Abstract: An optical fiber-embedded PC steel strand includes a PC steel strand in which a plurality of PC steel wires are twisted together, and an optical fiber. The optical fiber is fixed with a resin in a twist groove that is a groove between two PC steel wires of the PC steel wires, the two PC steel wires being disposed at an outer surface of the PC steel strand and being next to each other. A coefficient of variation in distance between a common tangent of the two PC steel wires that form the twist groove and are next to each other, and a center of the optical fiber is 0.5 or less, as measured in 10 cross sections of the PC steel strand that are perpendicular to a longitudinal direction of the PC steel strand.

Abstract: This anchor support tool supports an anchor provided in a foundation, the anchor support tool comprising: a support plate having at least one support part for supporting an anchor; a spacer for positioning the support plate with respect to a form of the foundation in the height direction; and a fixing jig for fixing the support plate to the form. The fixing jig supports the support plate while the support plate is disposed above the form with the spacer therebetween.

Abstract: This foundation construction method for a building includes: a first step for creating a foundation base; a second step for installing reinforcement on the foundation base; a third step for installing a frame for creating a foundation to be provided to the foundation base; a fourth step for arranging a plurality of anchors so as to follow the inner periphery of the frame; and a fifth step for placing concrete inside the frame. In the fifth step, the concrete is leveled such that the upper surface of the concrete is the same height as the upper end surface of the frame.

Abstract: An anchor support member supports an anchor bolt provided to the foundation of a building, and comprises: an attaching part that is attached to a formwork of the foundation; a retaining part that is connected to the attaching part and retains the anchor bolt; and a securing part that secures the attaching part to the formwork. The securing part secures the attaching part to the formwork such that the position of the anchor support member can be adjusted in a prescribed direction.

Abstract: An anchorage for gripping and fixing an end portion of a tendon is provided. The anchorage includes a base having a surface; and a coating film provided at least on a contact portion of the surface of the base. The contact portion contacts the tendon when the tendon is gripped by the anchorage. The coating film has an electrical resistivity of 104 Q·m or more.

Abstract: A light-weight formwork having a small change in dimensions due to an environmental temperature. A foundation formwork includes a metal frame having a rectangular frame shape, and a resin faceplate attached to the metal frame and closing an opening of the metal frame. The metal frame includes a top plate having fitting notches and L-shaped bridged bodies. The resin faceplate includes protruding bodies fitted with the fitting notches and L-shaped slits into which the bridged bodies are fittingly inserted. The protruding bodies fit with the fitting notches and the bridged bodies are fittingly inserted into the slits, thereby the resin faceplate is attached to the metal frame. The attached resin faceplate closes an opening of the metal frame. The fitting notches and the bridged bodies suppress an expansion and contraction of the resin faceplate in a left and right direction.

Abstract: A concrete structure includes a first concrete member, a second concrete member, a sheath that is disposed in a through hole extending from the first concrete member to the second concrete member, a tension part that is inserted over the entire length of the sheath and that is subjected to a tensile force, a fixing tool that fixes the tension part to the first concrete member or the second concrete member, and an anticorrosion part that covers the fixing tool. The tension part includes a stranded wire part and a first cover that covers an outer periphery of the stranded wire part. A space between the sheath and the tension part is not filled with a grout material.

Abstract: A coated PC steel stranded cable includes: a stranded cable in which a plurality of elemental wires each composed of steel are twisted together; an anti-corrosive coating having an outer circumferential portion that coats an outer circumference of the stranded cable; an outer coating that coats an outer circumference of the anti-corrosive coating; and an optical fiber provided at a position inwardly of an outer circumferential surface of the outer coating and corresponding to a strand groove in the stranded cable so as to follow expansion and contraction of the stranded cable.

