Mastic asphalt is generally used for
Damp proof course
Water proof layer
Partition walls
Both (A) and (B)
Correct Answer :
D. Both (A) and (B)
Related Questions
For a good building stone, its specific gravity should the greater than
1.5
1.7
2.2
2.7
The cement becomes unsound by the presence of excess
Sulphur
Magnesia
Lime
All of these
Pick up the plutonic rock from the following:
Granite
Dolerite
Basalt
All the above
Which one of the following is used for preparing porcelain?
Clay
Feldspar
Quartz
All of these
Sandstone is a (i) Sedimentary rock (ii) Aqueous rock (iii) Siliceous rock The correct answer is
Only (i)
Both (i) and (ii)
Both (i) and (iii)
All (i), (ii) and (iii)
The operation of removal of impurities or clay adhering to iron ores, is known as
Dressing
Calcination
Roasting
Smelting
Due to attack of dry rot, the timber
Cracks
Shrinks
Reduces to powder
None of these
The main constituent which imparts hydraulicity to hydraulic lime is
Calcium oxide
Silica
Clay
Water
Pick up the correct statement from the following:
For thin structures subjected to wetting and drying, the water cement ratio should be 0.45
For mass concrete structures subjected to wetting and drying, the water ratio should be 0.55
For thin structures which remain continuously under water, the watercement ratio by weight should be 0.55
All the above
The most important constituent of an oil paint, is
Thinner
Vehicle
Pigment
All the above
The filler used in plastic bitumen, is
Shale powder
Talc powder
Asbestos powder
Plastic powder
The pressure acting on the stones in stone masonry construction should be
Along the direction of bedding planes
At 45° to the direction of bedding planes
At 60° to the direction of bedding planes
Perpendicular to the direction of bedding planes
Dorry's testing machine is used for
Crushing test of stone
Hardness test of stone
Impact test of stone
Water absorption test
Assertion A : Pure lime takes a long time to develop adequate strength. Reason R : Pure lime has slow hardening characteristics. Select your answer according to the coding system given below:
Both A and R is true and R is correct explanation of A
Both A and R is true and R is not a correct explanation of A
A is true but R is false
A is false but R is true
Which one of the following is an air binding material?
Gypsum
Acid-resistant cement
Quick lime
All of these
Cast steel is manufactured by
Cementation process
Crucible process
Bessemer process
Open hearth process
Plaster of Paris is obtained by calcining
Bauxite
Gypsum
Lime stone
None of these
Fibre glass
Retains heat-longer
Has a higher strength to weight ratio
Is shock proof and fire retardant
All the above
The slag which floats on the surface of the molten iron generally contains
Lime (CaO) 45%
Silica (SiO2) 35%
Alumina (Al2O3) 12% and MgO, CaSO4, KMnO2 and FeO 8%
All the above
The ultimate tensile strength of structural mild steel is about
160 N/mm²
260 N/mm²
420 N/mm²
520 N/mm²
Number of bricks required for one cubic metre of brick masonry is
400
450
500
550
The presence of original rounded surface on the manufactured piece of timber, is called
Wane
Torn grain
Diagonal grain
Chipmark
Second class bricks
Are of dark brown colour
Produce a metallic sound when struck
Are well burnt
Are under burnt
Age of a tree may be ascertained by
Radius of its stem
Circumference of its stem
Number of branches
Number of annual rings
Pick up the correct statement from the following:
Lime is available in Free State
Lime is available by dissolving calcium carbonate in water
Lime is available by calcining calcium carbonate at 900°C
Lime is nothing but calcium chloride
The rocks formed by gradual deposition, are called
Sedimentary rocks
Igneous rocks
Metamorphic rocks
None of these
Three basic raw materials which are needed in large quantities for production of steel are
Iron ore, coal and sulphur
Iron ore, carbon and sulphur
Iron ore, coal and lime stone
Iron ore, carbon and lime stone
Specific gravity for most of the building stones lies between
1.5 to 2.0
2.0 to 2.5
2.5 to 3.0
3.0 to 3.5
The process of mixing clay, water and other ingredients to make brick is known as
Kneading
Moulding
Pugging
Drying
The frog of the brick in a brick masonry is generally kept on
Bottom face
Top face
Shorter side
Longer side