P/N CM-DS-90200-00224EN VER 1.4 REV AUG 02, 2016PAGE 1 OF 2

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Data Sheet and User Instructions with Crack-Width Trend Chart

CRACKMON® 224R Crack-Width Comparator ACI 224R-01 Compliant for Reinforced Concrete (Inch and Metric Scales)

Features and Benefits• Conforms to ACI 224R-01 crack-width limits for reinforced concrete• Inch and metric rules measure wide cracks up to 2.5” and 50 mm • Pocket-sizedcrack-widthmeasurementgaugefitsinwalletandshirt-pocket• Unique 12-digit serial number ensures engineering and forensic traceability• Tough,flexiblepolyethylene(PETG)withstandsdailyfielduseandwillnotbreak• EngineeredandmadeintheUSAfrompremiummaterialsforenduringquality

User Instructions• Forcrackswidths0.140”(3.56mm)orless,placetopedgeofCRACKMON224Rovercrack• Positioncomparatoruntilthecrack-widthmatchestheactualcrack(interpolateifrequired)• UseCRACKMON224Rinchormetricrulescaleforwidercracksupto2.5”or50mm• PeriodicallyrecordresultsontheCrack-TrendChartonthereversesideofthisdatasheet• Forfastervisualmeasurementsonuptothreeaxes,documentchangesvs.timeusing

BuilderaCRACKMONcrackmonitorsandtheTRACARD3DCrackDocumentingSystem• Recorduniqueserialnumberandenvironmentaldataforengineeringtraceability

Typical Users• Building inspectors, superintendents• Civil,structuralengineers• Concrete, foundation contractors• Geotechnicalengineers,surveyors• Property owners, managers

Product DescriptionThe Buildera CRACKMON® 224R™ Crack-Width Comparator is ideal for measuring anddocumentingcracksinnewandexistingconcrete, masonry, wood or steel structures.

The comparator features both inch and metric scales plus 18 precision crack-widths for accurate and easy crack measurements. It also includes specific crack-widths setforth by the American Concrete Institute ACI 224R-01 recommended practice. The gauge slips easily into your wallet or pocket, and is excellent formeasuring initialcrackoffsetstogether with long-term monitoring using BuilderaCRACKMONcrackmonitorsandtheTRACARD®3DCrackDocumentingSystem.

Ordering Information

Model (Qty) UPC

CRACKMON® 224R (1) 816291010112

CRACKMON® 224R (50) Bulk 816291010167

Related Products

Model (Qty) UPC

CRACKMON® 4020A (1) 816291010259

CRACKMON® 4020A (3-Kit) 816291010006

CRACKMON® 4020A (18-Kit) 816291010013

CRACKMON® 5020AV (1) 816291010389

CRACKMON® XL 15040A (1) 816291010440

CRACKPOINT™ 90ti (10) 816291010310

CRACKPOINT™ TR50ti-Kit 816291010334

Engineering Specifications

Parameter Specification

Gauge Dimensions 3.4”x2.1”(8.6x5.4mm)

Standards ACI 224R-01 Compliant

Crack Widths (in) Min.±0.001”typical accuracy

.004,.006,.007,.008,.010,

.012,.014,.016,.020,.025,

.030,.040,.050,.060,.080,

.100, .120, .140

Crack Widths (mm) Min.±0.025mmtypical accuracy

0.10, 0.15, 0.18, 0.20, 0.25, 0.30,0.35,0.41,0.51,0.64,0.76,1.02,1.27,1.52,2.03,2.54,3.05,3.56

Rules (in / metric) 0-2.5” / 0-50 mm

Diff. Settlement ±15ºin5ºincrements

Material PETG(0.030”/0.76mm)

Max Temperature Storage<122ºF(50ºC)

CoE 51μm/m-ºC

Gauge Color Crystal-clear transparent

Markings (Ink) Heavy-dutyUV-cured

Traceability Unique 12-digit serial no.

Environmental 100% recyclable

Country of Origin MadeinUSA

CRACKMON® 224R Crack-Width ComparatorContactBuilderaforcustomversionswithyourlogo.

P/N CM-DS-90200-00224EN VER 1.4 REV AUG 02, 2016PAGE 2 OF 2

SCAN QR CODE WITH MOBILE PHONE FOR DETAILED ONLINE DOCUMENTATION AND ORDERING INFORMATION

BUILDERA | 570 EL CAMINO REAL STE 150-415 | REDWOOD CITY, CA 94063-1262 | USAWWW.BUILDERA.COM | US TOLL-FREE 1-(888) 888-3111 | INTERNATIONAL +1 (650) 587-6738

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Chart Instructions

1. UseoneormoreCRACKMON224R Crack-Width Trend Charts per unique crack- measurement location.

2. Markdatawithadark-blue(35003)orblack(35001/13801)Extra-Fine-PointSharpie®PermanentMarker.

3. UseCRACKMON224Rtomeasure crack width. Follow instructions supplied with the crack-width comparator.

4. Transfer crack-width measurement to table below.

5. Documentenvironmentaldata in table to assist with crack-movementforensicanalysisovertime.

6. For each new measurement event,transfercrackwidthfromtabletograph.Drawa small circle at the X-Y intersectionoftheEventandCrack Width. For dry soil conditions, draw an open circle. For damp or wet soil, drawasolid-filledcircle.

7. Connect adjacent dots (circles)onTrendChartwithastraightlinetovisualizecracktrendsovertime.NotethattheY-axisscaleisnonlinear,withveryfineresolutionforsmall cracks and increasingly coarse resolution for larger cracks.

8. Observepatternsrelatingcrack-width changes to variationsintemperature,humidity, freeze-thaw cycles, soil moisture, and seismic activity.Thisinformationassists structural forensics and remedies.

9. For better correlation, use a long-probe soil moisture meter(24”orlonger)tomeasure soil moisture near the position of the crack. Thisreducessubjectiveassessment of soil moisture conditions.

inches (mm).140 (3.56).120 (3.05).100 (2.54).080 (2.03).060 (1.52).050 (1.27).040 (1.02).030 (0.76).025 (0.64).020 (0.51).016 (0.41).014 (0.35).012 (0.30).010 (0.25).008 (0.20).007 (0.18).006 (0.15).004 (0.10)negligible

Water-retaining structures1

Seawater; wetting & drying1

Deicing chemicals1

Humidity, moist air, or soil1

Dry air or protective membrane1

Load transfer (pavement slab)2

Homeowner warranty 1/8”(3.2 mm)3

Measurement Event Number (Time)

Homeowner warranty 1/16”(1.6 mm)3

BUILDERA CRACKMON® 224R CRACK-WIDTH TREND CHART

Crac

k W

idth

(CRA

CKM

ON®

224R

) – N

onlin

ear S

cale

1ACI 224R-01 Table 4.12Colley and Humphrey

3Non-structural up to 1/8” (3.2 mm)

© 2015-2017 Buildera | All Rights Reserved | www.buildera.com/charts

Event # Date Location ID Crack Width Temp Humidity Soil Moisture Season Event Notes Inspector CRACKMON® SN

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Client / Job Site: __________________________________________________ Company / Work Order: __________________________

Approver Name: ________________________ Approver Signature: _________________ Approval Date: __________________________

Dry Soil

Damp/Wet Soil

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16