Abrégé

Provided are a system and method which can accurately manage the incline of a straight pile and an inclined pile without using two surveying machines and without using an inclinometer. A system (1) for providing information to an operator of a pile driver (10) in order to control the pile-driver (10) for pile-driving a pile (101) having a major axis (109) into the ground is provided with: a first means (14) for acquiring first data relating to the gradient of the pile (101), in a first coordinate system; a second means (16) for exchanging the first data with second data in a second coordinate system defined by at least 2 points (Pl, Pr); and a display means (17) for displaying the incline of the pile (101) in a second coordinate system on the basis of said second data.

Classes IPC  ?

• E02D 13/06 - Accessoires pour la mise en place ou l'enlèvement de pieux ou de rideaux de palplanches pour la surveillance pendant la mise en place
• E02D 7/16 - Charpentes pour sonnettes

Abrégé

Supporting-member mounting sections (95, 395, 396, 499, 595, 695) which are holes or grooves are formed in legs (40) of a tripod (10, 210, 310, 410) or in separate members (92, 192, 292, 492) mounted to the legs (40).  Supporting members (82, 182, 282, 382, 482, 582, 682) fitted in the supporting-member mounting sections (95, 395, 396, 499, 595, 695) are arranged so as to extend from the supporting-member mounting sections (95, 395, 396, 499, 595, 695) toward the ground surface in a direction in which the tripod is likely to topple over.  Simple operation can reliably prevent toppling over of the tripod.

Classes IPC  ?

• G01C 15/00 - Instruments de géodésie ou accessoires non prévus dans les groupes
• F16M 11/32 - Soubassements pour supports avec trois pieds télescopiques ou plus

Abrégé

An optical device for accurately and quickly measuring the state (such as flexure) of a cylindrical pole such as an electric pole or a column. The optical device (10) has a telescope (16) with a projection plate (46). On the projection plate (46), a reference scale (50) including circumferentially continuous or generally continuous circles (51) whose centers are on the center axis (18) of the telescope (16) or a reference scale (50) where at least arcs (51') whose centers are on the center axis (18) of the telescope (16) are arranged left-right symmetrically with respect to the center axis (18) is provided.

Classes IPC  ?

• G01C 15/00 - Instruments de géodésie ou accessoires non prévus dans les groupes