Build record · Missouri

The steel floor structure went up in three days

Every photograph on this page was taken on site by the crew that did the work, and carries the date it was taken. Nothing here is a rendering or a stock photograph.

In brief

Between 4 and 6 May 2026, the cold-formed steel floor structure of a K&K panelized home was set on pier foundations and bolted out on a sloping site near Branson, Missouri. The photographs below run in the order they were taken: joists delivered and staged, beams landed on pier caps, connections bolted, and the completed platform with the first wall panels stacked alongside it.

The floor is a bolted assembly of galvanized cold-formed sections and open-web joists sitting on individual piers, rather than a poured slab or a wood-framed deck on a continuous foundation. That is what makes the sequence short: the components arrive finished, and the site work is positioning and connecting them.

4–6 May 2026Dates the floor structure was assembled

Pier foundationsIndividual piers with levelled base plates, not a slab

BoltedConnections made with bolts, not site welding

12 photographsSelected from the dated field record of this build

Day one · 4 May 2026

What happens first: the steel arrives and lands on the piers

Sections are delivered cut to length and staged beside the foundation. The first structural act is landing the perimeter and interior beams on the pier caps, which have already been levelled independently of one another — on a sloping site each pier carries its own adjustment.

Galvanized cold-formed steel floor sections stacked on gravel beside a stone retaining wall, 4 May 2026 — Sections delivered cut to length and stacked at the edge of the site.

Open-web steel joists staged on the ground next to the pier foundations, 4 May 2026 — Open-web joists staged next to the foundation before being set.

Steel floor beam landing on a levelled pier cap plate above a concrete pier, 4 May 2026 — A beam landing on its pier cap. Each pier is levelled on its own.

Crew setting steel floor joists across pier foundations with wall panels stacked at left, 4 May 2026 — Joists going in. The stacked panels at left are wall components waiting their turn.

Day two · 5 May 2026

How the floor is held together: bolted connections, not site welding

The joints are made with bolts through pre-punched holes. That matters for what a site day looks like: no welding rigs, no hot work permit, no grinding and re-coating where a weld broke the galvanizing. It also means the connections are inspectable afterwards — you can see and count them, which is the point of photographing them.

Close-up of a bolted connection between steel floor joist and cross member, 5 May 2026 — A bolted joist-to-beam connection at close range.

Bolted joint in the steel floor frame above the gravel bed, 5 May 2026 — The same detail elsewhere in the frame.

Four crew members fastening the steel floor frame on site, 5 May 2026 — Four of the crew working across the frame.

Completed steel floor frame with crew standing on it, 5 May 2026 — By the afternoon the frame carries the crew standing on it.

Crew standing on the completed steel floor platform with the Missouri hillside behind, 5 May 2026 — End of day two, looking back across the platform.

Day three · 6 May 2026

What the finished floor hands over to the next stage

The last day of this stage is the interface: base plates checked, the platform squared, and the wall panels moved into position beside it. The next photographs in this build record are of those panels going up.

Next stage: the envelope and services, before the walls close →

Pier base plate with anchor bolts and levelling shims under the steel floor structure, 6 May 2026 — A base plate with its anchor bolts and levelling shims.

Cross member connection in the completed steel floor structure, 6 May 2026 — A cross-member connection in the completed frame.

Completed steel floor platform seen from above with prefabricated wall panels stacked alongside, 6 May 2026 — The completed platform, with wall panels staged for the next stage.

A note on what these photographs are. They come from the field record the crew keeps on every project, not from a photo shoot. Faces have been obscured, and the location metadata that the field app stamps on each frame has been removed. The dates are unaltered.

Where this fits

This page documents one stage of one build. If you are comparing construction systems rather than following this project, these are the topics that bear on what is shown here:

Foundation and support — why the piers under this floor are what they are
Primary structure — what carries the load in a steel-framed home
On-site work — how much of the work happens on the site at all
Time to occupancy — where three days of floor structure sits in a whole schedule

K&K Data Service Inc. (2026). Steel Floor Structure, Day by Day — build record, Missouri. Photographs taken on site 4–6 May 2026. Retrieved from https://www.kkdatasvc.com/house/build/steel-floor/