secretary of P.W.D
d) Chief Minister
Answer: c
Clarification: P.W.D is headed by the Director General (DG) who is also the Principal Technical Advisor to the Government of India. The regions and sub-regions are headed by Special DGs and Additional DGs respectively, while the zones in all state capitals (except a few) are headed by Chief Engineers. Now A Days, a new post of Chief Project Manager (CPM) has been created to head major prestigious projects of CPWD. CPMs are equivalent to the rank of Chief Engineers in CPWD.

8. These are repairs which materially affect your comfort or convenience. In certain circumstances these repairs could be treated as emergencies.
a) False
b) True
Answer: a
Clarification: The list includes:
• Partial loss of electrical power or light
• Unsafe power, lighting socket or electrical fitting
• Partial loss of water or gas supply
• Loss or partial loss of space or water heating
• Blocked or leaking drains, or soil stack
• Toilet blocked or not flushing
• Blocked sink, bath or basin
• Tap which cannot be turned
• Leak from water or heating pipe, tank or cistern
• Leaking roof
• Insecure external window, door or lock
• Loose or detached stair hand rail
• Rotten timber floor or stair tread
• Door entry phone not working
• Extract fan not working in a kitchen or bathroom with no other ventilation.

9. Which department deals with water supply, sanitary work?
a) Public Health Engineering Department
b) Irrigation Department
c) Canal Department
d) Public Work Department
Answer: a
Clarification: The Public Health Engineering Department (PHED) is a public agency in Pakistan and India that is responsible for rural water supply.
During natural disasters the agency has the responsibility to get drinking water to the public as well as collaborating with aid organisations for this purpose. For example during a cyclone in Sindh in 2007 PHED submitted a proposal to UNICEF for a permanent solution to clean drinking water Sibi District. The agency also coordinated relief efforts with UNICEF in Ziarat District during the 2008 earthquake.
Historically the PHED had been responsible for all water and sanitation projects at the district level, however following the devolution of 2001 become subordinate to elected nazims at district and tehsil level.

10. Which type of repair work is only carried out once in four years?
a) Urgent repair
b) Quadrennial repair
c) Special repair
d) Moderate repair
Answer: b
Clarification: Quadrennial repairs comprising items of works which need only be carried out once in four years, such as painting or varnishing doors and windows or repairing roads.

11. Which maintenance service is carried out to maintain the aesthetics of buildings and services?
a) Special repair
b) Day to Day Repairs
c) Additions and Alterations
d) Preventive Maintenance
Answer: a
Clarification: This maintenance service is carried out to maintain the aesthetics of buildings and services as well as to preserve their life, some works like white washing, distempering, painting, cleaning of lines, tanks, etc. are carried out periodically. These works are planned on year to year basis.

250+ TOP MCQs on Geometrical Construction and Answers

Civil Engineering Drawing Multiple Choice Questions on “Geometrical Construction”.

1. Which of the following is not a line segment?
a) Bamboo
b) Ruler
c) Laser beam
d) Pencil

Answer: c
Clarification: A line segment is a part of a line that is bounded by two distinct end points, and contains every point on the line between its endpoints. A ray is a line with one end goes forever in the other direction. Here option Laser beam is ray and others are line segment.

2. The angle bisector bisects the angle exactly __________
a) Perpendicular
b) 60 degree
c) Half
d) Any ratio

Answer: c
3. What must you be given to construct an equilateral triangle by compass?
a) One side
b) One angle
c) Two side
d) One angle and one side
Answer: a

4. Which of the property given below is false regarding a square?
a) A square is a particular case of a rectangle and a rhombus simultaneously
b) A square is a parallelogram with right angles and equal sides
c) The diagonals of a square cut at 90 degree
d) A square is a particular case of a rectangle only

Answer: d

5. If you are given only a compass and a ruler which angle is not possible to construct?
a) 37.5
b) 33.75
c) 40
d) 120

Answer: c
Clarification: It is not possible to construct an angle that is not a multiple of 15. Angle 40 is not a multiple of 15 while 120 is multiple of 15. Angle 37.5 is formed by angular bisector of angle 75 which is again a multiple of 15. Angle 33.75 is formed by bisecting angle 135 two times, is also a multiple of 15.

6. N number of circles are formed with a common centre, what is that geometry called?
a) Inscribed circle
b) Sphere
c) Circumscribed circle
d) Concentric circle

Answer: d
Clarification: Two or more circles with same centre and different radii, are termed as concentric circle. Inscribed circle is the largest possible circle drawn inside a polygon, each side of the polygon must be tangent to the circle, while a circle containing a polygon in its interior touching all vertices of a plane figure is called circumscribed circle.

