Sunday, December 8, 2024

Chief Architect Layout Notes

 A set of drawings created from a Chief Architect model uses the Layout to place views on "paper." I can print 11" x 17" (also called "Ledger," "Tabloid," or ANSI B), which can fit a 1/8" scale floor plan. Some folks tell Layout the sheet is 22" x 34" (ANSI D) and then print at 1/2 size.

Back in the day, we used 24" x 36" (ARCH D) paper, which would be ANSI D with an 1" all around. ARCH D is not equal to ANSI D and Chief Architect invites you to make this mistake.

Let's say the Layout is ANSI D (22 x34), with a 1" title block on the right. 1/2" margin, with 1" at the left, leaves a drawing area of 21" x 31 1/2". We'll print things at 1/2 size.

Grid

Drawing Area: 21" x 31.5" Peggy created a grid for details and other subsections--let's do that.

Height. 2 @ 10.5", 3 @ 7", 4 @ 5 1/4"

Width. 3 @ 10.5", 4 @ 7 7/8", 5 @ 6 5/16"~, 6 @ 5 1/4" 

Site Plan

My property is 90' x 135.52', but with some entourage (it's 30' to the centerline of 118th St) we need about 100' x 175'. Given the sensitivity of Carkeek Park and the gazebo which may or may not be permitted, I'm thinking I should cut the south end of the property off. 100' x 157' still shows most of the backyard and the SW property corner.

With north up, the site plan on a 21" high drawing area:

1:120 (1" = 10') - 15.7"

1:96 (1/8" = 1'0") - 19 5/8"  <-- Use this. North property line 50' (6 1/4") down from top border.

The width, 100', will be 12 1/2" at 1/8"--two width units, leaving two. Center it 7 7/8" from the left border.

Floor Plan

The ADU project is 20' wide by 42' high, with other things outside the walls. At 1/4" scale, that's 5" x 10 1/2", with dimensions and other things, maybe 9" x 15". This means two plans on a sheet with north up. Demolition, Foundation, Floor Plan, Roof Plan.

Elevations and Sections

Elevations are no higher than 16' (4" at 1/4" scale), so we can pack 4 rows on a sheet, or only 3 for more space. West is the big one--it's 10 1/2" wide. We can fit North or South (5" wide) on the same row, but East and West don't fit with any room to spare.

NORTH            |            WEST

EAST (with Breezeway section)  |   SOUTH

E-W SECTION |          N-S SECTION

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