The driveway on Northumberland Street in Squirrel Hill has a 14 percent grade for its first 22 feet, then flattens into an apron at the garage. In March 2024, the homeowner was replacing a badly cracked slab that had heaved over two winters and thrown the garage door out of alignment. I was hired to document the pour for the warranty file and to give the contractor a time-lapse for his portfolio. What I did not expect was how much the slope would complicate every part of the shoot — the camera positions, the framing, and even the pour itself.
Setting up for a sloped pour
Flat driveway pours are straightforward to document: camera at the apron end, aimed up the slope, one wide frame covers the job. A 14 percent grade breaks that. Aimed up from 20 feet, you see the near edge of the slab and the truck grille. The concrete behind the screed rail is invisible.
I ran two cameras. One went on a pole mount at the top of the grade, aimed down-slope from 9 feet, covering the pour and screed from above. The second went on a tripod on the sidewalk, aimed across the slope at the grade-to-apron transition, because that joint is where blowouts happen on steep pours. Both ran continuously. The pole mount was a paint pole with a ball head clamped near the top and a sandbag on the base — about $35 — positioned without a ladder and without standing in the pour zone. On any documentation shoot, be invisible to the work: a tripod in the pour zone gets moved, and the record has a gap.
Reading the pour to know what to capture
The crew placed from a chute, not a pump: truck backed to the garage end, chute ran down-slope, concrete flowed toward the sidewalk under gravity. The screed rail on the high side is critical — if it moves, the slab runs thick on one side. I kept the down-slope camera aimed at that rail for the first 20 minutes.
Slump is worth documenting when you can. The crew ran a cone test before the pour; I photographed it with the measurement called out on audio: 4.5 inches. If the driveway cracks later and the owner claims mix quality, the slump at placement is on record.
The weather window and why it matters on film
March in Pittsburgh means the weather window for a driveway pour is short. This pour went in on a morning forecast clear through noon with a front by 3 p.m. The crew started at 7:30 a.m. Finishing — bull floating, edging, brooming, sealing — was done by 12:40 p.m. The rain started at 1:15.
I kept timestamps on every stage: first chute placement, screed pass, bull float pass, edging, broom finish, curing compound. The timestamps are in the video’s audio track and in a separate text file. Rain on fresh concrete during or after the finish stage can cause surface scaling. Documentation of the finish time versus the rain time is how you distinguish a bad pour from a bad storm. Squirrel Hill’s elevation gives it more freeze-thaw days than most of Pittsburgh, making that record the contractor’s first line of defense if the slab shows distress in year one.
The time-lapse and what it showed beyond the pour
I set a 30-second interval on the down-slope camera, giving a 90-second clip for the contractor’s records. That clip shows something the crew did not notice: at the apron transition, the concrete settled about a quarter-inch in the 8 minutes between the screed pass and the bull float — visible in the shadows cast by the screed rail. The contractor said it was within normal bleed-water behavior. Whether or not that is true, it is documented. If the slope-to-apron joint ever cracks, the time-lapse establishes whether settlement was present at pour.
Driveway replacement on a sloped Pittsburgh lot typically runs $9 to $16 per square foot installed, depending on grade, access, and whether the old slab has to be broken by hand. This pour was roughly 480 square feet. For sloped work, finding a Pittsburgh concrete driveway contractor who has poured on grade before is the more important variable than the price per square foot.
Frequently asked questions
What should I document during a concrete driveway pour? At minimum: the slump test before placement, the screed and bull float passes with timestamps, the finish type and when it was completed, air temperature, and the first hour of cure. If there is a transition in grade or a complex form setup, keep a camera running continuously on those elements rather than just the general pour.
How do I film a driveway pour without getting in the way of the crew? Set a wide camera on a tripod or pole mount before the truck arrives, aimed at the full pour zone, and let it run. Keep close-up shots to the edges of the work area, not the center where the screeder is moving. Move only between stages: before placement, during screed, during finishing, after broom and seal.
Does a sloped driveway pour need different documentation than a flat one? Yes. You need coverage of the screed rail on the high side throughout the pour, coverage of the grade-to-apron transition, and timestamps for each finishing stage so you can show the sequence was completed before any weather event. A flat pour fails evenly; a sloped pour has specific failure points that need their own camera positions.