WorksheetsBuilding Construction Quiz 3
Total questions: 40
Worksheet time: 20mins
Which instrument gives the highest precision in angular measurement during site setting out?
Dumpy level
Theodolite
Optical square
Spirit level
The main disadvantage of using black cotton soil as a foundation base is:
Low permeability
High shear strength
Expansive nature
High porosity
Which soil test gives direct information about the cohesion and angle of internal friction?
SPT
Core cutter
Triaxial shear test
Auger boring
What is the function of ‘sight rail’ in setting out?
Support formwork
Guide for excavation depth
Foundation base
Floor level marker
The bearing capacity of a soil is mainly influenced by:
Water table depth
Soil color
Building design
Roof slope
What is the minimum overlap length of wall ties in cavity wall construction?
50 mm
75 mm
100 mm
25 mm
Timbering method used in deep trenches with soft soil and groundwater presence is:
Open poling
Box sheeting
Runners and laggings
Braced sheeting
What is the usual spacing of wall ties in a cavity wall horizontally and vertically?
450 mm x 300 mm
900 mm x 450 mm
300 mm x 300 mm
600 mm x 600 mm
In under-reamed piles, bulb diameter is generally:
1.5 times the shaft diameter
3 times the shaft diameter
Equal to shaft
Twice the shaft
The angle between sight lines in a two-peg test is ideally:
30°
45°
90°
180°
What is the recommended slope of ground surface away from the wall to avoid dampness?
1 in 10
1 in 20
1 in 40
1 in 5
In raft foundation, reinforcement is generally placed in:
Only top layer
Bottom and top layers
Only near columns
Only in edges
How is lateral support provided in deep trenching in very loose soils?
Dewatering
Sand filling
Close sheeting
Stepped excavation
A horizontal DPC should be laid at a minimum of how many mm above ground level?
75 mm
50 mm
25 mm
100 mm
Which method of waterproofing is used below ground level basement walls?
Integral
Membrane
Surface treatment
Cavity walling
The most effective method for protecting walls from rising damp is:
Double plaster
Damp-proof membrane
Wall cladding
External paint
Bulbs in under-reamed piles resist:
Lateral forces
Uplift forces
Vertical dead loads
Shear
Partition walls made of hollow concrete blocks are preferred because:
They are strong
They are moisture absorbent
They are lightweight and provide thermal insulation
They are cheap
Why are cavity walls not preferred in areas with high rainfall and wind?
Not aesthetic
Require complex footing
Moisture may bridge across cavity
Heavy material
Most suitable foundation for a waterlogged site is:
Strip foundation
Isolated footing
Pile foundation
Stepped footing
Purpose of cross bracing in trench timbering is to:
Improve finish
Transfer loads from sides to struts
Hold tools
Provide working space
The primary purpose of leveling during setting out is to:
Check height of doors
Ensure vertical alignment
Maintain proper reduced levels
Control concrete mix
Which damp proofing method is considered permanent?
Membrane
Integral treatment
Surface coating
Painting
Plaster of Paris is most likely used in partition walls for:
Moisture resistance
Strength
Quick installation and decoration
Fire resistance
Which type of foundation is suitable where bearing stratum is deep and soft clay exists?
Strip foundation
Well foundation
Pile foundation
Raft foundation
Which foundation type resists both vertical loads and uplift?
Isolated footing
Strip footing
Under-reamed piles
Pad footing
The effectiveness of DPC depends on:
Color of DPC
Shape of wall
Continuity of layer
Type of flooring
Which timbering system is suitable for loose soil excavation of more than 6 m depth?
Soldier system
Box sheeting
Horizontal sheeting
Poling board
The main cause of efflorescence in walls is:
Lack of curing
Improper finishing
Water carrying soluble salts
Brick porosity
The angle of repose of soil is important in:
Designing beams
Laying floors
Sloped excavation
Pouring concrete
Water table is considered critical in excavation when it is:
2m below trench
5m below trench
At or above base of excavation
More than 10m below
The term “strutting” in timbering refers to:
Floor joists
Wall partitions
Horizontal support between poling boards
Wooden flooring
Why is a damp-proof course provided below window sills sometimes?
For aesthetics
To prevent condensation
To avoid lateral moisture seepage
For anchoring
How does thermal movement affect partition walls?
It strengthens them
No effect
Causes cracks if not allowed for
Improves insulation
Which soil has the least shear strength?
Clay
Peat
Gravel
Silt
Which is more suitable for vertical DPC in external walls?
Tar felt
Plastic sheet
Bitumen mastic
Lime coating
The thickness of cavity in a cavity wall can range between:
10–20 mm
25–100 mm
100–200 mm
5–15 mm
Wall footing is most suitable for:
RCC frame buildings
High-rise buildings
Load-bearing walls in low-rise buildings
Partition walls
Which one is a non-rigid partition material?
Concrete
Brick
Glass
Gypsum board
A composite wall may consist of:
Only one type of material
RCC and steel
Different materials like stone and brick for better performance
Only plastic
