Our services

Container Stacking

Optimise Your Space On-site with a Stack

Modern construction sites are often small, and therefore it is necessary to maximise every bit of space that you have for your site accommodation units. One way that this is possible is by container stacking. We build our units so that they can be double stacked to optimise ground space, and fully utilise the useable area on site.

What units can be stacked?

Willbox have based the majority of our site cabins on the 20' x 8' ISO Shipping container. Using shipping container conversions for our site accommodation units means that they are perfect for container stacking as they have an ISO container frame, and ISO corner casts to easily and securely lock the containers together.

Securing a stack

Stacked containers and site accommodation units are secured using either locating pins or marine twist locks which are inserted in to the corner castings of the ground level unit.

Is it safe to stack?

Stacked units are approved on all major construction sites, and many of the main contractors will stack their own units too. We consider our site accommodation units and cabins to be the entirely secure as we use converted containers to ensure the units sit flush on one another, and are therefore completely safe.

How do the staircases work?

Willbox use a 13 tread, steel staircase which has a landing platform and steel legs that meet the floor. The landing platform has railings all the way around, and down the steps, and it is connected to the base of the stacked cabin. If you would like to see examples of our double stacked cabins with stair cases, flick through the gallery above.

How long does stacking take?

Depending on the space to manoeuvre on site, it should take under 1 hour to stack the units and assemble the staircase. Our drivers are fully trained to operate our hiab crane vehicles (required for loading and off-loading the cabins) and they have many years' experience stacking cabins on site. Our drivers will not leave the site until the stack is safely secured, and you are happy with the set-up. Stacking containers or cabins is required to be double manned. Willbox can provide a 2nd man on site to assist with the stacking as an added cost.

For more information on our site accommodation units, and how we stack our cabins, please don't hesitate to contact our friendly team via the options on the right.

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Download our Guide to Container Stacking

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