What you need to start
An exterior railing reads as a line against the sky, stone or facade, and it is also a guard people lean on and a handrail they grip. You do not need a final pattern or code detail before calling D’Hierro. Send plans if available, photographs of every edge or stair, approximate lengths, and examples of the character you like; we identify the geometry, substrates, exposure, and project criteria to resolve before the iron is fabricated.
What you decide
- The architectural character and how visible or quiet the iron should be.
- Which stairs, balconies, terraces, or landings belong in the scope.
- Finish color, sheen, and relationship to doors, windows, lanterns, or other exterior metals.
What D’Hierro handles
D’Hierro develops the balcony and exterior railing elevations, post rhythm, handrail and transition details, attachment concepts, finish samples, shop drawings, field verification, fabrication, and installation. The architect, engineer, builder, envelope team, and code professional establish loads, guard and handrail criteria, structure, waterproofing, and adjacent construction.
Separate guards from handrails
A guard protects an open edge. A handrail provides a graspable surface along a stair or ramp. One assembly can perform both functions in some conditions, but the requirements are not interchangeable.
- Guard: protects an open edge
- Top rail
- Slab edge and post attachment, coordinated with the waterproofing
- Handrail: follows the stair
- A profile the hand can grasp, continuous along the run
- Height and openings, set by the governing code
Sections. A guard and a handrail answer different criteria; the design professional sets them for each project, and the drawing expresses them as one piece of ironwork.
Building codes, the 2024 International Building Code among them, treat the two separately: where guards are required, with their height, openings and strength, and the height, graspability, continuity and extensions of handrails. Residential and commercial conditions differ and local amendments apply, so the design professional identifies the governing criteria; D’Hierro’s drawings express them as one coordinated piece of ironwork.
Where the posts land
Post locations affect both pattern and load path. Coordinate them with:
- Structural steel, concrete, framing, blocking, embeds, and slab edges.
- Stone, tile, stucco, masonry, coping, and trim joints.
- Waterproofing membranes, flashings, balcony assemblies, and sealant joints.
- Drains, scuppers, slopes, expansion joints, and water paths.
- Doors, windows, columns, lighting, furniture clearances and access for anchors and tools.
Avoid treating a finished stone cap or waterproofed deck as an unlimited attachment zone. Decide who prepares embeds or blocking, who restores waterproofing, and which surfaces must be complete before field measurement.
Water should leave, not collect
Exterior steel lasts when the assembly, coating, and maintenance plan fit the environment. Detail horizontal surfaces, pockets, hollow sections, fastener interfaces and wall connections so they do not hold water, and keep irrigation and planter drainage from repeatedly wetting the iron.
Exposure, and what it asks of the iron
| Exposure | What reaches the iron | Plan for |
|---|---|---|
| Covered porch or loggia | Heat and sun at the outer edge; little direct rain. | A finish chosen for the exposure and simple cleaning access. |
| Partly covered | Wind-driven rain on the outer runs; water at low points. | Drained horizontals and pockets, and sealed wall connections. |
| Fully exposed | Sun, rain and heat on every surface, all year. | A protective coating system matched to the environment, with access to inspect and touch up. |
| Pool, irrigation or planters | Repeated wetting and chemical splash. | Spray kept off the iron where possible; dissimilar metals and stone runoff reviewed. |
Choose the finish from the project exposure and an approved sample, not from a color name alone.
Draw the elevation at full scale
Review the complete balcony, stair, or terrace rather than one repeated panel: where the pattern begins and ends, how it turns corners, and what happens at walls, columns, and changes in elevation.
Questions worth drawing
Rhythm
Do the posts align with the bays?
Masonry bays, windows and floor joints give the posts their places.
Distance
Does the pattern read from the ground?
A pattern drawn at arm’s length can blur from the street or the garden.
Ends
How does the handrail end and return?
Terminations and returns are drawn, not improvised on site.
Corners
Any short leftover bays?
Corners and ends are where a run looks unplanned.
Delivery
Can it travel in practical sections?
Section lengths are set by access to the balcony or stair.
Joints
Where do field joints and touch-up fall?
Placed where they read as part of the design.
After installation, look periodically for coating loss, rust staining, loose fasteners, failed sealant and standing water, above all at attachments and joints, and address local damage before it spreads. D’Hierro provides cleaning and touch-up direction for the actual finish system at closeout.
Sources and technical references (3)
These references support the technical context above. Project-specific design, code, engineering, and manufacturer requirements still control.
For designers, architects and builders
Shop drawings for your approval before fabrication.
Start a trade project The architect’s checklistWhat to send
Send the edges and the runs.
Photographs of every edge and stair, rough lengths and any plans are enough to begin. Architects and builders can add the structural details and waterproofing sections; the shop drawings come back with every post located for review.
- Plans, elevations, sections and structural details if available
- Wide and close photographs of every edge, stair and attachment surface
- Approximate lengths, and the number of runs, landings and balconies
- The exposure, including irrigation, a pool or anything unusual
- Design and finish references
- Residential or commercial use, the jurisdiction and the schedule
Designer, architect or builder? Start a trade project
