30x100 Self Storage Steel Building

This page is ordered around the row of doors and the drive in front of them, because every unit here is reached from a vehicle.

3 conditioned units fit across the 30-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.

Read this footprint through its span. 30 feet across is the fixed constraint; 100 feet of length is the negotiable one, and at 3.33 to 1 the building is long for its width, so movement runs front to back. Where the building sits on the site changes how much of this floor is genuinely reachable.

A 30 by 100 footprint is a long corridor of a plan: 3,000 sq ft enclosed by 260 ft of wall, at a 3.3:1 length-to-width proportion. Along its 100 ft dimension it takes 6 runs of conditioned units at 15 ft, leaving 10 ft over — the 10 ft is where the argument about this size actually happens. Taken purely as arithmetic, 30 by 100 gives 2 conditioned units across the 30 ft dimension once 8 ft is reserved for movement, and 6 deep along the 100 ft dimension. Run as a a conditioned run holding stock that cannot sit in an unheated building, 2 ft across is below the 6 ft this use needs to be worth planning, so plant has to sit inside the conditioned envelope, which costs rentable area every month it operates Lighting, camera coverage and a legible route matter to an unaccompanied tenant more than any internal dimension.

At 30x100 the operating question is a specific one: what is inside this envelope that justifies conditioning the whole of it? That is a different question from the one a self storage building of another shape has to answer, and it is why this footprint is planned as a conditioned run holding stock that cannot sit in an unheated building rather than as generic covered area.

Openings are the pinch point here. With 0 feet of spare width the gable cannot host 3 separate doors, so access is either shared or moved to the 100-foot sidewall. Rows that cannot be entered independently end up used as one long space.

The 30 ft ends and the 100 ft sides offer very different opening budgets: 30 ft of end wall has room for one wide opening or two modest ones, while 100 ft of side wall can carry several without the openings competing. On this plan the deciding factor is whether climate controlled storage planning or conditioned envelope planning should be the first thing reached from the door.

Tenants unload at their own door from their own vehicle, so aisle width and door position are the service.

30 ft across takes 3 conditioned units and leaves 0 ft. At 3.3 to 1 the building is long enough that the spare width reads as a service strip down one side.

This shape buys frontage with skin: 260 ft of perimeter for 3,000 sq ft, 86.7 ft per 1,000 sq ft, 19% above a square of the same area. At 3.3 to 1 that is the trade, not an error.

100 ft divides exactly into 10 bays at 10 ft. Over 3,000 sq ft a single 10-ft grid is the difference between a plan and an accumulation.

100 ft is deep enough for 6 ranks and a zone behind them. At 3,000 sq ft the failure mode moves from capacity to retrieval — what is behind what.

The 30-ft gable clears about 22 ft after corner framing — 1 module-width openings abreast. At 6 ranks deep the useful pattern is end in, side out, using the 100-ft wall's 6 possible positions.

At 14 ft a 9-ft platform across 30 ft would add about 270 sq ft. Framing for it now is a drawing change; adding it to a finished frame is a structural one.

The facility pattern this building could equally be operated as is a run of larger tenancies for vehicles, trailers and business stock: the apron is short, so anything longer than a single vehicle is manoeuvred off site or not at all. Conditioned area is kept compact and contiguous. Scattering conditioned units through an unheated building multiplies the envelope for the same rentable area.

There is no end zone at this footprint. 2 feet is circulation slack, not floor area with a purpose, and plant has to sit inside the conditioned envelope, which costs rentable area every month it operates. Snow, wind and site exposure change what this shape costs to build long before the interior plan does.

Only 0 feet of width is spare, so there is no wall strip: anything set along a sidewall comes out of a conditioned unit's clearance. Fire separation, egress and occupancy are determined for the specific building and can reshape this plan entirely.

Compared with a 30 by 80 of the same width, the extra depth here adds run rather than reach: it buys about 6 conditioned units in line, and every position past the second is retrieved by moving what stands in front of it. Spent as a square 55 by 55 instead, the same 3,000 sq ft would stand 4 conditioned units across rather than 2, and would trade this plan's length for parallel access. That is the width-against-depth decision this footprint has already made. This is the scale at which informal habits start to fail: two people working at once need the routes named on the plan rather than agreed by memory. Interior access only, through a limited number of doors. Each additional external door is an ongoing cost, not just a construction one. Occupancy over years, not the first lease-up, is what a multi-tenant facility is judged on. That movement pattern, not the 3,000-square-foot total, is what decides whether the leftover 2 feet is useful here.

No price appears on this page. The quantities that scale an estimate at 30x100 are 3,000 square feet of slab, 37 cubic yards of nominal concrete, 3,640 square feet of wall cladding and 3,092 square feet of roof cladding. Circulation width is the first thing surrendered under pressure and the first thing missed afterwards.

Proportion drives cost here as much as size does: 260 ft of wall around 3,000 sq ft is 0.087 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 conditioned run holding stock that cannot sit in an unheated building is the fit-out climate controlled storage planning implies, along with framed openings and the height chosen for the 30 ft span.

• unit door count driven by the mix
• internal partitions and corridors
• access control, cameras and site lighting
• drive aisles and paving between buildings

Nominal bay division computes to 4 bays at about 25 feet, wider than the 10-foot module — so a position can sit inside a bay without a frame line splitting it. The mezzanine that is added afterwards is the change order that reprices the frame.

Two-plus rows change the access question entirely. Every rear position at 30x100 needs either its own opening or an aisle, and 0 feet of spare width is what that aisle has to come from. Storage expands until it meets a wall, so give it a wall on purpose.

Extending the conditioned run means extending the envelope and re-sizing plant. It is planned at the outset or accepted as a second system later.

Configured as a conditioned run holding stock that cannot sit in an unheated building, 30x100 is judged on whether the 18 conditioned units 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 two parked lanes side by side, or one lane and a genuine workbench run, or does it need a second lane that this 30-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?
• What unit mix does local demand support, and does the module allow re-cutting it?
• Can a tenant towing a trailer reach every door?

Span drives headroom at 30x100: 30 feet of width on a 3:12 pitch puts 17.8 feet over the middle and 14 feet at the walls, so where a tall item stands matters as much as how tall it is. Judge the plan by what has to happen on the worst day of the year, not on an average one.

Kept lower than an equivalent unheated run where the stored goods allow it, because conditioned volume is paid for continuously.

• 30x40 moves the count from 18 to 6 conditioned units (3 across by 2 deep), which is the reason to choose between them.
• 24x50 moves the count from 18 to 4 conditioned units (2 across by 2 deep), which is the reason to choose between them.
• 32x40 moves the count from 18 to 6 conditioned units (3 across by 2 deep), which is the reason to choose between them.

Because this footprint is planned as a conditioned run holding stock that cannot sit in an unheated building, the useful next reads are different from the ones a differently shaped self storage building suggests: climate controlled storage planning, conditioned envelope planning, storage running cost.