Term No. | Term Name/Term Description | Action |
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2334 |
Steel dam | A dam built of steel deck supported on inclined steel struts. There are two general types of this kind of dam : (i) direct strutted steel dam wherein the load is transferred from the deck to the foundations through the inclined struts; (ii) cantilevered steel dam consisting of variations of the direct strutted type where the section of the bend sup..... | | Similar Terms |
2335 |
Gravity dam, Solid gravity dam, Curved gravity dam, or Gravity arch dam | It is customary to confine the term `gravity dam` to solid masonry or concrete dams that resist their imposed loading by the weight of the structures themselves. However, if the dam is sufficiently curved upstream in plan for its entire length, a portion of the imposed loading may be borne by arch action such dams are called `gravity arch dams`...... | | Similar Terms |
2336 |
| Similar Terms |
2337 |
Buttress dam | A dam usually of reinforced concrete, consisting of upstream face or deck and buttresses. The water bearing members (upstream face or deck) are supported upon the buttresses and span between them. The load is tranferred to the foundations through the buttresses...... | | Similar Terms |
2341 |
Flat slab buttress dam, Flat deck dam, Deck dam, Slab and buttress dam, ,Fixed slab buttress dam, Fixed deck dam, Free deck dam, or Cantilever buttress dam | A dam usually of reinforced concrete consisting essentially of slabs supported by transverse buttresses. The load is taken by the slabs and transferred to the foundations through the buttresses. The slab may be (i) integrally cast with the buttresses, (ii) freely supported at the buttresses, or (iii) cantilevered from the buttresses. The dams are a..... | | Similar Terms |
2342 |
Truss buttress dam | A type of deck dam where the massive buttresses are replaced by reinforced concrete trusses to support the deck slab. | | Similar Terms |
2343 |
Columnar buttress dam | A type of deck dam when the massive buttresses are replaced by a series of inclined columns. | | Similar Terms |
2344 |
Multiple arch-buttress dam | A type of buttress dam, consisting of a series of arch barrel segments supported by buttresses. The load is transferred by the several arches to the foundations through the buttresses...... | | Similar Terms |
2345 |
Deckless buttress dam, Massive head buttress dam | A type of buttress dam when the face slab is replaced by flaring the upstream edges of the buttresses to span the distance between buttress walls. The flaring portion of the buttress (head) may be of various geometrical shapes, viz. (i) massive head, (ii) round head or mushroom head, (iii) diamond head. The buttress dams comprising types of head cl..... | | Similar Terms |
2346 |
Multiple dome buttress dam | A modification of a multiple arch dam, with a large dome-shaped structure between the buttresses (illustrated). | | Similar Terms |
2347 |
Cupola dam | It is a type of buttress dam having the upstream face in cupola shape. | | Similar Terms |
2348 |
Hollow dam | A modification of buttress dam where the buttresses are grouped or joined together, leaving hollow spaces in between such as Dixence dam (Switzerland) (illustrated)...... | | Similar Terms |
2349 |
Conoidal dam | A dam that can be considered to have been formed by the juxtaposition of a certain number of blocks. The geometrical definition is as follows: The upstream face is a plane, slightly inclined to the vertical, the downstream face is a conoidal surface generated by straight lines, when they touch the horizontal at the crest they are orthogonal thereto..... | | Similar Terms |
2350 |
Prestressed dam | A concrete dam placed in compression with high tensile iron bars/weirs placed in holes/shafts in the body of the dam in the upstream portion anchored in the foundation and stretched from the end of the bar/wire at the top of the dam and encasing them with concrete in these holes/shafts. Thus, these post-terminated bars lend a pre-loading compressiv..... | | Similar Terms |
2351 |
Arch dam, Arched dam, or Massive arch dam | An arch dam is a solid concrete or masonry dam curved upstream in plan whereby, in addition to the resisting a part of the pressure of the reservoir by its own weight, it is not only able to resist the reservoir pressure due to own weight but also acquire a large measure of stability by virtue of transmission of the part of water pressure or load b..... | | Similar Terms |
2352 |
| Similar Terms |
2353 |
Constant angle arch dam | A type of arch dam wherein all the arch rings have a constant value of central angle (illustrated). | | Similar Terms |
2354 |
| Similar Terms |
2355 |
Arch dam in series | A series of arch dams placed one after the other in descending heights, the space between successive arches is filled with water to the level of the crest of the lower arch; thus limiting the pressure on each arch in proportion to the difference in height of the two successive arches, consequently the arches would be of constant thickness. This eff..... | | Similar Terms |
2356 |
| Similar Terms |
2360 |
Hydraulic fill dams | An earthfill dam in which the fill is excavated, transported and placed in the dam by dredging, sluicing or pumping during construction. The fines are generally segregated and deposited towards the centre of the dam for greater imperviousness...... | | Similar Terms |
2361 |
Semi-hydraulic fill dam | An earth dam built by transporting the material on to the dam and placed within the section of the dam by means other than water although some of the material is moved into its final position by the action of water...... | | Similar Terms |
2363 |
| Similar Terms |
2364 |
Homogeneous earth dam | An earth dam composed of a single type of material except for the protective material on the exposed faces. | | Similar Terms |
2365 |
Modified homogeneous earth dam | An earth dam, wherein small amounts of selected pervious materials are carefully placed on an otherwise homogeneous dam to control the action of seepage...... | | Similar Terms |