Explore topic-wise InterviewSolutions in .

This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.

101.

________________ are the pieces of timber which extends from the eves to the ridge.(a) Battens(b) Purlins(c) Eaves(d) RaftersThis question was posed to me in examination.My question is taken from Roofs topic in portion Roofing Materials of Construction & Building Materials

Answer»

Correct option is (d) Rafters

Easiest explanation: The LOWER EDGES of a roof which are resting up on or projecting beyond the SUPPORTING walls are known as the Eaves. Sometimes a thin board of wood is provided at the EVES to cover the end of the common rafters.
Discussion
102.

A wooden piece provided at the Ridge line of a sloping roof is known as the ____________(a) Truss(b) Verge(c) Ridge(d) Wall plateThis question was addressed to me in examination.This interesting question is from Roofs in chapter Roofing Materials of Construction & Building Materials

Answer»

Correct choice is (c) Ridge

To ELABORATE: Wall PLATES are the LONG wooden member which are embedded on the top of wall to receive the common rafters. The actually CONNECT the walls to the roof.
Discussion
103.

In mud-phuska terracing with tile paving, bitumen is spread over the R.C.C. slabs at the rate of ________ of bitumen per m^2 of the roof surface.(a) 0.7 kg(b) 1.7 kg(c) 2.7 kg(d) 3.7 kgThe question was asked in semester exam.My question is based upon Flat Terraced Roofing in division Roofing Materials of Construction & Building Materials

Answer»

Correct CHOICE is (b) 1.7 kg

The EXPLANATION is: In mud-phuska terracing with tile PAVING, bitumen is spread over the R.C.C. slabs at the rate of 1.7 kg of bitumen per m^2 of the roof surface. A layer of COARSE sand is spread over this bitumen at the rate of 0.6 cubic metres of sand for 100 m^3 of the roof surface.
Discussion
104.

In Jodhpur type roofing, ralthal laid should be cured for ___________ days.(a) Two(b) Three(c) Five(d) SevenThe question was asked in class test.Question is from Flat Terraced Roofing topic in section Roofing Materials of Construction & Building Materials

Answer»

Right choice is (d) Seven

Best EXPLANATION: In JODHPUR TYPE roofing, ralthal is laid in order to PROVIDE PROPER slope to the roof. It should be cured for seven days. Hydraulic lime should be used in this type of roofing.
Discussion
105.

Which of the following is used for both pitched as well as flat roofs?(a) Sheeting(b) Aluminium sheets(c) Decking(d) Asbestos cement sheetsThe question was asked in an interview.My query is from Roof Coverings for Pitched Roofs in portion Roofing Materials of Construction & Building Materials

Answer»

The correct answer is (c) Decking

The best I can explain: Decking and SHEETING are the two types of LIGHTWEIGHT roofing materials. Decking is used for both pitched as well as FLAT ROOFS. Sheeting is used for only pitched roofs.
Discussion
106.

The horizontal distance between the internal faces of walls or support is known as a ___________(a) Span(b) Truss(c) Verge(d) Wall platesThe question was posed to me in a job interview.Question is from Roofing Materials in portion Roofing Materials of Construction & Building Materials

Answer»

Correct OPTION is (a) Span

To explain I would say: The EFFECTIVE span indicates the horizontal DISTANCE between the centres of WALL or supports. WHEREAS, the Framework, usually of triangles and design to support the roof covering or ceiling over rooms, is known as a Roof Truss.
Discussion
107.

In a collar tie roof, a higher collar position gives a stronger roof.(a) True(b) FalseThe question was asked during an interview.The question is from Single and Double Roofs topic in division Roofing Materials of Construction & Building Materials

Answer» CORRECT option is (b) False

Explanation: In a collar tie ROOF, a LOWER collar POSITION gives a stronger roof. A collar tie roof is USUALLY used for spans up to 5 metres.
Discussion
108.

