Earthquake Recording InstrumentDPWH compliant

Gecko SMA-HRAccelerograph

The law is on your side and for your protection.We are in the Ring of Fire.

The continuous occurrence of recent earthquakes tells us how real this Ring is to us.

We have no control when they occur and we can only hope to mitigate calamities when they do.

Continue on Page 2

Authorised Distributor

From Multi-Line, three decades of building trust.

Through competitive pricing and quality.

10 reasons why Gecko SMA-HR offers the most effective protection in the event of earthquakes1. Each Gecko SMA-HR is a stand-alone

accelerograph. It has its own back-up battery and integral data logger for continued operation and recording of data in the event of power outages or disconnection of cable, ensuring redundancy and reliability of each instrument.

2. It has a built-in earthquake information display panel to easily view peak intensity, instrument health, and settings anytime without a laptop or hand-held device.

3. It provides real time data on ground movement acceleration, seismic intensity scale and SI value in a velocity response spectrum for continuous monitoring and recording of events.

4. It operates with a tri-axial 3 directions (X, Y and Z axes), offering the most accurate and reliable technology in seismic monitoring.

5. It has 2-output alarm and shut-off mechanism. Each alarm channel can have individual setting

or trigger levels for activating external alarm from fire alarm systems or PA systems and for shutting off elevators, electrical lines, water lines, fire doors, cooling towers, etc..

6. It is IP67 waterproof and dust proof.

7. It provides a local audible alarm when earthquakes occur.

8. It has a fault-detecting alarm that gives off alert in the event of abnormalities in data storage, power and temperature alerts.

9. It can automatically send email alerts to desired addresses. Viewing may also be done remotely though smart phones and computers.

10. Gecko SMA-HR complies 100% with DPWH regulation on Earthquake Recording Instrumentation for Buildings, unlike many brands in the market today.

The law is on your side and for your protectionFor this reason, the government requires the installation of Earthquake Recording Instrumentation in new and existing buildings.

When you happen to be in malls, hospitals, schools, hotels, airports, high-rise buildings and industrial facilities and earthquakes shake them from side to side, you will appreciate the need for the government to be on your side.

Saving lives, protecting property and providing order in the event of earthquakes are the reasons for installing seismic accelerographs in structures where large number of people congregate.

As the end of the year approaches, property managers and owners must be made aware of the requirements of the law.

For existing buildings within specified areas in Table 1 of the Rule, the installation and operation of these seismic accelerographs will form part of the requirements of the Annual Certificate of Inspection to be issued by the Building Official of the city or town where these buildings are located.

According to law, the Annual Certificate of Inspection is a requirement in the application for annual Business Permits at the start of every year.

For newly constructed buildings the law says, “the installation of these instruments shall form part of the requirements for Certificate of Occupancy issued by the Building Official, indicating there on Earthquake Instrument Notification Procedures in Compliance to the guidelines and rules.”

Continued from Page 1

Authorised Distributor

The manufacturer - ESS Earth Sciences Pty Ltd

Pictures showing earthquake destruction in Pampanga on April 22, 2019

ESS Earth Sciences Pty Ltd is an advanced technology company based in Australia, specialising in monitoring systems in the fields of seismology, geotechnical engineering, hydrology, and other environmental monitoring applications.

The Seismology Research Centre (SRC), an earthquake observatory established in 1976, joined ESS Earth Sciences in 2002.

The SRC has been active in the Philippines since completing a major project to improve the PHIVOLCS national earthquake monitoring network. The project involved upgrading the 34 stations from analogue to digital instrumentation using SRC’s 4th generation D-series seismographs.

Designed by seismologists, the 7th generation Gecko is used throughout the Asia-Pacific region and beyond.

Gecko SMA-HRAccelerograph

Clark International Airport Chuzon Supermarket

Actual seismic wave recording of 6.1 magnitude earthquake in Luzon (April 2019).

Authorised Distributor

Republic of the PhilippinesDepartment of Public Works and HighwaysOffice of the SecretaryNBCDP Memorandum Circular No. 01Series of 2015, March 12, 2015

Subject : Guidelines and Implementation Rules on Earthquake Recording Instrumentation for Buildings

IV. Earthquake Recording Instrumentation Requirements

2. Instrumentation of Selected Building

All owners of existing buildings listed in Table 1 shall provide accessible seismic instrumentation room for the installation of appropriate earthquake recording instruments. Location of said instruments shall be determined by a Civil/Structural Engineer.

For proposed buildings, the Civil/Structural Engineer shall include the layout, installation requirements, and location of the instrument in the structural plan submitted for building permit purposes.

The actual installation of the instruments shall be under the supervision of the Certified Civil/Structural Engineer verified and confirmed by the Building Official.

For existing buildings, the installation and operation of these instruments shall form part of the requirements of the Annual Certificate of Inspection issued by the Building Official.

