| 释义 |
▪ I. precast, a.|ˈpriːkɑːst, -kæst|
[pre- A. 1.]
a. Formed by casting before being placed in position; composed of units so made.
b. Pertaining to or involving such a process.
1914C. E. Fowler Pract. Treat. Sub-Aqueous Foundations xxvii. 553 The use of pre-cast piles for permanent construction at a reasonable cost is an ideal type. 1927Daily Express 2 Mar. 3/6 The Concrete Products Association was formed yesterday to improve production..of ‘pre-cast’ units in building. 1932Dowsett & Bartle Pract. Formwork & Shuttering ii. 28 A series of rolled steel filler joists arranged to carry a pre-cast floor. 1934Archit. Rev. LXXV. 15/2 The floor is in pre-cast rose and green terrazzo tiles. 1960Times 6 Oct. 7/4 It may be possible to make such roofs in plastic by precast methods. 1975Princ. Quality Concrete (Portland Cement Assoc.) ii. 31 British engineers were experimenting with precast residential structures as early as 1905. Following World War II, precast construction became a permanent part of the European building trades.
▪ II. preˈcast, v.1 rare.
[pre- A. 1.]
trans. To cast or calculate beforehand; to forecast. Hence preˈcasting vbl. n.
1863H. Jennings Rosicrucians I. 257 The conviction that their divulgement [of future events], as the precasting of God's purposes..is disallowed.
▪ III. precast, v.2|priːˈkɑːst, -kæst|
[pre- A. 1.]
trans. To cast (an object, or concrete) before it is placed in position. Also absol.
Some passive uses are not distinguishable from a predicative use of precast adj.
[1929W. C. Huntington Building Construction iii. 71 Concrete piles may be precast or cast-in-place.] 1938Wentworth-Shields & Gray Reinforced Concrete Piling ix. 81 The use of concrete piles which, instead of being pre-cast, are made by forming a hole in the ground and filling it with concrete..is steadily extending. 1950Archit. Rev. CVII. 333/3 A large contract, where much of the work can be precast at the site. 1956Nature 4 Feb. 200/1 The art of precasting concrete has given rise to an established industry. 1974A. Hodgkinson AJ Handbk. Building Struct. v. 167/2 The more difficult the in situ formwork problem, the easier is the decision to precast. 1975Princ. Quality Concrete (Portland Cement Assoc.) ii. 31 Since its discovery concrete has been used to precast specialty items.
So preˈcasting vbl. n.
1938C. E. Reynolds Concrete Construction xi. 484 Where unskilled labour and only a minimum of supervision are available pre-casting may allow the manufacture of the members to be localised and carried out under more convenient conditions. 1974A. Hodgkinson AJ Handbk. Building Struct. v. 167/2 A quite different reason for precasting in certain parts of the uk is the local attitude of carpenters and steel fixers which may cause the contractor to limit absolutely the number of employees on site. |