CPCCBC4010 WT PB 8Feb23

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 CPC40120 - Certificate IV in Building and Construction CPCCBC4010 – Apply structural principles to residential and commercial constructions WRITTEN TASK PART B ASSESSOR NAME: Please CIRCLE the following: I have assessed the student and found them to be Satisfactory for all listed criteria to industry standards OR I have assessed the student and have marked Not Yet Satisfactory the criteria where competency has not been achieved. I have notified them of their result and they have signed confirming they have received their result and agree with the outcome. ASSESSOR SIGNATURE: DATE: STUDENT NAME: DATE: This is my own, original work. I have received the result of this assessment and agree with the outcome and the trainer’s assessment. I understood the feedback and had an opportunity to discuss it. STUDENT SIGNATURE: CIVBCCPC40120 CPCCBC4010 – Apply structural principles to residential and commercial constructions WT PB 8Feb23 © ACADEMIQUE 2023

 CPC40120 - Certificate IV in Building and Construction CPCCBC4010 – Apply structural principles to residential and commercial constructions WRITTEN TASK PART B This assessment uses a set of generic and workplace questions testing the candidate’s general knowledge and understanding of the general theory behind the unit. You are required to provide a written answer to each question. Your answer should be a minimum of one paragraph and clearly answer the question. Submit your own, original answers, not work copied from friends or the internet Written Task – Questions & Answers Q1. Briefly describe how the following footing systems perform when bearing structural load: CPCCBC4010 KE9.1, KE9.2, KE9.5 a) Bored pier footing:  Commonly used for residential and commercial projects.  used to support heavy, vertical loads for high-rise structures. b) Column footing:  Used to distribute a load over a large area. CIVBCCPC40120 CPCCBC4010 – Apply structural principles to residential and commercial constructions WT PB 8Feb23 © ACADEMIQUE 2023

 Adds strength.  Structurally strong. c) Stump footing:  Most common and familiar footing used for vertical support.  Stumps, timber, concrete are usually the materials used.  Cost effective. d) Drilled pile foundation:  Structurally strong  Supports heavy vertical loads e) Driven pile foundation:  bearing capacity of the pile is increased.  Great structural support.  Visually neat and clean Q2. Identify one potential structural issue for each of the following footing systems: CPCCBC4010 KE9.3, KE9.6 a) Concrete slab floors:  Good thermal mass  Strong and stable  Termite and rot resistant b) Mass concrete piers:  Strong and stable  Fire and termite resistant.  Requires little maintenance.  Can support large amount of weight. Q3. Identify the structural advantages of each of the following footing systems: CPCCBC4010 KE9.4, KE9.7, KE9.8, KE9.9 a) Reinforced piers and beams:  Prevents cracking to open up.  allows to carry heavier loads. CIVBCCPC40120 CPCCBC4010 – Apply structural principles to residential and commercial constructions WT PB 8Feb23 © ACADEMIQUE 2023

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 Adds strength. b) Screw piles:  Used to build deep foundations c) Waffle pod slabs:  Structurally strong.  Can withstand heavy loads.  Structurally sound during earthquakes.  Prevents the floor from collapsing. d) Brick bases:  Fireproof and termite proof.  Very good compressive strength Q4. Briefly explain why foundation movement must be taken into consideration when designing and constructing on-ground concrete slab floors. CPCCBC4010 KE10.1 (p)  It is important because the movement of the ground may cause cracking or snapping. Reason being why we add steel to further strengthen the concrete foundation. Thus, the on- ground concrete slab should be able to handle different ground stresses. Q5. Identify the structural advantages of the following: CPCCBC4010 KE10.1 (p), KE10.2, KE10.5 a) Suspended concrete floors:  Prevents moisture.  Can hold heavy loads. b) Timber floor frames:  Allows movements.  Manufacture timber is a slow burn. CIVBCCPC40120 CPCCBC4010 – Apply structural principles to residential and commercial constructions WT PB 8Feb23 © ACADEMIQUE 2023

