Most camping tents use aluminium or fibreglass poles to support the nylon materials. Typically speaking, fibreglass poles are lighter than the aluminium but are more prone to cracks and breaking. Aluminium poles are stout and provide good support for tents exposed to high winds and snow. Changing your tent poles from fibreglass aluminium requires the pole length and diameter.
Take the measurements for the poles to be replaced. Measure the length with the tape and count the number of rod blanks that comprise the pole. Look at the poles to locate the diameter measurement, typically given in millimetres. Look at the end of the rod blanks for this info. If not present, consult the tent owner's manual or instructions.
Log onto the Internet and locate outdoor gear retailers or tent retailers. Enter in "replacement tent poles aluminium" into the search field for the store and locate the replacement options. Select an aluminium replacement set of poles for your tent. Some stores have information fields for the tent maker and model as alternate methods of finding replacement parts. Enter accordingly.
Gather your fibreglass poles and go to an outdoor gear store or retailer and ask for replacement aluminium poles, presenting the old poles for the reference. Use this option if you wish to use brick-and-mortar stores versus online ordering.
Place the replacement poles onto the tent in the same fashion as the fibreglass poles.