Building Types
50x120 Livestock Barn
- Width
- 50 ft
- Length
- 120 ft
- Floor area
- 6,000 sq ft
- Perimeter
- 340 ft
Use
How a 50×120 Livestock Barn May Be Used
Equipment shelter
Machinery clearance height and door width are usually the limiting factors, not floor area.
Commodity and forage
Bulk storage depth against the sidewalls affects how the building is loaded and unloaded.
Drive-through access
End-to-end access lets equipment pass through without reversing.
Seasonal working space
Open floor is commonly kept for repairs and staging between seasons.
Example
Example Configuration
Quick dimensions
At a Glance
Width
50 ft across the gable end.
Length
120 ft along the sidewall.
Floor area
6,000 sq ft of clear floor.
Eave height
14 ft at the sidewall on the stored profile.
Configuration
How This Building Is Configured
Configuration summary
| Building type | Livestock Barn |
|---|---|
| Footprint | 50 ft × 120 ft |
| Floor area | 6,000 sq ft |
| Eave height | 14 ft |
Planning
Footprint & Space Planning
Footprint
Width and length are chosen together: width is usually fixed by what has to fit side by side, length by how many bays are needed.
Height
Eave height affects door options, storage height and how open the interior feels.
Access
Where vehicles and people enter changes the whole interior layout, so access is settled before anything else.
Doors and openings
Opening width, height and position are specified with the supplier; they affect the frame and the wall bracing.
Site
Slope, drainage, access for delivery and erection, and the foundation are confirmed for the actual property.
Expansion
Extending along the length is usually simpler than changing the width later, which is worth deciding up front.
Access
Doors & Access Considerations
Opening width
Across a 50 ft gable end, the practical opening width is limited by the frame and confirmed with the supplier.
Opening height
A 14 ft eave sets the ceiling on door height before any frame change.
Drive-through
Matching openings at both ends avoid reversing, at the cost of usable wall.
Similar sizes
Other Sizes for a Livestock Barn
50′ × 100′
5,000 sq ft
50′ × 140′
7,000 sq ft
40′ × 120′
4,800 sq ft
Related
Related Building Types
Example configuration — for planning purposes only.
FAQ
Common Questions
50 ft × 120 ft is 6,000 square feet of floor area before any interior partitions.
Length is usually adjusted in bay increments, and width is a larger design change. Both are confirmed with the supplier for the final design.
Site preparation, foundation and erection are commonly quoted separately from the building package. Confirm the scope of any quote you receive.
Compare nearby sizes
Related footprints for this building type
Each page works through one footprint for one building type.
Overview
A 50x120 livestock barn planned as a barn organised around a central feed alley serving pens on both sides
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 8 feed-face pens — 2 across by 4 deep — and the remaining 0 feet is marginal: the alley is walk-width only, so feeding is done by hand or from outside rather than driven through.
Commitment first: 62% of the 6,000 square feet goes to feed-face pens at 468 square feet each, and 1,680 square feet survives as edge strip. A footprint is worth its own decision when that split lands where the work does. Doors and their approaches decide more about daily use here than the enclosed area does.
A 50 by 120 footprint is a long corridor of a plan: 6,000 sq ft enclosed by 340 ft of wall, at a 2.4:1 length-to-width proportion. Along its 120 ft dimension it takes 4 runs of feed-face pens at 26 ft, leaving 16 ft over — the 16 ft is where the argument about this size actually happens. Taken purely as arithmetic, 50 by 120 gives 1 feed-face pens across the 50 ft dimension once 16 ft is reserved for movement, and 4 deep along the 120 ft dimension. The 16 ft left across and 16 ft left deep are the only genuinely discretionary space on this footprint. Water lines freeze at the point they are least accessible, which is usually where they were easiest to install.
At 50x120 the operating question is a specific one: is the alley wide enough to drive and feed from, and does the width left either side still make a usable pen? That is a different question from the one a livestock barn of another shape has to answer, and it is why this footprint is planned as a barn organised around a central feed alley serving pens on both sides rather than as generic covered area.
Areas, perimeter, roof area, ridge height, slab volume and the feed-face pen counts on this page are computed from the stored 50x120 record and this platform's planning module for the livestock barn category.
Openings
Openings for 2 feed-face pens across
One opening per position works on this gable: 2 across 50 feet, with 14 feet of wall to distribute as piers. Splitting that margin evenly is what keeps the elevation buildable. Neighbouring buildings, setbacks and the approach road often decide the orientation before the plan does.
The 50 ft ends and the 120 ft sides offer very different opening budgets: 50 ft of end wall has room for one wide opening or two modest ones, while 120 ft of side wall can carry several without the openings competing. Where they go decides which of the 1 feed-face pens across is reached first.
Animals loaded through a handling route at one end; feed and bedding delivered to a different point entirely.
Framed-opening sizes, headers and the structure around them are engineered for the specific building. Confirm every opening with the door supplier and the building manufacturer before ordering.
