Building Types
30x70 Steel Restaurant Building
- Width
- 30 ft
- Length
- 70 ft
- Floor area
- 2,100 sq ft
- Perimeter
- 200 ft
Example
Example Configuration
Quick dimensions
At a Glance
Width
30 ft across the gable end.
Length
70 ft along the sidewall.
Floor area
2,100 sq ft of clear floor.
Eave height
14 ft at the sidewall on the stored profile.
Use
How a 30×70 Restaurant Building May Be Used
Customer-facing area
Frontage, entry placement and glazing are planned with local requirements in mind.
Back-of-house
Storage and staff areas are commonly separated from the public floor.
Parking and approach
Site circulation often has more effect on the layout than the building itself.
Future fit-out
Clear-span interiors leave partition placement to the fit-out stage.
Configuration
How This Building Is Configured
Configuration summary
| Building type | Restaurant Building |
|---|---|
| Footprint | 30 ft × 70 ft |
| Floor area | 2,100 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 30 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 Restaurant Building
30′ × 50′
1,500 sq ft
30′ × 90′
2,700 sq ft
20′ × 70′
1,400 sq ft
Related
Related Building Types
Example configuration — for planning purposes only.
FAQ
Common Questions
30 ft × 70 ft is 2,100 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 30x70 restaurant building planned as full table service, where server routes decide the plan
This page is ordered around how far a server walks, because table service is a walking-distance problem before it is a seating one.
The footprint holds 8 table zones — 2 across by 4 deep — and the remaining 4 feet is marginal: there are no service stations, so every small errand becomes a trip to the kitchen and across the dining room.
Commitment first: 64% of the 2,100 square feet goes to table zones at 168 square feet each, and 540 square feet survives as edge strip. A footprint is worth its own decision when that split lands where the work does. Every foot of width added multiplies through the roof and the frame; every foot of length mostly adds skin.
A 30 by 70 footprint is a long corridor of a plan: 2,100 sq ft enclosed by 200 ft of wall, at a 2.3:1 length-to-width proportion. Along its 70 ft dimension it takes 5 runs of table zones at 14 ft, leaving 0 ft over — the 0 ft is where the argument about this size actually happens. A table-service plan is a walking-distance problem. The dining room is divided into sections, each section needs a station, and the kitchen route must not pass through the guests' experience. Total floor tells you almost nothing about whether that works. Utility capacity at the site is confirmed before a kitchen layout is fixed.
This footprint is planned as full table service, where server routes decide the plan. Compared with a 30 by 50 of the same width, the extra depth here adds run rather than reach: it buys about 5 table zones in line, and every position past the second is retrieved by moving what stands in front of it. Spent as a square 46 by 46 instead, the same 2,100 sq ft would stand 3 table zones 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 scale the building is usually operated by one or two people who know where everything is, so the plan can be loose and the doors matter more than the divisions. The longest internal travel on a 30 by 70 plan is about 76 ft corner to corner, and the shortest useful one is the 30 ft cross-run. For a full table service, where server routes decide the plan that matters where table service layout sits, because shortening the 30 ft run to serve it lengthens every trip along the 70 ft dimension. Kitchen ventilation and grease-handling provisions are engineered for the specific equipment schedule.
Areas, perimeter, roof area, ridge height, slab volume and the table zone counts on this page are computed from the stored 30x70 record and this platform's planning module for the restaurant building category.
Allocation
Dividing the floor for full table service, where server routes decide the plan
The service model this floor could equally be operated under is counter service, where the queue rather than the table is the planning problem: there is no queue depth, so at peak the line reaches the entrance and people arriving stand outside. Dining sections with a station each, a kitchen route along an edge, and waiting space at the entrance that is not part of the dining room.
There is no end zone at this footprint. 4 feet is circulation slack, not floor area with a purpose, and there are no service stations, so every small errand becomes a trip to the kitchen and across the dining room. Cleaning, maintenance and inspection all need reach, and reach is planned in the gaps rather than in the modules.
The 6 feet of spare width runs the whole 70-foot length — 420 square feet of wall strip. It earns its keep as shelving, staging or a walking route, not as another table zone. A building that cannot be reversed out of is a building that gets used in one direction only.
