gfrank
Guest
@ giga
the use of mm, cm, or meters (with two decimals) in the construction design should not be traced to the "intrinsic accuracy" of the design, but to the use that is made.
a first factor that determines the use of cm or meters (with two decimals) is consequence of the use of the drawings in the yard.
the precision of the millimeter is not required, as the operators (muratories, carpenters, hydraulics, electricians) of the yard and the methods of execution of such works (made in operation - in the yard) do not need precision (tolerance) to the millimeter.
other discourse is the precision of the design, that the various views (plants) must correctly overlap. the various floor walls, if overlapped, must have the same position, etc.
but this is a "problem" of the "designer/designer" that "draws lines" and not measuring units.
the ancient "science" of the technical design, imposes some rules, that nowadays (in some cases) are not respected, creating here problems mentioned above. For example, in the presence of pillars, beams, etc., reference "assis" must be used; the quotas of the sections (wall) must be supported by the total quota (first and the same end); windows must be listed on the half-axis; etc.
with the advent of the latest generation cads (both 2d and 3d) such "errors" are increasingly rare, as, as above was said, the various software have "internal tools" that help the "signor" (assis, origins, etc.) to perform the correct graphic representation.
I add, that using a sw 3d, the correct representation is supported by the "eye button" of the 3d view, which facilitates the verification of the design.
the use of mm, cm, or meters (with two decimals) in the construction design should not be traced to the "intrinsic accuracy" of the design, but to the use that is made.
a first factor that determines the use of cm or meters (with two decimals) is consequence of the use of the drawings in the yard.
the precision of the millimeter is not required, as the operators (muratories, carpenters, hydraulics, electricians) of the yard and the methods of execution of such works (made in operation - in the yard) do not need precision (tolerance) to the millimeter.
other discourse is the precision of the design, that the various views (plants) must correctly overlap. the various floor walls, if overlapped, must have the same position, etc.
but this is a "problem" of the "designer/designer" that "draws lines" and not measuring units.
the ancient "science" of the technical design, imposes some rules, that nowadays (in some cases) are not respected, creating here problems mentioned above. For example, in the presence of pillars, beams, etc., reference "assis" must be used; the quotas of the sections (wall) must be supported by the total quota (first and the same end); windows must be listed on the half-axis; etc.
with the advent of the latest generation cads (both 2d and 3d) such "errors" are increasingly rare, as, as above was said, the various software have "internal tools" that help the "signor" (assis, origins, etc.) to perform the correct graphic representation.
I add, that using a sw 3d, the correct representation is supported by the "eye button" of the 3d view, which facilitates the verification of the design.