50x100 Shouse (Shop House)

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

The footprint holds 3 shell halves — 1 across by 3 deep — and the remaining 0 feet is marginal: the dividing wall is only partial height, so sound, dust and temperature move freely between the shop half and the living half.

Efficiency is the useful number here: 1,667 square feet of enclosed floor per shell half, against a 900-square-foot module. That is generous — the footprint is doing more than hold modules. Noise from this floor reaches the office, the neighbours and the yard, and separation is a plan decision.

A 50 by 100 footprint is a clearly directional plan: 5,000 sq ft enclosed by 300 ft of wall, at a 2:1 length-to-width proportion. Along its 100 ft dimension it takes 3 runs of shell halves at 30 ft, leaving 10 ft over — the 10 ft is where the argument about this size actually happens. An even end split treats the shell as two buildings that happen to share a roof and a long wall. The plan succeeds or fails on whether that shared wall is built to the standard of an exterior wall — sealed, insulated and extended to the roof deck — rather than as an interior partition that happens to divide two very different uses. Dust, noise and temperature move through an under-built partition regardless of how the floor plan is drawn, which is why the buffer's construction matters as much as its position.

This footprint is planned as the shell divided end to end into two roughly equal claims, shop and living. Compared with a 50 by 80 of the same width, the extra depth here adds run rather than reach: it buys about 3 shell halves in line, and every position past the second is retrieved by moving what stands in front of it. Spent as a square 71 by 71 instead, the same 5,000 sq ft would stand 2 shell halves 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 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 two halves function as separate buildings day to day, so anything that has to pass between them — utilities, occasional foot traffic — should be planned as a deliberate crossing rather than assumed to be casual. Fire separation, egress and occupancy classification between a shop portion and a living portion are determined for the specific project by the authority having jurisdiction.

The columns win at this footprint: 25-foot nominal bays against a 30-foot module means every layout decision starts from where the frames fall. Access, not area, is what makes a plan feel small once it is in use.

Depth here creates a hierarchy: 3 rows means front positions get used and rear positions get filled. Deciding which is which up front is what keeps 50x100 workable. Set the openings before the interior, because the openings cannot move and the interior can.

Extension is cheapest along the 100 ft dimension, where each added bay repeats work already framed; widening past 50 ft is a different frame rather than a longer one. Growing to 50 by 130 adds a 4th run of shell halves — useful if the constraint is shell halves rather than the 10 ft already spare at the far end.

Configured as the shell divided end to end into two roughly equal claims, shop and living, 50x100 is judged on whether the 3 shell halves it holds match the operation, and on whether the 20 feet of spare width leaves the route this mode depends on.

• Does the work need three lanes and a working lane, or two lanes with an interior work hall between them, or does it need a second lane that this 50-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?
• How much length does the shop genuinely need before living space takes the rest?
• How is the boundary detailed for noise, dust and air, not just fire separation?

The gable clears roughly 42 ft after corner framing: one opening, not two. Behind 3 ranks a single end opening makes the back rank captive; a sidewall door at 6 ft clear fixes that.

The 50-ft span holds 1 shell halves plus 20 ft — most of another position. Over 100 ft of run that slack becomes a continuous side aisle rather than 3 separate gaps.

100 ft divides exactly into 10 bays at 10 ft. Over 5,000 sq ft a single 10-ft grid is the difference between a plan and an accumulation.

The 20 ft left across the width is most of another shell half without being one. Given a purpose it becomes a full-height dividing wall between the two halves, treated as an exterior wall even though it sits inside the building; left undefined it becomes the strip everything ends up in.

16 ft carries a genuine second level: 15 ft deep across the 50-ft width is 750 sq ft more floor. The stair comes out of the 20 ft of spare width rather than out of the working floor.

3 ranks of 30 ft fit the 100-ft run with 10 ft of circulation each. 5,000 sq ft needs a stated route through it; without one the middle silts up.

Span drives headroom at 50x100: 50 feet of width on a 3:12 pitch puts 22.3 feet over the middle and 16 feet at the walls, so where a tall item stands matters as much as how tall it is. Where the building sits on the site changes how much of this floor is genuinely reachable.

Height on a 50 ft span is a separate decision from the 100 ft length, and it is the span that sets the frame's behavior. Raising the eave over 5,000 sq ft affects every bay along the 100 ft dimension, so the test is whether end split shouse layout genuinely needs the extra clear height or only the floor area.

Ventilation across 5,000 square feet at this height: shop air, dust and fumes must not reach the living half, so the boundary handles air as well as sound.

Quantities, not prices, are publishable here: roof cladding runs 5,154 square feet — 3% above the 5,000-square-foot floor at a 3:12 pitch — with 92.6 cubic yards of nominal slab beneath it. Fire separation, egress and occupancy are determined for the specific building and can reshape this plan entirely.

The full-height, full-depth dividing wall — built and sealed as an exterior-grade assembly — is the item that separates a genuine even split from two zones that merely share a floor plan.

• the length assigned to living quarters
• the separation detail between shop and living space
• two service sets rather than one
• shop clearance carried across the whole frame

The combined-use pattern this footprint could equally be planned around is a working shop that carries a compact living unit as a secondary claim on the shell: there is no separated access, so getting to the living unit means crossing the shop floor whenever it is occupied by work. Dividing the 5,000 sq ft by the 30 by 30 ft shell half gives roughly 3 positions before circulation is deducted a second time for cross movement. Whether the plan keeps 3 or drops to 1 comes back to the question this footprint is really answering: does the dividing wall between shop and living actually behave like an exterior wall, or is it a partition in name only?

Treating the last 0 feet as a room is the recurring planning error at 50x100: the dividing wall is only partial height, so sound, dust and temperature move freely between the shop half and the living half. Temperature swing on a steel shell drives condensation decisions that outrank most layout preferences.

Spare width is the more valuable of the two leftovers here: a continuous 20-foot strip beats the same area stranded at the end of the run, because it touches every position along the way. The count of working positions, not the headline area, is the figure that survives contact with the operation.

Compared with a 50 by 80 of the same width, the extra depth here adds run rather than reach: it buys about 3 shell halves in line, and every position past the second is retrieved by moving what stands in front of it. Spent as a square 71 by 71 instead, the same 5,000 sq ft would stand 2 shell halves 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 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 two halves function as separate buildings day to day, so anything that has to pass between them — utilities, occasional foot traffic — should be planned as a deliberate crossing rather than assumed to be casual. Fire separation, egress and occupancy classification between a shop portion and a living portion are determined for the specific project by the authority having jurisdiction. That movement pattern, not the 5,000-square-foot total, is what decides whether the leftover 0 feet is useful here.

Openings are the pinch point here. With 20 feet of spare width the gable cannot host 1 separate doors, so access is either shared or moved to the 100-foot sidewall. Snow, wind and site exposure change what this shape costs to build long before the interior plan does.

Each half gets its own exterior entrance on its own end of the building; a shared entry point undermines the entire premise of an even split.

• 40x50 moves the count from 3 to 0 shell halves (1 across by 0 deep), which is the reason to choose between them.
• 30x70 moves the count from 3 to 1 shell halves (1 across by 1 deep), which is the reason to choose between them.
• 36x60 moves the count from 3 to 1 shell halves (1 across by 1 deep), which is the reason to choose between them.

Because this footprint is planned as the shell divided end to end into two roughly equal claims, shop and living, the useful next reads are different from the ones a differently shaped shouse suggests: end split shouse layout, dividing wall standard, even shop and living split.