CRACKMON® 224R Crack-Width Comparator

ACI 224R-01 Compliant Crack Comparator


Product Overview

The Buildera CRACKMON® 224R™ economy crack-width comparator is a handy, pocket-sized crack measuring gauge for quick assessment of cracks in reinforced concrete, masonry, drywall, stucco, and other building materials and structures. Use for periodic inspection or in conjunction with long-term monitoring with CRACKMON® Structural Crack Monitors.

Features and Benefits

  • Dual US/metric scale (0 - 2.5", 0 - 50 mm) with easy-to-read graduations
  • Includes American Concrete Institute crack widths conforming to ACI 224R-01
  • Measure differential sag up to +/- 15° from zero reference plane
  • Low temperature-coefficient thermoplastic ensures precise measurements every time
  • Uniquely serialized for engineering traceability and measurement repeatability
  • Credit-card size fits conveniently in your wallet or shirt pocket
  • Back-printed in durable rich black to eliminate parallax and improve contrast
  • Ultra-definition printing resolution (0.001") ensures fine detail and accurate measurements
  • Includes Euroslot hanger hole for retail displays and point-of-sale merchandising
  • Economical for engineers, inspectors, contractors and property owners
  • QR-code ideal for mobile users and operating instructions
  • Engineered and printed in the USA from tough, flexible and recyclable clear thermoplastic

Engineering Specifications

RANGE AND RESOLUTION

  • Standards Compliance: Includes ACI 224R-01 maximum crack widths for reinforced concrete
  • Crack Widths (direct measurement): .004 (0.10), .006 (0.15), .007 (0.18), .008 (0.20), .010 (0.25), .012 (0.30), .014 (0.35), .016 (0.41), .020 (0.51), .025 (0.64), .030 (0.76), .040 (1.02), .050 (1.27), .060 (1.52), .080 (2.03), .100 (2.54), .120 (3.05), .140 (3.56)
  • English Rule Range: 0-2.5 inches in .05" increments
  • Metric rule Range: 0-50 mm in 1 mm increments
  • Angle Measurement (Sag): up to +/- 15°

DIMENSIONS

  • Overall Size (including hang tab): 3.38" x 5" (86 mm x 127 mm)
  • CRACKMON 224R Card Size : 3.38" x 2.13" (86 mm x 54 mm)
  • Material Thickness: 0.030" (0.77 mm) nominal

MATERIAL PROPERTIES

  • Material: Crystal-clear glycol-modified polyethylene thermoplastic (PETG)

  • Recyclable: Yes
  • Hardness (Rockwell): >100 R
  • Bendability: Excellent, will not break under extreme abuse
  • Temperature coefficient of linear expansion: .000035 in/in/°F (.000051 mm/mm/°C)

OTHER

  • Serial Number: 12-digit unique serial number per card
  • Country of Origin (CoO): Engineered and manufactured in the USA
  • Warranty: 12 months against defects in materials and workmanship

Crack-Width Trend Chart

Download the tracking chart (PDF)


How It's Made

Ordering Information

Buildera™ CRACKMON® 224R™ Crack-Width Comparator. Use stand-alone or in conjunction with Buildera CRACKMON 4020A and 5020AV crack monitors.

CRACKMON® 224R Crack Width Comparator Gauge (1-Pack) | ACI 224R-01 Compliant

UPC 816291010112 | EAN 0816291010112

Package includes (1) CRACKMON® 224R Crack-Width Comparator, instructions and crack progress chart. Shipped in a stay-flat envelope to prevent bending during shipment.

$19.00

CRACKMON® 224R Crack Width Comparator Gauge (50-Pack) |  ACI 224R-01 Compliant

UPC 816291010167 | EAN 0816291010167

Save 37% with bulk-packaging (50/box) for volume end-users with large field and engineering teams.

$599.00