Assignment A Part A I would suggest the use of either two boom gates on each of the points to be blocked or bollards that retract into the ground when not required. Give that the blockade is to be manual the entry and exit procedures will be the same with the person to move the block then replace after. If boom gate is to be used then it should use a steel column for strength and an aluminium gate with counter balance for ease of moving. If bollard is used it should be either powder coated or galvanised to prevent rusting. In both cases it should be easily visible to prevent accidental collisions. Daniel Farrugia Part B SBR security solutions ZoneGuard - Manual Boom Gate ZoneGuard has the following product features: Ball bearing shaft for smooth, silent operation. Spring-loaded positive mechanism at both ends of travel. Fully counterbalanced for ease of use. Soft stops at both ends of travel. Class 2 reflective striping fitted to the post and boom arm. “Breakaway” bolts to avoid mechanism damage in the event of vandalism. All steel components are zinc plated for superior corrosion resistance. Specifications Boom Arm Length - 5 metres as standard (other lengths to order) Boom Arm Material - 80mm O.D Aluminium Tube, 3mm wall Spindle Bearing - 80mm deep groove ball bearing End Stops - Cammed action onto urethane bush Locking Mechanism - Spring Loaded, hardened alloy steel pin Breakaway Bolts - 4 x M8 nylon to fail at 60 KGF Shipping Weight - 47kg Mounting Holes - 4 x 11mm diameter to suit M10 x 30 Grade 8 bolts Optional Mounting Post Mounting Post (opt) - 150mm x 100mm steel RHS c/w pressed steel cap Base Plate - 10mm mild steel base plate Boom Arm Height - 1100mm above base plate Shipping Weight - 28kg Mounting Holes - 18mm diameter holes for 16mm Chemical Anchors Daniel Farrugia Securapost bollards Retractable bollards are designed for medium security applications such as traffic and parking control. (Note: Retractable should not be used where high security locking is required, such as car yards etc. For these applications insurance companies insist on our “Cam-lok” removable bollards). Using the unique ‘T’ handle key to access the internal locking mechanism simply lower the bollard into the in ground casing. Fast – Simple – Trouble free Specifications Description: Retractable bollard for vehicle access and parking control. Material: Bollards 90mm diameter with 5mm wall mild steel. In ground casing 140mm diameter with 5mm wall mild steel finish: Bollards powder coated safety yellow. In ground casing hot dip galvanised. Height: Above ground 900mm. Below ground 1150mm. Shipping Weight: BR900 36kg Locking: Unique internal locking mechanism with ‘T’ handle key. Tamper and foul proof. Installation: Excavation and concrete footing. Daniel Farrugia Design standards for boom gates are generally between 3 and 6 metre. Most use aluminium poles with a steel column. More expensive models incorporate breakaway security to prevent excessive damage to both car and gate when impacted. The bollards are generally 900 height and use galvanised steel. They have different wall thicknesses for different levels of security. I think the bollard is a good option to consider because it is easy to open and close. The retractable bollards are well protected from vandalism and damage. It is easily visible when extended. It is strong enough to with stand cars hitting it. Relatively low maintenance and doesn’t get in the way when not required. There is no chance to it coming down and hitting a car like a boom gate can. Daniel Farrugia