c) Steel floor frames:  More flexible than timber  The ability to take the weight for a longer period if time. Less maintenance required d) Aluminium raised floors:  Lightweight and corrosion free.  Can also carry large loads.  Has a longer life span e) Solid hardwood fitted floors:  Natural which make it stronger and can withstand heavy loads.  Can allow more floor movements. f) Engineered wood fitted floors:  Designed to take healy weights.  Engineered to withstand different conditions such as high temperature, different kinds of loads, etc. Q6. Identify two actions during the installation of I-joists that may negatively affect their structural integrity. Provide a brief explanation for how each action may negatively affect the I-joists’ structural integrity. CPCCBC4010 KE10.3  Drilling or cutting into it. – It weakens the performance  Poor maintenance Q7. Answer the following questions about platform floor construction. CPCCBC4010 KE10.4 a) What are five components that make up platform floors?  Floor finish  Floor fixings  Floor joist CIVBCCPC40120 CPCCBC4010 – Apply structural principles to residential and commercial constructions WT PB 8Feb23 © ACADEMIQUE 2023

 Floor material  Fire resistance b) What are the structural disadvantages of using platform floors?  Exposed to outside weather conditions thus, harder to maintain leading to deterioration of the material. Q8. Answer the following questions about floor systems and their components. CPCCBC4010 KE10.6, KE10.7, KE10.8 a) Why are compressed sheets commonly used in the flooring of wet areas?  Lack of replacement  Highly resistant to moisture  Preventing from rotting b) What is one benefit of using vinyl sheet flooring in areas with high foot traffic?  Maintenance and easier to clean and install  Longer life span, durable c) What is one structural advantage of using tongue and groove boards for flooring?  Nice tight gaps giving it a nice surface finish Q9. Answer the following questions about autoclaved aerated concrete (AAC). CPCCBC4010 KE10.9, KE11.1 (p), KE16.0 a) Briefly describe the structural capability of AAC flooring panels. Description must include details on the following: CIVBCCPC40120 CPCCBC4010 – Apply structural principles to residential and commercial constructions WT PB 8Feb23 © ACADEMIQUE 2023

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 AAC loadbearing capability Strong load capabilities Fire resistant  AAC material properties Lightweight Strong load capabilities b) What are the structural limitations of using lightweight AAC as part of a composite loadbearing wall?  AAC is lightweight and compressive. Thus, needing a reinforcing steel. Q10. Identify one structural factor that must be considered when integrating tilt-up slab panels into composite walls. Briefly explain why this structural factor must be considered. CPCCBC4010 KE11.1 (p)  It is comprehensively strong but when lifting, it is at its weakest. Q11. Identify the structural advantages of using the following products in composite walls: CPCCBC4010 KE11.1 (p) a) Glue-laminated lumber:  less shrinkage  the glue gives it a much more load bearing capacity.  b) Laminated veneer lumber:  Structurally strong because of the grain of the timber goes the same way/consistent and also the glue is oven dried which allows heavier load support. Q12. Identify the structural advantages of the following products used in CPCCBC4010 CIVBCCPC40120 CPCCBC4010 – Apply structural principles to residential and commercial constructions WT PB 8Feb23 © ACADEMIQUE 2023

framed walls: KE11.2 a) Timber:  With the right wall design, timber has a heavy load capacity. b) Engineered timber products:  Increases the strength of the timber because we eliminate common timber weakness. c) Lightweight section steel:  Long lasting  Termite protection,  Doesn’t bend, fireproof Q13. Answer the following questions about masonry walls. CPCCBC4010 KE11.3 a) What makes a cavity brick masonry wall a good choice for areas that often experience rain?  Cause it allows for moisture or rain to drain stopping depthless or moisture from entering the house and helps air circulate in the cavity. b) What are the disadvantages of using single-leaf masonry walls?  Reduce the life span of the interior of the house. c) What behavioural properties make AAC a good choice for masonry walls?  Good soundproofing qualities, better insulation, help in fire resistant qualities. Q14. Answer the following questions about wall cladding. CPCCBC4010 KE12.1, KE12.2 CIVBCCPC40120 CPCCBC4010 – Apply structural principles to residential and commercial constructions WT PB 8Feb23 © ACADEMIQUE 2023

