Rejilla para Césped: Aparcamiento en Eventos
Aparcar sobre césped, sin sacrificar el césped.
Las rejillas para césped de IBRAN distribuyen la carga del vehículo bajo la superficie, de modo que el campo sigue teniendo aspecto de campo el lunes por la mañana.
Por qué es necesario el refuerzo
El césped es el pavimento más económico que existe, hasta que llueve. En cuanto los neumáticos rompen la cubierta vegetal, el daño se multiplica: las roderas retienen el agua, el agua ablanda el terreno y, al tercer evento, estás colocando planchas de paso o pidiendo disculpas a los conductores.
Una rejilla alveolar cambia lo que soporta el terreno. La carga se distribuye sobre toda la superficie en lugar de concentrarse bajo cada neumático, y las paredes de las celdas impiden que la zona radicular se desplace lateralmente, que es lo que realmente genera las roderas. El césped crece a través de las celdas y por encima de ellas, de modo que la superficie parece un jardín, no un aparcamiento disimulado.
El resultado es un campo en el que puedes aparcar en octubre y cortar el césped en noviembre.
Aplicaciones habituales
- Aparcamiento para eventos y festivales
- Clubes deportivos y centros cívicos
- Bares, restaurantes y atracciones turísticas
- Iglesias, colegios y equipamientos comunitarios
- Viales de aproximación para servicios de emergencia y bomberos
- Zonas de desbordamiento junto a aparcamientos pavimentados
- Protección de márgenes y apartaderos
Resumen técnico
| Subbase | 100-150mm de árido drenante de granulometría abierta (equivalente a Tipo 3), según tráfico y condiciones del terreno |
| Relleno | Sustrato radicular de base arenosa, enrasado con la parte superior de las celdas |
| Implantación | Siembra o tepe. Dejar una temporada de crecimiento completa antes del uso intensivo siempre que sea posible |
| Carga típica | Turismos, furgonetas ligeras, vehículos de servicio y emergencia ocasionales |
| Permeabilidad | Totalmente permeable al agua. Se integra habitualmente como componente de la gestión de aguas pluviales en la estrategia de drenaje |
| Normativa urbanística | Las superficies permeables evitan los problemas de escorrentía que condicionan los aparcamientos impermeables |
| Vida útil | 25 años, con instalación documentada |
| Material | 100% polipropileno reciclado, fabricado de forma sostenible en la UE |
Proceso de colocación
- Retirar el tepe y la tierra vegetal existentes hasta alcanzar una explanada firme. Definir las pendientes en esta fase: incluso una superficie permeable se beneficia de una dirección de evacuación para aguaceros intensos.
- Extender un geotextil tejido sobre la explanada, solapando las uniones al menos 300mm, para evitar la contaminación entre la subbase y el terreno natural.
- Extender y compactar la subbase de granulometría abierta por capas. Utilizar árido drenante en lugar de árido todo-en-uno: soporta la carga y permite el paso del agua, que es precisamente el objetivo de una superficie de césped.
- Aplicar una capa de asiento fina y nivelarla. Si se hace bien, las rejillas asientan correctamente; si no, cada irregularidad se traslada al césped acabado.
- Encajar las rejillas a presión sobre toda la superficie, avanzando desde un extremo. Cortar alrededor de árboles, postes y bordillos con sierra de calar o sierra de dientes finos.
- Rellenar las celdas con sustrato radicular de base arenosa, enrasado con la parte superior. Trabajarlo con un cepillo rígido para que no quede ninguna celda hueca.
- Sembrar o colocar tepe, regar y mantener el tráfico alejado hasta que el césped esté establecido.
El proceso completo paso a paso está en nuestra guía de instalación de rejillas para césped.
Elección del sustrato radicular
Utilizar un sustrato radicular de base arenosa, no tierra vegetal sola.
La tierra vegetal retiene el agua y se compacta bajo las ruedas; un sustrato compactado asfixia las raíces justo donde más las necesitas. Una mezcla de base arenosa mantiene el perfil abierto y drenante bajo carga, de modo que el agua lo atraviesa y el aire sigue llegando al sistema radicular después de un fin de semana de uso intenso.
Rellenar enrasado con la parte superior de las celdas, sin sobresalir. El césped crece por encima de las paredes de las celdas y oculta completamente la rejilla, mientras las propias paredes permanecen listas para absorber la carga en el momento en que llegue una rueda.