Compared with a 30 by 50 of the same width, the extra depth here adds run rather than reach: it buys about 5 table zones in line, and every position past the second is retrieved by moving what stands in front of it. Spent as a square 46 by 46 instead, the same 2,100 sq ft would stand 3 table zones 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 scale the building is usually operated by one or two people who know where everything is, so the plan can be loose and the doors matter more than the divisions. The longest internal travel on a 30 by 70 plan is about 76 ft corner to corner, and the shortest useful one is the 30 ft cross-run. For a full table service, where server routes decide the plan that matters where table service layout sits, because shortening the 30 ft run to serve it lengthens every trip along the 70 ft dimension. Kitchen ventilation and grease-handling provisions are engineered for the specific equipment schedule. That movement pattern, not the 2,100-square-foot total, is what decides whether the leftover 4 feet is useful here.
Configurations
Configuring 8 table zones at 30x70
At 23.3-foot nominal bays the structure works with the layout instead of against it: one table zone per bay line, walls free of awkward half-positions. Noise from this floor reaches the office, the neighbours and the yard, and separation is a plan decision.
With 4 rows deep, the rear row is behind the front one. Without a route past it, those table zones become storage positions rather than working ones — the real cost of depth at this width. Temperature swing on a steel shell drives condensation decisions that outrank most layout preferences.
Extension is cheapest along the 70 ft dimension, where each added bay repeats work already framed; widening past 30 ft is a different frame rather than a longer one. Growing to 30 by 84 adds a 6th run of table zones — useful if the constraint is table zones rather than the 0 ft already spare at the far end.
Configured as full table service, where server routes decide the plan, 30x70 is judged on whether the 8 table zones it holds match the operation, and on whether the 6 feet of spare width leaves the route this mode depends on.
- Does the work need two parked lanes side by side, or one lane and a genuine workbench run, or does it need a second lane that this 30-foot span cannot give?
- Is the 70-foot length being bought for depth, or for the repeated bays — six to eight repeated bays, and the bay line becomes the organising device for the whole plan?
- How deep is the kitchen, and what does the dining room get from what remains?
- Where does extraction run, and does that set the building height?
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.
Usable area
How the 2,100 square feet divides at 30x70
Computed table zone fit for a 30x70 restaurant building
| Measure | Computed at this footprint |
|---|---|
| Table zones across the 30-foot width | 2 at a 12-foot module |
| Leftover width | 6 ft (420 sq ft as a full-length strip) |
| Rows along the 70-foot length | 4 at a 14-foot module after 10 ft of circulation |
| Leftover depth | 4 ft (120 sq ft across the width) |
| Total table zones | 8 |
| Share of floor committed | 64% |
Module footprint used here is 12 by 14 feet, this platform's planning module for a restaurant building. It is not a code minimum or an engineered clearance.
Example allocation of the 70-foot length — planning model, not survey data
| Zone | Length along the building | Computed area |
|---|---|---|
| Primary operating area | 42 ft | 1,260 sq ft |
| Customer or staff area | 15.4 ft | 462 sq ft |
| Back of house and utility | 12.6 ft | 378 sq ft |
Shares applied to the stored 70-foot length; areas computed against the 30-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.
Openings
Openings for 2 table zones across
One opening per position works on this gable: 2 across 30 feet, with 6 feet of wall to distribute as piers. Splitting that margin evenly is what keeps the elevation buildable. Access, not area, is what makes a plan feel small once it is in use.
The 30 ft ends and the 70 ft sides offer very different opening budgets: 30 ft of end wall has room for one wide opening or two modest ones, while 70 ft of side wall can carry several without the openings competing. On this plan the deciding factor is whether table service layout or server sections and stations should be the first thing reached from the door.
Deliveries arrive at a rear door straight into storage, because stock crossing a dining room is not workable.
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.
Height
Interior height for a 30x70 restaurant building
Span drives headroom at 30x70: 30 feet of width on a 3:12 pitch puts 17.8 feet over the middle and 14 feet at the walls, so where a tall item stands matters as much as how tall it is. The count of working positions, not the headline area, is the figure that survives contact with the operation.
