100x200 Indoor Sports Facility

This page is ordered around the activity surface and the margin around it, because the surround is what decides whether this footprint carries the surface comfortably or only nominally.

The footprint holds 1 field zone — 1 across by 1 deep — and leaves 88 feet of depth for an end zone for equipment, goals and nets that would otherwise be stored against the playing surface.

What distinguishes 100x200 is depth behaviour: 1 row along 200 feet after 12 feet of circulation, with 88 feet unaccounted for at the end of the run. The plan should survive the day the largest item the operation owns has to come inside.

A 100 by 200 footprint is a clearly directional plan: 20,000 sq ft enclosed by 600 ft of wall, at a 2:1 length-to-width proportion. Along its 200 ft dimension it takes 2 runs of field zones at 100 ft, leaving 0 ft over — the 0 ft is where the argument about this size actually happens. A continuous-surface building argues length before anything else. The value is in an uninterrupted run, and every intrusion — a column line, a support room, a stored goal — subtracts from the one quality the building exists to provide. Lighting layout follows the activity surface rather than the structural grid, and the two rarely coincide.

This footprint is planned as a continuous turf-style floor planned as one uninterrupted surface. Compared with a 100 by 150 of the same width, the extra depth here adds run rather than reach: it buys about 2 field zones in line, and every position past the second is retrieved by moving what stands in front of it. Spent as a square 141 by 141 instead, the same 20,000 sq ft would stand 2 field zones across rather than 1, and would trade this plan's length for parallel access. That is the width-against-depth decision this footprint has already made. At this scale the building is infrastructure rather than a shed; scheduling, traffic direction and separation of activities matter more than any single dimension. Use alternates between whole-surface sessions and multiple small-group sessions on the same continuous floor. The plan supports both by keeping the surface unobstructed rather than by dividing it permanently. Floor systems differ substantially by activity, and the choice constrains what the building can be programmed for later.

The programming pattern this floor could equally be scheduled as is a single activity floor scheduled for one group at a time: the margin is minimal, so equipment and waiting participants stand at the edge of the active surface. Dividing the 20,000 sq ft by the 60 by 100 ft field zone gives roughly 2 positions before circulation is deducted a second time for cross movement. Whether the plan keeps 2 or drops to 1 comes back to the question this footprint is really answering: is the surface continuous enough to be used as one field, and where does the equipment that comes with it live?

Depth arithmetic leaves a working end zone here. 8,800 square feet sits past the last row, which is why 100x200 tends to be planned with an end zone for equipment, goals and nets that would otherwise be stored against the playing surface designed in rather than added later. A leftover strip earns its place only when something is deliberately put in it; otherwise it is circulation with a nicer name.

Spare width is the more valuable of the two leftovers here: a continuous 40-foot strip beats the same area stranded at the end of the run, because it touches every position along the way. The corner nobody plans for is the one that fills first, which is an argument for planning it.

Compared with a 100 by 150 of the same width, the extra depth here adds run rather than reach: it buys about 2 field zones in line, and every position past the second is retrieved by moving what stands in front of it. Spent as a square 141 by 141 instead, the same 20,000 sq ft would stand 2 field zones across rather than 1, and would trade this plan's length for parallel access. That is the width-against-depth decision this footprint has already made. At this scale the building is infrastructure rather than a shed; scheduling, traffic direction and separation of activities matter more than any single dimension. Use alternates between whole-surface sessions and multiple small-group sessions on the same continuous floor. The plan supports both by keeping the surface unobstructed rather than by dividing it permanently. Floor systems differ substantially by activity, and the choice constrains what the building can be programmed for later. That movement pattern, not the 20,000-square-foot total, is what decides whether the leftover 88 feet is useful here.

Span drives headroom at 100x200: 100 feet of width on a 4:12 pitch puts 42.7 feet over the middle and 26 feet at the walls, so where a tall item stands matters as much as how tall it is. Interior divisions are the last decision that should be fixed, because they are the first one that usually changes.

The height requirement here comes from the activity rather than from the structure, and it is determined for the specific use. What the plan controls is keeping services and lighting clear of the volume above the surface.

Ventilation across 20,000 square feet at this height: sustained high activity across a large volume, so air handling is sized for the busiest scheduled period.

Openings are the pinch point here. With 40 feet of spare width the gable cannot host 1 separate doors, so access is either shared or moved to the 200-foot sidewall. Utilities entering on the wrong elevation quietly rewrite the interior layout.

The 100 ft ends and the 200 ft sides offer very different opening budgets: 100 ft of end wall has room for one wide opening or two modest ones, while 200 ft of side wall can carry several without the openings competing. On this plan the deciding factor is whether continuous surface planning or field length planning should be the first thing reached from the door.

Nominal bay division computes to 8 bays at about 25 feet, narrower than the 60-foot module — so frame lines land inside positions and the interior has to be set out from the columns. What the building holds in its busiest week is the honest brief; the rest of the year is slack.

A single row means nothing is trapped: every position faces the opening directly, which is this footprint's advantage over a deeper building of the same width. Plan the exit as carefully as the entrance; buildings are emptied under more time pressure than they are filled.

Extension is cheapest along the 200 ft dimension, where each added bay repeats work already framed; widening past 100 ft is a different frame rather than a longer one. Growing to 100 by 300 adds a 3th run of field zones — useful if the constraint is field zones rather than the 0 ft already spare at the far end.

Configured as a continuous turf-style floor planned as one uninterrupted surface, 100x200 is judged on whether the 1 field zone it holds match the operation, and on whether the 40 feet of spare width leaves the route this mode depends on.

• Does the work need an interior street with independent zones on both sides and turning room at each end, or does it need a second lane that this 100-foot span cannot give?
• Is the 200-foot length being bought for depth, or for the repeated bays — a long uninterrupted bay sequence that suits repetitive layouts and continuous processes?
• Which sport sets the clear height, and does every zone meet it?
• How does the floor subdivide, and does the structure allow the dividing lines you want?

• 80x100 holds the same 1 field zones but changes the leftover depth by -82 feet, which is where the difference is actually felt.
• 60x150 holds the same 1 field zones but changes the leftover depth by -50 feet, which is where the difference is actually felt.
• 80x120 moves the count from 1 to 4 field zones (2 across by 2 deep), which is the reason to choose between them.

Because this footprint is planned as a continuous turf-style floor planned as one uninterrupted surface, the useful next reads are different from the ones a differently shaped indoor sports facility suggests: continuous surface planning, field length planning, equipment end zone.

Quantities, not prices, are publishable here: roof cladding runs 21,082 square feet — 5% above the 20,000-square-foot floor at a 4:12 pitch — with 370.4 cubic yards of nominal slab beneath it. Insulating later is possible; framing for insulation later is much harder.

Proportion drives cost here as much as size does: 600 ft of wall around 20,000 sq ft is 0.03 ft of wall per enclosed square foot, and a squarer plan of the same area would carry less. What moves the figure further on a a continuous turf-style floor planned as one uninterrupted surface is the fit-out continuous surface planning implies, along with framed openings and the height chosen for the 100 ft span.

• clear height set by the most demanding activity
• the clear span and how the floor subdivides
• zoned lighting and control
• equipment storage rooms opening onto the floor