| Term No. | Term Name/Term Description | Action |
|---|
| 198 |
| Maximum likelihood method | | The method of estimating a parameter (or parameters) of a population by that value (or values) which maximizes (or maximize) the likelihood of a sample...... | | Similar Terms |
| 243 |
| Least square method | | A method of determining the arbitrary constants in the equation of a curve, based upon the principle that the most probable value of a quantity to be deduced from a set of measurements is obtained by making the sum of the squares of the residual (deviations from it) a minimum...... | | Similar Terms |
| 265 |
| Freehand method | | A method of describing the relationship in a series of data, ordered in time or space, whereby the general trend is estimated by drawing a line freehand through or near the series of plotted observations. Hence `freehand fit`...... | | Similar Terms |
| 268 |
| Moving average method of fit | | The averaging at the central year of a series of overlapping means to smooth out, or damp down, undue high and low, short-term values. Hence, the `moving average fit`. (See also 279)...... | | Similar Terms |
| 1171 |
| Similar Terms |
| 1232 |
| Integration method of velocity measurement | | A means of determining the mean velocity at a vertical depth of a stream by noting the total number of revolutions of a current meter vane and the time consumed, while the meter is slowly lowered from the surface to the bed and returned one or more times...... | | Similar Terms |
| 2062 |
| Warping, or Commutation method | | A process of allowing the tide to overflow low lying lands so as to deposit thereon the silt which it carries in suspension...... | | Similar Terms |
| 2284 |
| Similar Terms |
| 2566 |
| Gravity method (two-dimensional method of analysis) | | A method for stress analysis of gravity dams assuming the structure of the dam to be composed of vertical cantilever elements that act independently of each other while the vertical stress varies linearly...... | | Similar Terms |
| 2567 |
| Slab analogy method | | A two-dimensional method of studying the non-linear distribution of stresses in a dam by considering the analogy between the stresses in a two-dimensional elastic body and the deflections of an unloaded slab of the same shape bent by forces and couples applied round its edges...... | | Similar Terms |
| 2568 |
| Lattice analogy method | | A three-dimensional method of analysing stresses in a dam by considering it a frame consisting of diagonally braced squares...... | | Similar Terms |
| 2569 |
| Trial load method | | A three-dimensional method of dam analysis in which the dam is assumed to be made up of two or more systems of elements; for arch dams - vertical cantilever elements and horizontal arch elements; and for gravity dams - vertical cantilever element, horizontal beam elements and a twisted structure system of vertical and horizontal elements. Each syst..... | | Similar Terms |
| 2570 |
| Amplified trial load method | | For arch dams it is an assumption that the water load is divided between the arch and cantilever elements, that the division may or may not be constant from abutment to abutment for each horizontal element and that the true division of load is the one which causes equal arch and cantilever deflections in all arches and cantilevers instead of at the..... | | Similar Terms |
| 2571 |
| Abridged trial load method, or Simplified trial load method | | Used for arch dam preliminary design work by using tables and curves for determining deflections of arches. Modified assumptions are made with regard to the foundation in this analysis which neglect (i) differences in elasticity of rock and concrete, (ii) the angle that the plane of the abutment makes with a vertical plane and (iii) certain seconda..... | | Similar Terms |
| 2572 |
| Trial load twist method (for gravity dams) | | It is based on the assumption that the water load is divided between a structural system made up of vertical and horizontal elements with each system occupying the entire volume of the dam. For ungrouted joints there are two systems, the cantilever structure and the twisted structure. The grouted joints have three systems, the cantilever structure,..... | | Similar Terms |
| 2573 |
| Finite element method | | A method, wherein a continuous system is represented as an assemblage of finite flat elements interconnected at a finite number of nodal points. The analysis of this idealised structure is then carried out by standard methods of structural analysis by determining the stiffnesses of individual elements and then superposing these to obtain the total ..... | | Similar Terms |
| 2575 |
| Elastic arch method | | A theory of arch analysis wherein the dam is divided into horizontal arch rings assumed to be independent of each other. It is possible to take into account various deformations caused due to elasticity, temperature change and shrinkage, abutment yielding or variable loads and arch forms...... | | Similar Terms |
| 2576 |
| Arch and crown cantilever method | | A preliminary method of analysis of arch dams when the distribution of load between arch and cantilever elements is assumed by adjustments of the deflections of the crown of each arch and the main cantilever section. It is then assumed that the load distribution found at this point is applicable to the entire structure and that the water loads are ..... | | Similar Terms |
| 2578 |
| Unit column method (for buttress dam) | | It is a method of designing a buttress dam evolved by Herman Shorer. It is assumed that the buttress comprises a series of hypothetical curved struts that transmit the water load to the foundations by uniform axial compression without interaction between struts. The axes of the curved struts are analogous to trajectories of first principle stress i..... | | Similar Terms |
| 2593 |
| Similar Terms |
| 3225 |
| Tapoon, or Ponding method | | A method of measurement of seepage losses from canals when a selected canal section is segregated by dikes at each end. Seepage losses may be determined by measuring the inflow required to maintain the water level in the ponded section at a given level or by measuring volumetric loss from water surface area and rate of recession, due allowance bein..... | | Similar Terms |
| 4049 |
| `In and out` method | | A way of strengthening embankments, used generally in the low plains, that consists in constructing, parallel to the outside of the old embankments, additional embankments with connections between old and new embankments at calculated intervals. The two series of partitions thus formed on each bank are connected to the canal by inlets at their upst..... | | Similar Terms |
| 4295 |
| Resistivity method | | A geophysical method to determine the water-bearing character of the strata explored. It is based on the resistance to an electric current by the formations being tested...... | | Similar Terms |
| 4296 |
| Seismic method | | A geophysical method to determine the water-bearing character of the strata explored. It depends upon registering the comparative celerity of shock waves, and thus the densities, of the strata being investigated...... | | Similar Terms |
| 4319 |
| Jetting method of boring, or Hydraulic wash | | A method of well boring in which the material encountered is loosened by a strong current of water directed through a suitable nozzle or bit and is carried to the surface and removed by the return stream of water...... | | Similar Terms |
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