Configurations
Configuring 8 feed-face pens at 50x120
Nominal bay division computes to 5 bays at about 24 feet, wider than the 18-foot module — so a position can sit inside a bay without a frame line splitting it. Two operations of the same size can want opposite plans, so the arithmetic below is a starting point rather than a recommendation.
With 4 rows deep, the rear row is behind the front one. Without a route past it, those feed-face pens become storage positions rather than working ones — the real cost of depth at this width. An empty building looks generous and a working one rarely does; plan against the working state.
Extension is cheapest along the 120 ft dimension, where each added bay repeats work already framed; widening past 50 ft is a different frame rather than a longer one. A 50 by 120 building that grows to 50 by 146 gains 5 runs of feed-face pens instead of 4, which is the practical unit of growth here.
Configured as a barn organised around a central feed alley serving pens on both sides, 50x120 is judged on whether the 8 feed-face pens it holds match the operation, and on whether the 14 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 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?
- How does air move through the barn on a still day?
- Can the cleaning machine work the full alley without moving animals twice?
Bay division shown here is a planning module computed from the stored length. Actual bay spacing is set by the manufacturer's frame design for the building.
Allocation
Dividing the floor for a barn organised around a central feed alley serving pens on both sides
The housing pattern this barn could equally be planned around is a barn holding individual pens for calving, sickness and close observation: there is no supplies position, so everything needed at three in the morning is fetched from another building. Alley down the centre, pens either side, feed face along both alley walls. Off-centre alleys create a deep side and a shallow side, which is occasionally deliberate and usually accidental.
The 0-foot leftover depth falls under the 12 feet this platform treats as usable for a livestock barn, so the alley is walk-width only, so feeding is done by hand or from outside rather than driven through. The building is fixed for decades while the operation inside it changes every few years, and the plan has to survive that.
Spare width is the more valuable of the two leftovers here: a continuous 14-foot strip beats the same area stranded at the end of the run, because it touches every position along the way. The floor treatment is a use decision that outlasts most of the equipment standing on it.
Compared with a 50 by 90 of the same width, the extra depth here adds run rather than reach: it buys about 4 feed-face pens in line, and every position past the second is retrieved by moving what stands in front of it. Spent as a square 77 by 77 instead, the same 6,000 sq ft would stand 3 feed-face pens 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. Feeding is the daily event and it runs the length of the building in one pass. Everything else — bedding, observation, handling — is arranged so it does not have to happen during that pass. Vermin and birds are managed at the eave, the base and the feed store, or they are managed for the life of the building. That movement pattern, not the 6,000-square-foot total, is what decides whether the leftover 0 feet is useful here.
Usable area
How the 6,000 square feet divides at 50x120
Computed feed-face pen fit for a 50x120 livestock barn
| Measure | Computed at this footprint |
|---|---|
| Feed-face pens across the 50-foot width | 2 at a 18-foot module |
| Leftover width | 14 ft (1,680 sq ft as a full-length strip) |
| Rows along the 120-foot length | 4 at a 26-foot module after 16 ft of circulation |
| Leftover depth | 0 ft (0 sq ft across the width) |
| Total feed-face pens | 8 |
| Share of floor committed | 62% |
Module footprint used here is 18 by 26 feet, this platform's planning module for a livestock barn. It is not a code minimum or an engineered clearance.
Example allocation of the 120-foot length — planning model, not survey data
| Zone | Length along the building | Computed area |
|---|---|---|
| Stalls and animal housing | 54 ft | 2,700 sq ft |
| Aisle and handling space | 36 ft | 1,800 sq ft |
| Tack, feed and storage | 30 ft | 1,500 sq ft |
Shares applied to the stored 120-foot length; areas computed against the 50-foot width.
Module footprints and allocation shares come from this platform's use typology and are published as example planning models. They are not recommendations and do not describe a majority of projects.
Height
Interior height for a 50x120 livestock barn
Across a 50-foot span the 3:12 pitch adds 6.3 feet between eave and ridge. The centreline measures 20.3 feet; anything parked or stacked near a wall lives with the 14-foot eave. Ground conditions and drainage decide the floor before the frame does.
Alley height is set by the feeding equipment and the pen height by air movement. Both are specific to the equipment and to the building rather than to the type.
Ventilation across 6,000 square feet at this height: air quality above the animals is the defining requirement of the building, and it drives ridge, eave and sidewall decisions together.
Clear height below purlins, bracing and lighting is lower than the eave height. The usable figure comes from the manufacturer's framing for the selected building.
Comparison
What changes at adjacent footprints
Computed comparison of nearby footprints for a livestock barn
| Footprint | Floor area | Feed-face pens |
|---|---|---|
| 30x80 | 2,400 sq ft | 2 (1 x 2) |
| 40x60 | 2,400 sq ft | 9 (3 x 3) |
| 50x50 | 2,500 sq ft | 8 (4 x 2) |
| 40x70 | 2,800 sq ft | 4 (2 x 2) |
| 30x100 | 3,000 sq ft | 3 (1 x 3) |
Areas computed from each stored size record; feed-face pen counts computed with the same 18 by 26 foot planning module.
- 30x80 moves the count from 8 to 2 feed-face pens (1 across by 2 deep), which is the reason to choose between them.
