Architectural / Renovation
Renovation is more difficult than new construction,
metric or english.
If both walls are to receive drywall facing, we can use 92
studs and 16 GWB both sides, plus indicate an equal
The difficulty of metric renovation can be minimized
distance from each existing wall to the metal stud, to
through use of the following and other techniques.
create a total metric core of 11800. The equal distance
would be 13.5 mm equal on each side, making 121.5
Examples are simplifed to demonstrate the principles.
each side, times 2 equals 243, leaving 11800. The 13.5
could be shown only as Equal on drawings.
One Bad Rule
This technique can be utilized to minimize awkward
metric numbers. Any existing space dimension, no
In some facilities, we utilize soffit ceiling techniques to
matter how awkward, can be developed as a series of
take up the awkward difference around the edge, so we
clean, rounded metric numbers, combined with one
can utilize hard metric ceilings. In our example, 18
awkward metric number.
metric 600 mm ceiling tiles, plus a 100 mm border,
would give 11 m. An equal soffit space of 521.5 would
Ex, if two existing walls are located 12 043 mm apart on
work nicely as a border, and would equal our 12043
a renovation project, this could be laid out as:
1400 + 3600 + 4200 + 1200 + one bad, or 1643
The majority of dimensions involved with renovation or
This is ofcourse simplified, but it is a noble goal in
new construction involve new dimensions. Ex, no one is
renovation, and if the majority of situations utilize this
reconstructing a bay spacing in an existing building,
technique, the awkward numbers can be minimized.
since it already exists. The frequently utilized
dimensions in renovation consist of dimensions which
Off The Wall Technique
can be stated in rounded, hard metric dimensions to a
In addition, if the first four dimensions above are such
that the spaces can be laid out off one wall, the 1643 will
not be used, although it will probably be checked
Architectural / Roofing
initially to confirm overall accuracy.
Ex, 1400 + 3600 + 4200 + 1200 = 10400
Use m2 for areas, instead of the 2 previous units.
With this approach the layout work is all done in
State membrane thickness in mm only.
rounded metric units off one wall, and the 1643 is a
floating dimension. Layout is done to the maximum of
Lap widths should be even mm. (ex, 100, 150 mm)
10400 only, all with clean numbers.
Metric Core Technique
With the same example above, our space of 12043, we
can use the metric core technique.
If either wall is to have stud and drywall applied, we can
take up the slack to establish a hard metric core. If we
use 92 mm metal studs, 16 GWB, and move the stud 35
mm out from the existing wall, we establish a 143 mm
floating zone. A rounded, 11900 dimension is now
established as the metric core.