Meeting Minutes Dec 8th 2009

Meeting Minutes:

Participants: Mark, Martin, John, Eric, Aaron, Carina, Charlie, Lisa

Date: Dec 8th, 2009 2pm

Summary of Discussion:

Review of cover system components:

We have two distinct environments on the flat areas. There are two shallow areas which would have membrane, root barrier, dense fabric, irrigation on a 4' spacing within a 2" layer of a light weight granular and then a filter fabric and then a growth media of various depths. There are other areas that are uniformly 12" thick. In these areas we would put a drain panel, granular media and separation filter fabric, growth media and irrigation installed much closer such as 18" apart. this irrigation would rest closer to the top of the growing media.

We also have the steep areas

the first approach is a low permeability sheet train by epro with growth media and irrigation close the surface. On the steeper areas would require a soil confinement web which would be 8" thick and would tether to the anchors or upper geo grid on the surface this would be true for the 1:1 slope case. These steep slopes would also require a coco fiber mat to hold the soil in place until the plants become established

The areas that are decomposed granite paths would be placed over a sheet drain and a granular material and separation filter fabric so the water can flow underneath the paths.

For slopes stabilization and sheer forces we are measuring the average thickness of the growth media. if it is a 12' layer the vertical pressure on that slope is approximately 80 lb. on the slope. So we could in reality only have a depth 8.5 inches to meet the engineered requirements.

we are assuming 45 or 30 degrees as this is close to two existing cases. If we determine to put in anchors we may as well design for the maximum weight.

We are also assuming that we will use to media types throughout the roofsystem.

charlie explained that most roof failure is a result of fabric/ fabric slide. Mark described as mini tectonic shift.

Budget, CD'S:

Mark would like a clear picture of cost before he makes any decisions. Charlie is confident that the budget we produce at the end of december will be accurate and sufficient for mark to make decisions.

Design Build Clarification:

Roofscapes acts as a specifier and more of an enforcing agency to ensure that the roof is installed as it was designed. please see email sent 12.09.09 with more detail

Slope stabilization :

we are currently looking at two systems an anchor system and a geo grid system. There is quick calculation charlie can do that will determine friction of the soil and will calculate the resistance of the force and determine the overbalance on the downward force of the slope with the geo grid esteems as it should keep everything in place. there needs ti be a bit more thought in this area. We will evaluate cost and security of each option and will keep mark abreast of any decisions.

Martin provided clarification on parapet walls and we will work on the detailing over the next few weeks. The entire deck will be waterproofed and then the walls will be poured with an extra layer up against the walls. The root barrier will not work to go underneath the parapet walls. The scuppers were discussed and everyone seemed in agreement that fewer larger ones are better an that they need to be sealed as well.

The question of the 30 mil root barrier came up again. Charlie and Lisa recommend the 30 mil and the Roofscapes warranty will not be able to include any part of the waterproofing if it is not 30 mil. The 30 mil is easier to hot weld than the 15 mil. Mark would like to review the total budget that will be provided on Dec 21st before he decides on which to choose.

Park areas:

We are responsible to restore the park areas to the state they were before. The lower landscape areas need to be coordinated as they are on same water system as the building and roof.

The areas to restore are the area by the trailer, the pavilion and these need to be returned to sod. The internal areas can be seeded or sod.

Action Items:

1.Charlie will coordinate with Belzberg to get details and decisions made on the drainage design and anchoring system

2. Evo and Charlie will coordinate with Martin on schedule and providing what he needs to move forward

3. Lisa and Karla will also provide CD's by Dec 21st of the on ground landscape so that it can be bid at same time.

4. Martin will provide schedule of items that need to be addressed by when

meeting minutes

Meeeting Minutes: DEC 1, 2009

Participants: Dave EPRO, Martin, Aaron, Charlie, Lisa

Summary of Discussion:

Drainage Board: Charlie discussed using a capillary system for irrigation on the flat areas with an 8" depth. On steeper and deeper areas and overhead. The sheet drainage board and the capillary system are incompatible, as you want the water to go up to the plants.

Root Barrier: Charlie would prefer 30 mil low linear hot air welded as will perform better with aggressive plants like grasses.Right now Dave has bid 15 mil poly ethylene which has been used with methane gas barriers.

Dave will communicate to see how much this will change the bid. The cost is 23 cents more than the 15 mil.

The approach of the coating the walls and protecting them was discussed.

Anchors Systems:

The anchors will interrupt the root barrier. Some can be attached to the exposed beam on west wall and the others will need to go into the parapet walls. Charlie discussed building retention from the bottom with rigid panels which would not work on the steep side as the sign curve will not work. The best choice will be to anchor to the slab and the parapet walls. The anchors should be at the farthest 18" apart.

Charlie will send a drawing of how this works.

