3D Construction Site Safety Planner — Real-Time OSHA Compliance & Crane Swing Zone Analysis
Your next OSHA inspection shouldn't hinge on a 50-page PDF safety plan. This interactive 3D site safety planner lets you place cranes, visualize compliance zones, detect spatial conflicts, and model construction phases — before a single pile is driven.
"Find the crane conflict now for $10,000. Or find it on-site for $100,000. The tool pays for itself if it prevents literally anything from going wrong."
— BUSINESS CASE · CONSTRUCTION SITE SAFETY PLANNING
What This Tool Does
An interactive 3D construction site safety and logistics planning tool — built with Three.js and WebGL, procedurally generated, no external 3D assets required.
Crane Placement with Live Swing Zone Analysis
Move two Potain MDT 389 tower cranes across the site. Watch the 63m exclusion radius update instantly. See conflicts with pedestrian routes, fall zones, and each other appear in real time.
OSHA Safety Zone Visualization
Toggle swing zones, fall protection barriers, pedestrian routes, and material staging — each coded to actual OSHA 29 CFR 1926 clearance requirements. Orange, yellow, green, and blue zones match industry-standard color coding.
Real-Time OSHA Compliance Score
10 safety checks calculated live using spatial geometry — crane-to-pedestrian distance, crane-to-crane separation, fall setback compliance, coverage, and egress. Score updates as you adjust the layout.
Construction Phase Modeling (5 Phases)
Slide from Foundation through Structure L1-4, L5-8, L9-12, and MEP/Finishes. Building floors rise, equipment configurations change, and safety zone requirements update per phase.
Who This Is Built For
Five distinct buyer personas — each with their own financial incentive to purchase. Any one of them can approve this without procurement review at the price point it's designed for.
Site Safety Manager
Needs OSHA-compliant site safety documentation. One missed citation = $15,625 fine. One recordable incident = 3-year EMR penalty.
"This 3D model IS our safety plan — undeniable to inspectors, explainable to crews."
Project Manager
Crane positioning conflicts discovered during construction cost $50K–$150K in delays. Every re-mobilization adds days to schedule.
"Find the conflict now, in planning. Not when the crane's already on site."
VDC / BIM Director
Needs client-facing 3D tools that stakeholders actually understand — not just Navisworks clash reports that only engineers can read.
"Finally: something owners, safety officers, and permit reviewers can all look at and immediately get."
Preconstruction Director
Competing GCs submit identical-looking RFP packages. Needs a visual differentiator that proves planning rigor before ground breaks.
"We submitted a 3D interactive safety plan with our bid. Nobody else did."
ESG / Sustainability Lead
Required to demonstrate proactive safety commitment in ESG reports. A paragraph about "safety culture" doesn't satisfy institutional investors.
"Implemented 3D site safety visualization for pre-construction conflict detection. Interactive compliance scoring deployed on Hudson Yards Tower C."
What Happens Without This
Construction site logistics planning today is 40–80 hours of manual CAD work per project. Here's what that costs when it goes wrong.
$156K
OSHA willful or repeat violation per citation (29 CFR 1926)
$150K
Crane positioning conflict discovered on-site — mobilization, re-sequencing, schedule slip
$200K
Direct cost of one lost-time incident — plus 3-year EMR penalty on workers' comp premiums
10×
This tool prevents one OSHA serious citation ($15,625) to pay for itself. Prevent one on-site crane conflict ($100K+) and the ROI is 10×. Prevent one recordable incident and it's immeasurable.
OSHA Compliance — Exactly What's Checked
The compliance score is not a black box. Every check references a real OSHA standard. The browser console shows the full audit trail — pass/fail per check, per adjustment.
| # | Safety Check | OSHA Standard | Pass Criteria |
|---|---|---|---|
| 01 | Crane #1 swing zone clear of pedestrian routes | 1926.550(a)(15) | No overlap with 6m pedestrian corridor |
| 02 | Crane #2 swing zone clear of pedestrian routes | 1926.550(a)(15) | No overlap with 6m pedestrian corridor |
| 03 | Crane swing zones don't overlap each other | 1926.1404(a) | 3m minimum clearance between radii |
| 04 | Fall protection at correct setback from edge | 1926.502(b) | 1.8m (6 ft) minimum from building perimeter |
| 05 | Pedestrian routes separated from material staging | 1926.602(a) | 6m (20 ft) from heavy equipment zones |
| 06 | Crane #1 coverage of building footprint | Efficiency metric | Crane within effective reach of building center |
| 07 | Crane #2 coverage of building footprint | Efficiency metric | Crane within effective reach of building center |
| 08 | Material staging zones accessible | Logistics metric | Clear access path from delivery gate |
| 09 | Site perimeter fully secured | 1926.251(a) | Complete fence line, no gaps |
| 10 | Emergency egress routes clear | 1926.34 | No equipment obstructing exit paths |
Score formula: (Passed checks ÷ 10) × 100. Move a crane toward the pedestrian route — check #1 or #2 fails — score drops from 100% to 90%. Move it back — conflict resolves — score returns to 100%. Every calculation is live, every change is instant.
