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০০। A concrete structure is set on fire and the temperature raises to 1000°C. The strength of concrete as compared to original strength reduces to
- ক) 10%
- খ) 15%
- গ) 20%
- ঘ) 25%.
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০১। A covering of concrete placed on the exposed top of an external wall, is known as
- ক) cornice
- খ) coping
- গ) frieze
- ঘ) lintal.
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০২। A cut in frame of a door to receive the shutter, is called
- ক) louver
- খ) stop
- গ) horn
- ঘ) rebate.
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০৩। A floor constructed with 3 mm marble chips, is known
- ক) mosaic floor
- খ) terrazo floor
- গ) chips floor
- ঘ) marble floor.
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০৪। A floor constructed with the 4 to 6 mm marble chips, is known
- ক) reinforced marble floor
- খ) terrazo floor
- গ) marble floor
- ঘ) chip floor
- ঙ) mosaic floor.
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০৫। A pointed arch which forms isosceles or equilateral triangle, is generally known as
- ক) three centred arch
- খ) two centred arch
- গ) Lancet arch
- ঘ) Bull‘s eye arch.
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০৬। A pre-stressed concrete pile is
- ক) easy to handle
- খ) lighter in weight
- গ) extremely durable
- ঘ) suitable for heavy load
- ঙ) all the above.
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০৭। A projecting piece usually provided to support a truss, is
- ক) cornice
- খ) coping
- গ) frieze
- ঘ) lintal.
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০৮। A roof which slopes in four directions, is called
- ক) shed roof
- খ) gable end roof
- গ) hipped roof
- ঘ) gambrel roof.
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০৯। A solid core of rock is formed in side the cylinder in the case of
- ক) auger boring
- খ) percussion drilling
- গ) diamond drilling
- ঘ) wash boring.
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১০। A stair should not have pitch more than
- ক) 25°
- খ) 30°
- গ) 40°
- ঘ) 50°
- ঙ) 60°.
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১১। A temporary rigid structure having platforms to enable masons to work at different stages of a building, is known as
- ক) scaffolding
- খ) dead shore
- গ) raking shore
- ঘ) under pinning.
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১২। A wall constructed to resist the pressure of an earth filling, is called
- ক) retaining wall
- খ) breast wall
- গ) buttress
- ঘ) parapet wall.
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১৩। A wall constructed with stones to protect slopes of cuttings in natural ground from the action of weathering agents, is called
- ক) retaining wall
- খ) breast wall
- গ) buttress
- ঘ) parapet wall.
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১৪। A wooden block fixed on back side of a door frame on its post, is known as
- ক) cleat
- খ) stop
- গ) horn
- ঘ) none of these.
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১৫। A wooden block hinged on post outside a door, is known
- ক) cleat
- খ) stop
- গ) horn
- ঘ) none of these.
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১৬। According to National Building Code, the hydrants in water mains is provided at minimum interval of
- ক) 50 m
- খ) 60 m
- গ) 75 m
- ঘ) 90 m.
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১৭। According to Rankine‘s formula, minimum depth of foundations, is
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১৮। An arch constructed with finely dressed stones, is known
- ক) ashlar arch
- খ) rubble arch
- গ) gauged arch
- ঘ) axed arch.
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১৯। An arch may fail due to
- ক) uneven settlement of abutments
- খ) sliding of voussoirs
- গ) crushing of the material
- ঘ) all the above.