For the most Architectural Design firms, it was time to change from hand drawing to CAD planning in the and I used AutoCAD and since 7 years EliteCAD. But for the pre Design I still perform with hand sketches - best results within minutes
Great example of quick sketching, this technique could be used in initial sketches to portray ideas and visions, great use of continuos line.
archisketchbook - architecture-sketchbook, a pool of architecture drawings, models and ideas - fabriciomora: HOTEL IN GDANSK by Pawel. - I am in love with this.
Sketches for the Edificio MOP Rancagua in Rancagua, Chile by Iglesis Prat Arquitectos Tau 3 Arquitectos
A good example of sketched ideas for a new skyscraper in architectural elevation.