Building Types
80x100 Grain Storage Building
- Width
- 80 ft
- Length
- 100 ft
- Floor area
- 8,000 sq ft
- Perimeter
- 360 ft
Use
How a 80×100 Grain Storage Building 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
80 ft across the gable end.
Length
100 ft along the sidewall.
Floor area
8,000 sq ft of clear floor.
Eave height
20 ft at the sidewall on the stored profile.
Configuration
How This Building Is Configured
Configuration summary
| Building type | Grain Storage Building |
|---|---|
| Footprint | 80 ft × 100 ft |
| Floor area | 8,000 sq ft |
| Eave height | 20 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 80 ft gable end, the practical opening width is limited by the frame and confirmed with the supplier.
Opening height
A 20 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 Grain Storage Building
80′ × 80′
6,400 sq ft
80′ × 120′
9,600 sq ft
70′ × 100′
7,000 sq ft
Related
Related Building Types
Example configuration — for planning purposes only.
FAQ
Common Questions
80 ft × 100 ft is 8,000 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.
Cost drivers
Quantities that move the estimate at 80x100
The estimate at 80x100 moves with four computed quantities: 8,000 square feet of floor, 360 feet of perimeter, 7,200 square feet of wall and 8,433 square feet of roof. Everything else is site and specification. Temperature swing on a steel shell drives condensation decisions that outrank most layout preferences.
Proportion drives cost here as much as size does: 360 ft of wall around 8,000 sq ft is 0.045 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 large agricultural logistics building combining storage zones with a movement spine is the fit-out agricultural logistics building implies, along with framed openings and the height chosen for the 80 ft span.
- wall design for product pressure, which is an engineering output
- the opening size the handling equipment needs
- ventilation and monitoring provisions
- the truck apron and turning area
Overview
A 80x100 grain storage building planned as a large agricultural logistics building combining storage zones with a movement spine
This page is ordered around height and clearance, because at 80x100 the 20-foot eave limits a grain storage building sooner than the plan does.
4 storage zones fit across the 80-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.
Efficiency is the useful number here: 1,000 square feet of enclosed floor per storage zone, against a 600-square-foot module. That is generous — the footprint is doing more than hold modules. Height is the dimension people regret; it cannot be added later without rebuilding the frame line.
A 80 by 100 footprint is a mildly directional plan: 8,000 sq ft enclosed by 360 ft of wall, at a 1.3:1 length-to-width proportion. Along its 100 ft dimension it takes 3 runs of storage zones at 30 ft, leaving 10 ft over — the 10 ft is where the argument about this size actually happens. Past a certain size the building stops being a store with access and becomes a small logistics facility. Zones, a spine, defined directions and a place to check what is moving become necessary because informal habits no longer scale. Birds and rodents follow stored product, and the eave, base and door details are where that is addressed.
This footprint is planned as a large agricultural logistics building combining storage zones with a movement spine. Several activities run simultaneously, which is the defining difference from every smaller mode. The spine has to carry them without any one activity's peak blocking another's route. Dust is generated wherever product is moved, and where it settles is a maintenance and safety question addressed in the specification.
Areas, perimeter, roof area, ridge height, slab volume and the storage zone counts on this page are computed from the stored 80x100 record and this platform's planning module for the grain storage building category.
Height
Interior height for a 80x100 grain storage building
Across a 80-foot span the 4:12 pitch adds 13.3 feet between eave and ridge. The centreline measures 33.3 feet; anything parked or stacked near a wall lives with the 20-foot eave. A building that cannot be reversed out of is a building that gets used in one direction only.
Height on a 80 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 8,000 sq ft affects every bay along the 100 ft dimension, so the test is whether agricultural logistics building genuinely needs the extra clear height or only the floor area.
Ventilation across 8,000 square feet at this height: stored product needs air movement and monitoring, which makes ventilation a stored-quality question rather than a comfort one.
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.
Usable area
How the 8,000 square feet divides at 80x100
Computed storage zone fit for a 80x100 grain storage building
| Measure | Computed at this footprint |
|---|---|
| Storage zones across the 80-foot width | 4 at a 20-foot module |
| Leftover width | 0 ft (0 sq ft as a full-length strip) |
| Rows along the 100-foot length | 2 at a 30-foot module after 20 ft of circulation |
| Leftover depth | 20 ft (1,600 sq ft across the width) |
| Total storage zones | 8 |
| Share of floor committed | 60% |
Module footprint used here is 20 by 30 feet, this platform's planning module for a grain storage building. It is not a code minimum or an engineered clearance.
Example allocation of the 100-foot length — planning model, not survey data
| Zone | Length along the building | Computed area |
|---|---|---|
| Equipment bays | 60 ft | 4,800 sq ft |
| Material and input storage | 25 ft | 2,000 sq ft |
| Working and turning space | 15 ft | 1,200 sq ft |
Shares applied to the stored 100-foot length; areas computed against the 80-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.
Allocation
Dividing the floor for a large agricultural logistics building combining storage zones with a movement spine
The handling pattern this building slips into when the season peaks is a support building serving bulk storage held elsewhere on the site: equipment is left outside between seasons, which shortens its life and puts set-up time into every use. Dividing the 8,000 sq ft by the 20 by 30 ft storage zone gives roughly 9 positions before circulation is deducted a second time for cross movement. Whether the plan keeps 9 or drops to 6 comes back to the question this footprint is really answering: at what scale does a store need an internal road rather than an aisle?
