Herculaneum Quay is a development of 101 luxury apartments, situated on the bank of the River Mersey. This 15 storey residential tower by Primesites Developments is a significant size construction project for Liverpool.
Because the construction site is located right on the banks of the Mersey, it is very exposed to everything the weather can throw at it. As the concrete is poured and floors are added, it will take some time before the permanent rain screen / glazing is installed. The main contractor, COREM, was looking for a temporary solution which would quickly make the building water-tight and enable them to proceed with the internal works in a dry & controlled environment.
The solution was to use a shrink wrap screen, applied directly to the steel and concrete frame which would wrap the building and provide protection through the winter months.
With a ceiling height of around 3m and with the supporting pillars set back from the edge of the concrete slab, Rhino Shrink Wrap were able to make a continuous 150m / 500′ run of shrink wrap around the perimeter of the building on a floor by floor basis.
Rhino Shrink Wrap building screens are made from the same materials as our ‘signature’ scaffold wrap. It is an LDPE film that is easily joined by heat welding and which shrinks very powerfully when it is heated – (this is the secret of it’s ‘drum tight’ finish.) As standard, our screens are white in colour and allow almost all daylight through to the interior of the building.
Our building wrap has flame retardant additives so that is meets the EN13501 fire retardant specifications and it has Ultra Violet inhibitors so it won’t become brittle when used outside. It is able to be used at a wide range of temperatures – we have used it in projects from Australia to Russia without any problems.
The installation of our shrink wrap building screens is quite straightforward, whether fixing to concrete or steel framed building, the process is the same.
The first step is to fix a run of wooden batten to the concrete or steel frame in the position where the shrink wrap screens are required. For a continuous run around the building, (where uprights are set back from the edge of the slab), this batten will be required along the ceiling and floor. Where the building uprights are directly adjacent to the edge of the slab, the shrink wrap will be installed on a ‘bay by bay’ basis and so batten will be required on the uprights also.
Once this ‘picture frame’ of wooden batten has been installed, the shrink wrap sheeting is cut to size and hung in position. A second run of wooden batten is used to firmly secure the shrink wrap into position and is screwed firmly into the first batten. If there are no uprights / pillars at corners then the Rhino Shrink Wrap installation team install and tension an industrial grade strapping at the corners around which the shrink film is wrapped.
Where a join is required between two sheets, this is achieved by overlapping two sections and using a hot air tool to created a bonded joint between the two sections. The final stage of the process is to use propane gas powered hot air tool to shrink the screens drum tight. This is achieved by passing hot air briefly over the surface of the shrink wrap sheeting.
One thing that contractors often ask when they start to look at building screens is what wind speeds will they withstand. Now, exact wind speeds will vary from project to project because it depends on the size of the bays and the types of fixings we are using but let me give you an idea. A Force 10 wind, which is a wind speed of 55-63mph or over 100kph will extern a force of 0.77kn/m2. Now a typical bay of a concrete or steel frame building is often in the region of 3.5m high x 6m long which means that in a force 10, there is 17.5kn of Force on that sheet. Well, that is well within the capabilities of our shrink wrap sheeting which has a tensile strength at yield of around 26Kn. This means that sheeting can experience Force 10 winds and bounce back to it’s original taught state.
The Rhino Shrink Wrap team installed temporary weather protection around one floor of this high rise concrete and steel frame building each week. For the construction contractor, the ability to start the internal works before the external cladding and glazing is finished has brought a number of benefits – the projects are easier to manage, schedule, and the risk of delays and penalties is reduced.
Thank you for taking the time to read this case study. Please do contact us with your questions or comments. We look forward to hearing from you.