BOLLARD

TECHNOLOGY: CAST REINFORCED CONCRETE

OBSERVATIONS:

• distinctive design, with the same modeling often used in different publicspaces; • often unnoticed by pedestrians (especially at nighttime); • sometimes used as seating; • performs its primary function of separating the pedestrian area and the road; • occupies a great portion of the width of the pavement; • vandal-proof; • can serve multiple purposes, i.e. limit vehicle access and double as a bench, a bicycle parking, or a street light.

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ANALYSIS:

MAINTAIN+REPAIR

REUSE+REDISTRIBUTE

REMANUFACTURE

potential decrease in amount of concrete

durable but solid, thus total replacement is needed when damaged

easy to relocate and reuse

unviable to renovate

potential use of shatters as fillers in concrete mixtures or other construction materials (with proper adjustment of the process) no need for fixtures, thus the structure is simple to install

easy to relocate with nonspecialised transport, yet the structure is hefty

can be stored at ambient temperature, yet the weight and the variety of shapes complicate the space-effective storage

DISASSEMBLY / ASSEMBLY

TRANSPORTATION

STORAGE CONDITIONS

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RECOMMENDATIONS:

• Decrease the amount of material to a bear minimum needed for functional use. • Opt for the more eco-friendly grades of with higher strength and durability and lower carbon footprint (embodied CO2) • The object must be clearly visible in space and must not obstruct the pedestrian traffic. • No unnecessary expanding in size, make the bollards as narrow as possible in order to claim least space of the pedestrian area. • Design added functions to limiting vehicle access: a flowerbed, a bicycle parking, or a street light, a seating, etc.

PROPERTIES:

Wood is a natural, renewable and recyclable material. As a rule, its processing doesn’t involve high technologies. This material has low heat capacity and high moisture sorption. It’s high maintenance yet easy to repair. Other properties include durability and sustainability, high efficiency in reusing and recycling, and natural decomposition.

RECOMMENDATIONS:

It is essential that wood production is efficient and circumspect. Material origins must be carefully traced, as unregulated logging causes river flooding and undermines biodiversity. High-quality coating materials are important, too, as they prolong the wood’s service life.