_________________ are the long wooden members which are embedded on top of the walls to receive the common rafter.(a) Valley(b) Wall plates(c) Verge(d) TrussThe question was asked in class test.This intriguing question originated from Roofing Materials in chapter Roofing Materials of Construction & Building Materials

Answer»

Right answer is (B) WALL plates

To explain: Wall plates actually connect the wall to the roof. Whereas, when TWO room surfaces meet together and form an internal angle, a valley FORMED.
Discussion
109.

_________ joint is used to connect the wooden tie and the feet of rafters in a couple of close roof.(a) Dovetail halved(b) Closed mortised and tenoned(c) Pin and tenoned(d) Open and pinI have been asked this question by my school principal while I was bunking the class.I'd like to ask this question from Single and Double Roofs in section Roofing Materials of Construction & Building Materials

Answer»

Right CHOICE is (a) Dovetail halved

The best I can EXPLAIN: Dovetail halved joint is USED to connect wooden tie and the feet of rafters in a couple of close roof. In a couple close roof, the ENDS of the couple of common rafters are connected a tie beam. It is used to PREVENT the rafters from spreading out of the wall.
Discussion
110.

The lower edges of a roof which are resting upon or projecting beyond the supporting wall are known as the _______________(a) Gables(b) Rafters(c) Eaves(d) Wall platesI got this question by my college director while I was bunking the class.My question comes from Roofing Materials in division Roofing Materials of Construction & Building Materials

Answer»

Correct ANSWER is (c) EAVES

Explanation: Sometimes, a thin board of wood is provided at the Eaves to cover the ENDS of the common rafters. Such a board is known as an Eaves board or FACIA board. It is usually 25 mm thick and 250 mm wide.
Discussion
111.

Which of the following types of roofing is used for timber roofs of verandah?(a) Mud-phuska terracing(b) Bengal terrace farming(c) Punjab terrace farming(d) Maharashtra terrace farmingThis question was posed to me during an internship interview.This is a very interesting question from Flat Terraced Roofing in division Roofing Materials of Construction & Building Materials

Answer»

Right ANSWER is (b) Bengal terrace farming

Explanation: Bengal terrace farming is used for timber roofs of the VERANDAH. In this TYPE of ROOFING, wooden RAFTERS are placed on some slope. Across these rafters, wooden battens are placed at 15 c/c.
Discussion
112.

The average thickness of the lime concrete laid in lime concrete and tiles roofing is ________(a) 5 cm(b) 10 cm(c) 15 cm(d) 20 cmI have been asked this question by my school principal while I was bunking the class.Origin of the question is Flat Terraced Roofing in division Roofing Materials of Construction & Building Materials

Answer» RIGHT choice is (B) 10 cm

The best explanation: The average thickness of the lime concrete laid in lime concrete and tiles roofing is generally 10 cm. It USUALLY consists of 2 parts of lime, 7 parts of BRICK ballast and 2 parts of surkhi.
Discussion
113.

Which of the following is not a type of flat terraced roofing?(a) Mud-terrace roofing(b) Lime-concrete terracing(c) Bengal terrace roofing(d) Steel tile roofingThis question was addressed to me by my school teacher while I was bunking the class.My question is from Flat Terraced Roofing topic in portion Roofing Materials of Construction & Building Materials

Answer»

Correct option is (d) Steel TILE roofing

Easy explanation: Flat TERRACED roofing is of VARIOUS types. These are mud-terrace roofing, lime-concrete terracing, Bengal terrace roofing, brick-jelly roofing, lightweight flat roofing, ETC.
Discussion
114.

In asbestos cement sheets, the laying always begins from __________(a) Rafters(b) Hips(c) Valleys(d) EavesThis question was addressed to me during an online interview.My enquiry is from Roof Coverings for Pitched Roofs in chapter Roofing Materials of Construction & Building Materials

Answer»

Correct answer is (d) Eaves

To explain I would say: Asbestos cement sheets can be either LAID from right to LEFT or from left to right. In asbestos cement sheets, the laying always begins from eaves. HENCE, the eaves COURSE is laid first.
Discussion
115.

