Does this mean I canât ever say âciao?â Of course the answer to this is no. Youâll hear ciao being said all over Italy â itâs an incredibly common greeting throughout the country. But if youâre paying closer attention, youâll see that itâs almost always used between people who know one another or are in the same peer group.
In building construction, a plenum (pronounced PLEH-nuhm, from Latin meaning full) is a separate space provided for air circulation for heating, ventilation, and air-conditioning (sometimes referred to as HVAC) and typically provided in the space between the structural ceiling and a drop-down ceiling.n buildings with computer installations, the plenum space is often used to house connecting communication cables. Because ordinary cable introduces a toxic hazard in the event of fire, special plenum cabling is required in plenum areas.
3 4.2 As a general rule of thumb however it will be necessary to provide ventilation to a roof void fitted with breathable felt under the following circumstances, a) The breathable membrane is fitted tight across the rafters and no counter battens are fitted.he risk of condensation is however greatest when there is a significant drying out taking place and cold temperatures. 14.2 This may in some circumstances lead to condensation during the first heating season, but should not persist into the second heating season in a properly designed and constructed roof.