The dsh Terrain Building Test

[gteacher]

Scott:

Chief determines that average then adds the floor1 platform height then adds 6" when using auto-calc

this height is where the house sits and is "house 0"
Lew

AVERAGE, AVERAGE, don't talk about AVERAGE!!!

Here are Chief's rules from the help.
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The program automatically positions Floor 1 a set distance above the terrain. To do this, it first finds the center point of the building footprint. Then, it determines the elevation of the terrain at that point. Finally, it adds 6” (150 mm) plus the thickness of the floor platform and treated sill plate to this value. The resulting value, referred to as the Building Pad Elevation, is how far the default height of Floor 1 is above sea level in the current plan. See Foundations and the Terrain.

In a plan with a foundation present, the Elevation distance will equal the exact terrain elevation at the building footprint center point, plus 6” (150 mm), plus the thickness of the floor platform.

• In a plan with no elevation data, the ter*rain is assumed to be at sea level and this Elevation distance is 6” (150 mm) plus the thickness of the floor platform when a foundation is present.

• In a plan with flat terrain at 100’ (30 m) and a foundation present, the Elevation distance is 100’ 6” (30.468 m) plus the thickness of the floor platform.

Once terrain has been built, the Elevation distance is stated in the Terrain Specification dialog. You can specify a custom Elevation value to produce a daylight or walkout basement. See General Tab.
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I just checked and Chief follows these rules

[lbuttery]

AVERAGE, AVERAGE, don't talk about AVERAGE!!!




Gerry:

hmmm, I took center point to mean average

thus, if the terrain varies beneath the footprint of the house
the house will be "nestled" within the terrain
some portions exposed - some portions buried

I haven't tested it yet but I doubt if chief looks for the actual center point and "hoists" the house on top of that point ???

I'll try a test soonest where there is a spike of terrain under the footprint
to see what happens

Scott:

I have attached two plans, one for your challenge where auto-calc is off and one where it is on

when auto-calc is off - chief doesn't use the center-point (average ?)
it goes by the absolute value entered in the pad elevation and the absolute date entered in the elevation data (region) dbx's

when auto-calc is on - chief uses the center-point (average ?)
plus floor1 platform height + 6"

Perry:

with a 12" platform this places the house 18" above the terrain


EDIT:

I posted the wrong auto calc plan

see post below with correct plan

Lew

[lbuttery]

In the above post I attached the wrong auto calc plan

here is the correct plan

Lew