Hand-sketching as a tool for architectural design

The following sketches show the different development phases of some of my architectural projects. Hand sketching is an efficient tool that allows the simultaneous visualization of the general aspects that define an architectural proposal (spatial context, programmatic requirements, etc.), to the most specific (details and constructive solutions).

http://juanalmarza.cl/files/gimgs/th-20_img046_ch.jpg
http://juanalmarza.cl/files/gimgs/th-20_img043_cut_ch.jpg
http://juanalmarza.cl/files/gimgs/th-20_img039-original_ch.jpg
http://juanalmarza.cl/files/gimgs/th-20_20_untitled-1-large.jpg
http://juanalmarza.cl/files/gimgs/th-20_20_untitled-2-large.jpg
http://juanalmarza.cl/files/gimgs/th-20_20_untitled-3-large.jpg
http://juanalmarza.cl/files/gimgs/th-20_20_untitled-4-large.jpg
http://juanalmarza.cl/files/gimgs/th-20_20_untitled-5-large.jpg
http://juanalmarza.cl/files/gimgs/th-20_20_untitled-6-large.jpg
http://juanalmarza.cl/files/gimgs/th-20_20_untitled-7-large.jpg
http://juanalmarza.cl/files/gimgs/th-20_20_untitled-8-large.jpg
http://juanalmarza.cl/files/gimgs/th-20_20_untitled-9-large_v2.jpg
http://juanalmarza.cl/files/gimgs/th-20_20_untitled-6-large_v2.jpg
http://juanalmarza.cl/files/gimgs/th-20_20_untitled-1-large_v2.jpg
http://juanalmarza.cl/files/gimgs/th-20_20_primer-nivel-copy.jpg
http://juanalmarza.cl/files/gimgs/th-20_20_segundo-nivel-copy.jpg
http://juanalmarza.cl/files/gimgs/th-20_20_untitled-2-large_v2.jpg
http://juanalmarza.cl/files/gimgs/th-20_20_untitled-4-large_v2.jpg
http://juanalmarza.cl/files/gimgs/th-20_20_untitled-1-large_v3.jpg