This is a group assignment with 3 students per group. Please note, student groups are formed by the
subject coordinator on CANVAS. For assessment purposes, each student’s individual component is worth
16%, and the group component 4%. There are three slab and beam design options as follows: Option 1 is
for a residential building; Option 2 is for a non-residential building; and Option 3 is for an industrial
building (see Figures below). All surfaces of the slab and beam are exposed to an internal environment as
the building will have an external glazed weatherproof façade. Assume all slab and beam elements are
constructed using standard formwork and compaction is required. Each member of the group must
complete the element sizing and detailing of ONE of the given THREE options. The completed group
assignment must cover all three options and submitted as one bound assignment.
NOTE: Each member must have a separate lead page detailing their name, student number and option
number to identify their individual section completed and a lead page for the group section with all group
member names and student numbers that contributed to the group section.
Individual Component (16% of the total subject marks)
Concrete slab (8%) – Element sizing and detailed drawings
For your chosen option, submit computations for the section sizing of a reinforced concrete floor slab
continuous over three spans as shown on the attached drawings (effective span). The floor live load is to
be 3.5 kPa for all Options and is taken as uniformly distributed only. Normal weight concrete is to be used.
Concrete strength is 40 MPa and steel reinforcement is 500 MPa. Determine the minimum concrete cover
requirements.
1. Using L/d of 33 for all three Options and assuming N12 bars, determine the slab thickness required for
each option rounded to the next nearest 5. Calculate the adjusted effective depth “d”. Based on the
ultimate loading, determine the main reinforcement required (both top and bottom). Consider both
critical end and interior spans, for all positive and negative bending moments. Note that the slab is cast
integrally with the edge beams and internal beams. Determine the transverse bar diameter and spacing.
Make a summary table of your results for bar diameters and spacing indicating various bar locations.
Concrete Beam (8%) – Element sizing and detailed drawings
For your chosen option, using L/d of 20 for Option 1, L/d of 24 for Option 2 and L/d of 28 for Option 3
and assuming N24 bars and N12 ligatures, determine the adjusted effective depth of the beam required for
each option rounded to the next nearest 10. Submit computations for the structural design of a typical
interior reinforced concrete beam, continuous over four spans as per attached plan. The loadings are
obtained from the floor slab loads and thicknesses as determined in calculations above. The beams for
each of the 3 options have different nominal widths of 600mm, 1200mm and 1800mm.
For the purposes of this assignment and for simplicity, the beam should be considered as a rectangular
section only (not as a T-beam).
1. Using the charts provided, determine the beam depth and reinforcement required (both top and bottom)
and the cover to reinforcement. Shear ligatures can be assumed to be N12 at 150mm centres for the end
quarter-spans and at 300mm centres for the middle half-span. Consider all 4 spans for both positive and
negative bending moments. Make a summary table of your results for number of bars and diameters,
indicating the various bar locations.
Use the bending moment coefficients from section 6.10 of AS3600-2018 Concrete Structures to determine
positive and negative bending moments for both the slab and beam designs.
Set out your calculations with headings as appropriate for each section and highlight your final results.
Drawings
Drawings must be neatly drawn, either hand drawn or AutoCAD.
Clearly label all components of each diagram drawn. For EACH option:
1. Show reinforcement layout on plan for the slabs.
2. Draw a beam elevation showing the 4 spans and draw 2 typical sections, one at mid-span and another
50mm away from the column face.
Group Component (4% of the total subject marks)
Comparison of the three systems
Make a summary table showing the features of each (slab and beam thicknesses, widths etc.) Comment on
the characteristic differences and any items you consider relevant from a construction point of view (e.g.
ease or speed of construction, considering the resources required including Materials Plant, Labour and
Time). Do not just list the differences in quantities of reinforcement and bar diameters.
Submission
Compile the design calculations and drawings from each group member and the group component into
one submission. The names of each of the group members must be on the front cover sheet. Each
completed option must be clearly separated with a lead page and name of student. All three students will
share the same mark for the group component, but the individual component will be graded individually.
Drawings are to be drawn on A3 paper or sized to print on A3 paper if computer generated. Assignments
submission is online to the CANVAS portal. Design calculations to be done on A4 paper. Assignments
must be submitted as a single bound document with the 3 options and handed to your tutor during your
tutorial session on Friday 26th August 2022.Assessment Criteria
Slab sizing (Max 5 marks) – full and complete analysis of end-span and interior-span of slab including
showing competency in using L/d ratios to determine serviceability, and accurately determining steel
quantities from simplified bending moment diagrams for ultimate limit state. Provide calculations for
cover, minimum steel for shrinkage and transverse requirements, max and min spacing checks, anchorage
lengths, and termination lengths.
Slab Drawings (Max 3 marks) – A3 sized paper to be used, drawing in landscape orientation, clear
drawing title, scale, concrete and steel grades, cover, slab thickness and all other necessary information
for a builder to construct the slab. Drawings shall be neatly organised and follow drawing conventions.
Drawings can be either hand drawn or using autocad. Draw slab in plan and section. Bar lengths and
terminations to be rounded up. There is no need to provide shear reinforcements in the slab.
Beam sizing (Max 5 marks) – as for slabs. But design only the internal beam (both end-span and interior
span)
Beam Drawings (Max 3 marks) – as for slabs. But draw beam in elevation and 2 sections (one at mid
span and one at 50mm from the face of the column). Draw only 1 ligature in the beam elevation and
indicate the extent to which this is provided; ie use N12 at 150 at the end quarter spans and N12 at 300 the
middle spans. NOTE: Wider beams may need 2 or 3 sets of ligatures, with a separate piece at the top.
Group component (Max 4 marks)
Provide a table to compare the pertinent parameters of the 3 options. Assuming that your design is carried
out correctly, there should be a clear trend for slab and beam depths. Describe the differences in slab and
beam dimensions, and discuss why these changes occur. Comment on the characteristic differences based
on the L/d ratios including advantages and disadvantages of each option; describe any items you consider
relevant from a construction point of view (e.g. ease or speed of construction, buildability, overall design
and considering the resources required including Materials Plant, Labour and Time). Do not just list the
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