Owners of existing buildings with already installed Earthquake Recording Instrumentation (ERI) shall be notified by the Building Official to comply with these guidelines accordingly, in case the specifications of the ERI installed do not conform as prescribed in these guidelines. However, the jurisdiction of the annual inspection shall be limited only on reporting the existence of the seismicinstruments in a building, detailed installation number, latest certification of the local building official and a narrative physical condition as it was found by the Building Official.

For newly constructed buildings, the installation of these instruments shall form part of the requirements for Certificate of Occupancy issued by the Building Official, indicating there on Earthquake Instrument Notification Procedures in Compliance to these guidelines and rules.

Mandatory Installation of EarthquakeRecorders for Buildings

Gecko SMA-HRAccelerograph

Table 1. Seismic Instrumentation Requirements. In Compliance with DPWH IRR

Gecko SMA-HR Technical SpecificationsAccelerometer• Triaxial Force Feedback type• ±2g full scale range• DC to 100Hz bandwidth• Self noise <1μg over full bandwidth

Recorder• 3-channel with simultaneous sampling• Input voltage range matched to accelerometer• User-selectable sample rates of 40, 100, 200, 250,

400, 500, 800, 1000, 1600, 2000 and 4000 samples per second

• 32-bit ADC per channel• Dynamic range of 137dB @100sps, 130dB @500sps• Gain options of x1, x2, x4, etc ...up to x512• MiniSEED continuous data recording to ring buffer• 32GB SD card included (larger cards supported)• Internal GPS receiver for 100 micro-second timing

accuracy• Trigger logging using level and STA/LTA ratio threshold

settings• Alarm output on Level trigger threshold exceedance

Inputs• LCD and 4-button keypad user interface - no laptop

required• Coaxial GPS aerial connection• 2-pin power socket (for battery charger)

• 6-pin alarm/communication socket (for alarm output and Ethernet)

Outputs• Continuous MiniSEED format data to SD card• Seismic trigger alert (alerts from STA/LTA or Level

triggering routines)• Instrument alert (alerts on power, temperature, and

memory)• Data streaming over Ethernet to Live Stream software

Physical (SMA-HR only)• Diameter: 135mm• Height: 210mm (including legs and levelling bubble)• Weight: 3.1kg (including internal battery)• Protection: IP67 (dustproof, waterproof)• Power: <2W typical

Accessories(included in structural monitoring bundle)• Ethernet adaptor, alarm relay and internal battery

charge regulator• 100-240V 50/60Hz AC power supply with and 12V DC output• M8 DynaSet drop-in anchor & punch• 10mm masonry bit• 210mm M8 threaded rod with lock nut• Wave - free seismic waveform analysis software

(downloadable)

Mandatory Installation of Earthquake (Continuation)

Gecko SMA-HR Compliance WithDPWH Specification Requirements

1.

2.

3.

4.

5.

6.

7.

8.

9.

1.

2.

3.

4.

5.

6.

1.

1.

1.

1.

2.

2.

2.

3.

3.

10.

11.

12.

Seismic qualified as tested by recognized international testing laboratory

Sampling Frequency : Minimum of 100 samples per second

Equipped with internal battery back-up power to ensure continuous operation during a power fluctuation.

Continuous Recording: capable of continuous recording

Provides real-time alarm information (either audio, visual or both) during an earthquake event.

Media: Memory Card

Stores seismic activity information as gathered by the attached accelerometer

Time: From at least 20 seconds before the ground shaking begins until 30 seconds after the last triggering level motion

Minimum design life: 10 years and should be demonstrated and certified to have a 40,000-hour (minimum) mean time between failures

AD Converter : 16 bits

Interval: Half a second or less

Accuracy: Plus or minus 0.2 second per 100 seconds

Type : GPS or NTP Server

Equipped with fault detection

RMS Noise: System noise shall be less than 40µg measured over 0-30 Hz

Minimum of three components (vertical, longitudinal and transverse)

Natural Frequency: Above 50 Hz

Damping: Approximately 60-70 percent critical

Sensitivity: 2g

Method: Pendulum or other device using earthquake motion as an exciting force

Bandwidth: DC to 100 Hz

Level: Accelerograph: 0.5 to 100 gals nominal velocitimeter: 5 μm/s to 1 mm/s

Battery maintained by charger

Ethernet: 10 base –T or 100 base-TX

Protocol: TCP/IP FTP/SFTP

Environment: IP 67

Time: Full operation of accelerograph/velocity in not over 0.1 second after activitation.

