60x120 Clear-Span Steel Building

Quantities, not prices, are publishable here: roof cladding runs 7,589 square feet — 5% above the 7,200-square-foot floor at a 4:12 pitch — with 133.3 cubic yards of nominal slab beneath it. A leftover strip earns its place only when something is deliberately put in it; otherwise it is circulation with a nicer name.

Utility capacity and distribution to each equipment position — power, compressed air, ventilation — typically outweigh shell cost, since heavy equipment usually demands more from services than from the building envelope itself.

• the span itself, which sets the primary frame
• clear height maintained under a deeper frame
• bracing strategy in the walls and roof
• opening positions the span makes possible

This page is ordered around the route animals take through the building, because a handling plan is judged on whether anything has to double back.

The footprint holds 6 equipment positions — 2 across by 3 deep — and the remaining 3 feet is marginal: there is no service margin between units, so maintaining one machine means shutting down or working around the one beside it.

Commitment first: 64% of the 7,200 square feet goes to equipment positions at 770 square feet each, and 2,100 square feet survives as edge strip. A footprint is worth its own decision when that split lands where the work does. The building is fixed for decades while the operation inside it changes every few years, and the plan has to survive that.

A 60 by 120 footprint is a clearly directional plan: 7,200 sq ft enclosed by 360 ft of wall, at a 2:1 length-to-width proportion. Along its 120 ft dimension it takes 3 runs of equipment positions at 35 ft, leaving 15 ft over — the 15 ft is where the argument about this size actually happens. The clear span here exists to fit an entire equipment sequence, with all its infeed and outfeed, under one roof without a column interrupting a machine's footprint or its material path. The plan is set primarily by the equipment layout, and the building is sized to that layout rather than the other way around. Overhead clearance, not eave height, is the number that matters when a crane, lifted load or tall equipment is involved, and it should be confirmed with the equipment supplier before the frame is ordered.

This footprint is planned as a clear-span floor built to keep a fixed sequence of large equipment under a single roof. Compared with a 60 by 90 of the same width, the extra depth here adds run rather than reach: it buys about 3 equipment positions in line, and every position past the second is retrieved by moving what stands in front of it. Spent as a square 85 by 85 instead, the same 7,200 sq ft would stand 3 equipment positions 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. At this size the building becomes a shared resource, and shared resources need a written rule for who parks where and which door is kept clear. The longest internal travel on a 60 by 120 plan is about 134 ft corner to corner, and the shortest useful one is the 60 ft cross-run. For a a clear-span floor built to keep a fixed sequence of large equipment under a single roof that matters where equipment line building layout sits, because shortening the 60 ft run to serve it lengthens every trip along the 120 ft dimension. Utility distribution to fixed equipment positions or leaseable bays is usually planned before interior finish, since retrofitting service runs into an open clear span is disruptive once the floor is in use.

One opening per position works on this gable: 2 across 60 feet, with 16 feet of wall to distribute as piers. Splitting that margin evenly is what keeps the elevation buildable. The plan should survive the day the largest item the operation owns has to come inside.

Doors are placed for the raw material entering and the finished output leaving, generally at opposite ends of the sequence, with separate service access elsewhere so maintenance traffic never crosses the material path.

Nominal bay division computes to 5 bays at about 24 feet, wider than the 22-foot module — so a position can sit inside a bay without a frame line splitting it. An empty building looks generous and a working one rarely does; plan against the working state.

Two-plus rows change the access question entirely. Every rear position at 60x120 needs either its own opening or an aisle, and 16 feet of spare width is what that aisle has to come from. Ground conditions and drainage decide the floor before the frame does.

Extension is cheapest along the 120 ft dimension, where each added bay repeats work already framed; widening past 60 ft is a different frame rather than a longer one. Growing to 60 by 155 adds a 4th run of equipment positions — useful if the constraint is equipment positions rather than the 15 ft already spare at the far end.

Configured as a clear-span floor built to keep a fixed sequence of large equipment under a single roof, 60x120 is judged on whether the 6 equipment positions it holds match the operation, and on whether the 16 feet of spare width leaves the route this mode depends on.

• Does the work need four lanes across, or two lanes flanking an interior work hall, or does it need a second lane that this 60-foot span cannot give?
• Is the 120-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 dimension genuinely has to be crossed without a column?
• Is the clear height measured under the frame, or at the eave?

The use this column-free floor could equally be bought for is a clear-span floor whose value is uninterrupted stacking height and depth, not station count: there is no load-out lane, so reaching material at the back of the pile means moving material at the front first. Each machine gets a defined position sized for the unit itself plus its service margin and material staging, laid out in the sequence material actually passes through them, with no shared floor left over for unrelated storage.

The 3-foot leftover depth falls under the 10 feet this platform treats as usable for a clear-span steel building, so there is no service margin between units, so maintaining one machine means shutting down or working around the one beside it. The floor treatment is a use decision that outlasts most of the equipment standing on it.

Spare width is the more valuable of the two leftovers here: a continuous 16-foot strip beats the same area stranded at the end of the run, because it touches every position along the way. Two operations of the same size can want opposite plans, so the arithmetic below is a starting point rather than a recommendation.

Compared with a 60 by 90 of the same width, the extra depth here adds run rather than reach: it buys about 3 equipment positions in line, and every position past the second is retrieved by moving what stands in front of it. Spent as a square 85 by 85 instead, the same 7,200 sq ft would stand 3 equipment positions 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. At this size the building becomes a shared resource, and shared resources need a written rule for who parks where and which door is kept clear. The longest internal travel on a 60 by 120 plan is about 134 ft corner to corner, and the shortest useful one is the 60 ft cross-run. For a a clear-span floor built to keep a fixed sequence of large equipment under a single roof that matters where equipment line building layout sits, because shortening the 60 ft run to serve it lengthens every trip along the 120 ft dimension. Utility distribution to fixed equipment positions or leaseable bays is usually planned before interior finish, since retrofitting service runs into an open clear span is disruptive once the floor is in use. That movement pattern, not the 7,200-square-foot total, is what decides whether the leftover 3 feet is useful here.

The stored configuration carries a 20-foot eave and computes to 30 feet at the ridge on a 4:12 pitch — a 10-foot rise across 60 feet. Height is therefore not uniform, and the sidewall is the constraint. Neighbouring buildings, setbacks and the approach road often decide the orientation before the plan does.

Height on a 60 ft span is a separate decision from the 120 ft length, and it is the span that sets the frame's behavior. Raising the eave over 7,200 sq ft affects every bay along the 120 ft dimension, so the test is whether equipment line building layout genuinely needs the extra clear height or only the floor area.

• 30x100 moves the count from 6 to 3 equipment positions (1 across by 3 deep), which is the reason to choose between them.
• 50x60 moves the count from 6 to 2 equipment positions (2 across by 1 deep), which is the reason to choose between them.
• 40x80 moves the count from 6 to 2 equipment positions (1 across by 2 deep), which is the reason to choose between them.

Because this footprint is planned as a clear-span floor built to keep a fixed sequence of large equipment under a single roof, the useful next reads are different from the ones a differently shaped clear-span steel building suggests: equipment line building layout, machine sequence planning, clear-span industrial floor.