Euroview 70 Technical Manual - West Coast Vinyl Windows

Chapter
4
20
Final measurements and determination of the real building situation
chosen joint
width >10 mm
minimum
1584 -4 - 4 = = 1580
nominal dimension
1584 +4 + 4 = = 1588
4.3 Squareness of the window openings
With telescopic scale and level the squareness of the reveal
can be controlled. Another possibility for the control of the
squareness is the diagonal dimension.
a'
b b'
c'
2 2 2 2
c = a + b = c' = a' + b'
a
c
Fig. 4: Fit – window frames
For this purpose, both diagonals of the opening are measured
and compared with each other. If they are different, there is
no right angle (≠ 90°).
Fig. 3: Tolerance terms –
window opening
(example for
nominal dimension
1620 mm)
The cited terms are
defined in
DIN 18202.
If the minimum joint width is not completely protected,
doubts have to be explained in writing.
Fig. 5: Diagonal dimension
window Window opening is is rectangular Window opening is not rectangular
window opening is not rectangular
RAL-GÜTEGEMEINSCHAFT KUNSTSTOFF-FENSTERSYSTEME
b
c'
a
a'
c = a + b = c' = a' + b'
2 2 2 2
The angle tolerances according to chart 2 apply to the squareness of window and door openings.
Reference Allowed diagonal dimensional tolerances (mm), nominal dimensions (m)
up to 1 m 1 m to 3 m more than 3 m to 6 m
Vertical, horizontal and slanting surfaces 6 mm 8 mm 12 mm
Chart 2: Angle tolerances according to DIN 18202
maximum
1620 + 12 = 1632
nominal dimension 1620
minimum
1620 - 12 = 1608
maximum
1608 - -2x10 2x10 = 1588
Window frames:
limit deviation ± 4 mm
dimensional tolerance 8 mm
Window opening:
limit deviation ± 12 mm
dimensional tolerance 24 mm
chosen joint
width >10 mm
c
b'