CE-603-B Precast and Modular Construction - May 2023 Question Paper

Under each question, How to answer lists the points an answer should cover, outlined by CampusPrep from the syllabus. Check the details against your textbook.

1. 7 Marks
   aExplain in brief about the different types of Structural Systems used in Prefabricated Structures?
   How to answer

   • Define prefabricated structural systems
   • List types: large panel, frame, box, mixed systems
   • Brief features of each type
   • Suitability and examples
2. 7 Marks
   bExplain in detail about the concept of modular coordination and state its significance in prefabricated structures.
   How to answer

   • Define modular coordination and basic module
   • Explain grid, tolerances and standardization
   • Steps for implementation in precast
   • Significance: interchangeability, economy, speed
3. 4 Marks
   aList out the System of Prefabrication and mention its advantage and disadvantage
   How to answer

   • List prefabrication systems: open, closed, partial, total
   • Explain each system briefly
   • Advantages: speed, quality, economy
   • Disadvantages: transport, joints, initial cost
4. 10 Marks
   bDiscuss the process of production, transportation and erection of prefabrication.
   How to answer

   • Production: moulding, casting, curing, QC
   • Transportation: handling, stacking, equipment
   • Erection: lifting, placing, jointing, propping
   • Safety and sequence considerations
5. 6 Marks
   aIllustrate classification of Wall panels and Shear walls.
   How to answer

   • Define wall panels and shear walls
   • Classification criteria: load-bearing, function, location
   • Types of shear walls
   • Sketch classification tree
6. 8 Marks
   bWith the Flow chart explain the manufacturing process of roof and floor slabs.
   How to answer

   • Flow chart of manufacturing: batching to curing
   • Steps for roof slabs
   • Steps for floor slabs
   • Curing, demoulding and storage
7. 7 Marks
   aWrite briefly about types of wall panels.
   How to answer

   • Define wall panels in precast construction
   • Types: load-bearing, non-load bearing, sandwich
   • Brief function of each
   • Applications
8. 7 Marks
   bWrite a brief note on Column structures.
   How to answer

   • Define column structures in precast frames
   • Types and cross-sections
   • Connections and erection
   • Advantages and uses
9. 5 Marks
   aExplain expansion joint and flexibility joint.
   How to answer

   • Define expansion joint: purpose and location
   • Define flexibility joint: purpose and behaviour
   • Differentiating features
   • Neat sketches of joints
10. 9 Marks
    bDesign a concrete wall panel of 8 m height and 5 m long and 200 mm thick and restrained against rotation at the base and restrained at the ends. If it is to carry a load of 180 kN at the top. Another factored load horizontal to the wall is 8.45 kN at the top. Check the safety of the wall. $f_{ck}=20$, $f_{y}=415$. Check the shear in the wall if the vertical lad is 864 kN.
    How to answer

    • Compute slenderness and eccentricity for 8 m x 5 m x 200 mm panel
    • Check axial capacity with $f_{ck}=20$ for 180 kN load
    • Check bending due to 8.45 kN horizontal load
    • Check shear for 864 kN vertical load and safety verdict
11. 6 Marks
    aAnalyse the problems in design because of joint flexibility.
    How to answer

    • Define joint flexibility in precast design
    • Effects on stiffness, moments and deflections
    • Problems: cracking, leakage, instability
    • Remedial design considerations
12. 8 Marks
    bGeneralize the steps involved in the process of disuniting of prefabricated structures.
    How to answer

    • Define disuniting / dismantling concept
    • Sequential steps: propping to lifting
    • Handling and storage of units
    • Safety and re-erection aspects
13. 6 Marks
    aWhat are the connections and list out the different types of connections?
    How to answer

    • Define connections in precast construction
    • List types: dry, wet, bolted, welded, dowel
    • Brief function of each type
    • Selection criteria
14. 8 Marks
    bCompare the merits and demerits of expansion joints in prefabricated structures.
    How to answer

    • Define expansion joints in precast
    • Merits: crack control, thermal movement
    • Demerits: leakage, maintenance, cost
    • Comparative summary table
15. 6 Marks
    aIllustrate the IS code provision for abnormal effects.
    How to answer

    • Define abnormal effects: impact, explosion, seismic
    • Relevant IS code clauses
    • Design provisions and load combinations
    • Examples of application
16. 8 Marks
    bDescribe in brief about any two of the following:

    1. i)Damping
    2. ii)Earthen Walls
    3. iii)Degree of Progressivity
    How to answer

    • Select any two: Damping / Earthen Walls / Degree of Progressivity
    • Definition and key principles for each
    • Relevance to precast / modular construction
    • Brief examples or sketches