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