EA C

Question 1

weather tightness 4 Ds

Answer 1

deflection, drainage, drying, durability,

Question 2

Deflection

Answer 2

water impacting on the building exterior deflects off
the face of the cladding. Water is deflected away from critical junctions in the cladding by specific deflection devices on the exterior of the building (such as a window head flashing). The style of the building can also aid deflection of rain away from building walls

Macro - eaves lower risk of weathertightness failure
Micro - window head flashings ,inter-storey cladding flashings. Provide protection by deflecting water at a specific junction in the cladding

Question 3

drainage

Answer 3

any water that penetrates the exterior cladding must be
drained back out from within the cladding assembly, down drainage paths that are specifically designed into the wall assembly. Water must be able to drain off the face of the building.

Assisted by gravity. drainage path that allow water that penetrated the exterior cladding to drain down and out the wall assembly, ideally down the back of the cladding

direct-fixed cladding - back of cladding is in contact with the wall underlay. Wall assembly needs to be installed to ensure that water has the opportunity to allow limited drainage down the back of the cladding and face of the underlay.

Water may brudge the cavity in drained cavity cladding
Wall underlay needs to be installed to facilitate gravity drainage

Question 4

Drying

Answer 4

not all water will drain within a wall assembly – some will be
absorbed by building components. Air needs to be able to circulate within wall assemblies to dry water absorbed by components. Wind and sun will dry water off the cladding exterior

Question 5

Durability

Answer 5

all components of a cladding and wall assembly need to be
appropriately durable for the conditions and New Zealand Building Code durability requirements

Question 6

Anti ponding board

Answer 6

Anti-ponding boards should be installed at the eaves line to prevent sarking/ underlay from sagging, and to ensure that water collected will discharge into the gutter.

Question 7

Purpose of specification.
General sections and trade.
General, Product Execution, Selections

Question 8

Process of Building Consent Amendment

Answer 8

Client request underground to above ground tank.
Amendment, application, fee, obtained updated consultants documents, updated revisions and drawing register. Submit to Council, obtained approval.
Buckland School. Fire wall retracted as wall was perpendicular to boundary.
Issued CI with consultants CANs, noting subject to BC amendment

Question 9

Documentation structure - LACS system


Answer 9

Location, Assembly, Components and Schedules