Journal of 10/14/2015

Early morning is cold near zero degree. I’m wearing a vest, cotton gloves, two long sleeves, long underwear pants.
10142015_0004

10142015_0102

Ready to tackle the roof top
10142015_0212

Laying two rows of earthbag on the roof
10142015_0298

10142015_0313

Regular visitor dropped by. The old lady is in 90s.
I said “Good morning!” to her but she probably could not hear my voice. She stayed for mintues then left.
10142015_0331

How to fill the empty space at the center of roof?
I decided to make five Isosceles.
10142015_0365

Alinging five isosceles to mark U-bolt mounting holes.
10142015_0399

One U-bolt, a braket, two nuts join two adjacent triangles.
10142015_0500

Top side of the roof center
10142015_0559

Distance shot
10142015_0561

10/15/2015

10152015_0257

10152015_0245

10152015_0254

Added five more U-bolts to secure the MDF panels.
10152015_0250

These are two biggest holes that I’ll have to patch before starting to coat plaster.
10152015_0248

10152015_0260

Plaster property (written on the bag)
CaO: over 80%
Particle size: 200 Mesh (0.075 mm) 80%

10152015_0260

Calculation of the total earth quantity

I opened up a leftover earth bag, removed the earth carefully using a PLA object which was the housing of a blower conversion kit. Number of cups was 43.
10152015_0262

Measuring the cup weight. It indicates 32.5 g. The annoying problem was that measurements the earth cup kept shifting depend on contact points on the surface of the weight machine.
10152015_0264

I put earth in a small plastic bag to find the weight of unit earth. The reading was 294.4 g. I weighed it three times to get average unit weight for the calclulation.
10152015_0270

Weight of the vinyl bag (Wb)

Wb = (5.5 + 5.5 + 5.6)/3 = 5.5

Weight of earth in the vinyl bag (We)

We = (294.1 + 294.4 + 294.4) = 294.3

Weight of unit earth (Wu)

Wu = We – Wb = 288.8 g

Weight of the earth bag

43 unit x weight/unit = 43 x 288.8 g = 12,418.40 g
It’s around 12.42 kg.

The dome has consumed about 650 to 670 earth bags, around 8,321 kg. My estimate of total earth quantity is between 8.5 ton and 8.7 ton because the sample earth bag was medium size.
10152015_0272

About janpenguin

Email: janpenguin [at] riseup [dot] net Every content on the blog is made by Free and Open Source Software in GNU/Linux.
This entry was posted in DIY, Permaculture and tagged , , , . Bookmark the permalink.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s