Hillhouse Engineering Ltd

20/05/2026

Here’s a more natural and engaging English version for Facebook:

Many homeowners think:

“If the timber is bigger, it must be safer… right?”

But under NZS 3604, structural timber sizing follows engineering logic — bigger does not always mean better.

The timber size mainly depends on:
• Wind Zone
• Loaded Dimension
• Wall Height

If these conditions are not properly understood, making the timber larger “just to be safe” — or reducing sizes without calculation — may already fall outside the scope of NZS 3604.

Common results:
• Wasted material and higher costs
• Council may not accept the design

In structural engineering, the correct size is far more important than simply “looking strong.”

25/03/2026

20/03/2026

The most common homeowner mistake: “This wall doesn’t look heavily loaded.”
Many homeowners rely on intuition and say:
“It doesn’t look like this wall is carrying much weight.”
But under NZS 3604,
The load a wall carries
is not judged by appearance — it is calculated


engineer

13/03/2026

The most common homeowner mistake: “If the neighbour did it this way, I can too.”

07/02/2026

The most common homeowner mistake: “As long as there are walls, that’s enough.”

But in New Zealand, what truly determines whether a house
stays stable or deforms during earthquakes and strong winds
is not the walls themselves — it is the bracing system.

The role of bracing is to: prevent the building from deforming under horizontal forces.

Common issues include:
• Insufficient bracing
• Uneven or poorly distributed bracing
• Bracing removed during layout changes

The result is often:
• Council requiring additional calculations, or
• Noticeable movement of the house during strong winds after completion.

25/01/2026

Wall Framing in New Zealand -

The most common homeowner mistake: “Can this wall be removed?”

During alternations, the first question many homeowners ask is:
“Is this a load-bearing wall?”

However, under NZS 3604,
The role of a wall is not limited to carrying vertical loads.

We will continue to share insights and practical knowledge related to engineering in New Zealand — don’t forget to like and follow for more.

25/01/2026

The most common homeowner mistake: “Can this wall be removed?”

During alternations, the first question many homeowners ask is:
“Is this a load-bearing wall?”

However, under NZS 3604,
The role of a wall is not limited to carrying vertical loads.

We will continue to share insights and practical knowledge related to engineering in New Zealand — don’t forget to like and follow for more.