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Low Rise Construction Assessment 1 – Case Study Answer




Topic:: Construction

Document Type:: Essay (any type)

Subject:: Engineering /CDR

Deadline :*:  As Per Required

Number of Words:: 2000

Citation/Referencing Style:: Chicago


Aim of Task


The aim of the Case Study is to encourage students to reflect on the content of the Module notes provided so that they fully understand the topics covered in CME101 Low Rise Construction.  It is designed to encourage students to undertake further research and learning in support of these Modules notes, as well as start applying their new knowledge to specific situations.


Figure 1: Level One Plan View of New Construction



Task Description


The floor plan above is an extension of an existing building.  This building has a Ground Floor, Level 1 and Roof.  The selected suspended floor type (Level 1) is a 150 mm thick ‘in-situ’ reinforced concrete slab.  As shown in the plan view, the suspended floor will be supported by a 270 mm wide double-brick cavity wall (loadbearing) at all the sides and edges.  Assume that the suspended floor will be supported on both leaves of the cavity walls (which include door openings not shown).  Additional internal support is a universal beam, which will be supported on two reinforced concrete columns.


Provide a report to describe the design and construction information of this suspended floor slab.  Your report should answer the following questions.


Question 1

Explain whether the slab is one-way or two-way span.


Question 2

Provide a deflection diagram of this slab under loading, indicating tension and compression fibres.  There is no necessary need to use a scale ruler or know the exact amount of deflection.  This is to be a rough sketch only.


Question 3

Draw the Cross-Section of X – X using a suitable scale ruler to facilitate the construction process.  No need to provide a Detailed Drawing of the slab to wall junction in this question.  Pay critical attention to the slab itself, including reinforcement.


Question 4

Provide an annotated sketch to show the slab to wall connection (no scale required).


Question 5

To satisfy the BCA (‘Building Code of Australia’) recommendations for sound insulation, assume that this floor will need to achieve the following:

  • Rw (Sound Reduction Index) = 50
  • IIC (Impact Insulation Class) = 50

Using the available information, find whether this design is satisfactory to achieve the above requisites.  If not, suggest solutions to achieve these requisites.


Question 6

Considering fast construction and fewer supports required during construction, the owner believes that composite concrete with steel formwork may be a better solution for this slab.  Despite having this belief, the owner is unsure whether this alternative would increase slab thickness.  Assuming a live load of 4kPa, evaluate the indicative thickness of composite concrete with steel formwork construction using Data Sheet 1 (see attached).  This would serve to assist the owner with decision-making.


Question 7

Provide a discussion (maximum 700 words) to answer “whether the selected slab type [i.e. in-situ reinforced concrete] is the most suitable suspended floor type for the selected case”.  Compare the pros and cons of the commonly available suspended floor types.  To develop your discussion you may consider either all or some of the following parameters:

  • Construction-related factors e.g., speed, supports and/or lifting requirements;
  • Cost-effectiveness;
  • Sound insulation;
  • Thermal comfort;
  • Durability

Figure 2: Common Suspended Floor Types



Data Sheets 1 and 2: Indicative Slab Thickness of Composite Concrete and Steel Formwork Slab Construction (Cement Concrete and Aggregates Australia, 2003)




  • The use of graph paper for the drawings is encouraged wherever required.
  • In addition to the content of Module notes, students are encouraged to undertake their own research.
  • To complete university assignments, research must be done using Scholarly Articles and Applied Publications. Clicking this link should provide you with reasons why –
  • To find Scholarly Articles, the best place is the Curtin University Library Database. In addition to scholarly works, Applied Publications are also reliable sources of information.  These articles are published by professional bodies, such as the AIB (, AIQS ( and CIOB (
  • In addition, you are encouraged to network with industry experts. The information they provide should be considered a reliable source of information.  Such verbal discussions should be acknowledged by referencing.
  • All written and diagrammatic material sourced from books, journal articles and professional websites MUST be acknowledged to avoid academic integrity issues. Turnitin will check your submission for any form of plagiarism, including similarities among students’ submissions.




Your submission should insert a scanned copy of your drawings (using .jpeg for example) into a Word document that must then be converted to PDF to be uploaded to Blackboard.  Note: scanning a hard copy of your work to a PDF will cause issues and not allow uploading to Blackboard.


For advice on how to name and save your assessments, please refer to the Preparing Files for Assessment Submission Stud-e-note on the OUA Construction Management Blackboard site (under Assessment Guides).  Also be sure to include your name, student number and unit title in the document – get into the habit of creating a cover page and even a header/footer with details.


Late submissions will be penalised as per the Curtin Late Assessment Policy as stated in the Unit Outline.



Marking Criteria

Your Assessment 1 submission will be marked according to the marking rubric outlined below:


CME101 Assessment 1 – Case Study (25%)
Student Name _____________________________________
UHD LHD D C P F Score Comments
Question 1 – Slab Action (5%)
Question 2 – Deflection Diagram (10%)
Question 3 – Section X-X (25%)
Question 4 – Slab to Wall Junction (25%)
Question 5 – BCA Sound Insulation Requirements (10%)
Question 6 – Composite Concrete and Steel Formwork Alternative (5%)
Question 7 – Discussion (20%)