COP v3.0:revision-history; 2020-june

Code of Practice v3.0 Online

The NZ Metal Roof and Wall Cladding Code of Practice is a comprehensive design & installation guide, and a recognised related document for Acceptable Solution E2/AS1 of the NZ Building Code.

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2020 – June

19.12 2020 – June

The following updates to the NZ Metal Roof and Wall Cladding Code Practice (COP), are effective 1 June 2020.

New clauses:

In this update, we included new clauses concerning 17.2 MRM Fastener Performance Requirements and Testing and 17.3 MRM Soft Edge Standard.
We updated 3.9 Maximum Span and Fastener Requirements to include 3.12 Aluminium Cladding Wind Load Span Graphs.
We added a new table 5.3.3 Minimum Freeboard Values to 5.3 Roof Drainage Design and implemented interface refinements to 5.4.7 Gutter Capacity Calculator.

The rest of this update consists of minor improvements, such as tidying up drawings and edits for clarity and grammar.

19.12A Revision Detail - 2020 - June

Category	Clause Number (at time of update)	Clause (As of current publication)	Details
2 - Editing and rearrangement	1	1 Introduction	Update Revisions Message
2 - Editing and rearrangement	3.16.4	3.9.4 Fastener Patterns	Fastener pattern illustrations updated for clarity - no change to intent.
2 - Editing and rearrangement	3.16.5	3.10 Steel Cladding Wind Load Span Graphs	Clause renamed.
2 - Editing and rearrangement	3.16.5.1	3.10.1 Corrugated Steel – 0.40	Clause renamed and Fastener pattern illustrations updated for clarity - no change to intent.
2 - Editing and rearrangement	3.16.5.3	3.10.2 Corrugated Steel – 0.55	Clause renamed and Fastener pattern illustrations updated for clarity - no change to intent.
2 - Editing and rearrangement	3.16.5.2	3.10.3 Trapezoidal Five Rib Steel – 0.40	Clause renamed and Fastener pattern illustrations updated for clarity - no change to intent.
2 - Editing and rearrangement	3.16.5.4	3.10.4 Trapezoidal Five Rib Steel – 0.55	Clause renamed and Fastener pattern illustrations updated for clarity - no change to intent.
2 - Editing and rearrangement	3.16.5.5	3.10.5 Trapezoidal Six Rib Steel – 0.40	Clause renamed and Fastener pattern illustrations updated for clarity - no change to intent.
2 - Editing and rearrangement	3.16.5.6	3.10.6 Trapezoidal Six Rib Steel – 0.55	Clause renamed and Fastener pattern illustrations updated for clarity - no change to intent.
4 - Clause Inserted		3.12 Aluminium Cladding Wind Load Span Graphs	New clause.
4 - Clause Inserted		3.12.1 Corrugated Aluminium – 0.70	New Clause for Aluminium Cladding Wind Load Span Graphs.
4 - Clause Inserted		3.12.2 Corrugated Aluminium – 0.90	New Clause for Aluminium Cladding Wind Load Span Graphs.
4 - Clause Inserted		3.12.3 Trapezoidal Five Rib Aluminium – 0.70	New Clause for Aluminium Cladding Wind Load Span Graphs.
4 - Clause Inserted		3.12.4 Trapezoidal Five Rib Aluminium – 0.90	New Clause for Aluminium Cladding Wind Load Span Graphs.
3 - Substantial change to recommendation	5.6.3	5.3.2 Rainfall Intensity	Clause had been completely revised, with updated Rainfall Intensity Maps at the end of the main Clause, Roof Drainage.
1 - Minor Errata	5.6.3.1	5.3.2.2 Duration	Replaced comparison chart with a simplified one.
2 - Editing and rearrangement	8.3	8.3 Flashing Cover	Added minimum flashing cover values for change of pitch junctions.
4 - Clause Inserted		17 Testing and MRM Standards	New clause.
2 - Editing and rearrangement	17	17.1 Metal Cladding Testing	Clause renamed.
1 - Minor Errata	17.5.1	17.1.5.1 Allowance for Variation	Fixed "overall" to "over all"
4 - Clause Inserted		17.2 MRM Fastener Performance Requirements and Testing	New clause.
4 - Clause Inserted		17.2.1 Requirements for Fastener Testing	New clause.
4 - Clause Inserted		17.2.2 Test Panel Requirements	New Clause.
4 - Clause Inserted		17.2.2.1 Test Location	New Clause.
4 - Clause Inserted		17.2.2.2 Site Orientation	New Clause.
4 - Clause Inserted		17.2.2.3 Preparation of Test Panel	New Clause.
4 - Clause Inserted		17.2.3 Fastener Performance Testing	New Clause.
4 - Clause Inserted		17.2.3.1 Site Testing	New clause.
4 - Clause Inserted		17.2.3.2 Field Performance Validation	New clause.
4 - Clause Inserted		17.2.3.3 Accelerated Testing	New clause.
4 - Clause Inserted		17.2.3.4 Fastener Shanks	New clause.
4 - Clause Inserted		17.2.3.5 Sealing Washer Conductivity	New clause.
4 - Clause Inserted		17.2.4 Appearance	New clause.
4 - Clause Inserted		17.2.5 Weatherproofing	New Clause.
4 - Clause Inserted		17.2.6 Fastener Performance Test Report	New clause.
4 - Clause Inserted		17.3 MRM Soft Edge Standard	New clause.
4 - Clause Inserted		17.3.1 Soft Edge Product Techincal Statement Requirements	New clause.
4 - Clause Inserted		19.12 2020 – June	New clause. Revision detail.
0 - Clause Removed	5.5	Gutters	The clause had been removed. Gutters are now discussed in more detail in a separate clause for each type, under the main clause Types of Gutter.