Drainage:

there will be rectangular scuppers in slope cross cutting walls. Charlie needs a clear picture of where the drains are located exactly so he can locate and make suggestions and direct the other ones. The paths will be done on top of a drainage board. The paths will be 3 inches of gravel with a 2" top dressing of DG. This will sit on top of the drainage board. The water has to be on the lowest most level to go through the sheet drain The sheet drain is pegged and then filter fabric is added above. There is no requirement for insulation. Charlie is unclear how the water will move on the southern most edge a trench drain is located there and will need to be sized accordingly. Conduit will need to be added to go through to the channel drain.

action items:

1.Aaron will provide drawing with exact drain locations

2.charlie will proved drawing of scupper and other proposed drainage

3.charlie will provide a cross section of roof layers and how the capillary drainage will work

4. lisa and aaron and charlie will work on soil depths and grass height models

5. dave will provide updated pricing for martin with 20 year warranty, and 30 mil liner.

meeting Minutes 11.24.09

Call Participants: Mark, Aaron, Karla, Lisa

Time: 2-3pm PST

Summary of Discussion:

We discussed park area on east side and bus stop areas as a place for tree donations, mark had commented that the consulates are intrigued with the olive trees and contributing in that manner.

we are exploring opportunities for an allele or colonnade. We also discussed william the engineers concerns and comments. There is 46 sq/ ft available depth can be 6"-42"

Aaron and mark had several comments on soil depths.. ant to see more fluid and accentuate parapet walls and utilize radiuses. It has a map like quality and want to keep that yet soften a bit

Also looking at how this feels from the park and grove view on the southwest corner. Want to incorporate this feeling of being manmade, somewhat different and hi-contradictory soft, less defined different. Lighter and more ethereal is what Lisa added. We also discussed seasonality of the grasses and the changing of the garden.

Mark noted us to his comments on an earlier post….

"I see you've modified this page somewhat. I was looking to show my 11 year old son the image that was up yesterday with several plants bubbled out and lines connecting to where they would be planted. Now the bubble image only has a few plants.

I think his initial reaction to the garden renderings is important: "Whoa. Scary." My response was a little more measured, 'too furry,' and thus not as helpful. I'm leaning towards something that feels more managed.

Let's keep in mind an important part of what our Museum does. Granted, the core of our exhibits chronicle the worst of human action. But the fact of the Museum is also healing. We take the terrible material and we control it, frame it, give it a beginning, middle and end. In this way we create opportunities to move beyond it.

The garden should reflect this kind of framing. It thus needs to appear manicured. Or at least there should be a tension between the manicuring and the overgrowing that is resolved towards order, control, a sense wrong set right."

This is to be memorialized forever and protect artifacts, providing a smokescreen or protective barrier. The survivors have a desire to frame their memories, artifacts and items. They want to preserve them and keep them safe and protected to create a feeling of "it can't hurt me any more.."

Visitors are welcome to come and leave. It is a safe place to keep these as you can view them but you don't have to take them with you.Mark emphasized the beginning middle and end.. a healing.

"we don't heal when we wallow, we don't heal when we forget, we heal when we find a middle ground"

we want to frame it so we can have a life outside of trauma. There could be an analogy with the agaves. lisa and Karla will explore this more in depth. MArk liked rosette shape of the agave prynnii

Another item to be discussed is the parapet walls leading into concrete curbs surrounding the internal beds. A barrier is needed for maintenance and longevity.

Action items:

1. Aaron will speak with martin about adding a curb around areas 4, 11, and 12 that will separate the beds from the DG paths.

2. Aaron will coordinate with Roofscapes on Drainage

3. Lisa and Karla will provide a seasonal study, landscape layout with olive tree allee/colonnade , and a revised soil depth plan.

4. Lisa and Karla will research more accent plants to find the one that is a perfect fit.

5. Aaron and Lisa will collaborate on soil modeling

Note: Karla will be out of town until Dec 7th

Call Participants: Martin, Lisa, Karla, Carina
Date: 11.02.09
Summary of Discussion:Discussed research with Roofscapes and Hydrotech. Evo has talked with several approved contractors in LA. We also discussed our concerns on the EPRO membrane and the importance of LDI. Carina stated that the engineer has changed the load and it is now limited to 12" of soil. We need more clarification on #/ sq ft. (For now we will assume 120#/sq/ft). There are lots of options in terms of light weight media and foam insulation but need to weigh costs and design.

Budget:it will be very difficult to manage both the landscape and roof for proposed 200,000 dollars.

Action items:1.carina will get a hold of hagy2. carina will schedule a meeting with hagy and mark3. evo will come up with three scenarios for pricing +/- 200K, +/- 250K, +/-300K and higher?

Meeting Minutes 10.29.09

Call participants: Charlie Miller, Nate Johnson, Lisa benjamin, Karla Dakin, Martin Perez, John
Call time: 9 am

Summary of Discussion:

Membrane:
EPRO liner: we discussed the manufacturer, they have a no limit 10 year warranty. This was discussed to be minimum in comparison to other LAR approved companies such as hydrotech. The LA approval was a limitation in selecting membrane/water proofing contractors. we discussed that the eco shield is not a root barrier it is a root repellent and that it is not embedded in the membrane. If there is a separate root barrier it should be thermoplastic as recommended by Charlie Miller. Martin is not necessarily Opposed to changing the roof membrane installer or manufacturer, yet will be difficult to change due to time and budget. So where do we go from here? Roofscapes will be willing to work with pro, Hydrotech is not. Martin stated that the roof membrane and drainage spec provided by pro was between $ 8-10 sq/ ft. Other membranes were anticipated to be 25-20% higher.

