02_DesignPH_Shading

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Nov. 11, 2017

DesignPH – Orientation & Shading Webinar. June 2, 2020

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Ed May | Partner, Building-Type, LLC (architect, passive house consultant, teacher)

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Nov. 11, 2017

NYPH 2020 Technical Workshops

May 19th June 2nd

June 16th TBD…

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Agenda [1 hour]

DesignPH Review

Sketchup Geolocation

Sketchup Orientation and Axes

Sketchup Shading Evaluation

DesignPH 2.0 Shading Masks

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DesignPH Review

Requirements What you’ll need: • A copy of the DesignPH 2.0 plugin • Sketchup 3-D modeling software • A copy of the PHPP v.8 or 9 (and Excel)

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https://foursevenfive.com/designph-2-0/

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Sketchup

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Sketchup Extensions Manager

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Start DesignPH Plugin [Each time you run Sketchup]

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BASIC WORKFLOW

DesignPH Workflow 1) Model Geometry

2) Tag Model Geometry w/ Data

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3) Analyze

4) Export

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DesignPH Workflow 5) Import

6) Complete the PHPP

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Geolocation in Sketchup, Orientation & Axes

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Sketchup Default Orientation

By default, the Y axis (green) is pointing North

The X axis (red) is pointing East

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Geo-Locate Your Model

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Type in the Address or Find on the Map

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Zoom In and ‘Select Region’

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A Scaled Basemap is now in our Scene

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The orientation of the buildings don’t match the drawing Axes though?

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Draw a New Axes

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Draw New Axes X and Y

Drag Mouse

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Now Drawing Snaps to the New Axes

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Reset Axes to World Base Orientation Anytime

Right Mouse Click

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Sketchup Shading

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Site Shading Objects

Relevant Shading Context Modeled Axes Rotated to Match Building

~300ft (100m)

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Site Topography

This Geometry comes from Sketchup’s Geolocation Automatically

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Site Topography

Then draw in simplified shading planes to represent the hills. Don’t have to, but it’ll be much faster to calculate shading factors

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Site Topography

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DesignPH 2.0 Shading

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‘Old’ Style PHPP Inputs oover • • •

Overhang Geometry Side Reveal Geometry Objects in the Field of View

dover

hHori

oreveal

dreveal

dHori

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‘Old’ Style PHPP Inputs

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DesignPH 1.0 Shading Technique

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NEW DesignPH 2.0 Shading Masks Un-Shaded Areas

Sun Path

Shaded Areas

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NEW DesignPH 2.0 Shading Masks Season

Calculated Shaded Radiation

Calculated Unshaded Radiation

Winter

115.3

÷

158.4

=

0.73

Summer

124.2

÷

180.1

=

0.69

Shading Reduction Factor

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VV-Lo-Res (15 Rays)

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Hi-Res (90 Rays)

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Shading Mask Analysis Points

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Radiation Analysis Circumsolar Diffuse Diffuse Isotropic

Direct Beam

Horizon Brightening

Ground Reflected

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Radiation Analysis WITH NO SHADING

WITH SHADING

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Radiation Analysis WITH NO SHADING

WITH SHADING

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Radiation Analysis: East Window Example East Facing yields more morning direct-beam radiation

Noon

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Radiation Analysis: South Window Example South Facing shows more symmetrical daily radiation profile

Noon

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Trees?

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Trees: Winter Shading Factors

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Trees: Summer Shading Factors

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