a) What are the structural disadvantages of using timber weatherboards as wall cladding?  Needs termite protection.  High maintenance.  Poor insulator b) How are wall coatings different from regular paint?  Regular paints are not designed as a water proofer or a hardener. Q15. Identify the structural advantages of the following products used in wall cladding: CPCCBC4010 KE12.3, KE12.4 (p), KE12.5, KE12.6 a) Corrugated metal sheeting:  Cost effective.  Highly durable.  Good in high winds and Fire resistant b) Fibre cement cladding:  Termite resistant  Can withstand different weather conditions. c) Tilt-up concrete panels:  Fast and with good load bearing capabilities  Fire resistant d) Fired bricks:  Compressive strength.  Good waterproofing  Fire resistant and termite proof e) Unfired bricks:  Good High winds  Compressive strength with good load bearing  Fire resistant and termite proof. CIVBCCPC40120 CPCCBC4010 – Apply structural principles to residential and commercial constructions WT PB 8Feb23 © ACADEMIQUE 2023

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f) AAC bricks:  Good waterproofing  Termite proof  Good compressive strength Q16. What structural factors must you consider when using compressed wood panelling as cladding? CPCCBC4010 KE12.4 (p)  Amount of moisture needs to be considered as this can affect the level of fire- resistant capability and effects on the lining. Q17. Identify one structural advantage and one structural disadvantage for each of the following: CPCCBC4010 KE13.1 a) Timber prefabricated roof trusses:  Advantage: holds the weight longer  Disadvantage: prone to warping, bending , or shrinking. b) Steel prefabricated roof trusses:  Advantage: Higher strength to weight ratio. Pest resistant Will buckle or melt. Poor insulation Poor sound resistance Q18. What are the five structural components of a hand cut timber roof? CPCCBC4010 KE13.2 CIVBCCPC40120 CPCCBC4010 – Apply structural principles to residential and commercial constructions WT PB 8Feb23 © ACADEMIQUE 2023

 Ridge board  Rafters  Joist  Purlins  Truss Q19. Identify one structural advantage and one structural disadvantage for each of the following roof types: CPCCBC4010 KE14.1, KE14.2, KE14.3, KE14.5, KE14.7 a) Box gable roof:  Allows water to run off easier the roof area which reduces the structural load.  Not good on high winds and easy to collapse. b) Dual pitch roof:  Allows higher efficiency for insulation.  Allows greater use for different materials.  Greater weight on foundation (disadvantage) c) Dutch gable and Dutch hip roof:  Good function against rain and high winds  Dutch gable needs more support. d) Hip and valley roof:  More strong roof ( self-supporting roof) against high winds  Prone to leaks, extra water running down e) Skillion roof:  Drains quickly and doesn’t carry much weight.  Weak in high winds Q20. Answer the following questions about roofs. CPCCBC4010 KE14.4, KE14.6 a) What parts of the building make up the gable end? CIVBCCPC40120 CPCCBC4010 – Apply structural principles to residential and commercial constructions WT PB 8Feb23 © ACADEMIQUE 2023

 The gable makes up the gable end b) What are the structural disadvantages of north light roofs?  The orientation of no protection to prevent the sunlight Q21. Briefly explain the importance of the following in the structural integrity of a roof: CPCCBC4010 KE14.8 a) Rafters:  Provides support for the roof.  Spreads the weight. b) Purlins:  Supports the correct spacing of the trusses or rafters.  Holds the roofing materials such as roofing sheets. Q22. Identify one structural advantage and one structural disadvantage for each of the following products used in roof cladding: CPCCBC4010 KE15.1 a) Concrete tiles:  Long lasting  Fire resistant  Carries weight.  Thermal insulation  Heavy (disadvantage) b) Clay tiles:  Brittle (Disadvantage)  Long lasting  Fire resistant CIVBCCPC40120 CPCCBC4010 – Apply structural principles to residential and commercial constructions WT PB 8Feb23 © ACADEMIQUE 2023

