Job 2915

2915 — ROCK R-series aerial, 01 Sep 2026

These rasters are derived entirely from the colorized point cloud — no photogrammetry, no image stitching. Every pixel is a real LiDAR return carrying its own colour, projected straight down, so the whole 139-acre site is covered including the northern strip where the source photos never finished uploading. Georeferencing is inherited from the cloud: NAD83(2011) / Alabama West (ftUS) + NAVD88 height, which is the same coordinate system the survey works in — these drop straight onto existing linework in CAD.

Colorized LiDAR
Source
271.2 M points
0.20 ft
Resolution
≈ 6.1 cm/px
139 acres
Extent
2512 × 2405 ft
12,562 × 12,025
Grid
px per raster

Preview

Downsampled to 1800 px for the browser. The GeoTIFFs below are the full 12,562 px originals.

RGB orthoimage

RGB orthoimage preview of job 2915

Click to open full preview. Roads, pads, drives and the rail corridor all read clearly.

Intensity

LiDAR intensity preview of job 2915

Shadow-free. Usually the better trace surface for pavement and curb edges.

Downloads

Raster Size What it's for
Carlson / IntelliCAD package ★ 293 MB Everything below in one zip, with insertion instructions. Start here — this is what the drafter needs. Download
Bare-earth TIN (LandXML) ★ 15 MB The surface. 155k points / 306k faces on a 5 ft grid. Carlson: File → Import → LandXML. Import this before contours. Download
Linework DXF ★ 2.7 MB F2F strings + survey points on your standard layers, plus 1 ft contours and traced buildings/pavement on separate CONT-*, BUILDING-LIDAR and ASPHALT-LIDAR layers. Download
Survey points (PNEZD) 32 KB 645 field points: Pt#, Northing, Easting, Elevation, raw field code. Imports through Field-to-Finish. Download
Bare-earth DTM 47 MB 1 ft bare-earth grid, GeoTIFF, elevations in US survey feet. Source for contours and volumes. Download
Classified ground points 30 MB The ground returns themselves, after SMRF classification. Re-surface at your own settings if ours do not suit. Download
Contours — 1 ft minor / 10 ft major 1.5 MB 854 lines, 89 of them majors at every 10 ft. Median-then-gaussian smoothed and clipped to real data. Also embedded in the DXF on CONT-MINOR / CONT-MAJOR; this is the raw data if you would rather re-generate. Download
RGB orthoimage ★ 219 MB True top-down colour image. General context, roof and pad outlines, surface materials. Download
Intensity raster ★ 69 MB Best surface for planimetrics — pavement edges, curbs and striping stay crisp because intensity is shadow-free. Download
Hillshade 80 MB Breaklines, curb faces, ditches, slope changes. Trace grade features the imagery flattens out. Download
DSM (surface elevation) 208 MB Float32 elevation in US survey feet, NAVD88. Source for contours once ground is classified. Download

Notes for the drafter

  • Coordinate system is already correct. NAD83(2011) / Alabama West (ftUS), NAVD88 heights, US survey feet. Insert as-is — no reprojection, no scaling.
  • Trace from intensity first, check against RGB. Intensity has no shadows, so pavement edges under tree canopy stay visible where the colour image goes dark.
  • Hillshade catches what both images miss — curb faces, ditch lines, and grade breaks show as shading even where the surface colour is uniform.
  • This is a DSM-based projection, not a true ortho. Tall vertical faces can lean slightly and dense canopy hides ground beneath it. For hard-surface planimetrics it is accurate; for anything under tree cover, verify against the point cloud.
  • The bare-earth surface is machine-classified and was scored against this job's own survey shots: median error +0.01 ft, RMSE 0.66 ft over 539 points, and 0.28 ft on property corners alone. About 12% of shots differ by more than a foot, and nearly all of those are under tree canopy. Trust it on hard surfaces; check it under cover.
  • CONT-*, BUILDING-LIDAR and ASPHALT-LIDAR were traced by machine, not field-located. They are on their own layers on purpose — correct them and promote onto the standard layers, so it stays obvious what has been checked. Roughly 10 of the 136 building shapes are tree clumps (ragged rather than rectangular), and pavement edges run narrow where the surface is light-coloured.