The 20-foot leftover depth is 1,600 square feet across the full width — deep enough to plan deliberately, and at this footprint it goes to an inspection and records position on the spine where loads can be checked without leaving the movement route. A wider bay is a structural decision and a longer bay is a layout decision; the two are often confused.
Width is fully committed at 80x100. With 0 feet spare, wall storage and passing room compete with the storage zones directly. Service routes are cheap to plan now and expensive to retrofit through a finished shell.
Several activities run simultaneously, which is the defining difference from every smaller mode. The spine has to carry them without any one activity's peak blocking another's route. Dust is generated wherever product is moved, and where it settles is a maintenance and safety question addressed in the specification. That movement pattern, not the 8,000-square-foot total, is what decides whether the leftover 20 feet is useful here.
Openings
Openings for 4 storage zones across
Openings are the pinch point here. With 0 feet of spare width the gable cannot host 4 separate doors, so access is either shared or moved to the 100-foot sidewall. Noise from this floor reaches the office, the neighbours and the yard, and separation is a plan decision.
Multiple openings serving different zones, with directions assigned. A single shared opening at this scale serialises the whole building and wastes the zoning it was built for.
Machine handling at one end with a clear path to the pile, and product moved rather than carried.
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 storage zones at 80x100
Nominal bay division computes to 4 bays at about 25 feet, wider than the 20-foot module — so a position can sit inside a bay without a frame line splitting it. Every foot of width added multiplies through the roof and the frame; every foot of length mostly adds skin.
Two-plus rows change the access question entirely. Every rear position at 80x100 needs either its own opening or an aisle, and 0 feet of spare width is what that aisle has to come from. Cleaning, maintenance and inspection all need reach, and reach is planned in the gaps rather than in the modules.
Logistics buildings extend by adding zones off the existing spine, which is why the spine's length and position should anticipate the next zone rather than the current one.
Configured as a large agricultural logistics building combining storage zones with a movement spine, 80x100 is judged on whether the 8 storage zones 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 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 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 is product moved in and out, and does the opening suit that equipment?
- Has wall loading from stored product been raised with the manufacturer as an engineering item?
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.
Comparison
What changes at adjacent footprints
Computed comparison of nearby footprints for a grain storage building
| Footprint | Floor area | Storage zones |
|---|---|---|
| 40x80 | 3,200 sq ft | 6 (2 x 3) |
| 60x60 | 3,600 sq ft | 6 (3 x 2) |
| 50x80 | 4,000 sq ft | 9 (3 x 3) |
| 40x100 | 4,000 sq ft | 6 (2 x 3) |
| 60x80 | 4,800 sq ft | 12 (4 x 3) |
Areas computed from each stored size record; storage zone counts computed with the same 20 by 30 foot planning module.
- 40x80 moves the count from 8 to 6 storage zones (2 across by 3 deep), which is the reason to choose between them.
- 60x60 moves the count from 8 to 6 storage zones (3 across by 2 deep), which is the reason to choose between them.
- 50x80 moves the count from 8 to 9 storage zones (3 across by 3 deep), which is the reason to choose between them.
Nearby footprints read for a grain storage building: exact change in area and in planning storage zones
| Footprint | Area Δ | % Δ | Storage zones at that footprint | What changes for this use |
|---|---|---|---|---|
| 50x150 | −500 sq ft | −6.2% | 18 (3 x 6) | +10 storage zones on the same planning module. |
| 60x150 | +1,000 sq ft | +12.5% | 24 (4 x 6) | +16 storage zones on the same planning module. |
| 80x120 | +1,600 sq ft | +20% | 20 (5 x 4) | +12 storage zones on the same planning module. |
| 80x80 | −1,600 sq ft | −20% | 8 (4 x 2) | Same storage zone count on this planning module; the difference is circulation and stored depth, not capacity. |
Areas are arithmetic on two stored size records; storage zone counts use this platform's 20 by 30 foot planning module and are not a capacity statement.
Because this footprint is planned as a large agricultural logistics building combining storage zones with a movement spine, the useful next reads are different from the ones a differently shaped grain storage building suggests: agricultural logistics building, zone and spine planning, multi-opening layout.
Visualization
Reading the 80x100 footprint as a grain storage building
FAQ
Questions about 80x100 grain storage building projects
4 storage zones fit across the 80-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. Those counts use a 20 by 30 foot planning module with 20 feet allowed for circulation, so a different module changes the answer.
Reserving 20 ft across the 80 ft dimension for movement leaves 60 ft of working width, which takes 3 storage zones at 20 ft. Along 100 ft it takes 3 runs at 30 ft. That is 9 positions out of 8,000 sq ft, and the remainder is circulation, walls and the margin every plan needs. Whether that count is enough depends on at what scale does a store need an internal road rather than an aisle. These are planning figures computed from the footprint, not a quoted layout.
A 6-inch slab across 8,000 square feet computes to 148.1 cubic yards before thickened edges, piers or waste. The final design comes from the foundation engineer.
Where the site allows two openings, yes — one-way movement removes the reversing that causes most internal delays and damage at this scale.
7,200 square feet of wall and 8,433 square feet of roof at a 4:12 pitch — the roof exceeding the floor by 5%.
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.
- Storage zone fit: Counts, leftover strips and per-module areas are computed from the stored 80x100 record against this platform's 20 by 30 foot planning module for the grain storage building category, with 20 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 agricultural equipment and crop shelter and are applied arithmetically to the stored 100-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.
Drawn to scale
Plans and dimensions
Every drawing below is generated from the exact dimensions for this building, so proportions and areas are accurate.
Compare 80x100 grain storage building configurations
Review the allocation models for this footprint side by side, then estimate the configuration you intend to build.