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VERVANGEN RIOLEN STRAATWEG
informatiebijeenkomst, 8 september 2015, Lommerrijk
Bewonersinitiatief
Rotterdam
Community
InHillegersberg
www.inhillegersberg.nl
Hillegersberg, een inzijgingsgebied (boven polder) omgeven door
kwelgebied (droogmakerijen)
Hillegersberg
zuid
noord
Schiebroek
110 Morgen
Molenlaankwartier
Terbregge
deelgebied Straatweg
deelgebied donk
deelgebied zeeklei
Grondwaterdekking funderingshout: huidig en vooroorlogs
-2,65
-2,75
- 2,85
peil plassen hoogte NAP (m) huidige F3O - norm
grondwaterdekking
1917 - 1944
1944 - 1955
huidig
voldoende
klein
onvoldoende
vooroorlogse norm
minimale diepte
funderingshout
5 cm
15 cm
1960
Korteweg
1986
1942
Molenwerf
Bergse Plaslaan
Plaszicht
1987
Wilgenoord
1975
CNA Looslaan
1991
1969
Plasoord
Berglustlaan
2010
1960
1960
1969
grondwater-drainerend
riool (wordt vervangen)
waterdicht riool, wordt
niet vervangen
waterdicht riool, wordt
wel vervangen
drain
bestaande infiltratie-
drainageleiding
nieuwe infiltratie-
drainageleiding
jaar van aanleg riool
Huidig rioleringssyteem Straatweg en omgeving
2006
Huidige grondwaterstand langs riolen Straatweg(NAP, m)
-3,2
-3,5
-3,5
-3,3
-4,0
-3,5
-3,8
-3,9
-3,9
-3,9
-3,8
-4,1
-4,0
-3,5
-4,0
NAP -2,85 m
-3,3
-4,0
-4,3 binnenkant onderkant rioolbuis
peilbuis boomeffectonderzoek
peilbuis regulier meetnet
-4,3
-3.2
-3
-2.8
-2.6
1/1/1982 1/1/1987 1/1/1992 1/1/1997
peil Bergse plas
huidig maaiveld NAP -2,1 m
uitgiftepeil NAP – 1,8 mvervanging riool
Verloop grondwaterstand Plaszicht (geen drain)
NAP, m
vooroorlogse norm
funderingshout
Plasoord, traditionele en huidige bestrating
traditioneel: redelijk regenwater
passerend
Rotterdam stijl:
beperkt regenwater
passerend
2007-2009 is traditionele bestrating
in zijstraten Straatweg vervangen
door bestrating Rotterdam stijl
in 2009 in Plasoord plotselinge daling
grondwaterstand 10 cm
-3.6
-3.4
-3.2
-3
-2.8
-2.6
-2.4
1/1/1994 1/1/1999 1/1/2004 1/1/2009 1/1/2014
Grondwaterstand Plasoord 6
vervanging bestrating
zijstraten Straatweg
Voorstel commissie grondwater
1) zijstraten: toepassen waterpasserende bestrating
en afkoppelen regenwaterafvoer panden
2) Straatweg: infiltratie-drainageleiding met
(druk)niveau van NAP -2,70 m, dit is 15 tot 20 cm
boven vooroorlogse norm bovenkant
funderingshout
elke centimeter verhoging van de grondwaterstand telt

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150908 vervanging riolering_straatweg_def

Editor's Notes

  1. Mail 2 september 2015: Beste Siep,   Als er iets vreemds gebeurd kan zijn in de buurt van de peilbuis bij Plasoord 6 : Vorig jaar is er maanden water weggepompt om de funderingen van Plasoord 1,3,5 en 7 te herstellen. Er zijn nieuwe koppen geplaatst en onder de huizen 3,5 en 7 is tegelijkertijd een manshoge kelder gekomen. Dat kan natuurlijk vreemde grondwaterstanden opleveren ? Gr. Harm