Structures 3 Midterm - Winter 2025 Study Notes

Structures 3 Midterm - Winter 2025 Notes

Problem Overview

• A building owner has purchased a facility for repurposing it as a factory.
• The specific feature of interest is the second storey, which is framed with concrete beams.
• The task involves analyzing a loading pattern for the new factory configuration on the second floor.

Loading Pattern Information

• The problem defines a loading configuration as listed below:
  • P1:
  • SL (Service Load): $P1_{SL} = 35 ext{ kN}$
  • SD (Service Dead load): $P1_{SD} = 20 ext{ kN}$
  • SP (Service Point load): $P1_{SP} = 45 ext{ kN}$
  • Additional load: $SL = 28 ext{ kN}$

Unit Loading Specifications

• The following unit loads are provided:
  • Service Dead Load: $2.2 ext{ kPa}$
  • Service Live Load: The pattern is characterized as for a library study room.

Beam Spacing Calculation

• The objective is to determine the maximum beam spacing (tribal width) using the Dead + Live load combination.
• The result should be rounded to one decimal place.

Structural Material Considerations

• Concrete Properties:
  • Characterized by a compressive strength of 25 MPa.
• Exposure Conditions:
  • The building is subject to exterior exposure conditions.
• Aggregate Specifications:
  • The maximum aggregate size allowed is 20 mm.
• It's important to ensure that the self-weight of the concrete beams is taken into account in calculations.

Auxiliary Information

• Additional construction notes:
  • The schematic indicates the use of 10M shear steel with a quantity of 4 at a spacing of 20M consisting of the specified concrete setup.
  • Dimensions for structural configurations are referenced as 535, 50, and 3000 (assumed measurements in millimetres).
• A comprehensive analysis will involve calculations reflecting total load combinations, shear and moment considerations for the beam configurations, and the structural integrity as per loading and material specifications.