Frequently asked questions
What is the difference between a structural engineer and an architect?
The architect is responsible for the design intent, the spatial arrangement, the building envelope and compliance with the wider Building Code and planning requirements. The structural engineer is responsible for making that design stand up: sizing and detailing the structure for gravity, wind and earthquake loads, and demonstrating compliance with Building Code clause B1. On most projects they work together from concept, because structural constraints are cheapest to resolve before the plans are fixed.
What is a PS1 for structural design?
A producer statement PS1 is a statement by the design engineer to the building consent authority that the structural design complies with the Building Code. It is normally supported by calculations and drawings, issued by a Chartered Professional Engineer working within their competence, and backed by professional indemnity insurance. Councils accept producer statements at their discretion and may still review the design.
Do I need a structural engineer to remove a wall?
If the wall is load bearing or provides bracing, yes. Many internal walls in New Zealand houses contribute bracing capacity even when they are not carrying floor or roof load, and removing them can reduce the building resistance to wind and earthquake below the required level. An engineer can confirm the role of the wall and design the beam, posts, foundations and replacement bracing if it is to be removed, which is usually also a building consent matter.