Real data on documentation time, inspection costs, grade tolerances, and industry standards for professional contractors.
Manual sewer as-built compilation
3–4 hours
Average time for field crew using paper notes and spreadsheets
Source: Industry estimate based on field crew surveys
Sitemark as-built generation
10–15 min
From last shot to signed PDF — all in the app
Source: Sitemark platform data
Time saved per as-built
~3.5 hours
Per manhole-to-manhole sewer run documented
Source: Calculated from above
Failed FAA grade inspection
$5,000–$15,000
Reinspection fees, remediation work, schedule delay costs
Source: FAA AC 150/5370-10 enforcement data & contractor estimates
Failed pad certification
$1,900–$5,400
Engineer revisit, remediation, permit re-processing
Source: Building permit records & PE schedule rates
Failed DOT compaction test
$800–$3,500
Per failing location including rework and re-testing
Source: DOT project records & contractor estimates
Contractors using paper or Excel
~67%
Still relying on manual documentation methods in the field
Source: Construction industry survey data
Documentation errors causing inspection delays
1 in 4
Projects with at least one documentation-related delay
Source: Construction project outcome studies
Average days to close out a sewer job
12–18 days
From final shot to city-accepted as-built submittal
Source: Municipal sewer project data
FAA grade tolerance (paved areas)
±0.04 ft
AC 150/5370-10 maximum allowable deviation
Source: FAA Advisory Circular 150/5370-10
FAA grade tolerance (unpaved areas)
±0.10 ft
AC 150/5370-10 maximum allowable deviation
Source: FAA Advisory Circular 150/5370-10
IPC min slope — 6" sewer
0.52% (1/16"/ft)
International Plumbing Code, Table 704.1
Source: IPC 2021, Table 704.1
IPC min slope — 4" sewer
1.00% (1/8"/ft)
International Plumbing Code, Table 704.1
Source: IPC 2021, Table 704.1
IPC min slope — 3" sewer
1.04% (1/8"/ft)
International Plumbing Code, Table 704.1
Source: IPC 2021, Table 704.1
DOT subgrade compaction minimum
95% Proctor
Standard compaction requirement for road subgrade
Source: AASHTO T 180 / typical DOT specifications
International Plumbing Code Table 704.1 — Horizontal Drainage Pipe Slope
| Pipe Diameter | Minimum Slope | Inches per Foot | Min Velocity |
|---|---|---|---|
| 2½" and smaller | 1/4" per foot | 2.08% | 2.0 fps |
| 3" | 1/8" per foot | 1.04% | 2.0 fps |
| 4" | 1/8" per foot | 1.00% | 2.0 fps |
| 6" | 1/16" per foot | 0.52% | 2.0 fps |
| 8" and larger | see code | 0.22%+ | 2.0 fps |
Source: IPC 2021, Table 704.1
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