Abrégé

In order to compensate for a decreased coefficient of friction, to improve quality and rigidity, and to avoid reduction in work efficiency, this deck plate (10), formed from a metal plate and suspended between beams, is provided, on one surface, with: ribs (1) which, spaced apart from each other, extend from one end to the other end in the direction of suspending; an end-closed part (3) where both ends of the ribs (1) are crushed in the direction orthogonal to the one surface; and uneven parts (4) which are formed on a flat part (2) between adjacent ribs (1).

Classes IPC  ?

• E04B 5/40 - Structures de planchers entièrement coulées sur place avec ou sans éléments de coffrage ou armatures avec des éléments de coffrage faisant partie du plancher avec des coffrages en forme de dalles servant en même temps d'armaturesDalles de coffrage avec armatures se prolongeant latéralement à l'extérieur de l'élément avec des plaques-coffrages métalliques

Abrégé

The present invention addresses the problem of providing a steel form that makes it possible to reduce labor or costs required to process or transport the steel form. This steel form 10 is a steel form 10 for forming a small beam 1, the steel form being provided with a pair of Z-steel bars 11. Each of the pair of Z-steel bars is provided with a bottom plate section 12 and a side plate section 13 extending upward from the bottom plate section 12. The bottom plate sections 12 have joint surfaces 16 for mutually joining the respective bottom plate sections 12 of the pair of Z-steel bars 11, and a groove section in which a small-beam concrete 20 can be poured is formed by means of the bottom plate sections 12 and the side plate sections 13 of the pair of Z-steel bars 11.

Classes IPC  ?

• E04B 1/16 - Structures formées à partir de matériaux en vrac, p. ex. de béton, coulés ou formés de façon analogue, sur place, avec ou sans emploi d'éléments additionnels, tels que coffrages permanents ou infrastructures à recouvrir du matériau porteur de la charge

Abrégé

The present invention addresses the problem of providing a steel-framed concrete beam and a construction method of the steel-framed concrete beam, which can reduce labor or costs required for separately installing a reinforcing member to form a through-hole. This small beam 1 is provided with: a steel frame 10 which has a bottom plate part 12 and a pair of side plate parts 13 that extend upward from both ends of the bottom plate part 12; and a small-beam concrete 20 which is poured into a groove portion formed by the bottom plate part 12 and the pair of side plate parts 13 of the steel frame 10.

Classes IPC  ?

• E04B 1/16 - Structures formées à partir de matériaux en vrac, p. ex. de béton, coulés ou formés de façon analogue, sur place, avec ou sans emploi d'éléments additionnels, tels que coffrages permanents ou infrastructures à recouvrir du matériau porteur de la charge

Abrégé

The purpose of the invention is to allow support for construction in large cross sections and to prevent a decrease in construction efficiency. A segment (5) constituting a submerged structure to be buried into the ground comprises an external piece (51) that forms an external wall of the submerged structure, an internal piece (52) that forms an internal wall of the submerged structure, and a coupling piece (53) that couples the external piece (51) and the internal piece (52). At least one of the external piece (51) and the internal piece (52) is formed from concrete.

Classes IPC  ?

• E21D 5/10 - Revêtement des puitsRevêtements à cet effet avec de la fonte ou de l'acier sous forme de cuvelages
• E02D 23/00 - CaissonsConstruction ou mise en place des caissons
• E21D 11/04 - Revêtement avec des matériaux de construction

Abrégé

A projection blackboard having both of an excellent blackboard function and an excellent screen function, and a process for producing the same. The surface enamel layer that is an outermost layer of the enamel layers is formed by using a enameling upper glaze wherein at least titanium oxide coated particles, or a titanium oxide glaze together therewith is blended into a transparent mat glaze, so as to render the layer an enamel layer having a predetermined color tone, a surface characteristic that the Rz is from 5 to 25 μm and a reflective characteristic that the peak gain is 0.28 or more, or having these properties and a glossiness Gs (75°) of 1 to 30%. This makes it possible to produce a blackboard excellent in both of blackboard function and screen function. The titanium oxide coated particles are preferably particles wherein surfaces of mica particles are coated with titanium oxide.

Classes IPC  ?

• B05D 3/02 - Traitement préalable des surfaces sur lesquelles des liquides ou d'autres matériaux fluides doivent être appliquésTraitement ultérieur des revêtements appliqués, p. ex. traitement intermédiaire d'un revêtement déjà appliqué, pour préparer les applications ultérieures de liquides ou d'autres matériaux fluides par cuisson
• B43L 1/04 - Tableaux noirs
• B43L 1/10 - Surfaces d'écriture de ces tableaux
• G03B 21/60 - Écrans de projection caractérisés par la nature de la surface

Abrégé

A projection blackboard having both of an excellent blackboard function and an excellent screen function, and a process for producing the same. The surface enamel layer that is an outermost layer of the enamel layers is formed by using a enameling upper glaze wherein at least titanium oxide coated particles, or a titanium oxide glaze together therewith is blended into a. transparent mat glaze, so as to render the layer an enamel layer having a predetermined color tone, a surface characteristic that the Rz is from 5 to 25 μm and a reflective characteristic that the peak gain is 0.28 or more, or having these properties and a glossiness Gs(75°)of 1 to 30%. This makes it possible to produce a blackboard excellent in both of blackboard function and screen function. The titanium oxide coated particles are preferably particles wherein surfaces of mica particles are coated with titanium oxide.

Classes IPC  ?

• B32B 15/04 - Produits stratifiés composés essentiellement de métal comprenant un métal comme seul composant ou comme composant principal d'une couche adjacente à une autre couche d'une substance spécifique
• B32B 15/18 - Produits stratifiés composés essentiellement de métal comportant du fer ou de l'acier
• B32B 15/20 - Produits stratifiés composés essentiellement de métal comportant de l'aluminium ou du cuivre
• B32B 18/00 - Produits stratifiés composés essentiellement de céramiques, p. ex. de produits réfractaires

Abrégé

⏧PROBLEMS] To provide a projection blackboard having both of excellent blackboard function and excellent screen function; and provide a process for producing the same. ⏧MEANS FOR SOLVING PROBLEMS] Among enamel layers superimposed on a metal substrate, the surface enamel layer as the outermost layer consists of an enamel layer of given color tone, 5 to 25 騜m Rz surface property and 0.28 or higher peak gain reflection property, optionally further 1 to 30% glossiness Gs (75º) produced from an enamel glaze composed of a transparent mat glaze blended at least with titanium oxide coated particles, optionally further with a titanium oxide glaze. Consequently, a blackboard having both of excellent blackboard function and excellent screen function can be obtained. The titanium oxide coated particles are preferably particles obtained by coating the surface of mica particles with titanium oxide. Moreover, the metal substrate is preferably a cold rolled steel sheet, an aluminum plated steel sheet or a Zn-Al alloy plated steel sheet.

Classes IPC  ?

• B43L 1/10 - Surfaces d'écriture de ces tableaux
• B43L 1/04 - Tableaux noirs
• G03B 21/60 - Écrans de projection caractérisés par la nature de la surface