Upgrading the building’s common property requires a special resolution (under section 108 of the Strata Schemes Management Act) at a general meeting. So work out when the next general meeting is scheduled – which is likely to the the next Annual General Meeting (AGM) that normally is scheduled around 2 months from the end of your building’s Financial Year – or around a year after the previous one.
You need to propose a motion to go on the Agenda for the general meeting. Check out the wording of the motions in previous AGM Agendas for a template. Artificial Intelligence will probably provide an appropriately worded one, if you feed it a previous Agenda, and explain / prompt the purpose. Then send the proposed agenda motion to the strata committee secretary, and your strata manager, and request it be added to the next general meeting agenda.
Now, a special resolution requires that the majority of the owners at the general meeting support the motion, while “not more than 25%” oppose it. So you basically need 75% of the owners attending the general meeting to support it, to be successful. To improve your chances, you should get quotes and proposals – and provide this to support your motion. Ideally you should get at least 3 quotes , and 2 are mandatory if the project costs $20k or more. If you have a good idea about what you want, your motion can cover this – ie, the motion can have parts, – part one that the OC install bike racks at a specific location of a certain type (you fill in the details), and part two, that the OC accept a quotation from X to install a certain model of bike rack at a cost of $Y. Or you can put different options in the motion, and allow the owners to select whichever they want (perhaps at different price points?).
The finally, prepare for the meeting. Talk to the other owners, and encourage the ones agreeing with you to come to the meeting, or provide a voting proxy. Do your numbers, to ensure that 75% will agree to support the motion. Or sweeten the deal – as Jimmy-T suggests, you might more easily get 75% support if you pay for the upgrade yourself… And prepare to argue your case before and at the meeting.