Page 99 - Build 165

and then the carpenter starting work after the slab is formed. This is an example of the move to greater levels of specialisation to help drive e ciency into the building process. However, it is important that clear communication is not lost in this process.
To be clear and to avoid doubt, always work to the consented set of drawings. If there are di erences within the working draw- ings, these should be raised and resolved with the designer and project lead and approved (where required) by the client and the building consent authority before work progresses.
Common problems
Common problems to watch out for include: ● The foundation layout plan is not consistent with the wall framing location or other
aspects of the consented drawings.
● The layout provided by the frame manu- facturer does not align with foundation
design. This often leads to frames over-
hanging or falling short of the slab.
● The nished foundation does not meet the dimensional tolerances required by NZS 3604:2011. This means the slab and wall framing will probably not line up with each other. (Refer to section 1.3 of the handbook
or section 2.2 of NZS 3604:2011.)
● Complex, angular, stepped or irregular foundation layouts, where set-out is more di cult and problems are more common. ● Tight or infill sites, which often have additional requirements with boundary clearances, building adjacent to easements and the like, meaning that accurate set-out
is even more important.
Quiz
1. What is the maximum diameter hole you can drill in a 90 mm stud?
a. 50 mm.
b. Any size providing it is not a trimmer stud.
c. 25 mm.
2. What size hole can be drilled in a 140 mm
stud?
a. 38 mm.
b. It depends on the grade of the timber. c. 50 mm.
d. It is up to the plumber.
3. Do the consented plans take precedence over other drawings when establishing a building layout?
a. Yes.
b. No.
4. Where can tolerances for timber framing
be found?
a. In the 2018 Builders’ Omnibus.
b. In either section 1.3 of SNZ HB 3604:
2011 or section 2.2 of NZS3604:2011. c. In Schedule 1 of the Building Act.
Build 165 — April/May 2018 — 97
Answers:1.c 2.a 3.a4.b