In a king-post truss, which of the following types of joints is used to join the king-post to the ends of principal rafters at its head?(a) Dovetail joint(b) Open and pin join(c) Pin and tenoned joint(d) Tenon and mortise jointI have been asked this question during a job interview.This interesting question is from Trussed Roofs in section Roofing Materials of Construction & Building Materials

Answer»
Discussion
116.

Plain tiles are generally made of ___________(a) Timber(b) Marble(c) Steel(d) ClayThis question was posed to me by my college professor while I was bunking the class.Enquiry is from Roof Coverings for Pitched Roofs in chapter Roofing Materials of Construction & Building Materials

Answer»

Correct option is (d) Clay

To elaborate: Plain tiles are generally made of clay. they can ALSO be made of concrete but usually, clay tiles are more common. They are MANUFACTURED in rectangular SHAPES of thickness VARYING from 9 mm to 15 mm.
Discussion
117.

Which of the following is used to provide end support to the common rafters in a king-post truss?(a) King-post(b) Ridge beam(c) Queen-post(d) Tie beamThis question was posed to me in homework.This intriguing question comes from Trussed Roofs in chapter Roofing Materials of Construction & Building Materials

Answer»
Discussion
118.

The edge of a Gable, running between the Eaves and ridge is known as __________(a) Verge(b) Ridge(c) Eave(d) PitchThis question was addressed to me during an interview.The origin of the question is Roofing Materials in portion Roofing Materials of Construction & Building Materials

Answer» RIGHT option is (a) Verge

Easiest explanation: Whereas, the lower edges of a roof which are resting up on or PROJECTING beyond the SUPPORTING WALL are known as the Eaves.
Discussion
119.

Which of the following roofs slopes in two directions?(a) Lean-to-roof(b) Gable roof(c) Hip roof(d) Mansard roofI had been asked this question in exam.My enquiry is from Types of Roofs topic in section Roofing Materials of Construction & Building Materials

Answer»

Correct ANSWER is (b) Gable roof

Best explanation: Gable roof SLOPES in TWO directions. These two slopes meet at the apex line. Hip roofs and mansard roofs slope in FOUR directions while lean-to-roof slopes in ONE direction only.
Discussion
120.

In the figure of lime concrete and tiles roofing shown below, B represents _________(a) Coping(b) Lime concrete(c) R.C.C. slab(d) Ceiling plasterI got this question during a job interview.I'm obligated to ask this question of Flat Terraced Roofing in chapter Roofing Materials of Construction & Building Materials

Answer»

Right option is (c) R.C.C. SLAB

To elaborate: In the figure of lime CONCRETE and TILES roofing shown above, B represents the R.C.C. slab. In this figure, A represents lime concrete and C represents ceiling plaster. This type of roofing is usually adopted over reinforced CEMENT concrete roofing.
Discussion
121.

In a king-post truss, common rafters have the same slope as the principal rafters.(a) True(b) FalseThe question was asked in class test.Question is from Trussed Roofs topic in chapter Roofing Materials of Construction & Building Materials

Answer»

The CORRECT choice is (a) True

For explanation I would say: In a king-post truss, common RAFTERS have the same SLOPE as the principal rafters. The function of the principal rafters is to provide support to the PURLINS while the function of the purlins is to provide support to the common rafters.
Discussion
122.

When two roof surface meet together and form an internal angle, a ________ is formed.(a) Rafter(b) ValleyBarge(c) Gable(d) PitchThis question was addressed to me during an interview.My doubt is from Roofs topic in division Roofing Materials of Construction & Building Materials

Answer» RIGHT CHOICE is (b) ValleyBarge

Best EXPLANATION: Whereas, the inclination of sides of a roof to the horizontal plane is KNOWN as the Pitch and it can be expressed either in terms of degrees or as a ratio of RISE to span.
Discussion