80x150 Industrial Steel Building

This page is ordered around division, because a shell of this size is as likely to hold two or three occupiers as one, and frontage rather than area is what makes that possible.

The footprint holds 9 serviced bays — 3 across by 3 deep — and leaves 16 feet of depth for a services and welfare strip along one wall, carrying the panel, compressed air, the tool store and the room people actually take breaks in.

Commitment first: 75% of the 12,000 square feet goes to serviced bays at 1000 square feet each, and 2,030 square feet survives as edge strip. A footprint is worth its own decision when that split lands where the work does. Ground conditions and drainage decide the floor before the frame does.

A 80 by 150 footprint is a clearly directional plan: 12,000 sq ft enclosed by 460 ft of wall, at a 1.9:1 length-to-width proportion. Along its 150 ft dimension it takes 3 runs of serviced bays at 40 ft, leaving 30 ft over — the 30 ft is where the argument about this size actually happens. Taken purely as arithmetic, 80 by 150 gives 2 serviced bays across the 80 ft dimension once 14 ft is reserved for movement, and 3 deep along the 150 ft dimension. Run as a a single serviced work floor operated by one occupier, 16 ft across is enough to be worth planning: a services and welfare strip along one wall, carrying the panel, compressed air, the tool store and the room people actually take breaks in Lighting layout follows work positions rather than the structural grid, and designing it to the grid produces shadowed benches.

At 80x150 the operating question is a specific one: does this footprint carry a serviced working floor with its utilities and welfare on the side, or a bare floor with both taken out of it? That is a different question from the one a industrial building of another shape has to answer, and it is why this footprint is planned as a single serviced work floor operated by one occupier rather than as generic covered area.

At 25-foot nominal bays the structure works with the layout instead of against it: one serviced bay per bay line, walls free of awkward half-positions. A leftover strip earns its place only when something is deliberately put in it; otherwise it is circulation with a nicer name.

Two-plus rows change the access question entirely. Every rear position at 80x150 needs either its own opening or an aisle, and 5 feet of spare width is what that aisle has to come from. The corner nobody plans for is the one that fills first, which is an argument for planning it.

A single-occupier floor grows by extending away from the service wall, so the service wall should be the one that is never intended to move.

Configured as a single serviced work floor operated by one occupier, 80x150 is judged on whether the 9 serviced bays it holds match the operation, and on whether the 5 feet of spare width leaves the route this mode depends on.

• Does the work need racking or work zones on both sides with a full vehicle lane down the middle, or does it need a second lane that this 80-foot span cannot give?
• Is the 150-foot length being bought for depth, or for the repeated bays — a long repeating bay sequence, so segment boundaries are set by bay lines rather than by walls?
• What direction does material flow, and are the openings at the right ends?
• Is overhead handling planned, and has that been raised as an engineering requirement?

The 80-foot gable can carry 3 openings, one per serviced bay, with 5 feet of wall left for piers between and beside them — the arrangement that keeps each position independently reachable. Plan the exit as carefully as the entrance; buildings are emptied under more time pressure than they are filled.

The 80 ft ends and the 150 ft sides offer very different opening budgets: 80 ft of end wall has room for one wide opening or two modest ones, while 150 ft of side wall can carry several without the openings competing. On this plan the deciding factor is whether serviced industrial floor or service wall planning should be the first thing reached from the door.

Handling at fixed points matched to the flow, so a door in the wrong place turns into a permanent double handling cost.

The servicing pattern this shell could equally be operated under is a building whose operation is governed by the yard that serves it: there is no staging depth, so loads are handled twice — once off the vehicle and once out of the way of the next one. Dividing the 12,000 sq ft by the 25 by 40 ft serviced bay gives roughly 6 positions before circulation is deducted a second time for cross movement. Whether the plan keeps 6 or drops to 3 comes back to the question this footprint is really answering: does this footprint carry a serviced working floor with its utilities and welfare on the side, or a bare floor with both taken out of it?

Depth arithmetic leaves a working end zone here. 1,280 square feet sits past the last row, which is why 80x150 tends to be planned with a services and welfare strip along one wall, carrying the panel, compressed air, the tool store and the room people actually take breaks in designed in rather than added later. Neighbouring buildings, setbacks and the approach road often decide the orientation before the plan does.

Spare width is the more valuable of the two leftovers here: a continuous 5-foot strip beats the same area stranded at the end of the run, because it touches every position along the way. The plan should survive the day the largest item the operation owns has to come inside.

Compared with a 80 by 110 of the same width, the extra depth here adds run rather than reach: it buys about 3 serviced bays in line, and every position past the second is retrieved by moving what stands in front of it. Spent as a square 110 by 110 instead, the same 12,000 sq ft would stand 3 serviced bays 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. 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. Material arrives at the yard door, is worked somewhere in the middle and leaves the way it came. That single-route pattern is efficient at this scale and becomes the constraint the moment a second activity needs the same door. The yard usually decides more about an industrial building's performance than the interior layout does. That movement pattern, not the 12,000-square-foot total, is what decides whether the leftover 16 feet is useful here.

Quantities, not prices, are publishable here: roof cladding runs 12,649 square feet — 5% above the 12,000-square-foot floor at a 4:12 pitch — with 222.2 cubic yards of nominal slab beneath it. Interior divisions are the last decision that should be fixed, because they are the first one that usually changes.

The shell dominates the estimate at this scale, but the fit-out items that make the floor usable — distribution, lighting, the slab specification, the apron outside the door — are what separate two otherwise identical buildings.

• clear height for plant and handling
• power capacity and distribution to plant positions
• slab requirements under fixed equipment, which are an engineering item
• opening positions at the flow ends

Span drives headroom at 80x150: 80 feet of width on a 4:12 pitch puts 37.3 feet over the middle and 24 feet at the walls, so where a tall item stands matters as much as how tall it is. What the building holds in its busiest week is the honest brief; the rest of the year is slack.

Height on a 80 ft span is a separate decision from the 150 ft length, and it is the span that sets the frame's behavior. Raising the eave over 12,000 sq ft affects every bay along the 150 ft dimension, so the test is whether serviced industrial floor genuinely needs the extra clear height or only the floor area.

Ventilation across 12,000 square feet at this height: process air is a design requirement rather than general comfort ventilation.

• 60x80 moves the count from 9 to 2 serviced bays (2 across by 1 deep), which is the reason to choose between them.
• 40x120 moves the count from 9 to 1 serviced bays (1 across by 1 deep), which is the reason to choose between them.
• 50x100 moves the count from 9 to 4 serviced bays (2 across by 2 deep), which is the reason to choose between them.

Because this footprint is planned as a single serviced work floor operated by one occupier, the useful next reads are different from the ones a differently shaped industrial building suggests: serviced industrial floor, service wall planning, single-occupier industrial layout.