IRstuff,
That is true (BTU consumption); this will happen anyway when the water is processed/stored. It would reduce the number of tankless water heaters required.
racookpe1978,
The temperature of the slab would also be a factor; slab on grade, uninsulated.
Thank you both for the feedback.
Internal conditioned space.
Initial temperature may vary 40-50 F
Tank is uninsulated
We anticipate that the water temperature will increase.
The question is how long would it take.
Eventually the water will be heated to 180 degrees for brewing beer.
The change in temperature would reduce the...
The water would be pretreated and temporarily stored in a tank. The water would eventually reach room temperature. I would like to be able to look at various scenarios; adjust the variables.
I would assume a constant room temperature and would want to determine how long it would take the...
Looking for a formula to calculate heat transfer to water.
Specifically: water temperature 45 degrees F, plastic tank with 600 gallons of water, constant room temperature.
Would like to adjust the variables to determine time and temperature of the water.
Considering pretreating the water...
I am reviewing the following
Beam over HSS Column Connection Example 4.1
HOLLOW STRUCTURAL SECTION CONNECTIONS / AISC DESIGN GUIDE 24 (Based upon 2005 AISC Specification for Structural Steel Buildings)
I am comparing it to results from some new software (SCIA HSS design Tools Pack, developed...
EEJaime,
All bars are wire tied.
250.52(A)(3) Concrete-Encased Electrode states
"One or more bare or zinc galvanized or other electrically conductive coated steel reinforcing bars or rods of not less than 13 mm (½ in.) in dia meter installed in one continuous 6.0 m (20 ft) length, or if in...
EEJaime,
There is 3" of cover for the horizontal steel. 2" of cover for the vertical steel.
The vertical steel bars are "L" shaped 12" horizontal. Therefore there is just over 20 lf in the footing.
The copper conductor continued up through the footing to the ground bus at the service panel...
7anoter4,
Would the ground fault current also leave through the vertical rebar to the surrounding soil assuming the cardboard form disintegrates over time?
resqcapt19,
The bottom of the footing is in direct contact with the soil. The form is like a turtle shell, no plastic on bottom.
The vertical form is cardboard that will deteriorate over time.
7anoter4,
The following is taken from an article regarding concrete as conductive:
"The principle of the Ufer ground is simple, it is very effective and inexpensive to install during new construction. The Ufer ground takes advantage of concrete’s properties to good advantage. Concrete absorbs...
jghrist,
Only the top of the bottom form is plastic.
It actually has small holes in the top; when considering migration/wicking of moisture.
The bottom of the form is exposed to earth.
The vertical steel is formed with a cardboard tube form.
7anoter4,
Not sure what your concern is regarding...
Attached sketch.
Bottom of footing is 3'4" below grade.
Partial height of pier is below grade.
The question would be with respect to moisture and conductivity.
Thanks
http://files.engineering.com/getfile.aspx?folder=85cb58b3-9107-4b93-b0c5-b008889b3aed&file=pier_detail.png
7anoter4,
I meet the requirements for the concrete encased electrode.
The debate is centered on whether or not the formwork will limit the amount of moisture that the concrete will absorb and therefore negate its conductivity.
The construction details are described in the 1st post.