Height affects acoustics as much as anything else, and a hard tall dining room is loud. Acoustic treatment is specified for the specific room.
A dining room conditioned all service long next to a kitchen generating heat, which makes the boundary between them a real design item.
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.
Cost drivers
Quantities that move the estimate at 30x70
The estimate at 30x70 moves with four computed quantities: 2,100 square feet of floor, 200 feet of perimeter, 2,800 square feet of wall and 2,165 square feet of roof. Everything else is site and specification. Set the openings before the interior, because the openings cannot move and the interior can.
Kitchen, ventilation and restrooms carry the fixed cost; the dining fit-out is the visible one. The kitchen decides what can be served and is the hardest to change.
- kitchen extraction and make-up air
- the equipment schedule and the services it requires
- restroom and dining-room fit-out
- front-of-house appearance and site work
Comparison
What changes at adjacent footprints
Computed comparison of nearby footprints for a restaurant building
| Footprint | Floor area | Table zones |
|---|---|---|
| 24x36 | 864 sq ft | 4 (2 x 2) |
| 30x30 | 900 sq ft | 3 (3 x 1) |
| 20x45 | 900 sq ft | 6 (2 x 3) |
| 24x40 | 960 sq ft | 4 (2 x 2) |
| 20x50 | 1,000 sq ft | 6 (2 x 3) |
Areas computed from each stored size record; table zone counts computed with the same 12 by 14 foot planning module.
- 24x36 moves the count from 8 to 4 table zones (2 across by 2 deep), which is the reason to choose between them.
- 30x30 moves the count from 8 to 3 table zones (3 across by 1 deep), which is the reason to choose between them.
- 20x45 moves the count from 8 to 6 table zones (2 across by 3 deep), which is the reason to choose between them.
Nearby footprints read for a restaurant building: exact change in area and in planning table zones
| Footprint | Area Δ | % Δ | Table zones at that footprint | What changes for this use |
|---|---|---|---|---|
| 36x60 | +60 sq ft | +2.9% | 12 (3 x 4) | +4 table zones on the same planning module. |
| 40x50 | −100 sq ft | −4.8% | 12 (4 x 3) | +4 table zones on the same planning module. |
| 30x80 | +300 sq ft | +14.3% | 8 (2 x 4) | Same table zone count on this planning module; the difference is circulation and stored depth, not capacity. |
| 30x60 | −300 sq ft | −14.3% | 12 (3 x 4) | +4 table zones on the same planning module. |
Areas are arithmetic on two stored size records; table zone counts use this platform's 12 by 14 foot planning module and are not a capacity statement.
Because this footprint is planned as full table service, where server routes decide the plan, the useful next reads are different from the ones a differently shaped restaurant building suggests: table service layout, server sections and stations, kitchen route.
Visualization
Reading the 30x70 footprint as a restaurant building
FAQ
Questions about 30x70 restaurant building projects
2,800 square feet of wall and 2,165 square feet of roof at a 3:12 pitch — the roof exceeding the floor by 3%.
Reserving 10 ft across the 30 ft dimension for movement leaves 20 ft of working width, which takes 1 table zones at 12 ft. Along 70 ft it takes 5 runs at 14 ft. That is 5 positions out of 2,100 sq ft, and the remainder is circulation, walls and the margin every plan needs. Whether that count is enough depends on how far does a server walk between a table and everything a table needs. These are planning figures computed from the footprint, not a quoted layout.
The width leaves 6 feet spare after 2 table zones. That margin absorbs wall storage and passing room. Width is the dimension that cannot be extended later.
Along an edge rather than through the room, so service traffic does not cross the guest experience on every plate.
Length here buys 4 rows and 3 nominal bays; width buys 2 positions side by side. At this aspect ratio the building is already long for its span, so extra length adds depth rather than capacity.
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.
- Table zone fit: Counts, leftover strips and per-module areas are computed from the stored 30x70 record against this platform's 12 by 14 foot planning module for the restaurant building category, with 10 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 commercial and customer-facing operations and are applied arithmetically to the stored 70-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 30x70 restaurant building configurations
Review the allocation models for this footprint side by side, then estimate the configuration you intend to build.