Can a Drone Run Pasadena Parking Deck Joint Checks Before Shift?

Can a drone check Pasadena parking deck joints before the first shift?

A drone can run joint checks on the top levels of a Pasadena parking deck before the first shift, and that changes the order of the morning. After a hard rain, water shows first at expansion joints, failed seals and broken slab edges, and a crew walking the levels on foot often finds those spots late. A flight run before shift lets the crew start from a ranked list instead of a full walk of a 1,800-space deck.

The open top levels are where a drone earns its place, because nothing sits between the camera and the slab. Lower levels, enclosed cores and covered bays still need people. A pre-shift flight over the open top deck is the realistic first use, and it is the right one to test before any wider rollout.

Rain sets how often this job comes up. According to the City of Pasadena, the annual average is 20.4 inches (518.2 mm), and the city says its proximity to the San Gabriel Mountains adds several inches per year compared with nearby areas. WeatherSpark puts the rainy period at about 6.2 months, from October 17 to April 24, with February the wettest month at an average of 3.2 inches.

A climate site using another dataset, WorldClim 2.1, gives 425 mm for Pasadena, so sources disagree on the annual total. For scheduling, the wet window matters more than the exact total, and a storm-morning backup belongs in the plan from October through April.

What can a drone see on an open parking deck?

Sensor choice sets what the report can tell you. A vendor guide on commercial property drone inspection says flights can survey exposed deck surfaces, expansion joints and spandrel beams across all open levels in one mobilization, though that guide does not show a date for the claim. Visible-light cameras pick up surface cracking, spalls, sealant gaps, ponding and staining, which covers much of what a walking crew logs on a top deck.

Other vendor guides describe thermal imaging for moisture intrusion and possible delamination, and multispectral imaging for concrete deterioration. The research found no independent test of drones finding defects in parking deck joints, so treat these as items to trial, not results to bank on.

The limit is depth. A camera records the joint surface, not the concrete beneath the edge. A joint that looks sound from above can hide loose or delaminated material, and a hollow sound under a hammer or chain drag is what finds it. Expect the drone to rank joints for a sounding crew, not to clear the deck.

A fair trial has the drone team fly a deck where your crew has already logged known defects, then compares the flagged list with the crew list. That gives you a hit rate on your own concrete, your lighting and your sealants.

Is flying a drone over a Pasadena parking deck allowed?

The FAA rules decide this, and the answer depends on who is below the flight. According to FAA guidance on Part 107 waivers, no waiver is needed when a flight complies with all Part 107 rules, and a waiver is needed when the operator cannot comply as published. The FAA also treats any flight over any part of a person as an operation over people.

A parking deck is rarely empty. Cars, attendants and shoppers may be on lower levels, and people walk the top deck to reach stairs or an elevator. Any of them can turn a routine survey into an operation over people, so the flight plan has to say who is on the deck during the window.

A third-party 2026 guide says the operations-over-people rule, in effect since 2024, lets small drones in certain weight and injury-threshold categories fly over people without a waiver. That guide conflicts with older FAA pages, so confirm the category on faa.gov before scheduling. Waivers for flights over open-air assemblies carry their own conditions, so a deck that hosts events needs a separate plan.

The cleanest version is a pre-shift flight while the top deck is closed to the public, with a written flight plan and a crew member watching the perimeter. Have the remote pilot confirm the category and the operating window in writing before the first flight.

Why does a Pasadena deck need a separate walk after an earthquake?

Pasadena has treated seismic weakness in parking-level buildings as a real risk. According to Pasadena Now, soft-story retrofit Ordinance No. 7345 took effect June 24, 2019. Officials estimated about 500 such buildings, according to a 2019 local report, many of them multifamily with tuck-under parking, and owners of nonconforming buildings get seven years from notification to retrofit. The same Pasadena Now report describes tuck-under ground-floor parking as weak under load and vulnerable to collapse in earthquakes.

