5. Perenc Bangunan (OK).doc

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SID Pengendalian Sedimen Sungai TungoiKabupaten Bolaang Mongondow

EXCECUTIVE SUMMARY

CHAPTER-5

BUILDING PLAN

BAB 5.PERENCANAAN BANGUNAN

5.1. SEDIMENT TRAP

5.1.1. Check Dam

Plans check dam placed at two locations Tungoi its tributaries upstream, where the two

creeks flow is a source of sediment transport into Tungoi River. What is planned is at p.140

!orth "ide Tungoi #reeks$ and P.1%1 & Tungoi #reeks "outh "ide$. The building check

dams are planned with couples where the calculation of dimensional stone and hidrolisn'a

refers "( "!) * T * 1+ * 1++1*0% Technical Planning Procedures Retaining "ediment weirs.

ere is a check dam location planning calculations 1 p.140$, which consists of planning and

"ub -ain am dam.

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EXCECUTIVE SUMMARY

esign check dam location / P.1%1&$ accounted for at the planning stage check dam

location 1. The results of the calculations resume the calculation is as follows

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EXCECUTIVE SUMMARY

5.2. L!!D C!NTR!L

5.2.1. Em"a#kme#$ a#% Pa&a'e$

)n the case of river flooding ngkag, urugan soil embankment is still possible to build

because there are still land on either side of the e2isting riverbank. &s for the case of a flood

in the river Tungoi impossible to build because of the condition of the soil embankment

bantarann'a alread' coincide with the settlements, it is planned for the dike being shaped

parapet walls made of stone masonr' times.

Planned flood control embankment on river segments based on the results of running

ecras 32isting #ondition$ and meggenangi houses and padd' fields. esign plans for river

levee elevation and Tungoi ngkag further shown in the following table

Ta"(e 5.1 De)*+# P(a#) E(e,a$*# !#+ka+ La,ee

Ta"(e 5.2 De)*+# P(a#) E(e,a$*# T/#+* La,ee

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EXCECUTIVE SUMMARY

*+/&e 5.1 R*,e& Le,ee P(a##*#+ !#+ka+ P. 10

*+/&e 5.2 P(a##*#+ T/#+* R*,e& Le,ee) Pa&a'e$ P.A

5.2.2. R*,e& N&ma(*3a$*#

!ormaliation condition of the river stream is created with a certain width and depth to

increase the capacit' to be able to drain the flood water so there is no overflow.!ormaliation river watercourses Tungoi planned under 4 m in width, the width of the

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EXCECUTIVE SUMMARY

variation, the e2cavation of the river 0 s 5 d 0.4 m with a bottom elevation corresponding

slope planned.

*+/&e 5.4 S('e T/#+*

*+/&e 5. S('e De)*+# T/#+* P.4-P.

*+/&e 5.5 T/#+* N&ma(*3a$*# 6P.507

5.2.4. Ga"*#

6abion mattress design is planned with the sie 0.7 2 1 m with a span length of /.0 m. That

are not easil' washed awa' the mat bro8ong reinforced with piles dolken 5 timber. Placementposition ad8ustable mattress gabion slope cliff following the e2isting stacking shapes as

shown below.

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EXCECUTIVE SUMMARY

*+/&e 5.8 Ga"*# ! !#+ka+ 6P.10A7

*+/&e 5.0 Ga"*# ! T/#+* 6P.997

5.2.. R*,e& M%e(*#+ De)*+# C#%*$*#)

-odeling the design conditions is done using the design flood discharge data on 10*'ear

return period 910th$, so that the plan can be evaluated results on river flood control

structures that were reviewed have been effective or not.

:rom the modeling results for the discharge 910th at design conditions are obtained that

plan design with mounting flood embankment on the river and parafet ngkag Tungoi the

river is enough to effectivel' reduce flood overflow. "pecial design flood embankment on the

river ngkag is still sufficient to reduce the flood discharge at the time /7th anniversar'

9/7th$. To bend of the river and river banks ngkag and retrofitting installed Tungoi flow b'

installing gabions.

Ta"(e 5.4 HecRa) M%e((*#+ Re)/($ De)*+# C#%*$*# ! !#+ka+ :*$h ;1$h

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EXCECUTIVE SUMMARY

Ta"(e 5. HecRa) M%e((*#+ Re)/($ De)*+# C#%*$*# ! T/#+* :*$h ;1$h


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EXCECUTIVE SUMMARY

5.2.5. Lca( Sc/&*#+

To protect the base of the cliff to be secure against scour, the scour depth needs to be

happening. egan scour depths calculated using the formula =ace' with the calculation as

follows

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EXCECUTIVE SUMMARY

?ased on empirical calculations above, the protection plan on the river bluff with gabions and

ngkag Tungoi need to be deepened from 1 to 1./ meters below the riverbed.

5.2.8. G&*#

)n the segment of the river that frasen'a shaped curve or turn, then grinding the river ma'

occur in outer corner. River bend area will cause problems with the stabilit' of the outer side

of the river bank facing the possibilit' of blow energ' of water large enough. )f left

unchecked, it will further erode the river flow to the outer corner and could harm e2isting

infrastructure. )t happened outside of river bends gkag especiall' P.1


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EXCECUTIVE SUMMARY

*+/&e 5. G&*# ! !#+ka+ R*,e&)

Perhitungan krib

C#$e#$)

BAB 5. PERENCANAAN BANGUNAN

.......................................................................................

5-1

5.1. SEDIMENT TRAP

.............................................................................................................5-1

5.1.1. Check Dam

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EXCECUTIVE SUMMARY

...................................................................................................5-1

5.2. FLOOD CONTROL.............................................................................................................5-3

5.2.1. Embankment and Paa!et...................................................................................................5-3

5.2.2. R"#e N$ma%"&at"$n...................................................................................................5-'

5.2.3. (ab"$n...................................................................................................5-5

5.2.'. R"#e M$de%"n) De*")n C$nd"t"$n*

...................................................................................................5-+

5.2.5. L$ca% Sc$,"n)...................................................................................................5-

5.2.+. ($"n...................................................................................................5-

F"),e 5.1 R"#e Le#ee P%ann"n) On)ka) P. 1/.....................................................................................................................5-'

F"),e 5.2 P%ann"n) T,n)$" R"#e Le#ee* Paa!et P.''A.....................................................................................................................5-'

F"),e 5.3 S%$!e $0 T,n)$".....................................................................................................................5-5

F"),e 5.' S%$!e De*")n T,n)$" P.3-P......................................................................................................................5-5

F"),e 5.5 T,n)$" N$ma%"&at"$n P.5.....................................................................................................................5-5

F"),e 5.+ (ab"$n O0 On)ka) P.1/A.....................................................................................................................5-+

F"),e 5. (ab"$n O0 T,n)$" P......................................................................................................................5-+

F"),e 5. ($"n O0 On)ka) R"#e*.....................................................................................................................5-1/

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EXCECUTIVE SUMMARY

Tab%e 5.1 De*")n P%an* E%e#at"$n $0 On)ka) La#ee.....................................................................................................................5-3

Tab%e 5.2 De*")n P%an* E%e#at"$n $0 T,n)$" La#ee.....................................................................................................................5-'

Tab%e 5.3 4ecRa* M$de%%"n) Re*,%t De*")n C$nd"t"$n O0 On)ka) "th61/th.....................................................................................................................5-

Tab%e 5.' 4ecRa* M$de%%"n) Re*,%t De*")n C$nd"t"$n O0 T,n)$" "th 61/th.....................................................................................................................5-

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5. Perenc Bangunan (OK).doc