Abstract: A concrete structure includes a first concrete member, a second concrete member, a sheath that is disposed in a through hole extending from the first concrete member to the second concrete member, a tension part that is inserted over the entire length of the sheath and that is subjected to a tensile force, a fixing tool that fixes the tension part to the first concrete member or the second concrete member, and an anticorrosion part that covers the fixing tool. The tension part includes a stranded wire part and a first cover that covers an outer periphery of the stranded wire part. A space between the sheath and the tension part is not filled with a grout material.

Abstract: To provide a concrete-reinforcing shaped body containing concrete-reinforcing fibers and having a plate-like shape. The concrete-reinforcing fibers each preferably have a diameter of 0.3 mm or smaller and a length of 5 mm or larger and 25 mm or smaller.

Abstract: A pregrouted PC steel material (10) includes a 19-wire-twisted PC strand (1), a pregrouted layer (2) disposed on an outer periphery of the PC strand (1), and a sheath (3) configured to cover an outer periphery of the pregrouted layer (2). A filling resin (4) is filled between steel wires (side wires) (1b, 1c, 1d). Since the filling resin (4) does not exude to the pregrouted layer (2) before tensioning of the PC strand (10), an operation of tensioning the PC strand (1) is not hindered by curing of the pregrouted layer (2). In contrast, since the gap between the steel wires is reduced when the PC strand (1) is tensioned, the filling resin (4) flows out (exudes) from between the steel wires to the pregrouted layer (2) to cure the pregrouted layer (2) only after the reduction.

Abstract: A coated PC steel stranded cable includes: a stranded cable in which a plurality of elemental wires each composed of steel are twisted together; an anti-corrosive coating having an outer circumferential portion that coats an outer circumference of the stranded cable; an outer coating that coats an outer circumference of the anti-corrosive coating; and an optical fiber provided at a position inwardly of an outer circumferential surface of the outer coating and corresponding to a strand groove in the stranded cable so as to follow expansion and contraction of the stranded cable.

Abstract: To provide a concrete-reinforcing shaped body containing concrete-reinforcing fibers and having a plate-like shape. The concrete-reinforcing fibers each preferably have a diameter of 0.3 mm smaller and a length of 5 mm or larger and 25 mm or smaller.

Abstract: A pregrouted PC steel material (10) includes a 19-wire-twisted PC strand (1), a pregrouted layer (2) disposed on an outer periphery of the PC strand (1), and a sheath (3) configured to cover an outer periphery of the pregrouted layer (2). A filling resin (4) is filled between steel wires (side wires) (1b, 1c, 1d). Since the filling resin (4) does not exude to the pregrouted layer (2) before tensioning of the PC strand (10), an operation of tensioning the PC strand (1) is not hindered by curing of the pregrouted layer (2). In contrast, since the gap between the steel wires is reduced when the PC strand (1) is tensioned, the filling resin (4) flows out (exudes) from between the steel wires to the pregrouted layer (2) to cure the pregrouted layer (2) only after the reduction.

Abstract: A vehicular navigation apparatus includes a control unit that sets a reachable area that is reachable by a vehicle, such that a remaining charge amount of a battery of the vehicle has a remaining charge amount above a quick charge threshold at the reachable area. The quick charge threshold is provided as a charge level of the battery that is required for a quick charge operation of the battery. The control unit further searches for a battery charge spot in the reachable area, and provides guidance to the battery charge spot. The control unit may further redefine the reachable area where a charge operation is scheduled, based on preferences provided by a user.

Abstract: A memory to store a state identifier showing whether or not to permit reading out an occurrence number of times of disk shifts from a disk storage unit is newly provided so as to intermittently change the identifier from a first state to a second state. When access requests to the disk unit are made, information showing the occurrence number of times of the disk shifts is read from the storage unit along with a data writing or reading operation to and from the storage unit. After a completion of reading the information, the identifier is returned from the second state to the first state. The identifier is changed from the first state to the second state with a determined time interval which is set longer than, for example, a minimum value of occurrence time intervals of the access requests.