SlideShare a Scribd company logo
1 of 11
IRIGASI & DRAINASE 
PERTEMUAN 01 
ESD-NPB-SDR-ARU
KONTRAK BELAJAR 
KETENTUAN KULIAH/PRAKTIKUM 
KETERLAMBATAN KULIAH MAX 15 MENIT, 
LEBIH DARI ITU MAHASISWA DILARANG 
MASUK KELAS 
PRAKTIKUM HADIR TEPAT WAKTU 
KEHADIRAN KULIAH MINIMAL 80 %, 
KEHADIRAN PRAKTIKUM 100% 
TIDAK RIBUT/TIDAK MENGERJAKAN TUGAS 
LAIN SELAMA MENGIKUTI 
KULIAH/PRAKTIUM MK INI
KOMPONEN PENILAIAN 
Makalah/Presentasi .................. 10 % 
Tugas PR .................. 10 % 
UTS .................. 25 % 
UAS .................. 25 % 
Praktikum .................. 30 % 
Total ..................100 % 
Huruf Mutu Angka Mutu Rentang Nilai 
A 4 ≥ 80 
B 3 68 - 79 
C 2 56 - 67 
D 1 45 - 55 
E 0 ≤ 44
PERKULIAHAN (01) 
1. Kontrak Pembelajaran, Brain Storming 
2. Pendahuluan Irigasi dan Drainase 
3. Kelembagaan Pengelolaan Air dalam Irigasi 
4. Hubungan air, tanah dan tanaman 
5. Hubungan air, tanah dan tanaman 
6. Model-Model Perhitungan Kebutuhan Air Tanaman 
7. Model-Model Perhitungan Kebutuhan Air Tanaman 
8. UTS
PERKULIAHAN (02) 
9. Komponen Irigasi Dalam System Hidroponik 
10. Metode Irigasi Permukaan (surface irrigation) 
11. Metode Irigasi Permukaan (surface irrigation) 
12. Metode Irigasi Tetes (drip irrigation) 
13. Metode Irigasi Curah (sprinkler irrigation) 
14. Pengertian, Prinsip dan kriteria drainase permukaan 
15. Pengertian, Prinsip dan kriteria drainase bawah 
permukaan 
16. UAS
Pustaka : 
Allen. Richard G. 1998. Crop Evapotranspiration – Guidelines for 
Computing Crop Water Requirement. FAO Irrigation and Drainage 
Paper 56. Utah State University. Logan.Utah. USA 
ASAE. 1989a. Field evaluation of micro irrigation systems. 
EP405.1. ASAE Standards. Amer. Soc. Ag. Eng., St. Joseph, MI. 
ASAE. 1989b. Design and installation of micro irrigation systems. 
EP409. ASAE Standards. Amer. Soc. Ag. Eng., St. Joseph, MI. 
Bafdal, Nurpilihan, Dwiratna NP, Sophia, Suryadi, Edy. 2012. Buku 
Ajar Irigasi dan Drainase. Jurusan Teknik dan Manajemen Industri 
Pertanian. UNPAD. Bandung 
Hoffman, G.J., T.A. Howel, and K.H. Solomon. 1980. 
Management of Farm Irrigation Systems (Monograph). ASAE, St. 
Joseph, MI.
Pustaka : 
James, G.J. 1988. Principles of farm irrigation system design. John 
Wiley & Sons, Inc., New York, NY, USA. 543 pp. 
Keller, J.; Bliesner, R.D. 1990. Sprinkle and trickle irrigation. Van 
Nostrand Reinhold, New York, NY, USA. An Avi Book. 651 pp. 
Keller, J.; Karmeli, D. 1975. Trickle irrigation design (1st ed.). 
Rainbird Sprinkler Manufacturing Corporation, Glendora, CA, 
USA. 131 pp. 
Purser, J. and T. Jahns.1999. Trickle Irrigation For Alaska Gardens. 
Alaska Cooperative Extension. The University of Alaska Fairbanks 
Cooperative Extension Service. 
Schwab, G.O., D. D. Fangmeier, W. J. Elliot, and R. K. Frevert. 
1992. Soil and Water Conservation Engineering. John Wiley & 
Sons, Inc. New York, Chichester, Brisbane, Toronto, Singapore.
Fakta : 
• Sistem Irigasi sudah berada sejak abad 
5 di Indonesia 
• Indonesia yang beriklim tropis basah 
dalam kenyataannya juga masih 
membutuhkan irigasi
1. Bagaimana air tersebut dialirkan  
rancangan sistem pengaliran 
2. Berapa jumlah dan bagaimana air 
dialirkan 
3. Apakah jumlah air sama untuk 
pertumbuhan tanaman  
kebutuhan air 
tanaman 
4. Bagaimana kalau ada air berlebih  
drainase
01  kontrak irigasi dan drainase
01  kontrak irigasi dan drainase

