Reinforced Concrete

Sample Problems


Sample Problems

Codes

Methods of Analysis

Floor frame with spandrel beam (November 2018)

Beam DEF is supported by spandrel beams ...

  1. the critical negative moment

  2. the critical positive moment

  3. the critical shear force

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Two-span beam: (November 2019)

Refer to the figure shown ...

  1. Determine the moment at B

  2. Determine the moment at C

  3. The critical positive moment

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Development Length

Cantilever beam, development of top and bottom bars: (November 2019)

Refer to the cantilever beam shown...

  1. Total required length of bar A ...

  2. Total required length of bar B ...

  3. Total required length of bar A if ...

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Concrete Mix

Proportioning concrete trial batch (November 2018)

Given the following data for proportioning trial ...

  1. Solid volume of water, cement, ...

  2. How much cement is needed ...

  3. Combined volume of ...

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Flexure and Shear

Flexure and Shear

Doubly reinforced beam with 4 legs of stirrups: (November 2018)

The beam reinforced for negative moment at the column ...

  1. moment capacity

  2. shear strength provided by shear reinforcement

  3. nominal shear strength

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Shear

Rectangular beam with four legs of stirrups (November 2019)

Given the following data of the beam shown..

  1. the minimum beam width

  2. the design shear strength

  3. the required effective depth

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Beam Deflection

Deflection of rectangular concrete beam: (November 2019)

Given the following data of a singly-reinforced beam...

  1. the cracking moment

  2. the transformed moment of inertia

  3. the immediate deflection

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Column

Spiral column

Slenderness ratio and number of bars of a spiral column (November 2018)

Given the data of the spiral column

  1. slenderness ratio

  2. steel ratio

  3. number of bars

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Column Interaction Diagram

Interaction diagram, rectangular column: (November 2019)

Rectangular tied column interaction diagram.

  1. design axial strength

  2. design moment

  3. required column depth

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Footing

Combined Footing

Combined footing, given shear diagram (November 2019)

Refer to the combined footing shown:

  1. punching shear stress

  2. wide beam shear stress

  3. number of bars

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Wall Footing

Wall footing subject to axial load and moment (November 2018)

A 300-mm thick concrete wall ...

  1. footing width to prevent uplift

  2. overturning moment

  3. maximum pressure

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Pile Cap

Rectangular pile cap with nine piles (November 2018)

A column is supported by a pile cap ...

  1. punching shear stress

  2. critical beam shear stress

  3. critical design moment

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