UBC Impex Interview Questions and Answers

Doubly reinforced beam has reinforcement in both tension and compression zones, while singly reinforced beam has reinforcement only in tension zone.

• Doubly reinforced beam can withstand higher loads and bending moments.

• Singly reinforced beam is simpler and cheaper to construct.

• Doubly reinforced beam is used in structures with heavy loads or long spans.

• Singly reinforced beam is used in structures with lighter loads or sh...read more

Shape factor is a measure of the efficiency of a beam's cross-sectional shape in resisting bending. Different types of beams in steel structures include I-beams, H-beams, and C-beams.

• Shape factor is calculated by dividing the moment of inertia of the beam's cross-section by the product of the beam's width and the cube of its depth.

• I-beams are commonly used in construction due to their high strength-to-weight ratio.

• H-be...read more

Slope and deflections of cantilever and simply supported beams under standard loading system.

• Cantilever beams have fixed support at one end and free at the other.

• Simply supported beams have support at both ends.

• Standard loading system includes point load, uniformly distributed load, and triangular load.

• Slope is the angle of deflection at a point on the beam.

• Deflection is the displacement of a point on the beam from its...read more

Point of contraflexure is where bending moment changes sign in a beam.

• It is the point where bending moment is zero.

• It occurs in simply supported beams at the center.

• In cantilever beams, it occurs at the fixed end.

• In overhanging beams, it occurs at the free end of the overhang.

• It is important to consider in beam design to prevent failure.

The maximum and minimum percentage of steel in columns depends on various factors such as the type of column, its height, and the load it needs to bear.

• The percentage of steel in columns can range from 0.5% to 6% depending on the type of column.

• For short columns, the percentage of steel can be as low as 0.5% while for tall columns, it can go up to 6%.

• The load that the column needs to bear also plays a crucial role in d...read more

Doubly reinforced beams are used when the depth of the beam is limited and the load-bearing capacity needs to be increased.

• Doubly reinforced beams are used in construction where the depth of the beam is limited and the load-bearing capacity needs to be increased

• They are commonly used in bridges, high-rise buildings, and parking garages

• Doubly reinforced beams have steel reinforcement bars in both the compression and ten...read more

The minimum percentage of steel in a slab depends on various factors such as load, span, and thickness.

• The minimum percentage of steel in a slab is generally 0.15% to 0.2% of the cross-sectional area.

• The percentage of steel may vary depending on the type of slab, such as one-way or two-way slab.

• The thickness of the slab also plays a crucial role in determining the minimum percentage of steel.

• The load and span of the sl...read more