Construction Methods interview questions

1. A.open cut with sides sloped below the soil's angle of repose or benched in steps, avoiding shoring where space around the pit permits
2. B.factory-cast hollow-core slabs, wall panels and segments erected by crane and connected through grouted sleeves or wet joints, trading site labour for logistics and tolerances
3. C.soldier piles with timber lagging above the water table, sheet piles in water-bearing ground, and contiguous or secant piles where adjacent buildings must be protected
4. D.closely spaced small wells on a header pipe with a vacuum pump lowering the water table about 5 to 6 m per stage, deeper wells used beyond that

Answer + AI explanation with Pro

1. A.Slipform vs jump form
2. B.Battered excavation
3. C.Mivan aluminium formwork
4. D.Top-down construction

Answer + AI explanation with Pro

1. A.Battered excavation — prefabricated wall and slab panels cast monolithically in a 4 to 7 day floor cycle with plaster-free finish, economical only above 150 to 200 repetitions of one layout
2. B.Battered excavation — soldier piles with timber lagging above the water table, sheet piles in water-bearing ground, and contiguous or secant piles where adjacent buildings must be protected
3. C.Battered excavation — factory-cast hollow-core slabs, wall panels and segments erected by crane and connected through grouted sleeves or wet joints, trading site labour for logistics and tolerances
4. D.Battered excavation — open cut with sides sloped below the soil's angle of repose or benched in steps, avoiding shoring where space around the pit permits

Answer + AI explanation with Pro

1. A.factory-fabricated tapered built-up I-frames with cold-formed Z purlins and metal sheeting bolted on site, giving clear spans of 30 to 90 m for warehouses
2. B.prefabricated wall and slab panels cast monolithically in a 4 to 7 day floor cycle with plaster-free finish, economical only above 150 to 200 repetitions of one layout
3. C.soldier piles with timber lagging above the water table, sheet piles in water-bearing ground, and contiguous or secant piles where adjacent buildings must be protected
4. D.closely spaced small wells on a header pipe with a vacuum pump lowering the water table about 5 to 6 m per stage, deeper wells used beyond that

Answer + AI explanation with Pro

1. A.Shoring systems
2. B.Mivan aluminium formwork
3. C.Battered excavation
4. D.Slipform vs jump form

Answer + AI explanation with Pro

1. A.Shoring systems — prefabricated wall and slab panels cast monolithically in a 4 to 7 day floor cycle with plaster-free finish, economical only above 150 to 200 repetitions of one layout
2. B.Shoring systems — closely spaced small wells on a header pipe with a vacuum pump lowering the water table about 5 to 6 m per stage, deeper wells used beyond that
3. C.Shoring systems — soldier piles with timber lagging above the water table, sheet piles in water-bearing ground, and contiguous or secant piles where adjacent buildings must be protected
4. D.Shoring systems — continuously rising form on hydraulic jacks at 150 to 300 mm per hour around the clock, versus climbing form lifted one storey at a time after each pour

Answer + AI explanation with Pro

1. A.open cut with sides sloped below the soil's angle of repose or benched in steps, avoiding shoring where space around the pit permits
2. B.factory-fabricated tapered built-up I-frames with cold-formed Z purlins and metal sheeting bolted on site, giving clear spans of 30 to 90 m for warehouses
3. C.basement slabs cast from ground level downward on diaphragm walls and plunge columns while the superstructure rises, the method behind cut-and-cover metro stations
4. D.600 to 1200 mm thick RC wall cast in 3 to 6 m panels excavated under bentonite or polymer slurry with stop-ends, forming both retaining and permanent basement wall

Answer + AI explanation with Pro

1. A.Slipform vs jump form
2. B.Battered excavation
3. C.Pre-engineered building
4. D.Diaphragm wall

Answer + AI explanation with Pro

1. A.Diaphragm wall — factory-fabricated tapered built-up I-frames with cold-formed Z purlins and metal sheeting bolted on site, giving clear spans of 30 to 90 m for warehouses
2. B.Diaphragm wall — 600 to 1200 mm thick RC wall cast in 3 to 6 m panels excavated under bentonite or polymer slurry with stop-ends, forming both retaining and permanent basement wall
3. C.Diaphragm wall — soldier piles with timber lagging above the water table, sheet piles in water-bearing ground, and contiguous or secant piles where adjacent buildings must be protected
4. D.Diaphragm wall — open cut with sides sloped below the soil's angle of repose or benched in steps, avoiding shoring where space around the pit permits

