Blurry Tree Fall from the Inside

Blurry Tree Fall from the Inside

Rooftop Sand Drifting Experiments

Experiments with site-specific and durational sculpture, in the form of human-engineered aeolian landscapes.

Site Plan

Experiment 1

Forcibly relocate existing drifts, partial drifts, and proto-drifts to installation site from Pacific Ocean-facing native site. Hoist up to tree-house level. Re-plant in designated areas.

Still and video documentation of site beforehand, at initial placement, day intervals, marking desired shapes. Try to set positions and shoot from minimum two angles/sites for each drift.

Experiment #1, Day #0, Site Location #1 Westward

Experiment #1, Day #0, Site Locations 1-3, North and Westward

Experiment #1, Day #2, Site Locations 1-3, North and Westward

Experiment #1, Day #2, Site Location #3 Overhead, King Low Tide to Sunset 4x

Experiment 2

Concept #1

devpac-roof-plan-2-triangleConcept #2

In planning phase. Potential changes:

  • Create a small, mirrored barrier to shape the deposition
  • Increase contrast with background, perhaps by rendering the background black.
  • Create open, semi-open, or arbitrailly-open structures to record or shape deposition
  • And what of overhead surveillance, passive monitoring?

Production Notes

Pulley systems. Design to gain mechanical advantage to roof for 100lb loads.

Structural weight limit. Assume an allowable load of 40lb / square foot. A 5 gallon, 1 foot diameter round plastic container weighs 53 lbs when filled to 10 inches, and 40 lbs when 7.5 inches. Normalizing to 80lbs/square foot. Thus, try to keep the drifts under 6 inches?

Wind load. In particular, securing sculptural objects in the face of 70-knot westward winds. Assuming wind breaks are a collection of loose objects on the surface of the roof, what weight or mounting is required to anchor them to the roof surface in the face of potentially significant horizontal wind force? Given a 6″ vertical face area around 12″ long, what is the wind load? What support system and mounting options would work?

For video, shoot on DSLR raw and then edit on linux. Compression via handbrake, and then once compressed time collapsing/expanding via ffmpeg tools for speeding up/slowing down audio and video, for instance changing the frame rate from 30 to 120 for a 4x increase. WordPress embedding YouTube hacks for autoplay, looping. See the helpful docs, yo.

What materials to use for outdoor sculpture? Metal frame, and attach to the structure of the roof? Or heavy, and use the weight of the plinth to hold down the meta-structure in the face of 50-70mph Pacific winds? What weight would be necessary to hold down a base plinth without being attached to the roof?

Using 16″ x 6″ blue acrylic wind breaks, secured via drilling and bolting on either side with 12-10″ 2 x 4 material, Krylon spray-painted black.

What surface on the wind breaks? Louvered would modulate the air flow. Laser-drilled could form patterns. Computer-modeling in opencv or openFrameworks is necessary to form precise shapes or gain insight into wind erosion.

Research Notes

Agnes Martin, Writings, Hatje Cantz Publishers, 2005
Daniel Buren, Sulle vigne: punti di vista (2001), Castello Di Ama
Félix González-Torres, “Untitled” (Placebo), 1991
Desert Breath, D.A.S.T Arteam, 1997
Today for Tomorrow, National Institute of the Conservation of Cultural Property
San Francisco Bay Tide Chart, 2014
San Francisco Bay Wind Patterns, realtime
Surfrider Foundation, San Francisco Chapter
Ocean Beach, Golden Gate National Parks Conservancy
Sand Dunes, National Parks Service
California Costal Comission, DRAFT Sea-Level Rise Policy Guidance
Terraserver, commercial satellite imagery.