Design Criteria Description

1. GENERALa. Site Locationb. Climatic Conditionc. Code and standard

2. HYDROLOGICAL & HYDRAULIC CONDITIONa. Discharge

Mencakup debit design, formula-formula, lengkung debit.b. Catchment Area

Menampilkan luasan area atau bisa dilengkapi dengan gambar-gambar sebagai lampiran.

c. HydraulicHydraulic parameter pada water-way termasuk Head-race tunnel, penstock

d. Water ManagementAnalisa terhadap kondisi air sungai antara weir dan tail-race pada saat musim kemarau atau kemungkinan ada aliran anak sungai diantara kedua lokasi tsb.

3. TOPOGRAPHYCAL CONDITIONa. Uraian dan batasan thd Detailed Topography of Main Structureb. Uraian dan batasan thd Detailed Topography of Infra Structure, meliputi civil-work yang

berkaitan dengan access road, permanent road, slope protectionc. Plant Grade

Uraian dan batasan thd Setting out untuk mendapatkan elevasi untuk struktur utama yang dilakukan yang dibuat dari Site Investigation

4. GEOKOGICAL CONDITIONa. Interpretation & Analyze against to Geological condition for Hydraulic Structure dan Main

StructureUraian dan analisa thd Parameter-parameter dan batasan-batasan yang diperlukan sebagai input-data untuk disain yang dilakukan oleh Civil & structure Engineer pada hydraulic structure & Main- structure.

b. Interpretation & Analyze against to Geological Condition And Map for TunnelTetrutama uraian dan batasan thd Data & parameter untuk rock mechanic

c. Interpretation & Analyze against to Geologic Condition for Critical Geological Condition meliputi:

- Hydraulic structure area- Penstock route line area- Power House area

5. CIVIL DESIGNUraian dan analisa thd:

a. River Diversion and Topography for temporary Coffer Dam terutama:- Alocation – berhubungan dengan topography.- Hydrological Requirement

b. Weir structure- Hydraulic requirement- Structure design calculation formula- Structure Stability formula - Gaya-gaya yang bekerja

c. Water Intake and De-Sedimentation structure

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- Hydrological and hydraulic requirement- Structure design calculation formula- Structure Stability formula - Gaya-gaya yang bekerja

d. Headrace Box Culvert - Excavation- Structure- Embankment

e. Tunnel- Dimension- Stability earth opening- Structure of tunnel portal- Tunnel lining

f. Surge Tank- Berkaitan dengan allocation Topography- Berkaitan dengan geological condition- Berkaitan dengan hydraulic calculation utk water-hammer- Structure Stability and treatment

g. Penstock(Civil works)- Berkaitan dengan Topography- Berkaitan dengan Geotechnical - Anchor block Foundation- Gaya-gaya yang bekerja pada pondasi penstock termasuk water hammer

h. Power House – Geology- Berkaitan dengan allocation Topography- Berkaitan dengan geological conditionat- Equipment foundation- Foundation structure- Building structure

i. Miscellaneous- Access road- Slope protection- Construction Material for civil work as

Quarry, borrow pit, spoil bank

6. MECHANICAL DESIGN ENGINEERING

a. Hydro-mechanic analysisb. Hydro Gatec. Mechanical Penstock

7. INTERFACING BETWEEN CIVIL WORK PORTION AND GENERATING EQUIPMENT PLANTa. Hydrology & Hydraulic Analyze

- Water qualityb. Coordinate & Elevation

- hydro turbine- Draft tube

c. Topography – Map (Power House & Tran’s Line.d. Head lossese. Soil Restivity

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f. Electricity Power Consumption of Hydro Gateg. Plant – Lay Outh. Penstock to Power Housei. Lay Out of GE (Generating Equipment) Plantj. Over Head Crane Datak. Lay Out of Power Housel. Equipment Design Input (Dimension & Loading Data)m. Spiral Casing & Draft Tuben. Tail Raceo. Building Facilities

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Detailed Design criteria description of Civil Work Portion

1. Generala. Site location and condition

The project locations Genyem HPP 2X10 MW utilize the Sermo river flow run-off and the head of the elevation between river up-stream and down-stream. Therefore the Power-house will be allocated on the down stream area and the water flow back to down-stream of Sermo river through tail-race of its Power-station.

General Description of the Project Feature

Weir structure River diversion and temporary coffer-dam Water Intake structure De-sedimentation structure Head-race Box-culvert Head-race tunnel Adit-tunnel Surge Tank Guard valve house Penstock Tunnel Open-face Penstock Interconnection between penstock and Inlet valve Hydro Gate Power-house Civil works design for Switch-yard and 70 KV Transmission-line Infra-structures, such as: access-road, bridge, slope protection and etc.

Prior to perform the detailed design engineering site investigations shall be carried out, accordingly it consists of the followings.

Hydrology and hydraulic site investigation comprise of catchments area, river water flow and run-off, water discharge, water quality, hydraulic condition and etc.

