As part of a £96m development at Leeds University, secure access was required from the front to the new Sir William Henry Bragg Building - one of the key buildings on the campus of the key buildings. The controlled access was needed for deliveries whilst also protecting the area from unwanted vehicles. Access would be restricted by the use of automatic rising bollards, which would be controlled from the building's reception desk and linked to the building fire alarm, which would automatically lower the bollards if activated.
275/P800 automatic hydraulic bollards from Macs Automated Bollards were used for the project.
The integrated bollard hydraulic pump is fitted with a solenoid valve wired to the fire alarm, which enables an automatic lowering in the event of a fire alarm being raised. The pump also has an integrated safety pressure switch and if any pressure is detected during the raising process, the bollard automatically lowers, reducing any damage to vehicles.
The bollards are controlled via an intercom, supplied and fitted by TIS, who look after access control and fire detection equipment on campus. Users approach the automatic bollard installation and stop in the designated area; they press the call button on the intercom, which connects to a telephone in the reception area. If access is permitted, the receptionist presses a key on the telephone keypad, which commands the bollard down. Once the vehicle has cleared the automatic bollard – and a series of induction loops – the bollard raises behind the vehicle.
Exit through the installation is provided by a ‘free exit’ induction loop system. Users approach the structure, and when their vehicle is within five metres of the bollards, the bollards automatically lower. Once the vehicle has cleared the bollard – and a series of induction loops – the bollard raises behind the vehicle.
- Macs 275/P800 Automatic Bollard
- Size: 275mm diameter; 800mm high
- Finish: stainless steel
- LED Strip Red
- Safety pressure switch
- Automatic lowering solenoid valve
- Integrated hydraulic pump
- Cylinder wall: 6mm
- Rising speed: 17cm/s
- Lowering speed: 32cm/s
- Impact resistance 40,000 J certified
- Breakout resistance 250,000 J
- Life units: 3,000,000 cycles