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FIELD NOTESWhy this view exists / what to try / what I learned
WHY

Compaction, moisture, dust, vibration. The four numbers an Engineer of Record audits. Without instrumentation the only defense in a dispute is anecdote, which is no defense at all.

WHAT TO TRY

Watch sensors tinted cat yellow or red. Those are in WATCH or ALARM state against their spec. The 30-point sparkline on each card shows the most recent drift. Click another site at the bottom to compare.

WHAT I LEARNED

Every sensor needs a spec attached. ASTM D6938 for density. Standard Proctor for compaction. EPA NAAQS for PM2.5. USBM RI 8507 for PPV. A number without a reference is noise. A number with a reference is evidence.

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Dirt Sensors / ATX-DEM-007

Austin Demo + Grading / live

4 sensors. Density and compaction against Standard Proctor. PM2.5 against EPA NAAQS. PPV against USBM RI 8507.

LIVEnow
Sensors
4
instrumented
Alarms
0
exceed threshold
Watches
1
approaching threshold
OK
3
within band
Weather (LIVE NWS)
84FSE 5mph
Partly Cloudy
Vibration PPV
PPV S building
Adj Property
OK
0.41ipstarget 0.5
USBM RI 8507 transient PPV
Dust PM2.5
PM2.5 sidewalk
Perimeter
WATCH
28.26ug/m3target 18
EPA 24h PM2.5 NAAQS 35 ug/m3
Compaction
Compaction subgrade
Subgrade
OK
99.01%target 95
Standard Proctor relative
RTK rover
RTK base rover
Site
OK
1.23cmtarget 1.4
Rover horizontal precision
Other sites:ATX-SBX-001TAY-RTC-014

Density curves are the only honest receipt for compaction. The probe does not lie.