(5) ‘Utility system’ means a set of equipment, installations or utility lines that are required for the functioning and use of the construction work and for ensuring its safety, including all structural elements required for the functioning of such equipment, installations or lines., (5) Tehnosüsteem on ehitise toimimiseks, kasutamiseks või ohutuse tagamiseks vajalike seadmete, paigaldiste või kommunikatsioonide kogum koos vajalike konstruktsioonielementidega., defined within the scope of all Estonian legal instruments, defined within the scope of all Estonian legal instruments