Bees build sheets of combs starting from the top, attaching the combs to an available object from underneath, e.g. under a cross bar in a house wall cavity, under the lid of a compost bin or possum box, under a tree branch or the ceiling of an enclosure.
Progressively the bees extend their combs downwards and add new sheets of comb to both sides, hereby attaching parts of the combs to the side walls, giving the combs more strength.
Honey is heavy and wax looses its strength on a hot day. Incorporating available structural objects into the construction, like tree twigs or power cables (in house walls), as well as attaching parts of the combs to the side walls, gives the comb structure more strength.
Sheets of comb
Would a beekeeper provide a swarm of bees with an empty hive (bee box) the bees would start building combs under the lid, side by side, in a way that suits them best and attach them to the side walls as well. After a short time of comb construction the hive could not be opened and the combs not be removed without destroying them.
Remember?Keeping bees in Australia is only allowed in hives with removable combs.