Parallel unit sequencing
- Sirr Jomar shared a scheduling approach where multiple units progress simultaneously without dependencies to accelerate delivery. - The method runs parallel workstreams instead of strict serial sequencing to shorten overall project duration. - Parallel progression can cut wait time between trades but demands tighter daily coordination to avoid access and stacking conflicts. (x.com)
Construction scheduling usually moves one crew after another through identical spaces. Sirr Jomar’s example flips that logic by pushing multiple units forward at the same time. (procore.com) In construction terms, sequencing is the planned order of tasks, crews, and zones so labor, materials, and inspections line up with the schedule. On apartment, hotel, and office jobs, teams often divide the building into repeatable zones such as floors, rooms, or units. (projectmanager.com) The conventional version is serial: framing finishes in Unit 1, then mechanical, electrical, plumbing, drywall, and finishes follow before the next unit reaches the same stage. Procore says sequencing is built around dependencies, resource availability, and site constraints, which is why many schedules still advance zone by zone. (procore.com) Parallel unit sequencing treats those repeatable spaces more like lanes than a single line. Drywall can start in one unit while systems are being installed in another, as long as crews, access, and inspections do not collide. (procore.com) That approach fits repetitive projects, where the same work package is repeated across many locations. A 2023 study in *Innovative Infrastructure Solutions* said those projects need schedules that let crews move section to section without waiting for predecessor crews to fully clear the entire project. (springer.com) The payoff is time. The same 2023 study found that optimizing parallel crews and work sequence cut project duration by 8% and overall cost by 0.78% in its tested model. (springer.com) The tradeoff is coordination. ProjectManager says sequencing only works when teams keep updating for changing site conditions, resource limits, and physical constraints, because overlapping work can turn into trade stacking and idle time if crews arrive in the same place together. (projectmanager.com) That is why builders increasingly use digital models before work starts. Autodesk says 3D coordination and 4D schedule simulations let teams test equipment routing, material storage, and site constraints in advance, which is exactly the kind of planning parallel workstreams require. (autodesk.com) So the idea in Jomar’s post is not a new trade or a new material. It is a different way to arrange the same crews across repeatable units so the building finishes sooner without waiting for one long chain to clear. (procore.com)
