Umthombo waphansi ufakwe ngaphansi komhlaba onomhlabathi ojwayelekile, uhlobo olusebenzayo lomthombo waphansi kungaba kokubili umculo nokulawulwa kohlelo futhi lusetshenziswa kabanzi esigcawini somphakathi, ehhotela, endaweni yokudlela, enxanxatheleni yezitolo, endaweni yesehlakalo se-office tower, njll.
