Choose an LED screen support structure only after the screen format, location, supporting surface, access route and exposure are known. Manufacturer-approved feet or base frames may suit a compact indoor wall; a truss goalpost can frame a moderate display; ground-support towers or a proprietary modular scaffold system may be needed where scale, height or site geometry demands a more substantial solution. None of these names defines a safe design by itself: the complete assembly must be engineered and approved for the actual site.
Structure options at a glance
| Support concept | Typical planning context | Main issues to confirm |
|---|---|---|
| Screen feet or base frames | Compact indoor walls on a level floor or stage | Approved cabinet interface, floor capacity, levelling, rear restraint and public separation |
| Truss goalpost | Indoor stage or exhibition display needing a clear framed opening | Base footprint, bracing, headroom, connections and floor reactions |
| Ground-support towers | Larger event screens or systems requiring controlled elevation | Tower footprint, lifting method, outriggers, exclusion zones and access |
| Proprietary modular scaffold system | Complex geometry, significant working platform needs or uneven site constraints | Exact system components, design drawings, foundations, ties, access and competent erection |
| Engineered outdoor support | Exposed temporary installation | Site-specific stability, ballast or anchorage concept, drainage, weather monitoring and operating plan |
The categories overlap. A project may combine towers, truss and working platforms, but every interface must belong to one coordinated design rather than several independent supplier assumptions.
Feet and base frames for compact screens
Purpose-made feet or base frames can be efficient for press rooms, product launches and breakout spaces. They keep the component count low and may allow assembly from floor level. Their apparent simplicity is also why they are often misused. The feet must be compatible with the cabinet family and intended wall dimensions, and the supporting stage or floor must be checked. Levelling packers, improvised timber and unapproved clamps should not become substitutes for the manufacturer's prescribed hardware.
Consider what happens behind and beside the wall. Technicians need a managed route for power and data, while guests need protection from bases and cables. A freestanding wall in a hotel foyer may fit visually but fail operationally if its feet narrow an escape route or if the delivery path includes a step that prevents safe handling. Even a compact installation needs a defined installation zone and handover inspection.
Truss goalposts and ground-support towers
A truss goalpost consists conceptually of two supported uprights and a horizontal member from which or to which the display system is integrated. It can provide a tidy stage outline and support associated production elements where these are included in the design. It is not automatically stable because it looks symmetrical. Bases, bracing, connections, eccentric loads and the supporting surface all affect the final arrangement. Adding a banner, loudspeaker or lighting fixture later changes the design input and must be reviewed.
Ground-support towers are used when a screen or lifting beam needs greater elevation or a more developed support system. They may include tower bases, mast sections, stabilising components and a controlled lifting arrangement. Outriggers can increase the effective footprint, while ballast or anchorage may be specified as part of the engineered solution. These features need protected space: an outrigger projecting into a vehicle route or ballast placed over an unsuitable cover is not an acceptable compromise.
At an exhibition hall, a goalpost might fit beneath a low roof and arrive through standard loading doors. At an outdoor festival, tower sections and ballast may require forklift access and a larger fenced backstage zone. A venue drawing alone will not reveal temporary ramps, soft verges, service ducts or the audience flow that changes during ingress.
Modular scaffold systems
A proprietary modular scaffold system can create a broad base, working levels and adaptable geometry for larger or awkward sites. Layher is one specific manufacturer and system brand; it should not be used as a generic label for every modular scaffold product. Components from the specified system, the supplier's technical documentation and the engineered design must agree. Mixing look-alike parts or changing bay geometry on site can invalidate the design assumptions.
Scaffold-based support also changes the operational plan. Safe stairs or ladders, edge protection, material loading, rescue arrangements, restricted access and inspection status all need attention. On sloping ground, the temptation to solve level differences informally is especially dangerous. The survey should record the actual terrain and substrate so the designer can define an appropriate foundation and levelling concept.
Indoor and outdoor requirements differ
Indoors, the decisive constraints often include floor loading, ceiling height, fire routes, finishes and operating hours. Outdoors, exposure, ground condition, drainage and changing weather become central. An indoor-rated cabinet or structure cannot be assumed suitable because rain is forecast to be light. Read the comparison of indoor and outdoor LED screens before equipment selection.
No article can provide a universal ballast quantity or wind threshold. Screen permeability, cladding, nearby buildings, orientation, terrain and the supporting system all affect the engineering inputs. The project also needs a documented method for monitoring conditions and taking action, with named authority and enough time to carry out the response safely.
Information to collect during the site survey
- Final screen width, height, cabinet type and proposed lower-edge height.
- Floor, stage or ground construction, levels, slopes and hidden services.
- Loading route, turning space, doorways, lifts and plant access.
- Available footprint for bases, outriggers, ballast and exclusion zones.
- Audience, crew, vehicle, cable and emergency routes throughout the event.
- Indoor or outdoor exposure, planned operating period and weather responsibilities.
- Venue approval process, drawing deadlines and required competent persons.
Confirm the visual requirement with screen size and viewing distance and pixel pitch. This avoids transporting and engineering a larger wall than the content and audience require.
Common mistakes
- Selecting a structure from a photograph without dimensions or site data.
- Treating all modular scaffold products as interchangeable.
- Adding branding, lighting or audio equipment after structural approval.
- Reserving space for the screen face but not for rear bracing and maintenance.
- Placing feet, outriggers or ballast in public and emergency routes.
- Assuming a stage, paving slab or service cover can accept the proposed reactions.
- Omitting build, inspection and dismantling time from the venue schedule.
Structure, labour, lifting equipment and logistics also affect LED screen rental cost; the cheapest component list is not necessarily the lowest-risk or best-value installation.
FAQ
Which structure uses the least floor space?
There is no universal answer. Feet may be compact for a small wall, while their restraint requirements can increase the usable footprint. A flown solution may clear the floor but requires approved overhead infrastructure.
Can ballast be replaced with an anchor?
Only if the engineer specifies an anchorage solution and the landowner or venue approves it after services and substrate are verified. Ballast and anchors are not casually interchangeable.
Can one support design be reused at another venue?
The equipment concept may be reusable, but site conditions and approvals must be reassessed. A previous drawing does not approve a new floor, orientation, screen size or exposure.
Build a better technical brief
Start with the LED screen calculator to define the intended screen dimensions and cabinet layout. Send that output with venue drawings, access information and survey photographs to the technical team. It is a configuration aid, not proof that a support arrangement is safe.
Engineering and site-survey disclaimer: qualified engineering, applicable manufacturer documentation, venue approval and a site-specific risk assessment govern the final design. Installation must also follow local requirements and be supervised and inspected by competent people. This guide intentionally provides no load, ballast or wind formulas, universal limits, or approval for any particular structure.