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Right answer is (B) Sulphate

The explanation: Sulphate content of bricks to be used in masonry should be checked. These ATTACK the mortar and weakens it, leading to DEVELOPMENT of cracks. They appear after 2-3 YEARS of construction.

The CORRECT answer is (b) False

The best I can EXPLAIN: Lifts can carry people from a range of just 4 to a good 20 number. To decide this, the weight of each PERSON is to be CONSIDERED. It is assumed as 68kg for one person.

Correct choice is (c) Burnt sienna

The BEST I can EXPLAIN: Raw sienna IMPARTS yellow colour to paint. To get black colour, soot is added. Blue colour can be obtained by adding ultramarine pigment.

Right answer is (c) DISTEMPERS

To explain I would SAY: Distempers have chalk as a base, water as a carrier and emulsifying AGENTS like glue or casein.To impart colour, pigments are added.

Correct answer is (a) True

The best explanation: In mud PLASTERING, after 2 coats of plastering, a wash of earth, cow DUNG and cement in 3:2:1 PROPORTION is done. It does not require curing, but should be allowed to dry in shade for 3-4 days.

The correct option is (a) Staircase

The EXPLANATION: Staircase is ALSO used to refer to the STAIRS, HANDRAIL, balusters, other structures as a whole. The SPACE housing and all these are also called staircase.

The correct option is (c) 3

Easy explanation: Transparent GLASS is used when OBJECTS below it are to be VIEWED, translucent glass is used where visibility of objects below is to be blocked. Toughened glass is usually used as it is more strong and resistant to BREAKING.

The CORRECT option is (c) Stretcher

Best EXPLANATION: Brick are laid with their end TOWARDS the FACE of the wall in header bond.In the Flemish bond, ALTERNATIVE header and stretcher are placed in each course. In the English bond, alternative header and stretcher courses are laid.

Correct option is (d) Brick jali

Explanation: Bricks are ARRANGED in such a way that a jali (HOLE) is formed. These provide cross ventilation, natural lighting and reduction in cost greatly. They can be USED in parapets, living rooms, ETC.

Correct option is (d) Chips, powder, CEMENT

To elaborate: Terrazo refers to the PRESENCE of SMALL decorative chips EMBEDDED in cement paste. The chips may be of GLASS, marble, etc.Along with chips, marble powder or magnesite powder is also added.

Right choice is (b) METAKAOLIN

For explanation: Fly ash, Rise husk are dark in colour. Metakaolin is usually BRIGHT white in colour and is the PREFERRED choice for architectural concrete where appearance is important.

Correct option is (b) 1:3

To explain I would say: Generally, 1:3 is the RATIO used for cement mortar to be used in STONE masonry. 15% of cement can be replaced by LIME to improve workability.

Right option is (b) 2

Easy explanation: TENSIONING can be mono-strand or multi-strand.In mono-strand, only one strand is tensioned at a time. In multi-strand, MULTIPLE strands are tensioned SIMULTANEOUSLY.

The correct choice is (a) 3

The best I can explain: The MATERIALS can be classified into 3 CATEGORIES. They are a FLEXIBLE material, semi RIGID materials and rigid materials.

The CORRECT answer is (b) 5

Best EXPLANATION: The five materials used in stairs are STONE, metal, WOOD, R.C.C. and BRICK.

The correct option is (C) Vertical, handrail

The explanation is: The baluster is USUALLY wooden or metallic. It is a vertical MEMBER provided at SPECIFIC intervals and is used to SUPPORT the handrail.

The correct answer is (c) Shingles

Explanation: Shingles are commonly USED in hilly areas and for building low cost houses. They are NAILED to SUPPORTING structure to MAKE roof COVERING.

Right choice is (d) 6

Easy explanation: There are 6 TYPES of SLOPING roofs available. They are steel sloping roofs, lean-to-roofs, COUPLE roofs, couple close roofs, collar BEAM roofs and TRUSSED roofs.

Correct ANSWER is (C) Single leaf door

The explanation is: Single leaf door is the one CONSISTING of a single rigid panel of any material that FILLS the DOORWAY.

Right option is (b) Bleeding

The BEST I can explain: Bleeding can be GOOD as WELL as bad for fresh concrete. Sometimes due to improper mixing, the water forms a thin layer on the outer SURFACE, by OOZING out through voids.

Correct ANSWER is (a) Hydroxylated CARBOXYLIC acid

The BEST explanation: Fluoro-silicate is an accelerator.Gypsum is a retarder and SURKHI is a TYPE of mineral admixture.

Correct OPTION is (d) Stagnating water

Easy explanation: Curing is the process of maintaining moisture in FRESHLY laid concrete to strengthen it.For flat surfaces like floors and slabs, ponding or stagnating water is the best method. TEMPORARY bund can be made with mortar and filled with water to CURE.

