uit de waterlijn

19:20 Sep 16, 2013 

... because I was still a little puzzled, I asked Graham Oxtoby (the author of the GWIT), and here is what he had to say on the matter:

'(...) boven de waterlijn would obviously refer to the maximum height of the waterline or water level in a vertical direction. Similarly, onder de waterlijn would relate to the opposite. In my view, “uit de waterlijn” here refers to “away from the waterline” or not in the vicinity of or within the waterline (i.e. the direction in which the water flows in the gutters as viewed from above), which would run around the roof (on a horizontally plane). That would make a lot of sense to me. Otherwise, I’m sure the Dutch would have stated “boven de waterlijn” for above the waterline or above water level.

In this case, if I were the translator, I would check this with the author of the text first before drawing any final conclusions. Unfortunately, there’s very little to go on, e.g. what does this actually relate to and has the Dutch author purposely used the word “uit” instead of “boven”?'

11:16 Sep 2, 2013 

The level of standing water on a flat roof can indeed change, depending on how much it has rained, evaporation, etc.
I think the best way of translating this might therefore actually be 'high-water level'.

See, e.g.:

'(3) The terminal of a vent pipe shall be located

(a) at least 900 mm above or 3.5 m in any other direction from air inlet, openable window or door,
(b) at least 150 mm above the roof of the building where the vent is installed and, where storm water is intended to pond on the roof, at least 150 mm above the high water level, and
(c) at least 2 000 mm above the roof of the building that the vent is installed in, where the roof is intended for human occupancy.'
(http://www.3dplumbing.net/ontplumbing/vent_termination.htm )

10:15 Sep 2, 2013 

that 'uit de waterlijn' seems to be used also for measurements from where there is water. See Google: 1m uit de waterlijn (meaning 1m away from). This is also used for roofs on buildings. I can't see why you would put electric cables in a place where there is likely to be water anyway.
The level of standing water on a flat roof can be different depending on how much it has rained, can't it?
Is there a river or pond in the vicinity of this building at all?

08:33 Sep 2, 2013 

My guess is that this is about water standing on a roof, and the 'dakdoorvoeren' and 'liggers' should be above or out of the waterline.

I think waterline might be preferable, rather than water level, because we're on a roof and not at ground level.

03:23 Sep 2, 2013 

Had in de bron 'boven de waterlijn' gestaan, dan lijkt me 'above the waterline' totaal toepasselijk. Naar er staat 'buiten'. Indien het gaat o, zoiets als een stromingsgebied, dan lijkt me 'outside' meer op z'n plaats. Is de bron ne-NE of ne-BE?

23:41 Sep 1, 2013 

?