BRACKISHWATER FISHERIES RESEARCH STATION (BFRS): DESIGN - PHASE 2
PEOPLE'S REPUBLIC OF BANGLADESH
MINISTRY OF FISHERIES AND LIVESTOCK
FISHERIES RESEARCH INSTITUTE
|
BRACKISHWATER FISHERIES RESEARCH STATION (BFRS): DESIGN - PHASE 2 |
FAO/UNDP TA-PROJECT BGD 83-010
IDA/WB AGRICULTURAL RESEARCH II PROJECT
REPORT NO 13, FEBRUARY 1987
Hyperlinks to non-FAO Internet sites do not imply any official endorsement of or responsibility for the opinions, ideas, data or products presented at these locations, or guarantee the validity of the information provided. The sole purpose of links to non-FAO sites is to indicate further information available on related topics.
This electronic document has been scanned using optical character recognition (OCR) software. FAO declines all responsibility for any discrepancies that may exist between the present document and its original printed version.
1.1 Background to the project
1.2 Brackishwater resources
1.3 Brackishwater Fisheries Research Station (BFRS)
1.4 Terms of reference for the design phase
2 SITE SELECTION AND DEFINITION OF DESIGN
2.1 Site and design requirements
2.2 Characteristics of the proposed area
2.3 Definition of the site area
2.4 Development of the design
2.5 Proposed layout
3.1 Main walls and site development
3.2 Pond structures
3.3 Water supply
3.4 Water drainage
3.5 Combined supply and drainage
3.6 Water control structures
3.7 Access
3.8 Excavation and fill volumes
4.1 Definition of requirements
4.2 Laboratory buildings
4.3 Other buildings
4.4 Layouts; principles of design
5.1 Water supply
5.2 Drainage, treatment, and disposal
5.3 Power supplies
5.4 Lighting
5.5 Controls and alarm systems
5.6 Air supplies
5.7 Ventilation, cooling, and refrigeration
5.8 General distribution and layout
5.9 Specialized equipment
6.1 Timescale for implementation and development
6.2 Budget targets
6.3 Acquisition of land
6.4 Selection of consulting engineers
6.5 Selection of contractors
6.6 Project specifications
6.7 Project direction
LIST OF TABLES
Table 1 - Overall operational objectives of BFRS
2 - Detailed research objectives of BFRS
3 - General site and design requirements
4 - Site and design requirements: physical facilities
5 - Relative scoring of selected sites for BFRS
6 - Paikgacha site: general characteristics
7 - Advantages and disadvantages of the Paikgacha site
9 - Critical physical requirements of the design
10 - Theoretical area needed for BFRS
11 - Outline areas for the site buildings
12 - Development of site boundaries
15 - Supply canals: summary of design
17 - Drainage canals: summary of design
19 - Waste pipe and sluice sizes
20 - Material balance: use of borrow pits
22 - Building unit areas and design notes
24 - Critical building design factors
25 - Water supplies: summary of quantities
26 - Priorities for power supplies
27 - Air supplies: summary of quantities
29 - Summary of laboratory services
30 - Dimensioning and specification
32 - Significant delaying factors
33 - Phasing of BFRS development
35 - Potential project cost savings
36 - Actual land area requirements
38 - Factors affecting selection of contractors
39 - Specific precautions in project development
LIST OF FIGURES
Figure 1 - General location of the site for BFRS
2 - Paikgacha (North Shiberbati) site
4 - Topographical details of Paikgacha site
7 - Salinity at Paikgacha site
8 - Outline area for development
10 - Tidal cycles and pond depths
11 - Pond wall and drainage cross-sections
12 - Supply channel cross-section
16 - Smaller water control structures
17 - Representative layout: analytical laboratory
18 - Representative layout: toxicology/pathology laboratory
19 - Representative layout: hatchery laboratory
20 - Representative layout: demonstration/field laboratory
21 - Representative layout: services centre
24 - Distribution outline for water supply
26 - Distribution outline for drainage
29 - Outline implementation timetable for BFRS
30 - Flowchart for critical events during BFRS development
31 - Land allocation map - proposed site area
LIST OF ANNEXES
Annex A - Itinerary, and persons met
Table C1 - Brackishwater aquaculture production growth
C2 - Projects in brackishwater aquaculture
C3 - Significance of brackishwater production
C4 - Soil texture, pH, nutrient status Paikgacha
D - Pond system design: design notes
E - Design basis for hatchery facilities
Table F1 - Approximate power loads
F2 - Miscellaneous services specifications
(a) This report provides the final description of the design of the BFRS; and completes part 2 of the consultants assignment to the project.
(b) A design is provided for the site selected at Paikgacha, Khulna district, comprising layouts of ponds, laboratory, administrative and service facilities, specifications for facilities, services, and installed equipment, and details of significant engineering requirements for successful development. In addition, a budget costing is provided for contract guidance and assisting in allocation of funds. A timetable of development is also included, defining the critical points in the completion of the project.
(c) A draft tender notification is provided for local consultant engineers, together with terms of reference and a schedule of work, and a design/supervision timetable.
(d) The main points to note are:
The site is suitable for the requirements defined in the research programme, and meets the site selection criteria well.
Additional site area is required for provision of fill material for main walls, as the site is relatively low-lying.
Final layouts may be affected by detailed results of soil bearing tests and of freshwater availability.
Timing of development is particularly critical: unless clear and decisive executive control is exercised, it will be difficult to complete significant construction work within the 1986/87 dry season. The accompanying figure demonstrates the critical points in the early development of the project.
At present (1986) price levels, the project development is estimated to cost around 100–110% of specifically allocated funds. This cannot necessarily be guaranteed if long delays occur.
As presently specified, the design fulfills the requirements of the main defined research objectives in a reasonably efficient and cost-effective manner. Project costs can be reduced, but only at the cost of compromising some of these objectives.