Area C - Detailed Design Flashcards
What is RBW?
Restricted building work relates to fire safety systems, weather tightness and structure for a residential dwelling.
Limited by apartments of up to 10m high with no commercial facilities.
Need to submit a certificate of design work with BC application. Have to be LBP or registered architect. Has to be a natural person signing, and not company.
What is the structure of the legislation for building works in NZ?
The building act 2004 >
The building regulations act >
Schedule one of the regs act is the building code (performance based code).
Code sets out the objectives and functional requirements, and shows means of performance with acceptable solutions and verification methods.
How might you demonstrate compliance?
Acceptable solutions and verification methods
Comparison with AS/1 or VM - show principles of performance
Comparison with test results, product literature, appraisals….
In service history in similar situation
Product cert - code mark
Comparison with MBIE determination
Comparison with previously consented alt solution
Expert opinion (producer statement)
Calculation or test methods
Combination of above
What makes up the building code?
3 general clauses; classified uses, interpretation and importance levels
38 technical clauses
Within each tech clause; obj chive, functional requirement, performance criteria that must be achieved.
What are producer statements?
Only a professional opinion - not a warranty or guarantee
PS1 - design (consultant)
PS2 - peer review (consultant)
PS3 - construction (contractor)
PS4 - review (consultant)
Building amendment act 2013 introduced two main new parameters. What are they?
Construction work over $30k requires a written construction contract.
New 12 months defects notification/liability period. Precedence with SCC?
What are the specification sections?
P&G and trade sections.
Trade; General Products Execution Selections (removed at SPA)
What are warranties and guarantees?
Warranty - an undertaking by one party to another. I.e. normally provided by a subcontractor or supplier. They warrant the performance of the relevant part of the works, and include an undertaking to remedy. (3910 - schedule 13 Form of Warranty)
Guarantee - is an undertaking by a third party to act in the event the second party does not fulfil their obligations under the guarantee.
What is the purpose of the construction contracts act?
To facilitate timely payments
Provide for speedy disputes resolution
Provide remedies for the recovery of payments
What are the four D’s and how do they relate?
Deflection - deflect water away, first line of defence - cladding, eaves, flashings
Drainage - ventilated and drained cavity, if any water gets in make sure it can get out
Drying - where water can get in, allow for drying (vented cavity)
Durability - ensure materials are durable for their uses. I.e treatment levels of timber, fixings materials
What documentation is required for a building consent?
Application form Drawings and spec from each consultant Certificate of design work for RBW Certificate of title Supporting information not appended to the spec.
What is required for CCC?
This will be defined in the building consent issued by council. Must be on form 6 from the building regulations 2004.
Common things are; test certificates for gas fitting and electrical, PS3 and PS4’s, details of the people who undertook the work, as built records, records of building work for RBW.
What is the role of the BCA/ TA under the building Act?
A BCA is charged with a duty to assess and issue building consents but not waivers or modifications, assess building work for which it has granted a consent, issue CCC, issue compliance schedules.
TA performs the function of a BCA as above if the TA is also the BCA. They also issue PIM’s, grant exemptions, issue certificates of acceptance, administers annual bWOF.
Which projects are exempt from needing a building consent?
Work outlined in part 1 of schedule 1 of the Building Act
Less than 10m2 in area - stand alone, such as a shed
What is a risk matrix?
Risk assessment of the proposed design allows the risks of various features to be aggregated resulting in a risk score for the design. The risk profile determines the cladding systems deemed suitable for use - more risk equals more limited cladding. The risk matrix looks at; Wind zone Number of storeys Roof/wall intersection Eaves width Envelope complexity Deck design