Plant Material:
we discussed possibilities of plant material types: grasses, sedums, carexs, succulents etc.

Irrigation:
We also discussed irrigation: it is not counted as a LEED pt so therefore had no LEEd limitations. At present we have a 2" main line serving a the supply line and will plumb into each section of roof accordingly. This 2" main should be sufficient and each bed area will be sleeved.

Drainage:
all drains must be protected with a custom or off the shelf chamber with a lid for regular inspections. you will need subsurface as well as overflow for each drain. As for location they should be easy to get to.

Slope: we discussed slope and stabilization issues. To ensure good stability is to keep substrate material as thin as possible. There are different methods of planting and stabilizing planting with netting, matts, etc. the steep slopes are 1:1 or 8:12 and will require a cellular confinement web, and other soil stabilization methods.

Schedule:
we are now a month ahead of schedule the roof is scheduled to be poured 16-20th of novemeber, 2 days after the pour is complete they will begin on planter walls and they will be completed in 2 weeks putting the waterproof membrane application the first part of december. What martina and john need are locations and number of penetrations for power and irrigation.


EPRO owner/rep: Dave Polk 316.262.2513 dpolk@eproserve.com

Action Items:
1. Roofscapes will pull together a rough proposal by monday and discuss with EVo and martin on Tuesday
2. Evo will continue research with Roofscapes and Hydrotech, Conservation Technology on options for design and installation

Meeting minutes 10-22-09

Los Angeles Museum of the Holocaust
Landscape Design Meeting
Thursday, October 22, 11:00am
Present: Carina Bien-Willner, Aaron Leppanen, Lisa Lee Benjamin, Karla Dakin
Minutes

The conversation started around technical aspects of the building design with regards to the green roof area. Aaron said there is a mininum 6” depth for growing media. There needs to be 6”-24” of media to cover beams. They have the drainage plans in place. They are using EPRO waterproofing. Carina has sent us the specifications. There is a question of whether the membrane system includes a root barrier, especially up the sides of stem walls.

We talked about retaining the growing media on steep slopes and the potential need for additional material (i.e. Hydrotech plastic web product). This decision should be flushed out before the roof is poured and the waterproofing membrane installed.

Lisa recommends installing the International Leak Detection Service and will pass on the contacts to Carina so she can contact them directly.

There was conversation of about the budget as the Landscape team felt that $200,000 is too low. Aaron spoke about getting materials donated and soliciting additional donations from Countries will to “sponsor trees.”

Museum programming: archival and temporary exhibits. Educational component huge and a strong affiliation with the LA Public School District.

Scheduling:

Design: Weekly meetings, to collaborate on design with Carina and Aaron, will take place on Thursday at 10:00am pacific time until late December. We will include Hagy and Mark to seek approval on design milestones.

Construction: (Carina will send updated schedule)
Roof pour 12/30/09
Waterproofing 1/15/10 (43 day float)
Landscape install 4/19-5/19/10*
Flatwork complete 4/19-5/19/10

*Landscape installation will have to be staggered to accommodate all exterior building construction to avoid destruction of landscape.

Conceptual Framework:

Avoid prickly or strong architectural forms. They like voluptuous, voluminous grasses or plants with a similar feel. The palette should be relatively subtle and simple. BIG FLUFFY DOG.
Building materials: concrete and glass. The concrete is Colton concrete which has a whiteness to it.

The color accents in the palette of the planting design should be minimal so there are punches of color at different locations. There could be variations of blue and green. Don’t bring a lot of attention to it. It is important how it integrates into the adjacent park. They like the idea of subtle movement in the plant material. One grass with two unique features that is evocative. Greens that contrast with grass of the park, a variation of grass. Sea Green and/or gray greens. No chartreuse.

The glass on the building is 55% translucent, white film with a green tint. Whitish, grayish, green aluminum (clear, anodized) framing around the glass. Stainless steel railings. The monument is polished black granite. No water features as part of the plan.

Existing trees are California Sycamores which cast beautiful shadows on south walls- there are 3 large ones which are staying. There is also a concrete amphitheater adjacent to the building.

Pedestrian access: 3 main entries. The view sheds of the se approaches are important to the experience of the museum:
Entry= long ramp underground. Plants flush with guard rails. An opening cut out of the earth. The entry symbolizes the world as it was (pre WWII). The audience experiences the content together. The story gets darker and the group experience gets separated. Dark no light, descends into the earth, low ceiling. As the future progresses with the story of Israel, light comes back into play. Memory and story are being told underground and under the park. The park or landscape is oblivious but also could be one of reflection. Landscape is like the time before Adam and Eve.

Another area of interest is north of the monument. The mechanicals need to be screened. 2’ soil depth here. Needs to be softened.

12” is the average soil depth.