The shaking is recent enough to matter. According to Colorado Boulevard, a magnitude 4.4 earthquake in August 2024 led to elevators at Pasadena City Hall being shut down pending inspection. After any shake, the walk should check egress, stair landings, lighting and cracked edges before the deck reopens, and a drone pass can document the top levels quickly while crews work the lower and enclosed areas.

The ordinance covers residential buildings, so it sets no rule for your deck, but it shows how the city views ground-level parking. The research found no city-run seismic inspection program for Pasadena parking structures, so the inspection standard comes from your structural engineer, your insurer and your building records. A drone log is most useful when each entry lists level, joint number and date, so it can go straight to the engineer.

How many parking decks are there, and who staffs them?

The counts disagree, and none is an official government tally. According to IBISWorld, there were 7,592 parking lot and garage businesses in 2026, down 1.4% from 2025, with industry employment of 134,294 in 2025. A business directory dataset, Poidata, counts 21,148 parking garages in the United States as of June 2026. A parking industry study reports more than 40,000 parking facilities including surface lots, and California and New York together account for one-third of them.

Donald Shoup has noted that the government does not track total parking spaces, and estimates range from about 700 million to 2 billion spots, so national totals are best read as estimates. For staffing, WageDex, which summarizes Bureau of Labor Statistics projections, says parking attendant employment is projected to grow about 3% from 2024 to 2034, from about 135.7k to 139.8k jobs, with about 18,500 openings a year.

Parking attendants and garage crews are not the same job, so these figures describe the wider labor pool, not your deck staff. The research found no turnover rate and no figure for hours of deck walks per shift, so use your own HR records and timing for crew numbers. The research also found no Pasadena-specific counts of decks or local staffing, so the national figures are the only verified baseline here.

What should the drone report hand the crew before shift?

Build the workflow around the output. A flight that ends in a folder of images does not shorten a walk. The report should tag each finding to level, zone and joint number, rank it by severity, and flag spots that need sounding or a closer look, so crews walk a short route to the top items instead of the whole deck.

Timing decides whether the report helps. The flight should land before the first shift so findings are ready when the walk begins. With a rainy window from about October 17 to April 24, the plan also needs a backup walk for mornings when wind, cloud or wet decks rule out a flight.

Each report should carry the same fields every time.

Compare each new report with the last storm log. Joints that show up on consecutive flights point to a repair pattern for the engineer, not just a crew task. Keep the flight log with the report, since an insurer or auditor will ask for it.

• Level and zone, with the joint number
• Defect type seen from above
• Severity rank
• Sounding flag for the crew
• Image reference and flight date

What can a drone survey not replace on a Pasadena deck?

Sounding stays a crew task. A chain drag or hammer test across a flagged joint, plus cores where the concrete sounds hollow, tells the engineer what the camera cannot. Joint seal and edge repairs still need people with tools.

Drainage stays a walk too. A camera reads ponding on the surface, but a blocked drain shows its effect only when someone reaches it. Check drains and scuppers on foot after heavy rain.

Life safety stays with people. Stairs, elevator lobbies, lighting and egress need a walk, and an image cannot confirm that a handrail is loose or a light is out. The drone narrows the walk; it does not replace it.

Many managers split the work: a drone for the open top deck, a crew for lower levels and enclosed cores, and the highest-ranked joints sent to the structural engineer. That split keeps flights inside their safe envelope and leaves clean records for an insurer.

How does a drone survey lease work with us?

We start with a free site assessment. We review deck layout, level count, open versus covered areas, public access and flight rules, and we map where a drone can fly without crossing people. You get a written plan before any payment conversation.

The payment comes in a quote after that assessment. The drone is leased through financing, so the program does not need a large upfront outlay, and the quote states the lease terms, service scope and deployment plan.

We are OEM-neutral, so we compare drone platforms against your deck and flight rules rather than pushing one unit. Our regional service engineers, in the states we service, handle setup of the flight team, the report format and repairs under our service plan. A backup unit can keep a storm morning from leaving you without a survey, and a pilot on one deck or one level lets you test the report against your crew's list before a wider rollout.