GE Discovery NM/CT 670 - Floor Requirements; Floor Strength

Equipment Description and General Construction Requirements 2.3 Room Structural Requirements
2.3.1 Floor Requirements
Discovery NM/CT 670 – Standard Integration Instructions
5483063-1EN, Rev.2, ©2015 GE Healthcare 2-27
2.3.1 Floor Requirements
2.3.1.1 Floor Strength
In order to enable system mounting using the supplied floor anchors, concrete floors must have
a minimum cube strength of f'c = 4350 psi (30 MPa) at 28 days (curing time) for 25/30 concrete
and must be at least 166 mm (6.5") thick.
It is the customer’s responsibility to have appropriate tests performed to determine and measure
concrete strength, and to obtain a construction engineer’s assessment of the floor load capability.
IMPORTANT
It is the customer's responsibility to have appropriate tests performed and to obtain a construction engineer’s
assessment of the floor’s suitability to meet the requirements of this section.
NOTE
 Concrete strength is determined by the “Cylinder Test” (used in the USA) or “Cube Test” (used in Europe), where
a cylinder or cube of concrete is cast, cured for the appropriate time and then compressed between two parallel
faces until failure. The stress at the failure is taken to be the compressive strength of the concrete. The 25/30
concrete required for the system installation is concrete with a strength of 25 in the cylinder test (resulting
3625 psi), or strength of 30 in the cube test (resulting 4350 psi).