Getting the grass established
This is the part that decides how the surface looks in year three, and it is worth being patient with.
Seed is cheaper and roots into the rootzone more readily. Turf gives you a usable surface faster but needs to knit through into the profile before it takes traffic. Either way, water it properly through the first season and keep vehicles off until the sward is established.
Once it is growing, treat it as lawn: mow it, feed it, and let it recover between uses. Mowers pass straight over the grid, because the cell tops sit below the growing crown.
Which grid depth?
The number on a grid is a decision about how deep the confined rootzone is, and for grass that depth is doing more work than it does under stone.
- IBRAN®-X50 is our recommendation for grass that has to properly recover. The deeper cell holds more moisture and gives roots more room before they hit anything solid, so the sward survives the summer and the wheel tracks stay green.
- IBRAN®-X40 where the same surface also has to carry gravel elsewhere, or for lighter, less frequent use.
- IBRAN®-X30 where finished levels are constrained or excavation has to stay shallow.
Shallow grids dry out first, and they dry out fastest exactly where the tyres run. If the grass matters, go deeper.
Get it right first time
The one thing worth knowing: give it a season before you load it.
A grass grid surface is only as strong as the root structure holding the rootzone together. Grids installed in spring and parked on in June will look tired; the same installation left to establish through a full growing season will take traffic for decades. Where the timetable will not allow it, use turf rather than seed and keep the first few events to the drier months.
Design your surface
Set out the area, choose a grid and an infill, and see the finished surface. The schedule and the specification follow.
Permeable surface specification
Schedule
Assumptions
Specification
Common Questions
Will the grass survive being parked on?
Yes, provided the rootzone is deep enough and the grass is established before heavy use. The grid spreads vehicle load across the whole surface rather than concentrating it under each tyre, and the cell walls stop the rootzone shearing sideways, which is what creates a rut.
Grass grows up over the cell tops so the surface reads as lawn, and it recovers between uses the way any lawn does.
How long before we can park on newly installed grass grids?
Allow one full growing season before heavy or regular use where you can. The surface is only as strong as the root structure holding the rootzone together.
If the timetable does not allow a full season, use turf rather than seed and keep early events to the drier months.
What should I fill grass grids with?
A sand-dominant rootzone, filled level with the cell tops. Topsoil on its own holds water and compacts under wheels, which suffocates roots exactly where you need them strongest. A sand-dominant mix stays open and free-draining under load.
Which grid depth is best for grass parking?
The 50mm grid is our recommendation where grass has to properly recover between uses. A deeper cell holds more moisture and gives roots more room before they hit anything solid, so the sward survives the summer and the wheel tracks stay green.
Shallow grids dry out first, and they dry out fastest exactly where the tyres run.
Can you mow over grass grids?
Yes. The cell tops sit below the growing crown, so a mower passes straight over without catching. Treat the area as lawn: mow it, feed it, and let it recover between uses.
Do grass grids work in winter and heavy rain?
That is the point of them. The surface stays fully permeable, so water passes through the rootzone and the open sub-base into the ground rather than sitting on top.
Combined with load spreading, that is what stops the ruts and standing water you get parking on unreinforced grass in wet conditions.
What sub-base do grass grids need?
100mm to 150mm of compacted open-graded MOT, depending on traffic and ground conditions. Use Type 3 rather than Type 1: it carries the load while still letting water through, which matters on a surface whose whole purpose is to drain.
Compact it in layers rather than all at once.
Are grass grids suitable for emergency vehicle access?
Yes. Fire service access routes and emergency turning areas are a common application, because the surface takes the load when it is needed but stays green the rest of the time. Specify the depth against the heaviest vehicle that will use the route, not the average.
Do I need planning permission for overflow grass parking?
A permeable surface avoids the surface water run-off issues that govern impermeable parking areas.
Change of use may still apply depending on the site and how often it is used, so check with your local planning authority, particularly for commercial or event parking on agricultural land.
How much maintenance does a grass parking area need?
Mowing, feeding and the occasional overseed of any worn patches, which is to say the same as any lawn. There is no raking, no topping up and no resurfacing.
The grid itself needs nothing at all and carries a 25 year warranty subject to documented installation.
Ask our engineer
Questions about depths, sub-base, edging or which system fits your project? Ask below.
