Example steel form lists
The shape of the pour changes the list more than the square footage does.
A walk has two long sides. A closed pad has one outside boundary. A driveway may need end forms and corners. Here are four examples with the assumptions left in plain sight.
Examples are planning exercises. Replace every sample dimension with the latest project drawing.
Short answer
Count the actual edges that need forms for one setup. A freestanding strip usually has two long form lines. A closed pad usually has one line around its outside edge. Add formed ends, corners, curves, fillers, and hardware only where the plan shows them.
- 1Name the pour
- 2Trace open edges
- 3Separate each side
- 4Place corners/fillers
- 5Count hardware
1. Four layouts, four different counts
On smaller screens, scroll horizontally to review every column.
| Illustrative assumption | Formed edges | Ten-foot portions and unresolved closeouts |
|---|---|---|
| 100 ft straight walk; both ends open to next pours | Two 100 ft sides | 20 ten-foot forms |
| 100 ft × 10 ft driveway; all four sides formed | 100 + 100 + 10 + 10 ft | 22 ten-foot forms before corner review |
| 20 ft × 15 ft patio; 20 ft house side needs no steel form | 20 + 15 + 15 ft | Four full 10 ft portions plus two 5 ft closeouts to resolve |
| 25 ft × 25 ft closed pad | Four 25 ft sides | Eight full 10 ft portions plus four 5 ft closeouts to resolve |
2. Straight walks and strips
Start with the left edge and right edge. Count a formed end only when the crew needs a bulkhead or closing form there. Do not add an end that continues directly into the next same-day placement unless the pour plan actually breaks there.
Width changes do not automatically change the long-side footage, but they can add angled transitions, short returns, or new corners. Mark those pieces instead of hiding them inside a waste percentage.
3. Driveways, patios, and pads
- Trace clockwise. Write the exact length beside every formed side.
- Mark what replaces a form. An existing slab, wall, curb, or leave-out may change the edge treatment.
- Mark every turn. A closed rectangle has four 90-degree plan turns; a notch adds more. Match the OMF corner's height and female-end connection to the drawn layout.
- Handle odd sides on paper. Show where a filler overlaps and where the full form under it goes.
- Check access. The chosen sequence must leave room to place, strike off, finish, and strip safely.
4. Turn an example into your order
- Replace every sample dimension: Use the latest plan and field-verified existing edges.
- Group by height: Do not combine different edge depths into one piece total.
- Separate straight and flex: Curves have different inside and outside lengths.
- Draw corners and fillers: Make the actual connection layout visible.
- Count simultaneous setups: Reuse only after the forms can truly be stripped, cleaned, moved, and reset.
Questions contractors ask
Do I double the perimeter for a concrete pad?
No. A closed pad normally has one form line around its outside boundary. The two-sides shortcut applies to a freestanding strip such as a straight walk, not every shape.
How many forms are needed for a 100-foot driveway?
The driveway width, formed ends, adjacent work, corners, height, and staging all matter. A 100-by-10 rectangle formed on all four sides has 220 feet of boundary, but the buildable piece layout still needs a corner and closeout check.
Can the same forms be reused for several pads?
Yes when the pour schedule, stripping decision, concrete requirements, cleaning time, form condition, and crew movement make that reuse real. Count the maximum setup that must stand at one time.
AI-assisted editorial review on September 5, 2026 checked this guide against existing Ohio Metal Forms product information and the sources below. Examples are planning exercises, not reported customer jobs. No new shop measurements or performance claims are presented.
Sources and scope
We used the following sources for general formwork and flatwork principles. Product dimensions and fit statements on this page refer specifically to the current Ohio Metal Forms catalog.
- Ohio Metal Forms, Concrete Form Size Guide — existing OMF product guidance for section lengths, piece quantities, matching heights and hardware scope
- Ohio Metal Forms, Form Corner — OMF lists a matching-height 90-degree corner for the female end of its straight form, not separate inside/outside variants
- Ohio Metal Forms, Five-Foot Filler Form — OMF filler slides over matching-height straight forms; the overlap and direction require layout review
- Ohio Metal Forms, Steel Form Takeoff Guide — existing approved takeoff method; the dimensions on this page are explicitly illustrative arithmetic assumptions
This guide is planning information, not a project design, engineering judgment, safety plan, code interpretation, or substitute for the contract documents. The contractor remains responsible for means, methods, site conditions, competent-person review, and applicable requirements.