Some of the most significant changes to the Building Code Clause H1 are for solid masonry construction and the level of insulation required when using the schedule method. We look at how you can meet the new requirements.
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If mortar debris that falls to the bottom of blockwork cavities is not removed before filling, the bond between the grout, blocks, reinforcing bars and cavity base is reduced.
An area of potential concern for all cladding systems is what happens along the bottom of walls. Plaster on polystyrene block is one cladding that can end up below ground.
Screw-fixed ties for veneer cladding used in housing construction since 1996 performed to expectations in the Canterbury earthquakes, according to a recent study.
Research into retrofitting unreinforced masonry buildings has found that fibre-reinforced polymer systems can increase their strength and toughness, making them less susceptible to earthquake damage.
Correctly flashing openings in masonry veneer is the first step to ensuring weathertightness.
Bricklayers usually dry-bed brick veneer ties but changes in the 1990s required ties to be encapsulated. BRANZ tested dry-bedded ties to see how well they meet current performance requirements.
An infill panel is often used with masonry veneer cladding above a window or door opening. This avoids the need to support the weight of the masonry veneer but creates a weathertightness issue.
Since 1975 the masonry trade has had a registration scheme setting standards of achievement in structural masonry. This scheme will provide the foundation for setting the competencies for licensed building practitioners in brick and blocklaying.
Concrete on its own is not a waterproof material in the sense required for a habitable space. To achieve such functionality, two procedures need to be followed, as outlined here.