Technical Accuracy — Equipment & Standards
Every number in this tool maps to a real piece of equipment, a real site geometry, or a real regulatory requirement.
🏗️ Crane Specifications — Potain MDT 389
ModelPotain MDT 389 (top-slewing luffing)
Jib Length60m (197 ft)
Maximum Hook Height80m (262 ft)
Maximum Capacity12 metric tons at 30m radius
OSHA Swing Clearance3m (10 ft) from occupied areas
Swing Zone Radius (modeled)63m (jib + clearance)
📐 Site & Building — Hudson Yards Tower C
Site Footprint100m × 80m (0.8 ha)
Building Stories12 above grade
Floor-to-Floor Height4.2m (AISC standard commercial)
Total Building Height~52m (4.2m × 12 + structure)
Location Coordinates40.754°N, 74.001°W — Manhattan
Construction TypeSteel frame with composite deck
What Clients Provide · What You Get Back
Built for department-level purchase authority — under $15K threshold, no procurement screening, 2–3 weeks from brief to delivery.
| Client Provides | You Receive | Format |
|---|---|---|
| Site survey or topo drawing | Site geometry modeled in 3D | PDF / DWG |
| Building footprint & floor count | Rising construction phases, phased visualization | Simple brief |
| Crane specs (make/model) | Accurate jib radius and clearance zones | Model number |
| Safety zone requirements | OSHA-compliant zone overlays, correct clearances | Project safety plan |
| Brand colors/logo (optional) | Branded portal wrapper, project metadata | Style guide |
📦 Deliverables — One Standalone File
Interactive 3D Safety PlannerStandalone HTML file
OSHA compliance score (10-check audit)Real-time calculation
Crane swing zone visualizationIncluded
Construction phase slider (5 phases)Included
Exportable safety plan screenshotsBrowser screenshot-ready
Hosting requirementAny web server or CDN — no backend
Browser compatibilityChrome, Safari, Firefox, Edge — WebGL 2
Mobile supportFully responsive — tested on iOS and Android
Price range$9,500 – $12,500 per project
Delivery timeline2–3 weeks from brief
Why 3D Beats a 50-Page PDF Safety Plan
- OSHA inspectors remember what they see, not what they read. A 3D model of your safety zones is more defensible than page 47 of a PDF.
- Crane conflicts are spatial, not textual. You cannot see an overlap between a 60m swing radius and a 6m pedestrian route on a spreadsheet. You can see it in 3D in 5 seconds.
- Stakeholders who aren't engineers need to approve safety plans. Owners, city inspectors, and insurance underwriters all have sign-off authority — and none of them read Navisworks reports.
- Pre-construction is the cheapest phase to fix conflicts. A conflict found here costs zero. The same conflict found during erection costs $100K+ and weeks of schedule.
- Your competitors are still submitting PDFs. Include an interactive 3D safety viewer in your next RFP and it's the only thing the selection committee will remember.
Construction ESG — The Social Pillar
ESG reporting frameworks (GRI, SASB, TCFD) require construction companies to disclose workplace safety metrics under the Social pillar. Proactive safety planning tools are exactly the kind of demonstrable commitment institutional investors and project owners want to see.
- TRIR (Total Recordable Incident Rate) — One recordable incident prevented by early conflict detection directly improves this core ESG metric.
- EMR (Experience Modification Rate) — EMR below 1.0 signals better-than-average safety record. This tool helps maintain it.
- OSHA VPP Star certification — Voluntary Protection Programs reward proactive safety systems. A 3D planning tool is exactly this.
- ESG report language: "Deployed interactive 3D site safety visualization for pre-construction conflict detection across [Project]. OSHA compliance scoring implemented for all crane placement decisions."
What It Took to Build
One focused day. Zero external 3D assets. Pure procedural Three.js — every crane mast, jib, safety zone, building floor, site trailer, and perimeter fence is generated in code.
- 100% procedural geometry — no GLB files, no 3D model subscriptions, no Blender exports
- Standalone HTML file — single file, deploys on any CMS, CDN, or static server
- Under 60 KB — loads in under 2 seconds on 4G; runs at 60fps on mid-range mobile
- Spatial geometry calculated with real math — Euclidean distance, radius comparisons, OSHA threshold checks — not fake numbers
- Contextual project wrapper — nav, breadcrumbs, specs table, phase badges — so buyers immediately imagine this in their own project portal