100x100 Fire and EMS Station Building

This page is ordered around quarters buffer, because that is the decision this footprint settles first and every later choice follows from it.

5 training bays fit across the 100-foot width with only 0 feet left over, which is a tight fit: the width is fully committed and nothing can be widened later without moving a wall.

Commitment first: 64% of the 10,000 square feet goes to training bays at 640 square feet each, and 1,800 square feet survives as edge strip. A footprint is worth its own decision when that split lands where the work does. Plan the exit as carefully as the entrance; buildings are emptied under more time pressure than they are filled.

A 100 by 100 footprint is a near-square plan: 10,000 sq ft enclosed by 400 ft of wall, at a 1:1 length-to-width proportion. Along its 100 ft dimension it takes 3 runs of training bays at 32 ft, leaving 4 ft over — the 4 ft is where the argument about this size actually happens. Combining an apparatus floor with training or drill space multiplies the building's use but also multiplies the ways one activity can interfere with the other, so the central planning task is drawing a boundary — physical or procedural — that keeps a drill from ever standing between apparatus and its door. How apparatus enters and exits governs the plan more than the number of bays does — a drive-through approach and a single-entry approach solve different problems.

This footprint is planned as a station combining an apparatus floor with dedicated training or drill space under one roof. At 1:1 the plan is close enough to square that neither width nor depth is doing the arguing; what decides the layout here is where the openings go, because no proportion is forcing a direction on the floor. Spent as a square 100 by 100 instead, the same 10,000 sq ft would stand 4 training bays across rather than 4, and would trade this plan's length for parallel access. That is the width-against-depth decision this footprint has already made. A building of this size behaves like a small yard under a roof: zones need to be defined, signed and left alone, or they migrate. The longest internal travel on a 100 by 100 plan is about 141 ft corner to corner, and the shortest useful one is the 100 ft cross-run. For a a station combining an apparatus floor with dedicated training or drill space under one roof that matters where apparatus and training station sits, because shortening the 100 ft run to serve it lengthens every trip along the 100 ft dimension. Clearance in the apparatus bay follows the tallest apparatus expected to be housed there, not the ceiling height anywhere else in the building.

The staffing and turnout pattern this station could equally be planned for is a station where apparatus enters at one end of the bay and exits the other, never reversing on site: there is no clear apron at both ends, so an apparatus returning while another is staged blocks the through route entirely. The apparatus floor keeps a dedicated, unobstructed zone including its own approach and door; training space, whether a drill tower footprint, a classroom, or an open floor for equipment drills, occupies a separate zone connected by circulation rather than by shared floor.

The 18-foot leftover depth is 1,800 square feet across the full width — deep enough to plan deliberately, and at this footprint it goes to a separation zone between the apparatus floor and the training area so drills do not compete with a live response for the same door or floor space. Interior divisions are the last decision that should be fixed, because they are the first one that usually changes.

Width is fully committed at 100x100. With 0 feet spare, wall storage and passing room compete with the training bays directly. Utilities entering on the wrong elevation quietly rewrite the interior layout.

At 1:1 the plan is close enough to square that neither width nor depth is doing the arguing; what decides the layout here is where the openings go, because no proportion is forcing a direction on the floor. Spent as a square 100 by 100 instead, the same 10,000 sq ft would stand 4 training bays across rather than 4, and would trade this plan's length for parallel access. That is the width-against-depth decision this footprint has already made. A building of this size behaves like a small yard under a roof: zones need to be defined, signed and left alone, or they migrate. The longest internal travel on a 100 by 100 plan is about 141 ft corner to corner, and the shortest useful one is the 100 ft cross-run. For a a station combining an apparatus floor with dedicated training or drill space under one roof that matters where apparatus and training station sits, because shortening the 100 ft run to serve it lengthens every trip along the 100 ft dimension. Clearance in the apparatus bay follows the tallest apparatus expected to be housed there, not the ceiling height anywhere else in the building. That movement pattern, not the 10,000-square-foot total, is what decides whether the leftover 18 feet is useful here.

The stored configuration carries a 22-foot eave and computes to 38.7 feet at the ridge on a 4:12 pitch — a 16.7-foot rise across 100 feet. Height is therefore not uniform, and the sidewall is the constraint. Depth is bought cheaply and width expensively, which is why this proportion tends to be argued about before anything else.

Training space often needs different clearance than the apparatus bay — a drill tower or hose-drying area may want more height than the bay itself — so each zone's height should be set by its own use rather than by matching the bay uniformly.

Ventilation across 10,000 square feet at this height: exhaust capture in the bays is planned as part of the building rather than added afterwards.

Nominal bay division computes to 4 bays at about 25 feet, wider than the 20-foot module — so a position can sit inside a bay without a frame line splitting it. Insulating later is possible; framing for insulation later is much harder.

Depth here creates a hierarchy: 2 rows means front positions get used and rear positions get filled. Deciding which is which up front is what keeps 100x100 workable. Long spans buy flexibility that is only worth paying for if the operation actually changes shape.

Extension is cheapest along the 100 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 132 adds a 4th run of training bays — useful if the constraint is training bays rather than the 4 ft already spare at the far end.

Configured as a station combining an apparatus floor with dedicated training or drill space under one roof, 100x100 is judged on whether the 10 training bays it holds match the operation, and on whether the 0 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 100-foot length being bought for depth, or for the repeated bays — eight to ten repeated bays, which makes the layout a scheduling problem as much as a spatial one?
• Is the tallest apparatus dimension measured with everything mounted?
• Drive-through or reverse-in, and what does the apron allow?

At 100 feet the gable will not comfortably take one opening per training bay: 5 positions with 0 feet spare leaves too little wall for piers. A single wider opening, or a sidewall opening, is the workable route. Height is the dimension people regret; it cannot be added later without rebuilding the frame line.

The apparatus door remains the priority opening and should never open into or across the training area; a separate entrance and, where a drill tower or yard is included, its own access route, keep the two functions from sharing a threshold.

• 50x80 moves the count from 10 to 3 training bays (3 across by 1 deep), which is the reason to choose between them.
• 40x100 moves the count from 10 to 4 training bays (2 across by 2 deep), which is the reason to choose between them.
• 60x80 moves the count from 10 to 6 training bays (3 across by 2 deep), which is the reason to choose between them.

Because this footprint is planned as a station combining an apparatus floor with dedicated training or drill space under one roof, the useful next reads are different from the ones a differently shaped fire and ems station building suggests: apparatus and training station, drill space planning, combined training fire station.

The estimate at 100x100 moves with four computed quantities: 10,000 square feet of floor, 400 feet of perimeter, 8,800 square feet of wall and 10,541 square feet of roof. Everything else is site and specification. A wider bay is a structural decision and a longer bay is a layout decision; the two are often confused.

Proportion drives cost here as much as size does: 400 ft of wall around 10,000 sq ft is 0.04 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 station combining an apparatus floor with dedicated training or drill space under one roof is the fit-out apparatus and training station implies, along with framed openings and the height chosen for the 100 ft span.

• apparatus door height and width
• drive-through bays versus reverse-in bays
• exhaust capture in the bays
• crew quarters as a separate conditioned envelope