Manasara 11.9

11.9

pūrvamadhyamaharmyaṃ caikabhūmikamidamuktam
viśālārdhādhikamutsedhamutkṛṣṭaharmyamekatale

this is called the formerly mentioned intermediate edifice of a single storey.
When the height is increased by half of the width, it is the superior edifice in a single storey;