is advantageously inserted e g an insulating strip of few millimeters to few centimeters thickness e g 1 cm to impede a thermal bridge furthermore a tolerance element 7 is loosely laid out on the steel frame which tolerance element compensates tolerances e g of the floor of the assemblies built onto the floor e g a conservatory and or a building to which a conservatory is annexed this kind of tolerance element is advantageously made of plastic or wood and additionally impedes a thermal bridge between frame and assembly the ground anchor 2 comprises two opposingly arranged anchoring elements 9 which are shovel shaped or triangular they are with their wider side facing upwards arranged laterally on a central tubular anchor element these anchoring elements 9 retain the ground anchor in the soil and anchor the frame construction that is fixed to the ground anchor or to the several ground anchors and thus anchor the floor system the ground anchor is advantageously made of metal e g of steel and may if required also be fixed to a longitudinal side of the steel frame the anchoring elements may be arranged flexibly such that when positioning the ground anchor e g by means of driving into the ground e g into soil they lie closely against the central elements and do not take up their strutted position until they have reached their final anchoring position in a preferred embodiment of the ground anchor the anchoring elements are connected via a thread mechanism e g a threaded rod which leads through the central anchoring.