5. A given list of available industrial products that can 
be used for the hardware realization. Part of them 
can be used for the construction of the network 
(infrastructure); another part for the individually 
inserted "envelopping" volumes, 
The conclusion of admitting these criteria was the 
choice of a determined network with a given mesh size 
(crit. 1) in several levels, The mesh size was fixed 
following the contextual volumes; the number of levels 
by the level multiplication factor (crit. 3). The payload 
brackets (crit. 4) imposed that the ground level should 
ve used for the large mesh units with heavy payloads; 
the lifted levels for the small mesh units with the 
smaller payloads, 
As mesh variety was desirable because of permitting 
arbitrarily chosen grouping, the (5), (6) or (4) networks 
were considered, As conductibility was an imperative 
necessity, the (4) network was imposed, By admitting 
use of "halved meshes" the mesh variety of the (4) 
network was made equal to the mesh variety of the (5) 
network, 
Actual industrial techniques and appropriate economical 
considerations imposed a triangulated species of the (4) 
network for the hardware proposal, both beeause of the 
implied transport economy of materials and the 
reduction of the site qork factor. The chosen network 
was a space network derived from the (4) network by 
substituting hyperboloids of rotation of one sheet for the 
points of the network; then substituting two families of 
four lines drawn on the hyperboloid’s surface for the 
surface themselves (see figure). 
ARCH + 1(1968)H2 
The result was what | called a "spatial infrästructure", 
What I am calling the "spatial town" is the set of random 
(or regular) variations of assemblies of inserted volumes 
within this infrastructure, 
My purpose here is not to give a description of the 
“spatial town" (as this has been published many times in 
nearly all countries with sufficient illustrations), but I 
have tried to present an example of how to arrive at a 
personal solution of a complex program by the "complete 
list" type of analysis, On the other hand, this personal 
solution (a typical case of the decision architect/ 
planners of tomorrow are supposed make) is one 
respecting all other persons’ arbitrary personal choices , 
The infrastructure does not impose any form or grouping 
on the particulars using it, and out of no more than 
three different modular elements, such as produced 
today as industry’s stock elements, one could compose, 
for example, more than two million rational variations 
of one-level three-room flats, 
| will close this seminar with the remark that I do not 
consider this method as a rigid one, but more as a 
beginning of an ordering process in architecture/ 
planning. Architecture was always a discipline of 
ordering, and we know today, as well in other fields, 
that disorder is not imaginable by the human brain and 
every brain activity is essentially an ordering activity 
(we cannot even invent "disorder systems"), A 
disordered set of knowledge is only an unordered one, a 
result of shear ignorance . 
Paris, October 30, 1967, 
34