Install railings on any deck that is 30 inches or more from the surrounding surface and on at least one side of a stairway leading to the deck. The top of the handrail should be at least 34 inches but not more than 38 inches high.
The SI base units. The International System of Units (French: SystÃ¨me international d'unitÃ©s pronounced: [sistÉm ÉÌtÉÊnasjÉnal dynite]; abbreviated as SI) is the modern form of the metric system, and is the most widely used system of measurement. It comprises a coherent system of units of measurement built on seven base units.
The current international standard metric system is the International System of Units (SystÃ¨me international d'unitÃ©s or SI) It is an mks system based on the metre, kilogram and second as well as the kelvin, ampere, candela, and mole. The SI includes two classes of units which are defined and agreed internationally.