Table 7. Simulated pre-monitoring value... | Emerald Publishing

Table 7.

Simulated pre-monitoring value assessment matrix (Ferriby Road Bridge)

	Question	Very unlikely or not at all	Not likely	Neutral i.e. may or may not occur	Likely	Very likely/certain	Comments
	Question	1	2	3	4	5	Comments
SHM engineer	How likely is it that the required accuracy of the proposed measurements can be ascertained?			X			10-bit analogue to digital converter (ADC) for crack widths – datasheet available for linear potentiometric displacement transducer (LPDT) LPDTs, 16 bit ADC for inclinometer – inclinometer data available. No calibration done on integrated sensors.
	How likely is it that the specified system can be designed to be sufficiently robust such that it can be maintained over the life of the monitoring project?			X			This was a research system with some consideration made for packaging of sensors and the need to change batteries for wireless sensors was identified.
	How likely is it that the appropriate auditing will be conducted by a third party to certify that the gathered data are reliable? (For example, monthly reports that give details of calibrations undertaken and ‘sanity checking’ of collected data.)		X				Some data were measured (see Hoult et al., 2010), but little or no external auditing was done in part due to the nature of the project (research).
Structural engineer	How likely is it that relevant values of appropriate threshold values will be assigned in consultation with the asset owner so as to ensure that the owner will act if these values are realised in the field?	X					No sensible threshold available or decided upon.
	How likely is it that the critical monitoring locations on the structure can be determined?		X				Crack width sensor positions determined by looking for suitable cracks to monitor. Only three cracks were monitored with no way of knowing if these locations were critical.
	How likely is it that the data be used for validation (or falsification) of structural models which may assist with the design of more efficient future structures for the asset owner?				X		The data may be used to study bearing performance.
Owner/Asset manager	How likely is it that the necessary actions (or decisions) will be taken if threshold (trigger) values are exceeded/reached?	X					No sensible thresholds available or decided upon.
	How likely is it that the data to be collected will be able to inform a maintenance regime?	X					Research study and no direct link (or explicit) link to the bridge maintenance regime.
	How likely is it that there will be a secure budget necessary for the intended period of operation of the monitoring project?				X		Budget was available for the research project stage but not long-term.
Average		2·3					Project may yield value to the asset owner/manager.

	Question	Very unlikely or not at all	Not likely	Neutral i.e. may or may not occur	Likely	Very likely/certain	Comments
	Question	1	2	3	4	5	Comments
SHM engineer	How likely is it that the required accuracy of the proposed measurements can be ascertained?			X			10-bit analogue to digital converter (ADC) for crack widths – datasheet available for linear potentiometric displacement transducer (LPDT) LPDTs, 16 bit ADC for inclinometer – inclinometer data available. No calibration done on integrated sensors.
	How likely is it that the specified system can be designed to be sufficiently robust such that it can be maintained over the life of the monitoring project?			X			This was a research system with some consideration made for packaging of sensors and the need to change batteries for wireless sensors was identified.
	How likely is it that the appropriate auditing will be conducted by a third party to certify that the gathered data are reliable? (For example, monthly reports that give details of calibrations undertaken and ‘sanity checking’ of collected data.)		X				Some data were measured (see Hoult et al., 2010), but little or no external auditing was done in part due to the nature of the project (research).
Structural engineer	How likely is it that relevant values of appropriate threshold values will be assigned in consultation with the asset owner so as to ensure that the owner will act if these values are realised in the field?	X					No sensible threshold available or decided upon.
	How likely is it that the critical monitoring locations on the structure can be determined?		X				Crack width sensor positions determined by looking for suitable cracks to monitor. Only three cracks were monitored with no way of knowing if these locations were critical.
	How likely is it that the data be used for validation (or falsification) of structural models which may assist with the design of more efficient future structures for the asset owner?				X		The data may be used to study bearing performance.
Owner/Asset manager	How likely is it that the necessary actions (or decisions) will be taken if threshold (trigger) values are exceeded/reached?	X					No sensible thresholds available or decided upon.
	How likely is it that the data to be collected will be able to inform a maintenance regime?	X					Research study and no direct link (or explicit) link to the bridge maintenance regime.
	How likely is it that there will be a secure budget necessary for the intended period of operation of the monitoring project?				X		Budget was available for the research project stage but not long-term.
Average		2·3					Project may yield value to the asset owner/manager.