Surveying works:e&ore starting o& excavation the Surveyors wi"" %e set out the invert "eve" an$ "ocation.
Excavation works:+&ter the setting out o& %ox cu"vert invert "eve" an$ "ocation* the excavator wi"" start in excavation to the re7ueste$ "eve" with excavation wi$th o& invert s"a% 8 2.6 #eters as ta%"e %e"ow:)te
Locatio Dia #
Excavation
#
n 6686
wi$th # 92.'91
1
13.'' 6 118''
.2 29'.692
2
13.1' 6 138('
.' 29.692
3
11.6' 6 186'
.6 39.691
1'.36 6 1(822
.' 92.'91
'
13.'' ' 1(86
.' 292.'91
(
.6' 6 218/6
.' 9.692
/
14.'' 6
.6
!ep"ace#ent Soi":+&ter the en$ o& excavations an$ sur&ace preparing the se"ecte$ #ateria"s with 5! 36 wi"" %e provi$e$ to the %ox cu"vert "ocation with Du#p trucks an$ sprea$ing using excavator *gra$er , S#ooth $ru# ro""er in one "ayer thickness 266 ## a&ter insuring &ro# $ensity at 4'; o& MDD at
Lean 5oncrete:-
+&ter the en$ o& rep"ace#ent soi" the surveyor wi"" #ake sticks with "eve" o& %otto# o& invert s"a% in or$er to contro" the upper sur&ace o& "ean concrete. =ouring concrete > 166 ## thickness- wi"" $o %y using #anua" #ixer.
)nvert S"a%* +prons works * Wa""s* Deck s"a% an$ 0ea$ wa""s:+&ter the en$ o& "ean concrete works o& invert s"a% an$ +prons wi"" start xing the rein&orce#ent %ar &or invert s"a%* +prons an$ cut o& wa""s Drop wa""s as $rawing. ?hen wi"" start xing the &or# works Shuttering o& invert s"a%* +prons an$ cut o& wa""s. =ouring rein&orce#ent concrete &or invert s"a% +prons an$ 5ut o& wa""s a&ter Engineer approva" &or rein&orce#ent an$ shuttering using ?rans- #ixer or Manua" #ixer 6./' #3 or 1.6 #3 which avai"a%"e on site* water tanker an$ Excavators an$ curing works continues &or / $ays &ro# pu"" out the shuttering. +&ter one $ay &ro# casting the rein&orce#ent o& invert s"a%* +prons , Drop wa""s wi"" start to co#p"ete xing
o& wa""s rein&orce#ent %ars as $rawing an$ shuttering works. =ouring rein&orce#ent concrete &or wa""s an$ wing wa""s a&ter Engineer approva" &or rein&orce#ent an$ shuttering using ?rans -#ixer or Manua" #ixer 6./' #3 or 1.6 #3 which avai"a%"e on site* water tanker an$ Excavators an$ curing works continues &or / $ays &ro# pu"" out the shuttering. +&ter that* wi"" start shuttering an$ xing the rein&orce#ent %ar &or Deck s"a% an$ 0ea$wa""s as $rawing =ouring rein&orce#ent concrete &or Deck s"a% an$ 0ea$ wa""s a&ter Engineer approva" &or rein&orce#ent an$ shuttering using ?rans -#ixer or Manua" #ixer 6./' #3 or 1.6 #3 which avai"a%"e on site* water tanker an$ Excavators an$ curing works continues &or 1' $ays &ro# pu"" out the shuttering.
ack""ing works:+&ter en$ o& curing perio$ &or Deck s"a% an$ 0ea$wa""s wi"" start %ack""ing works using natura" san$ in "ayers 266 ## thickness co#pacte$ sprea$ with excavator an$ water tanker 0y$rau"ic co#paction.