More Related Content

Viewers also liked (20)

04 hubungan air, tanah dan tanaman
04   hubungan air, tanah dan tanaman04   hubungan air, tanah dan tanaman
04 hubungan air, tanah dan tanaman
 
6 tree process
6 tree process6 tree process
6 tree process
 
Penilaian 1
Penilaian 1Penilaian 1
Penilaian 1
 
7 water nz2006
7 water nz20067 water nz2006
7 water nz2006
 
4 pattern understanding
4 pattern understanding4 pattern understanding
4 pattern understanding
 
Kedaruratan medis + snake bite
Kedaruratan medis + snake biteKedaruratan medis + snake bite
Kedaruratan medis + snake bite
 
Iuw 6v beda tinggi
Iuw   6v beda tinggiIuw   6v beda tinggi
Iuw 6v beda tinggi
 
Iuw 4 pengukuran planimetris
Iuw   4 pengukuran planimetrisIuw   4 pengukuran planimetris
Iuw 4 pengukuran planimetris
 
3 methods ofdesign
3 methods ofdesign3 methods ofdesign
3 methods ofdesign
 
Profil unpad dan snmptn 2014
Profil unpad dan snmptn 2014 Profil unpad dan snmptn 2014
Profil unpad dan snmptn 2014
 
Pertolongan korban banyak
Pertolongan korban banyakPertolongan korban banyak
Pertolongan korban banyak
 
2 concepts&themes indesign
2 concepts&themes indesign2 concepts&themes indesign
2 concepts&themes indesign
 
Iuw 5 pengetahuan peta
Iuw   5 pengetahuan petaIuw   5 pengetahuan peta
Iuw 5 pengetahuan peta
 
09 hidroponik
09   hidroponik09   hidroponik
09 hidroponik
 
Luka bakar
Luka bakarLuka bakar
Luka bakar
 
Dasar dasar pp
Dasar dasar ppDasar dasar pp
Dasar dasar pp
 
CCIH 2012 Conference, NCD Pre-Conference, Jeffrey Meer, Global Epidemiology o...
CCIH 2012 Conference, NCD Pre-Conference, Jeffrey Meer, Global Epidemiology o...CCIH 2012 Conference, NCD Pre-Conference, Jeffrey Meer, Global Epidemiology o...
CCIH 2012 Conference, NCD Pre-Conference, Jeffrey Meer, Global Epidemiology o...
 
Trauma 2
Trauma 2Trauma 2
Trauma 2
 
9 earthworks
9 earthworks9 earthworks
9 earthworks
 
Iuw 7v beda tinggi
Iuw   7v beda tinggiIuw   7v beda tinggi
Iuw 7v beda tinggi
 

More from Kharistya Amaru

15 drainase bawah permukaan
15   drainase bawah permukaan15   drainase bawah permukaan
15 drainase bawah permukaanKharistya Amaru
 
11 sistem jaringan dan bangunan irigasi
11   sistem jaringan dan bangunan irigasi11   sistem jaringan dan bangunan irigasi
11 sistem jaringan dan bangunan irigasiKharistya Amaru
 
06 kebutuhan air tanaman
06   kebutuhan air tanaman06   kebutuhan air tanaman
06 kebutuhan air tanamanKharistya Amaru
 
07 kebutuhan air tanaman
07   kebutuhan air tanaman07   kebutuhan air tanaman
07 kebutuhan air tanamanKharistya Amaru
 
03 kelembagaan pengelolaan air dalam irigasi
03   kelembagaan pengelolaan air dalam irigasi03   kelembagaan pengelolaan air dalam irigasi
03 kelembagaan pengelolaan air dalam irigasiKharistya Amaru
 
