Every year, we are given promotional calendars by our two pump suppliers – Putzmeister & Schwing. Being concrete pumping nerds, we pore through them to look at the pumps and pumping contracts that are featured. Some years Putzmeister has the best calendar and some years it is Schwing’s offering that interests us the most. This year we definitely prefer Putzmeister’s calendar because … April’s page shows Camfaud’s base pour at the Brighton i360. We will have to see if we can get a job featured in the 2017 Schwing calendar!
We have recently taken delivery of two new Schwing mobile boom pumps. These have now been through our workshops and fitted with all of the additional equipment / signage required to make them Crossrail compliant and to compatible with our FORS Silver accreditation.
The first pump has a 24 metre boom, in Schwing terminology an S24X. The pump unit is a P2020 giving a maximum of 90m3/hour and up to 70 bar line pressure in the standard configuration. We consider this pump to be the workhorse of the fleet. The M24 boom is the most popular size with a broad range of our customers; it is very versatile and is suitable for working inside a building as well as out in the open. As with all of our pumps, it is mounted on a Mercedes Benz truck in this case a 330bhp, 3 axle Arocs chassis. The Arocs range is designed to be robust enough to withstand the rigours of the construction industry.
In addition to this pump, we have also taken a new 20 metre boom pump. Our M20 is the latest iteration of the Schwing S20 boom, designed with a very narrow outrigger spread to work in the tightest of spots. In the fullness of time, we believe that this model will supersede our M16 boom pumps and become the new City Pump.
In December, Camfaud poured the main span of the bridge. Two M36 boom pumps were supplied and were set up either side of the river on the temporary jetties that had been built to accommodate the plant needed to construct the bridge.
Both of the pumps were equipped with a one side support (OSS) system that allowed them to set up on the narrow jetties. This system made it possible for the pumps to short rig on the off side whilst extending the outriggers fully on the working side. The OSS system prevents the boom from slewing into the unsupported area and so the pumps were completely stable at all times.
The two pumps worked in tandem all day with the concrete initially being placed at the centre of the bridge span. As the pour progressed, the two booms worked outwards thus ensuring that the loading, imposed on the bridge by the concrete, was balanced across the structure.
For this technically challenging and project critical pour, Camfaud supplied two of their most experienced pump operators who, between them, have over 50 years experience pumping concrete for Camfaud.
In an article about the iconic i360 tower currently being built on Brighton’s seafront, Boxing Day’s Observer illustrated the story with a stunning photo of the podium slab being constructed around the tower, with one of Camfaud’s 47 metre boom pumps in action. The photo, which can be seen in greater detail here, shows the start of the pour early one morning in October 2015.
The tower is due to open to visitors in June and, if the aerial photograph used in the Observer story is anything to go by, the views from the i360 visitors’ pod will be stunning.