A. Accelerograph

B. Recording

C. Timing

D. Triggering

E. Power

F. Communication

DPWH Guideline Specification

Performance tested by University of Technology Sydney, University of Melbourne, CE certified

Sampling rates up to 4000 samples per second available

Real-time alarm output to relay circuit during earthquake can be connected to audio/visual device

Media: 32GB SD Memory Card standard

Records triaxial data from integrated accelerometercontinuously to SD card storage

Data is stored continuously before and after trigger time

Lowest spurious resonance >450Hz

Force feedback sensors have critical damping (100%)

Sensitivity is 5V/g with ±10V range, giving ±2g range

Force feedback circuit. Earthquake motion providesexcitation

Bandwidth is DC to 100 Hz

Level triggering for accelerograph any value from 0.2 to1980 Gal

Battery maintained by AC charger

Ethernet adaptor and cellular network modems available

TCP/IP used for data telemetry over Ethernet/cellular

Compliant with IP67 for dust and water ingression

Full recording operation 100% of time, regardless of trigger activation

Internal battery available (large battery pack in SMAenclosure recommended for serviceability and testing)

Continuous recording is always enabled

Designed for minimum 10 year operation. Kelunji SMAsused in structural monitoring have operated for over 20years, producing an aggregate MTBF of greater than 5 years

AD Converter: 32 bits

Data storage interval at 100sps is less than 0.5 seconds

Time accuracy: 0.00001 seconds, synchronised every second

GPS used for timing and position

Three orthogonally aligned accelerometer components (vertical, longitudinal and transverse; East, North, Up)

Fault detection - SD card full/error, power, temperature

Measured full spectrum noise is less than 1μg over 0-100 Hz (less than 0.5μg RMS noise over 0-30Hz)

Gecko SMA-HR

Compliant Non-Compliant

Yes. ISO, JQA, CE

Yes

Yes. Records intensity history values

No. Only 0.1s (10Hz)

No. Only 2-30%

No. 5.1g range, means less resolution at 2g

No. Measurement range only 0.3 to 10Hz

No

No

Yes. Sensor only

Yes

Yes

Yes

Yes

Yes

Yes

No. Data sheet does not indicate that it can record time series of ground shaking

Yes

Yes

Yes

Yes

No. No waveform recording features

Yes

Yes

No. Clock can drift 6 seconds per day. Not accurate at all

No. No mention in spec sheet, unlikely

No. 0.1 gal is >100µg, only 10Hz

Other leading brand 1

Authorised Distributor

Gecko SMA-HRAccelerograph

Gecko SMA-HR Compliance...(Continuation)

Not specified

Yes

No internal alarm

Yes

Yes. CF card

Yes

Yes

Not specified

Yes

Servo accelerometer

Yes

Yes

No internal battery main powered only

Yes

Yes

No. IP65 only

Not specified.

Yes. 90 minutes

Yes

Not specified

Yes

Not specified

Yes

Yes

Yes

Not specified

No. Servo-type sensor not compliant.

Non-Compliant

Other leading brand 2

Non-Compliant

Not specified

Yes

Yes

Yes

Not specified

No. Only +1g to -3g in vertical

Yes

No

Yes

Yes

Yes

Not specified

Yes

Not specified

Yes

Yes

Not specified

Yes. MEMS - insensitive at low frequencies

Yes

Yes

Not specified

No

Yes

Not specified

Not specified

Yes

No. 0.1 gal = 102µg

Other leading brand 3

Not specified

Yes

No. Not specified

Not specified

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

No. UDP/IP or HTTP only

Yes

Yes

No. No internal battery option

Yes

Yes

Yes

Yes

Yes

PTP, not NTP

Yes

No. Not specified

Yes

Other leading brand 4

Non-Compliant

Yes

Yes

Yes

Yes

No. MEMS sensor

Not specified

Not specified

Not specified

Not specified

Yes

Yes

Yes

Yes

Yes

Not specified

No. SSD (not removable)

Not specified

Yes

Not specified

Yes

Not specified

Yes

Not specified

Not specified

Not specified

Not specified

No. Not capable of 40µg to 2g

Other leading brand 5

Non-Compliant

Quezon City: ( 410-1155, 929-9911 • Cebu: ( 346-5413 • Davao: ( 282-8606inquire@multi-linegroup.com • www.multi-linegroup.com

Authorised Distributor

For high rise buildings (above 50 meters in height) the DPWH Guidelines require installation of at least three accelerographs located at ground floor or lowest basement, middle floor and floor below roof.

The actual recording of the magnitude 6.3 Luzon earthquake of 11 August 2017, recorded in the basement and on the 10th floor of a building located about 75km from the earthquake epicentre. Recordings show that the peak horizontal acceleration on the 10th floor was almost 4x higher than the input ground motion recorded in the basement.

The Gecko Accelerograph can be readily connected to the LAN for live data streaming and it may also be connected to the internet for remote monitoring and data archiving. The seismic alarm outputs may be connected to building public address system, fdas, building management system, elevator controls, gas line automatic shut-off, etc. for mitigation of secondary disasters.

Wave Software Showing Earthquake Waveform

Installation in High Rise Building

Schematic Diagram

Public Address System

Fire AlarmSystem

ElevatorControl

Gas/Water lines AutomaticShut off

Bldg. LANor Internet