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 Carries weight.  Heavy (Disadvantage) c) Metal tiles:  Light  Easy to install  Holds their shape  Poor sound proofing (Disadvantage)  Cant carry heavy load (Disadvantage) Q23. Identify the structural advantages of the following types of roof claddings: CPCCBC4010 KE15.2, KE15.3 (p) a) Shakes:  Usually wooden and thicker  Light  More durable b) Shingles:  Usually concrete/stone  Good in preventing moisture. c) Short-run sheeting:  Can lap it over.  Good with high winds  Good in moisture prevention  Easy to install d) Long-run sheeting:  Can overlap.  Good in high winds  Good in moisture prevention CIVBCCPC40120 CPCCBC4010 – Apply structural principles to residential and commercial constructions WT PB 8Feb23 © ACADEMIQUE 2023

e) Metal sheeting:  Lightweight  Doesn’t absorb water.  Easy to install. Q24. Identify three roof sheet profiles and the structural advantages of using each of them as roof cladding. CPCCBC4010 KE15.3 (p) a) Corrugated iron  Can be fitted with different lengths  Good for waterproofing b) Diamond deck roofing  Great for high winds and water proofing c) Spandek roofing  Waterproofing even in long runs Q25. A man living in a bungalow notices that small splits and cracks are forming in his house’s timber roof trusses. He remembers that his area recently experienced heavy snowfall and calls a contractor for help in CPCCBC4010 KE17.0 (p), KE18.0 (p) CIVBCCPC40120 CPCCBC4010 – Apply structural principles to residential and commercial constructions WT PB 8Feb23 © ACADEMIQUE 2023

fixing the cracks. During their conversation, the contractor tells him that the trusses were not built to withstand heavy snow loads and that a team will come and fix the trusses. Given the information above, answer the following questions. a) What are the structural defects of the roof trusses?  Splits and cracks b) Identify one factor that contributed to the structural defects of the roof trusses that you identified.  Heavy snow c) Identify one possible implication of the structural defect that you identified.  Structure may collapse. d) Identify what structural principle was not properly applied.  Live load e) Briefly explain how the structural defects you identified were caused by failure to apply the relevant structural principle you identified.  The Structure was not designed to carry heavier loads. f) Describe the extent of work that needs to be done to rectify the structural defects you identified.  Replace with heavier trusses and add more support Q26. A 5-storey building was recently bought by a paper-making company. A few days after moving in, an employee on the fifth floor CPCCBC4010 KE17.0 (p), KE18.0 (p) CIVBCCPC40120 CPCCBC4010 – Apply structural principles to residential and commercial constructions WT PB 8Feb23 © ACADEMIQUE 2023

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complains that water is leaking into the building and that there are some stained ceilings on the fifth floor. The manager hires a structural engineer to inspect the roof of the building and the engineer finds that condensation may be forming inside their roof due to their roof being made of concrete slabs but having no insulation or vapour control layer incorporated in it. The structural engineer also points out that the plans for the roof design do not specify what material should be used during construction. Given the information above, answer the following questions. a) What are the structural defects of the roof?  The Condensation b) Identify one factor that contributed to the structural defects of the roof that you identified.  Poor installation c) Identify one possible implication of the structural defect that you identified.  Mold build up and vapor d) Identify what structural principle was not properly applied.  Lack of vapor barrier  Poor workmanship e) Briefly explain how the structural defects you identified were caused by failure to apply the relevant structural principle you identified.  having no insulation or vapour control f) Describe the extent of work that needs to be done to rectify the structure defects you identified.  Apply water proofing to prevent further damage Q27. The owners have noticed some external rising damp on the exterior brick wall of their home. Upon inspection, they found that weatherproofing was not applied to the walls. CPCCBC4010 KE17.0 (p), KE18.0 (p) CIVBCCPC40120 CPCCBC4010 – Apply structural principles to residential and commercial constructions WT PB 8Feb23 © ACADEMIQUE 2023

Given the information above, answer the following questions. a) What is the design defect of the house?  The exterior brick wall did not follow the water proofing requirement b) Describe the extent of work that needs to be done to rectify the design defect you identified.  Apply clear waterproofing to the exterior wall Assessor comments: CIVBCCPC40120 CPCCBC4010 – Apply structural principles to residential and commercial constructions WT PB 8Feb23 © ACADEMIQUE 2023

CPCCBC4010 WT PB 8Feb23

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