A downtown built on a mall footprint
Westminster demolished its enclosed mall and has spent a decade laying streets, blocks and buildings across the cleared ground. Those Westminster phases are long, fenced and run by superintendents who want units inside the line and serviced on a fixed day. Because a Westminster phase can occupy the same footprint for two years, the placement chosen at mobilization is usually the placement for the duration. Service cadence on a Westminster block rises as the finish trades arrive, so it is reviewed at each phase change.
Open space on the western edge
The western side of Westminster runs out into open space, reservoirs and grassland with trail, fence and habitat work through the season. Units for a Westminster open space contract go at the trailhead or the maintenance gate, since the alignments will not take a service truck.
Grass on that Westminster edge cures early and the interface rules follow, keeping vehicles on gravel and graded surfaces. Wind across the open ground west of Westminster is strong enough to move anything unanchored, so those placements are ballasted without exception.
Older neighborhoods, clay and hail
Between those two poles Westminster is a large stock of postwar and 1970s housing now working through roofs, sewers and mechanical replacement. A Westminster house job takes one standard unit on the driveway for a few weeks, and contractors often run several within a small radius.
Clay under Westminster heaves through the freeze-thaw swings and a unit on disturbed ground will lean. Hail arrives most summers and puts Westminster roofing crews onto whole streets, so standard units are reserved through the season. Heavy wet March snow is the other disruption, loading trees and bringing Westminster cleanup crews out for two weeks.