Cidera sistem otot rangka
Cidera sistem otot rangkaCidera sistem otot rangka
Cidera sistem otot rangkaKharistya Amaru
 

More from Kharistya Amaru (11)

15 drainase bawah permukaan
15   drainase bawah permukaan15   drainase bawah permukaan
15 drainase bawah permukaan
 
13 irigasi curah
13   irigasi curah13   irigasi curah
13 irigasi curah
 
12 irigasi tetes
12   irigasi tetes12   irigasi tetes
12 irigasi tetes
 
11 sistem jaringan dan bangunan irigasi
11   sistem jaringan dan bangunan irigasi11   sistem jaringan dan bangunan irigasi
11 sistem jaringan dan bangunan irigasi
 
10 irigasi permukaan
10   irigasi permukaan10   irigasi permukaan
10 irigasi permukaan
 
06 kebutuhan air tanaman
06   kebutuhan air tanaman06   kebutuhan air tanaman
06 kebutuhan air tanaman
 
07 kebutuhan air tanaman
07   kebutuhan air tanaman07   kebutuhan air tanaman
07 kebutuhan air tanaman
 
03 kelembagaan pengelolaan air dalam irigasi
03   kelembagaan pengelolaan air dalam irigasi03   kelembagaan pengelolaan air dalam irigasi
03 kelembagaan pengelolaan air dalam irigasi
 
Cidera sistem otot rangka
Cidera sistem otot rangkaCidera sistem otot rangka
Cidera sistem otot rangka
 
Cedera jaringan lunak
Cedera jaringan lunakCedera jaringan lunak
Cedera jaringan lunak
 
Trauma 1
Trauma 1Trauma 1
Trauma 1
 

Recently uploaded

18-04-UA_REPORT_MEDIALITERAСY_INDEX-DM_23-1-final-eng.pdf
18-04-UA_REPORT_MEDIALITERAСY_INDEX-DM_23-1-final-eng.pdf18-04-UA_REPORT_MEDIALITERAСY_INDEX-DM_23-1-final-eng.pdf
18-04-UA_REPORT_MEDIALITERAСY_INDEX-DM_23-1-final-eng.pdfssuser54595a
 
mini mental status format.docx
mini    mental       status     format.docxmini    mental       status     format.docx
mini mental status format.docxPoojaSen20
 
Accessible design: Minimum effort, maximum impact
Accessible design: Minimum effort, maximum impactAccessible design: Minimum effort, maximum impact
Accessible design: Minimum effort, maximum impactdawncurless
 
Presiding Officer Training module 2024 lok sabha elections
Presiding Officer Training module 2024 lok sabha electionsPresiding Officer Training module 2024 lok sabha elections
Presiding Officer Training module 2024 lok sabha electionsanshu789521
 
Science 7 - LAND and SEA BREEZE and its Characteristics
Science 7 - LAND and SEA BREEZE and its CharacteristicsScience 7 - LAND and SEA BREEZE and its Characteristics
Science 7 - LAND and SEA BREEZE and its CharacteristicsKarinaGenton
 
Enzyme, Pharmaceutical Aids, Miscellaneous Last Part of Chapter no 5th.pdf
Enzyme, Pharmaceutical Aids, Miscellaneous Last Part of Chapter no 5th.pdfEnzyme, Pharmaceutical Aids, Miscellaneous Last Part of Chapter no 5th.pdf
Enzyme, Pharmaceutical Aids, Miscellaneous Last Part of Chapter no 5th.pdfSumit Tiwari
 
How to Configure Email Server in Odoo 17
How to Configure Email Server in Odoo 17How to Configure Email Server in Odoo 17
How to Configure Email Server in Odoo 17Celine George
 
The Most Excellent Way | 1 Corinthians 13
The Most Excellent Way | 1 Corinthians 13The Most Excellent Way | 1 Corinthians 13
The Most Excellent Way | 1 Corinthians 13Steve Thomason
 
Introduction to ArtificiaI Intelligence in Higher Education
Introduction to ArtificiaI Intelligence in Higher EducationIntroduction to ArtificiaI Intelligence in Higher Education
Introduction to ArtificiaI Intelligence in Higher Educationpboyjonauth
 