7. What is the value of each angle of a regular hexagon?
a) 120
b) 135
c) 720
d) 108

Answer: a
Clarification: Sum of the interior angles of a regular polygon = (n – 2)*180, n= no. of sides
Of a regular hexagon = (6 – 2)*180 = 720
Each interior angles of a regular polygon = sum of interior angle/no. of sides
= 720/6 = 120.

9. If X is a point on AB and A – X – B (X is between A and B), then AB =?
a) AX + XB
b) AB – XB
c) AB – XA
d) AX – XB

Answer: a

250+ TOP MCQs on Masonry Platform, Water Tank & Motor Garage and Answers

Civil Engineering Drawing Multiple Choice Questions on “Masonry Platform, Water Tank & Motor Garage”.

1. The latrine seat with flushing cistern, flushing pipes are, etc., are usually taken as ______ set for estimation.
a) Equal
b) One
c) Two
d) Separate

Answer: b
Clarification: A latrine is a toilet or an even simpler facility which is used as a toilet within a sanitation system. For example, it can be a communal trench in the earth in a camp to be used as emergency sanitation, a hole in the ground (pit latrine), or more advanced designs, including pour-flush systems.
The term “latrine” is still commonly used in emergency sanitation situations, as well as in army camps. Nowadays, the word “toilet” is more commonly used than “latrine”, except for simple systems like “pit latrine” or “trench latrine”. The use of latrines was a major advance in sanitation over more basic practices such as open defecation, and helped control the spread of many waterborne diseases.

2. According to ISI method of measurement, the order of the sequence is _______
a) Length, breadth, height
b) Breadth, height, Length
c) Height, Length, breadth
d) Width, Length, breadth

Answer: a
Clarification: The first dimension is length (L). Length is always the longest side of the box that has a flap. The second dimension is width (W). Width is the second longest side with a flap. The third dimension is height (H). Height is the only dimension without a flap.

3. The detention period in a septic tank is assumed to be at _________
a) 20 min
b) 30 min
c) 40 min
d) 25 min

Answer: b
Clarification: A septic tank can be defined as primary sedimentation tank with large detention time (12 to 36hrs against a period of 2hrs in an ordinary sedimentation tank). In un-sewered rural and urban areas septic tanks are suitable for disposal of night soil. But sufficient water should be available as water is required for flow of the night soil from latrine to the septic tank and for proper functioning of the septic tank.

4. Cost of fittings and their fixing is specified for the following sanitary fittings ________
a) Water closets
b) Flushing pipes
c) Sinks
d) All of the mentioned

Answer: d
Clarification: (Catagorized also as hygienic fittings and tubing) were developed and are used because they are cleanable; either by dismantling a system and manually cleaning it or using a CIP (clean in place) process. They limit entrapment areas where bacteria could form or harbor. They are also corrosion resistant.

5. The value of ‘C’ of Indian type W.C. shown in the given figure is _________

a) 400 mm
b) 550 mm
c) 250 mm
d) 500 mm

Answer: d
Clarification: We have mostly two types of commodes in our society. One is called WC and other is called Indian commode (in which you have to sit like wicket keeper sits when bowler is bowling). WC or Wc commonly refers to a Water toilet (i.e. a flush toilet). It may also refer to Winston Churchill.

6. The area of a sloping surface of a protective embankment of mean height d, side slopes S: 1 and length L is __________
a) d x d x s
b) (d2 x (ds)2)1/2
c) L.D (1 + s2)1/2
d) 2 L.D (1 + s2)1/2

Answer: c
Clarification: An embankment dam is a large artificial dam. It is typically created by the placement and compaction of a complex semi-plastic mound of various compositions of soil, sand, clay, or rock. It has a semi-previous waterproof natural covering for its surface and a dense, impervious core. This makes such a dam impervious to surface or seepage erosion. Such a dam is composed of fragmented independent material particles. The friction and interaction of particles binds the particles together into a stable mass rather than by the use of a cementing substance.

7. The minimum width of a septic tank is taken as _________
a) 85 cm
b) 70 cm
c) 60 cm
d) 75 cm

Answer: d
Clarification: A septic tank can be defined as primary sedimentation tank with large detention time (12 to 36hrs against a period of 2hrs in an ordinary sedimentation tank). In un-sewered rural and urban areas septic tanks are suitable for disposal of night soil. But sufficient water should be available as water is required for flow of the night soil from latrine to the septic tank and for proper functioning of the septic tank.

8. The inspection pit or chamber is a manhole provided in a base drainage system for ________
a) The inspection pit or chamber is a manhole provided in a base drainage system
b) The inspection pit or chamber is a manhole provided in a base drainage system
c) The inspection pit or chamber is a manhole provided in a base drainage system
d) All of the mentioned

Answer: d