Answer + AI explanation with Pro

1. A.closely spaced small wells on a header pipe with a vacuum pump lowering the water table about 5 to 6 m per stage, deeper wells used beyond that
2. B.open cut with sides sloped below the soil's angle of repose or benched in steps, avoiding shoring where space around the pit permits
3. C.basement slabs cast from ground level downward on diaphragm walls and plunge columns while the superstructure rises, the method behind cut-and-cover metro stations
4. D.factory-fabricated tapered built-up I-frames with cold-formed Z purlins and metal sheeting bolted on site, giving clear spans of 30 to 90 m for warehouses

Answer + AI explanation with Pro

1. A.Slipform vs jump form
2. B.Well-point dewatering
3. C.Shoring systems
4. D.Pre-engineered building

Answer + AI explanation with Pro

1. A.Well-point dewatering — soldier piles with timber lagging above the water table, sheet piles in water-bearing ground, and contiguous or secant piles where adjacent buildings must be protected
2. B.Well-point dewatering — closely spaced small wells on a header pipe with a vacuum pump lowering the water table about 5 to 6 m per stage, deeper wells used beyond that
3. C.Well-point dewatering — prefabricated wall and slab panels cast monolithically in a 4 to 7 day floor cycle with plaster-free finish, economical only above 150 to 200 repetitions of one layout
4. D.Well-point dewatering — 600 to 1200 mm thick RC wall cast in 3 to 6 m panels excavated under bentonite or polymer slurry with stop-ends, forming both retaining and permanent basement wall

Answer + AI explanation with Pro

1. A.open cut with sides sloped below the soil's angle of repose or benched in steps, avoiding shoring where space around the pit permits
2. B.600 to 1200 mm thick RC wall cast in 3 to 6 m panels excavated under bentonite or polymer slurry with stop-ends, forming both retaining and permanent basement wall
3. C.factory-fabricated tapered built-up I-frames with cold-formed Z purlins and metal sheeting bolted on site, giving clear spans of 30 to 90 m for warehouses
4. D.prefabricated wall and slab panels cast monolithically in a 4 to 7 day floor cycle with plaster-free finish, economical only above 150 to 200 repetitions of one layout

Answer + AI explanation with Pro

1. A.Top-down construction
2. B.Mivan aluminium formwork
3. C.Battered excavation
4. D.Well-point dewatering

Answer + AI explanation with Pro

1. A.Mivan aluminium formwork — basement slabs cast from ground level downward on diaphragm walls and plunge columns while the superstructure rises, the method behind cut-and-cover metro stations
2. B.Mivan aluminium formwork — factory-cast hollow-core slabs, wall panels and segments erected by crane and connected through grouted sleeves or wet joints, trading site labour for logistics and tolerances
3. C.Mivan aluminium formwork — prefabricated wall and slab panels cast monolithically in a 4 to 7 day floor cycle with plaster-free finish, economical only above 150 to 200 repetitions of one layout
4. D.Mivan aluminium formwork — factory-fabricated tapered built-up I-frames with cold-formed Z purlins and metal sheeting bolted on site, giving clear spans of 30 to 90 m for warehouses

Answer + AI explanation with Pro

1. A.600 to 1200 mm thick RC wall cast in 3 to 6 m panels excavated under bentonite or polymer slurry with stop-ends, forming both retaining and permanent basement wall
2. B.basement slabs cast from ground level downward on diaphragm walls and plunge columns while the superstructure rises, the method behind cut-and-cover metro stations
3. C.factory-cast hollow-core slabs, wall panels and segments erected by crane and connected through grouted sleeves or wet joints, trading site labour for logistics and tolerances
4. D.continuously rising form on hydraulic jacks at 150 to 300 mm per hour around the clock, versus climbing form lifted one storey at a time after each pour

Answer + AI explanation with Pro

1. A.Slipform vs jump form
2. B.Top-down construction
3. C.Shoring systems
4. D.Well-point dewatering

Answer + AI explanation with Pro

1. A.Slipform vs jump form — 600 to 1200 mm thick RC wall cast in 3 to 6 m panels excavated under bentonite or polymer slurry with stop-ends, forming both retaining and permanent basement wall
2. B.Slipform vs jump form — factory-cast hollow-core slabs, wall panels and segments erected by crane and connected through grouted sleeves or wet joints, trading site labour for logistics and tolerances
3. C.Slipform vs jump form — soldier piles with timber lagging above the water table, sheet piles in water-bearing ground, and contiguous or secant piles where adjacent buildings must be protected
4. D.Slipform vs jump form — continuously rising form on hydraulic jacks at 150 to 300 mm per hour around the clock, versus climbing form lifted one storey at a time after each pour