KSHARA STURA .pptx---KSHARA KARMA THERAPY (CAUSTIC THERAPY)————IMP.OF KSHARA ...
KSHARA STURA .pptx---KSHARA KARMA THERAPY (CAUSTIC THERAPY)————IMP.OF KSHARA ...KSHARA STURA .pptx---KSHARA KARMA THERAPY (CAUSTIC THERAPY)————IMP.OF KSHARA ...
KSHARA STURA .pptx---KSHARA KARMA THERAPY (CAUSTIC THERAPY)————IMP.OF KSHARA ...M56BOOKSTORE PRODUCT/SERVICE
 
Introduction to AI in Higher Education_draft.pptx
Introduction to AI in Higher Education_draft.pptxIntroduction to AI in Higher Education_draft.pptx
Introduction to AI in Higher Education_draft.pptxpboyjonauth
 
Mastering the Unannounced Regulatory Inspection
Mastering the Unannounced Regulatory InspectionMastering the Unannounced Regulatory Inspection
Mastering the Unannounced Regulatory InspectionSafetyChain Software
 
Employee wellbeing at the workplace.pptx
Employee wellbeing at the workplace.pptxEmployee wellbeing at the workplace.pptx
Employee wellbeing at the workplace.pptxNirmalaLoungPoorunde1
 
Organic Name Reactions for the students and aspirants of Chemistry12th.pptx
Organic Name Reactions  for the students and aspirants of Chemistry12th.pptxOrganic Name Reactions  for the students and aspirants of Chemistry12th.pptx
Organic Name Reactions for the students and aspirants of Chemistry12th.pptxVS Mahajan Coaching Centre
 
A Critique of the Proposed National Education Policy Reform
A Critique of the Proposed National Education Policy ReformA Critique of the Proposed National Education Policy Reform
A Critique of the Proposed National Education Policy ReformChameera Dedduwage
 
SOCIAL AND HISTORICAL CONTEXT - LFTVD.pptx
SOCIAL AND HISTORICAL CONTEXT - LFTVD.pptxSOCIAL AND HISTORICAL CONTEXT - LFTVD.pptx
SOCIAL AND HISTORICAL CONTEXT - LFTVD.pptxiammrhaywood
 
Kisan Call Centre - To harness potential of ICT in Agriculture by answer farm...
Kisan Call Centre - To harness potential of ICT in Agriculture by answer farm...Kisan Call Centre - To harness potential of ICT in Agriculture by answer farm...
Kisan Call Centre - To harness potential of ICT in Agriculture by answer farm...Krashi Coaching
 
Separation of Lanthanides/ Lanthanides and Actinides
Separation of Lanthanides/ Lanthanides and ActinidesSeparation of Lanthanides/ Lanthanides and Actinides
Separation of Lanthanides/ Lanthanides and ActinidesFatimaKhan178732
 
Sanyam Choudhary Chemistry practical.pdf
Sanyam Choudhary Chemistry practical.pdfSanyam Choudhary Chemistry practical.pdf
Sanyam Choudhary Chemistry practical.pdfsanyamsingh5019
 

Recently uploaded (20)

18-04-UA_REPORT_MEDIALITERAСY_INDEX-DM_23-1-final-eng.pdf
18-04-UA_REPORT_MEDIALITERAСY_INDEX-DM_23-1-final-eng.pdf18-04-UA_REPORT_MEDIALITERAСY_INDEX-DM_23-1-final-eng.pdf
18-04-UA_REPORT_MEDIALITERAСY_INDEX-DM_23-1-final-eng.pdf
 
mini mental status format.docx
mini    mental       status     format.docxmini    mental       status     format.docx
mini mental status format.docx
 
Accessible design: Minimum effort, maximum impact
Accessible design: Minimum effort, maximum impactAccessible design: Minimum effort, maximum impact
Accessible design: Minimum effort, maximum impact
 
Presiding Officer Training module 2024 lok sabha elections
Presiding Officer Training module 2024 lok sabha electionsPresiding Officer Training module 2024 lok sabha elections
Presiding Officer Training module 2024 lok sabha elections
 
Science 7 - LAND and SEA BREEZE and its Characteristics
Science 7 - LAND and SEA BREEZE and its CharacteristicsScience 7 - LAND and SEA BREEZE and its Characteristics
Science 7 - LAND and SEA BREEZE and its Characteristics
 