The correct choice is (b) Coursed rubble masonry II

The explanation is: In type I, STONES of the same height are to be used and courses are of the same height. In type III, stones are to be of different height, course height NEED not be equal. In type II, as the FIGURE indicates, stones are of different height, course is of equal height.

Right answer is (b) Compact sandstone

Explanation: Granite and compact sandstone are generally used for BUILDINGS SITUATED in

industrial towns. Marble SLAB and slate are used for electrical switch boards and gneiss is used for heavy ENGINEERING works.

The correct answer is (b) AESTHETIC ceiling is obtained

Explanation: The FILLER material can be arranged in a systematic WAY, pattern to give an aesthetically pleasing ceiling. The filler materials can be exposed, instead of PLASTERING them. 5-10% saving of concrete, more THERMAL comfort and the load on columns and foundation are reduced.

Right choice is (d) Emulsion

The best explanation: Emulsion paint contains POLYSTYRENE and polyvinyl acetate as a BASE. They are durable and retain their colour for long. They dry WITHIN 15 minutes and hard dry within 2 hours.

Correct choice is (c) Wrinkling

Explanation: Grinning occurs when under COAT and final coat are of different colours. The OPACITY is insufficient and background colour is visible. RUNNING occurs if the surface is too smooth; paint run off from such PARTS. Flaking occurs DUE to poor adhesion, leading to peeling off of paint.

Right OPTION is (c) IS 1634

Easy explanation: IS 1634 GIVES the code of practice for the DESIGN and construction of wooden stairs for houses.

The correct answer is (d) Water proof

To explain: BRICKS, as a material is very porous and permeable to moisture, FLUIDS. It can absorb any LIQUID spilled on it, stain the SURFACE and eventually decay. Cleaning becomes difficult. They need to be sealed periodically with water PROOFING chemicals.

The correct choice is (a) 2

The explanation is: The two types of COMPOSITION SHINGLES are organic and FIBREGLASS. It is USED to COVER pitched or sloping roofs.

Right choice is (c) 2

The explanation is: There are 2 hoppers and 1 cylinder in the APPARATUS. Concrete is poured in hopper A (first one).The hinged BOTTOM is opened, concrete FALLS to 2^nd hopper B.Again, hinged bottom is opened, concrete is allowed to FALL into cylinder C.

Right option is (b) 0.5-0.6

Best EXPLANATION: Ideal water cement ratio for general WORKS is 0.45.During machine MIXING, it can be in the range of 0.4-0.5.Hand mixing is done by labourers and maximum 0.6 can be ALLOWED.

Correct answer is (c) English garden-wall bond

To explain: Dutch bond is a MODIFIED form of English bond.Three fourth bat is used next to header in stretcher course. Bricks are LAID in zig-zag way in zig-zag bond. In FACING bond, bricks of different THICKNESS are used in facing and backing of walls.

Right option is (C) REBATED

For explanation I would say: The rebated joints INVOLVES a double L shape (|—-^| )of 2 STONE blocks. It ensures proper GRIP and is used in arches, stones laid on slopes.

Correct OPTION is (b) Pozzolana

To EXPLAIN I would say: Finely powdered Pozzolana is added to lime or CEMENT MORTAR can rapidly set the mortar.It can be used under water as it allows quick SETTING.

The correct choice is (b) Arch

Explanation: USING arch foundation can reduce COST up to 40%.Foundation is an important part of building and COSTS HIGHER. A reduction is achieved, without compromising on strength.

The correct choice is (d) Ferro-Cement

To explain: Ferro-Cement is a SYSTEM that reinforces mortar with metal (STEEL, iron bars).It is used for the construction of relatively thin structure LIKE hull of boat, SHELL roofs, ETC.

Correct option is (d) M15

The explanation: Cement concrete is USED to provide DPC at PLINTH LEVEL. 38-50mm thickness of M15 (1:2:4) cement concrete is provided and it SERVES the PURPOSE under normal conditions.

The correct choice is (b) COARSE sand

The explanation is: Coarse sand layer of about 75-100MM thickness is provided over the entire area under the floor. Over this, a layer of PLAIN CONCRETE with a ratio of 1:4:8 of 100mm thickness is LAID.

Right choice is (c) Ceramic

Best explanation: PAINT and Zinc is applied to give a GOOD appearance and to prevent CORROSION. Oils are used to enhance appearance by bringing out the colour and lustre. It also excludes MOISTURE from copper roofs.

Correct CHOICE is (b) Semi-cylindrical

The explanation is: The BARREL TILES are semi-cylindrical in shape. They are laid in alternating columns of convex and concave tiles. They can be produced from CLAY, metal, concrete or PLASTIC.

Right OPTION is (d) EVES

To EXPLAIN I WOULD say: Ridge is the apex line of a sloping roof.Rafters are wooden members extending from ridge to eves. Pitch is the INCLINATION of the sloping roof to horizontal.