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BS ISO 26906:2015

$198.66

Hydrometry. Fishpasses at flow measurement structures

Published By Publication Date Number of Pages
BSI 2015 60
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PDF Catalog

PDF Pages PDF Title
7 Foreword
8 Introduction
9 1 Scope
2 Normative references
3 Terms and definitions
10 4 Symbols
12 5 Principle
6 Installation
6.1 Requirements for gauging structure and fishpass installations
6.1.1 Selection of site
13 6.1.2 Installation conditions
14 6.1.3 Upstream channel
6.1.4 Separate channel
15 6.1.5 Downstream channel
6.1.6 Flow measurement and fishpass structures
6.1.7 Maintenance
16 6.1.8 Measurement of head
6.2 Requirements specific to the fishpass
6.2.1 General
17 6.2.2 Guidelines for basic parameters of fishpasses
6.2.3 Location and attraction flows
6.2.4 Downstream entry/exit to fishpass
18 6.2.5 Upstream exit/entry from fishpass
7 Fishpass performance
7.1 General
7.1.1 Types
7.1.2 Fishpasses with interconnected pools
7.1.3 Fishpasses with continuous energy dissipation
19 7.1.4 Calibration and discharge coefficient
7.2 Larinier super-active baffle fishpass with baffle sizes between 75 mm and 150 mm
7.2.1 Description
20 7.2.2 The following features apply to the range of baffle sizes from 75 mm to 150 mm
21 7.2.3 Limitations
22 7.2.4 Modular flow calibration
23 7.2.5 Modular limit
7.3 Pool-type fishpass with V-shaped overfalls
7.3.1 Description
26 7.3.2 Determination of discharge under free flow conditions
29 7.3.3 Modular limit
30 7.3.4 Determination of discharge under submerged flow conditions
31 7.3.5 Limitations
7.3.6 Scaling up to standard design
7.4 Dutch pool and orifice fishpass
7.4.1 Description
33 7.4.2 Determination of discharge
35 7.4.3 Scaling up the standard design
8 Computation of discharge
8.1 Principles
36 8.2 Details
9 Uncertainties in flow determination
9.1 General
37 9.2 Combining uncertainties
38 9.3 Uncertainty in the discharge coefficient u*(CDe)68 for the fish-pass
9.4 Uncertainty in the effective head
9.5 Uncertainty budget
9.5.1 General
39 9.5.2 Compound structures – sources of uncertainty
10 Example
10.1 Installation
40 10.2 Flow conditions
10.3 Computation of discharge
10.3.1 Modularity
10.3.2 Flow over the flat-V weir
41 10.3.3 Flow through the fish-pass
10.3.4 Total flow
10.3.5 Uncertainty in flow through the fish-pass
42 10.3.6 Uncertainty in flow over the flat-V weir
10.3.7 Uncertainty in total flow
10.3.8 Reduction in overall uncertainty if second head gauge were to be installed upstream of the fish-pass
43 Annex A (informative) Introduction to measurement uncertainty
52 Annex B (informative) Performance guide for hydrometric equipment for use in technical standards
56 Bibliography
BS ISO 26906:2015
$198.66