Enzyme, Pharmaceutical Aids, Miscellaneous Last Part of Chapter no 5th.pdf
Enzyme, Pharmaceutical Aids, Miscellaneous Last Part of Chapter no 5th.pdfEnzyme, Pharmaceutical Aids, Miscellaneous Last Part of Chapter no 5th.pdf
Enzyme, Pharmaceutical Aids, Miscellaneous Last Part of Chapter no 5th.pdf
 
How to Configure Email Server in Odoo 17
How to Configure Email Server in Odoo 17How to Configure Email Server in Odoo 17
How to Configure Email Server in Odoo 17
 
The Most Excellent Way | 1 Corinthians 13
The Most Excellent Way | 1 Corinthians 13The Most Excellent Way | 1 Corinthians 13
The Most Excellent Way | 1 Corinthians 13
 
Introduction to ArtificiaI Intelligence in Higher Education
Introduction to ArtificiaI Intelligence in Higher EducationIntroduction to ArtificiaI Intelligence in Higher Education
Introduction to ArtificiaI Intelligence in Higher Education
 
KSHARA STURA .pptx---KSHARA KARMA THERAPY (CAUSTIC THERAPY)————IMP.OF KSHARA ...
KSHARA STURA .pptx---KSHARA KARMA THERAPY (CAUSTIC THERAPY)————IMP.OF KSHARA ...KSHARA STURA .pptx---KSHARA KARMA THERAPY (CAUSTIC THERAPY)————IMP.OF KSHARA ...
KSHARA STURA .pptx---KSHARA KARMA THERAPY (CAUSTIC THERAPY)————IMP.OF KSHARA ...
 
Introduction to AI in Higher Education_draft.pptx
Introduction to AI in Higher Education_draft.pptxIntroduction to AI in Higher Education_draft.pptx
Introduction to AI in Higher Education_draft.pptx
 
Mastering the Unannounced Regulatory Inspection
Mastering the Unannounced Regulatory InspectionMastering the Unannounced Regulatory Inspection
Mastering the Unannounced Regulatory Inspection
 
9953330565 Low Rate Call Girls In Rohini Delhi NCR
9953330565 Low Rate Call Girls In Rohini  Delhi NCR9953330565 Low Rate Call Girls In Rohini  Delhi NCR
9953330565 Low Rate Call Girls In Rohini Delhi NCR
 
Employee wellbeing at the workplace.pptx
Employee wellbeing at the workplace.pptxEmployee wellbeing at the workplace.pptx
Employee wellbeing at the workplace.pptx
 
Organic Name Reactions for the students and aspirants of Chemistry12th.pptx
Organic Name Reactions  for the students and aspirants of Chemistry12th.pptxOrganic Name Reactions  for the students and aspirants of Chemistry12th.pptx
Organic Name Reactions for the students and aspirants of Chemistry12th.pptx
 
A Critique of the Proposed National Education Policy Reform
A Critique of the Proposed National Education Policy ReformA Critique of the Proposed National Education Policy Reform
A Critique of the Proposed National Education Policy Reform
 
SOCIAL AND HISTORICAL CONTEXT - LFTVD.pptx
SOCIAL AND HISTORICAL CONTEXT - LFTVD.pptxSOCIAL AND HISTORICAL CONTEXT - LFTVD.pptx
SOCIAL AND HISTORICAL CONTEXT - LFTVD.pptx
 
Kisan Call Centre - To harness potential of ICT in Agriculture by answer farm...
Kisan Call Centre - To harness potential of ICT in Agriculture by answer farm...Kisan Call Centre - To harness potential of ICT in Agriculture by answer farm...
Kisan Call Centre - To harness potential of ICT in Agriculture by answer farm...
 
Separation of Lanthanides/ Lanthanides and Actinides
Separation of Lanthanides/ Lanthanides and ActinidesSeparation of Lanthanides/ Lanthanides and Actinides
Separation of Lanthanides/ Lanthanides and Actinides
 
Sanyam Choudhary Chemistry practical.pdf
Sanyam Choudhary Chemistry practical.pdfSanyam Choudhary Chemistry practical.pdf
Sanyam Choudhary Chemistry practical.pdf
 

