System and approval method, information acquisition system and information acquisition method, shape acquisition system and shape acquisition method, and monitoring method

A system used in construction of a structure, comprising:

• a plurality of sensor devices attached to a part of a structure as a target object such that tilt angle information of the target object is acquired at each of a plurality of points that are different in position with respect to at least a first direction;
• a management device that calculates shape information of the target object based on measurement information of the target object by the plurality of sensor devices, wherein
• each of the plurality of sensor devices has an angle sensor, and transmits the measurement information to the management device via a network, and
• the management device provides the calculated shape information via the network to a terminal device used in design or construction of the structure.

A method of constructing a structure, the method comprising:

• acquiring tilt angle information, by using a plurality of sensor devices, of a target object at each of a plurality of points that are different in position with respect to at least a first direction;
• transmitting measurement information of the target object measured by the plurality of sensor devices to a management device via a network;
• calculating shape information of the target object based on the measurement information;
• and
• providing the calculated shape information via the network to a terminal device used in design or construction of the structure, wherein
• each of the plurality of sensor devices includes an angle sensor.