- 40x60 moves the count from 8 to 9 feed-face pens (3 across by 3 deep), which is the reason to choose between them.
- 50x50 holds the same 8 feed-face pens but changes the leftover depth by +10 feet, which is where the difference is actually felt.
Nearby footprints read for a livestock barn: exact change in area and in planning feed-face pens
| Footprint | Area Δ | % Δ | Feed-face pens at that footprint | What changes for this use |
|---|---|---|---|---|
| 80x80 | +400 sq ft | +6.7% | 6 (3 x 2) | −2 feed-face pens on the same planning module. |
| 50x100 | −1,000 sq ft | −16.7% | 6 (2 x 3) | −2 feed-face pens on the same planning module. |
| 60x120 | +1,200 sq ft | +20% | 12 (3 x 4) | +4 feed-face pens on the same planning module. |
| 40x120 | −1,200 sq ft | −20% | 8 (2 x 4) | Same feed-face pen count on this planning module; the difference is circulation and stored depth, not capacity. |
Areas are arithmetic on two stored size records; feed-face pen counts use this platform's 18 by 26 foot planning module and are not a capacity statement.
Because this footprint is planned as a barn organised around a central feed alley serving pens on both sides, the useful next reads are different from the ones a differently shaped livestock barn suggests: central feed alley, feed face planning, drive through feeding.
Visualization
Reading the 50x120 footprint as a livestock barn
FAQ
Questions about 50x120 livestock barn projects
Not enough for a planned room at this footprint: the alley is walk-width only, so feeding is done by hand or from outside rather than driven through.
Reserving 16 ft across the 50 ft dimension for movement leaves 34 ft of working width, which takes 1 feed-face pens at 18 ft. Along 120 ft it takes 4 runs at 26 ft. That is 4 positions out of 6,000 sq ft, and the remainder is circulation, walls and the margin every plan needs. These are planning figures computed from the footprint, not a quoted layout.
It depends on the cleaning machine working inside with its bucket raised, not the animals. The stored configuration computes to 20.3 feet at the ridge, but the eave is the number that governs anything standing near a wall.
Where the yard allows a through route, they convert every feeding pass from a reverse into a drive-through. That is a daily saving over the life of the building.
The footprint holds 8 feed-face pens — 2 across by 4 deep — and the remaining 0 feet is marginal: the alley is walk-width only, so feeding is done by hand or from outside rather than driven through. Those counts use a 18 by 26 foot planning module with 16 feet allowed for circulation, so a different module changes the answer.
Methodology
How this page was produced
Sources and methodology
Find Steel Buildings dimensional records
Find Steel Buildings · Primary platform dataset · Tier 1 — code authority, standards body, primary dataset or manufacturer engineering
Supports: Stored nominal width, length, eave height, roof pitch and slab thickness for this subject.
International Building Code and International Residential Code
International Code Council · Model code · Tier 1 — code authority, standards body, primary dataset or manufacturer engineering
Supports: The framework of adopted codes and local amendments that decides permitting, separation and opening requirements. Cited as the governing framework, never as a local requirement.
- Dimensional figures: Width, length, eave height, roof pitch and nominal slab thickness come from this platform's stored record for the subject. Floor area, perimeter, wall area, roof area, ridge height and slab volume are computed from those inputs rather than transcribed.
- Feed-face pen fit: Counts, leftover strips and per-module areas are computed from the stored 50x120 record against this platform's 18 by 26 foot planning module for the livestock barn category, with 16 feet allowed for circulation. The module is editorial planning typology, not a code minimum or an engineered clearance.
- Allocation model: Zone shares come from this platform's use typology for equine housing and riding space and are applied arithmetically to the stored 120-foot length.
- Allocation and layout models: Layout splits are arithmetic on the stored footprint, published as example allocation models. They are not survey findings and do not describe what buyers most often choose.
- Clearance and opening guidance: Clearance and opening statements are planning guidance. Final dimensions depend on the selected door system, header detail and the manufacturer's engineering for the building.
Methodology notes
- Prices: No price figure appears on this page. Cost data is published on this platform only with a documented inclusion basis, a collection date and a named source.
Cost drivers
Quantities that move the estimate at 50x120
The estimate at 50x120 moves with four computed quantities: 6,000 square feet of floor, 340 feet of perimeter, 4,760 square feet of wall and 6,185 square feet of roof. Everything else is site and specification. The plan should survive the day the largest item the operation owns has to come inside.
The feed face, the alley floor and the end openings carry the cost. An alley built too narrow to drive is the one error in this plan that cannot be corrected later.
- ventilation provisions and sidewall openings
- interior pens, gates and durable linings
- the alley width the cleaning machine needs
- drainage and washdown provisions
Drawn to scale
Plans and dimensions
Every drawing below is generated from the exact dimensions for this building, so proportions and areas are accurate.
Continue your research
Related planning topics
Background reading on the questions this page raises. None of these pages sells anything.
Compare 50x120 livestock barn configurations
Review the allocation models for this footprint side by side, then estimate the configuration you intend to build.