01 kontrak irigasi dan drainase

  • 1. IRIGASI & DRAINASE PERTEMUAN 01 ESD-NPB-SDR-ARU
  • 2. KONTRAK BELAJAR KETENTUAN KULIAH/PRAKTIKUM KETERLAMBATAN KULIAH MAX 15 MENIT, LEBIH DARI ITU MAHASISWA DILARANG MASUK KELAS PRAKTIKUM HADIR TEPAT WAKTU KEHADIRAN KULIAH MINIMAL 80 %, KEHADIRAN PRAKTIKUM 100% TIDAK RIBUT/TIDAK MENGERJAKAN TUGAS LAIN SELAMA MENGIKUTI KULIAH/PRAKTIUM MK INI
  • 3. KOMPONEN PENILAIAN Makalah/Presentasi .................. 10 % Tugas PR .................. 10 % UTS .................. 25 % UAS .................. 25 % Praktikum .................. 30 % Total ..................100 % Huruf Mutu Angka Mutu Rentang Nilai A 4 ≥ 80 B 3 68 - 79 C 2 56 - 67 D 1 45 - 55 E 0 ≤ 44
  • 4. PERKULIAHAN (01) 1. Kontrak Pembelajaran, Brain Storming 2. Pendahuluan Irigasi dan Drainase 3. Kelembagaan Pengelolaan Air dalam Irigasi 4. Hubungan air, tanah dan tanaman 5. Hubungan air, tanah dan tanaman 6. Model-Model Perhitungan Kebutuhan Air Tanaman 7. Model-Model Perhitungan Kebutuhan Air Tanaman 8. UTS
  • 5. PERKULIAHAN (02) 9. Komponen Irigasi Dalam System Hidroponik 10. Metode Irigasi Permukaan (surface irrigation) 11. Metode Irigasi Permukaan (surface irrigation) 12. Metode Irigasi Tetes (drip irrigation) 13. Metode Irigasi Curah (sprinkler irrigation) 14. Pengertian, Prinsip dan kriteria drainase permukaan 15. Pengertian, Prinsip dan kriteria drainase bawah permukaan 16. UAS
  • 6. Pustaka : Allen. Richard G. 1998. Crop Evapotranspiration – Guidelines for Computing Crop Water Requirement. FAO Irrigation and Drainage Paper 56. Utah State University. Logan.Utah. USA ASAE. 1989a. Field evaluation of micro irrigation systems. EP405.1. ASAE Standards. Amer. Soc. Ag. Eng., St. Joseph, MI. ASAE. 1989b. Design and installation of micro irrigation systems. EP409. ASAE Standards. Amer. Soc. Ag. Eng., St. Joseph, MI. Bafdal, Nurpilihan, Dwiratna NP, Sophia, Suryadi, Edy. 2012. Buku Ajar Irigasi dan Drainase. Jurusan Teknik dan Manajemen Industri Pertanian. UNPAD. Bandung Hoffman, G.J., T.A. Howel, and K.H. Solomon. 1980. Management of Farm Irrigation Systems (Monograph). ASAE, St. Joseph, MI.
  • 7. Pustaka : James, G.J. 1988. Principles of farm irrigation system design. John Wiley & Sons, Inc., New York, NY, USA. 543 pp. Keller, J.; Bliesner, R.D. 1990. Sprinkle and trickle irrigation. Van Nostrand Reinhold, New York, NY, USA. An Avi Book. 651 pp. Keller, J.; Karmeli, D. 1975. Trickle irrigation design (1st ed.). Rainbird Sprinkler Manufacturing Corporation, Glendora, CA, USA. 131 pp. Purser, J. and T. Jahns.1999. Trickle Irrigation For Alaska Gardens. Alaska Cooperative Extension. The University of Alaska Fairbanks Cooperative Extension Service. Schwab, G.O., D. D. Fangmeier, W. J. Elliot, and R. K. Frevert. 1992. Soil and Water Conservation Engineering. John Wiley & Sons, Inc. New York, Chichester, Brisbane, Toronto, Singapore.
  • 8. Fakta : • Sistem Irigasi sudah berada sejak abad 5 di Indonesia • Indonesia yang beriklim tropis basah dalam kenyataannya juga masih membutuhkan irigasi
  • 9. 1. Bagaimana air tersebut dialirkan  rancangan sistem pengaliran 2. Berapa jumlah dan bagaimana air dialirkan 3. Apakah jumlah air sama untuk pertumbuhan tanaman  kebutuhan air tanaman 4. Bagaimana kalau ada air berlebih  drainase