Topographical survey comprise of sites detailed survey are focus to main structures and infra structures, which are required to allocate Plant component of HPP.

Geological site-survey and investigation cover geotechnical investigation are consisting of boring-hole investigation, laboratory test and DCPT( Dutch Cone Penetration Test. Many points number of boring-hole investigation are determined by several depth requirements, event laboratory-test include soil and rock physical - mechanic test to find the geological and geotechnical parameter as detailed design requirements

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b. Code and standard

In principle the latest edition of codes and standards as listed below shall be applied.

ASTM American Society for Testing and Materials (2005)

JIS Japanese Industrial Standards (2004)

AASHTO American Association of States Highway and Transportation Officials (1997)

ACI American Concrete Institute (2005)

AISC Architecture Institute of JapanRecommendation for design of building form (2001)Design Standard for steel structure (2002)

JSCE Japan Society of Civil Engineering (2002

ASCE American Standards for Civil Engineering (2002))

AWS American Welding Society (2002)

UBC Uniform Building Code(1997)

2. Hydrology and Hydraulic Condition

Various hydrologic data such as daily rainfall, river discharge, catchments area shall be compiled and shall be added by the result data of Hydrology and Hydraulic site investigation; and then all data will be evaluated, interpretive and analyze for detailed design engineering.

a. Catchments area b. Discharge.

On the basis of the calculation on the detailed design, the following discharges shall be determined.

Average Annual Discharge Average Monthly Discharge Firm Discharge Flood Discharge

c. Hydraulic calculation d. Water Management e. Water quality and sedimentation

3. Topographical Condition4444`

a. Detailed Topography of Main Structure

b. Detailed Topography of Infra Structure, include civil-work for supporting to main –structure, such as access road, permanent road, slope protection and etc.

c. Plant Grade include Setting out for allocation the elevation and coordinate of main civil structure, hydro-gate, route-line of Head-race tunnel and penstock, main Generating Equipment and Power-house based on the analyze and interpretation of result of site Topography survey.

4. Geological condition of 7

a. Prior to perform the Detailed Design, the geological fields Investigations shall be carried out consist primarily of the followings.

Lugeon tests In-situ rock tests Vertical logging Grouting tests Unconfined compression tests Triaxial compression tests Permeability tests Underground water table measurement tests

b. Interpretation & Analyze against to Geological condition for Hydraulic Structure and Main Structure will be described by Parameters and formulas as input design data for detailed Design are used by Civil & structure Engineer for hydraulic structure, Main- structure, and all foundations.

c. Interpretation & Analyze against to Geological Condition for Tunnel in particularly for rock mechanic tests and the field geological investigations is intended to secure approximate solutions to such problems as:

Determine to depth of bed-rock Determine depth of rock weathering Determine major layering conditions in soil material Locate boundary of different materials

d. Interpretation & Analyze against to Geologic Condition for depth of excavation requirement for the several main structure during construction as in the followings

River Diversion Hydraulic structure as Weir and rive-intake area Head-race Box Culvert area Penstock route line area Power House area

5. Civil Design

a. River Diversion and temporary Coffer Dam/temporary Dyke

Allocation of temporary Dyke based on topography condition Geological Requirement Hydraulic calculation Stability of Dyke-embankment

b. Weir structure

Hydraulic requirement Structural design calculation formula Stability formula Up lift pressure Stress Calculation Stability against Seepage Foundation requirement Stilling basin requirement

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c. Water Intake and De-Sedimentation structure

Hydrological and hydraulic requirement Structural design calculation formula Stability formula Up lift pressure Stress Calculation Foundation requirement

d. Headrace Box Culvert

Hydraulic design Excavation requirement Structure calculation Embankment requirement

e. Tunnel

Hydraulic design and Dimension Stability earth opening Structure of tunnel portal Rock support Tunnel lining

Internal Pressure External Pressure Grouting Pressure Reinforcing requirements Stress due to Internal Hydrodynamic Pressure Stress due to external Hydrodynamic Pressure

f. Surge Tank

Allocation of Surge-tank will be determined by Detailed Topography Map Geological condition Hydraulic calculation

Hydraulic Transient analyze Design parameter Stability conditions Surge calculation Water-hammer

Hydraulic calculation includes: Design parameter Stability analyze Surge calculation

Structure Design Internal pressures External pressures Stability and treatment

g. Penstock Open-face and Penstock Tunnel(Civil works)

Topography Geotechnical Anchor block Foundation Pressure to penstock.

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h. Power House –

Allocation Topography Geological conditional Equipment foundation Foundation structure Building structure

i. Miscellaneous

Access road Slope protection Construction Material for civil work include concrete materials, such as:

Quarry, borrow pit and spoil bank

6. Mechanical design

a Penstock Hydraulic analysisb. Mechanical Penstockc. Hydro Gate

7. Structural design

a. Design methodb. Concrete designc. Reinforced concrete designd. Loadinge. Earthquake (Seismic Load)f. Pressure (Soil, wind, hydraulic)g. Structural Stability.h. Steel Structure design

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Design Criteria Description

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