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In this section the technical information of the project is presented in form of the following items:
Body specifications
 
Item
Quantity
Dam Type Concrete
Height From Foundation 7.15
Foundation width 31.9 m
Crest length 125.5 m
Crest width 13.2 m
Dam body volume 54800 m3
Body specifications
Reservoir specifications
Item
Quantity
Total Reservoir Volume 3.75 m3
Reservoir Area 79.8×104 m2
Reservoir Length 4 km (approximately)
Reservoir Width 125.5 m (in average)
N.W.L 185.8 m
Reservoir specifications
Diversion system
Diversion during construction will be done in two stages by constructing an embankment which its length and maximum height are 400m and 7m, respectively. The designed discharge is about 1500 m3.
Diversion system
Instrumentation
Instrument type
Reason(s)
Stress gauge - Piezometer - Strain gauge - Thermometer - Moisture meter Ground water level
Stress gauge - Piezometer - Strain gauge - Thermometer - Moisture meter Probability of conglomerates falling
Stress gauge - Piezometer - Strain gauge - Thermometer - Moisture meter Changing the geotechnical properties 
Stress gauge - Piezometer - Strain gauge - Thermometer - Moisture meter High overburden and slope
Stress gauge - Piezometer - Strain gauge - Thermometer - Moisture meter Minimum overburden
Stress gauge - Piezometer - Strain gauge - Thermometer - Moisture meter Squeezing zone
Accelerograph - Thermometer- Moisture meter (at power plant location) Probability of landsliding  in portal and its effects on forebay and outlet
Instrumentation
Quarries and their specifications
Borrowed sources of Chamshir regulating-diversion dam, transmission tunnel and irrigation-drainage network projects, to provide the materials for concrete are included two sand and gravel source called “Junction of Kheirabad-Zhoreh” and “Sholehzar”. “Junction of Kheirabad-Zhoreh” borrowed source has been located 3 km below Chamshir regulating-diversion dam site. “Sholehzar” borrowed source has been situated at 12 km upstream of the regulating-diversion dam and on the margins of the Gachsaran-Ganaveh road. Another borrowed source of soil has been located on the margins of Sardasht-Zeidoon asphalt road that would use to construct the access road. There are 3 borrowed sources of fine and 3 for coarse graded soil have been identified in irrigation-drainage network region. The coarse ones are Gamaran, Darehgap and Gorbe-e and the fine ones are Kenarkoh, Gavzard and Chahshirin-Malsanan. A limestone borrowed source has been identified for masonry structures, on the route of Zeidoon to Ameri village. It should be noted that, materials for constructing canal embankment are combination of the fine and coarse graded soils of the borrowed sources.
Quarries and their specifications
General specifications of powerhouse
Item
Quantity
Type Surface
Capacity 17 MW
Annual energy generation 90 GWH
Turbine type Francis turbine with horizontal axis
General specifications of powerhouse
Specifications of powerhouse equipments
Item
Quantity
Unit 3
Totall 17 MW
Specifications of powerhouse equipments
Specifications of powerhouse building
Due to the technical and economical studies, performance reliability of the units and orientation of turbine axis (horizontal or vertical), totally 3 Francis turbines with horizontal axis with 17MW power are introduced for installation capacity of Chamshir power plant. Chamshir power plant of diversion-regulating dam with 3 units of Francis turbine with horizontal axis contains the following parts:
1- Machinery Saloon
2- MV Room
3- Control Room
4- PLC Room
5- Diesel Room
6- Battery Room
7- Tailrace
8- Bypass system
9- Storage
10- Workshop
11- Cable Room
12- Ax. Transformer
13- Yard Area
14- Office
15- Substation
Specifications of powerhouse building
Specifications of powerhouse outlet tunnels
Tailrace of power plant is situated under the machine hall and convoy outlet water from draft tubes to outlet channel by 3 channels. Dimensions of tailrace structure at draft tube position have been design to ensure flowing easily and control required submerged depth. The outlet channels are directed and joined together out of building. Stop-logs have been placed at junction of each channel to outlet basin for separating each unit from others on emergency occasions.
In designed flow rate, the normal tailrace level is 93 which is 2.9m above turbine axis. Invert level at tube draft and at canals intersection are 89 and 91.5, respectively.
Specifications of powerhouse outlet tunnels
Specifications of powerhouse waterways
Item
Quantity
Tunnel 1
Tunnel Length 6913 m
Tunnel Type Circular
Excavation Diameter 5.3 m
Finished Diameter 4.6m
Cover Type Concrete
Total excavation volume (in open and closed spaces) 155077 m3
Tunnel Capacity 30 m3/s
Specifications of powerhouse waterways
Technical specifications of post and switchyard

Consumer

Required
Power (KW)

Transformator capacity

TBM and ancillary equipment

3920

5MVA-33KV/400V

Segment site

900

1250KVA-33KV/400V

Crusher - Batching and related equipment

720

1000KVA-33KV/400V

Administration and Management Affairs Office

160

250KVA-33 KV /400V

Facilities and Accommodation Office

425

630KVA-33KV/400V

Total

6125

Technical specifications of post and switchyard
Intake structures
Item
Diversion- Regulation Dam
Tunnel
Box from Tunnel to Entrance of Forebay
Forebay
Intake structures
Outlet structures
Item
Penstock
Hydroelectric Power Plan
Pipeline System (GRP)
Trapezoidal Channel to the beginning of Irrigation and Drainage Network
Outlet structures
Access roads and bridges
1- Technical specifications of access roads
 
Name of the road
Average width (m)
Length (km)
Total length 14 km (approximately)
 
Access road to the diversion-regulating dam and access road to entrance and exit of the tunnel are included.
 
2- Technical specifications of the bridges
 
Item
Quantity
Number of  bridges

23

 
 
3- Technical specifications of access tunnels
 
This project does not include any access tunnel.
Access roads and bridges
Complementary operations
1-Permanent buildings:
Construction of permanent buildings have been considered as below, to accommodate client and consultant  personals
Item
Detail

Area

1 A two-story building for operation and maintenance  100 m2
Complementary operations
Specifications irrigation and drainage network of Chamshir
Item
Quantity
Total Area Network (ha)

36794

The total length of the main channel (km)

89

The total length of the channel (km)

46

Secondary channel length (km)

80

The total length of the main drainage (km)

19

Total length Rhksh grade (km)

52

The total length of the secondary drainage (km)

129

The total length of main pipe (km)

99

The total length of the main half pipe (km)

180