Answer + AI explanation with Pro

1. A.prefabricated wall and slab panels cast monolithically in a 4 to 7 day floor cycle with plaster-free finish, economical only above 150 to 200 repetitions of one layout
2. B.open cut with sides sloped below the soil's angle of repose or benched in steps, avoiding shoring where space around the pit permits
3. C.factory-fabricated tapered built-up I-frames with cold-formed Z purlins and metal sheeting bolted on site, giving clear spans of 30 to 90 m for warehouses
4. D.factory-cast hollow-core slabs, wall panels and segments erected by crane and connected through grouted sleeves or wet joints, trading site labour for logistics and tolerances

Answer + AI explanation with Pro

1. A.Well-point dewatering
2. B.Diaphragm wall
3. C.Precast concrete construction
4. D.Mivan aluminium formwork

Answer + AI explanation with Pro

1. A.Precast concrete construction — factory-cast hollow-core slabs, wall panels and segments erected by crane and connected through grouted sleeves or wet joints, trading site labour for logistics and tolerances
2. B.Precast concrete construction — 600 to 1200 mm thick RC wall cast in 3 to 6 m panels excavated under bentonite or polymer slurry with stop-ends, forming both retaining and permanent basement wall
3. C.Precast concrete construction — basement slabs cast from ground level downward on diaphragm walls and plunge columns while the superstructure rises, the method behind cut-and-cover metro stations
4. D.Precast concrete construction — open cut with sides sloped below the soil's angle of repose or benched in steps, avoiding shoring where space around the pit permits

Answer + AI explanation with Pro

1. A.closely spaced small wells on a header pipe with a vacuum pump lowering the water table about 5 to 6 m per stage, deeper wells used beyond that
2. B.soldier piles with timber lagging above the water table, sheet piles in water-bearing ground, and contiguous or secant piles where adjacent buildings must be protected
3. C.open cut with sides sloped below the soil's angle of repose or benched in steps, avoiding shoring where space around the pit permits
4. D.factory-fabricated tapered built-up I-frames with cold-formed Z purlins and metal sheeting bolted on site, giving clear spans of 30 to 90 m for warehouses

Answer + AI explanation with Pro

1. A.Mivan aluminium formwork
2. B.Pre-engineered building
3. C.Battered excavation
4. D.Shoring systems

Answer + AI explanation with Pro

1. A.Pre-engineered building — prefabricated wall and slab panels cast monolithically in a 4 to 7 day floor cycle with plaster-free finish, economical only above 150 to 200 repetitions of one layout
2. B.Pre-engineered building — open cut with sides sloped below the soil's angle of repose or benched in steps, avoiding shoring where space around the pit permits
3. C.Pre-engineered building — factory-fabricated tapered built-up I-frames with cold-formed Z purlins and metal sheeting bolted on site, giving clear spans of 30 to 90 m for warehouses
4. D.Pre-engineered building — continuously rising form on hydraulic jacks at 150 to 300 mm per hour around the clock, versus climbing form lifted one storey at a time after each pour

Answer + AI explanation with Pro

1. A.600 to 1200 mm thick RC wall cast in 3 to 6 m panels excavated under bentonite or polymer slurry with stop-ends, forming both retaining and permanent basement wall
2. B.open cut with sides sloped below the soil's angle of repose or benched in steps, avoiding shoring where space around the pit permits
3. C.basement slabs cast from ground level downward on diaphragm walls and plunge columns while the superstructure rises, the method behind cut-and-cover metro stations
4. D.continuously rising form on hydraulic jacks at 150 to 300 mm per hour around the clock, versus climbing form lifted one storey at a time after each pour

Answer + AI explanation with Pro

1. A.Pre-engineered building
2. B.Battered excavation
3. C.Top-down construction
4. D.Shoring systems

Answer + AI explanation with Pro

1. A.Top-down construction — factory-fabricated tapered built-up I-frames with cold-formed Z purlins and metal sheeting bolted on site, giving clear spans of 30 to 90 m for warehouses
2. B.Top-down construction — continuously rising form on hydraulic jacks at 150 to 300 mm per hour around the clock, versus climbing form lifted one storey at a time after each pour
3. C.Top-down construction — basement slabs cast from ground level downward on diaphragm walls and plunge columns while the superstructure rises, the method behind cut-and-cover metro stations
4. D.Top-down construction — prefabricated wall and slab panels cast monolithically in a 4 to 7 day floor cycle with plaster-free finish, economical only above 150 to 200 repetitions of one layout

Answer + AI explanation with Pro