Coil Grounding

To: tesla-at-pupman-dot-com
Subject: Coil Grounding
From: "Troy Peterson" <highvoltage-at-mad.scientist-dot-com> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
Date: Sat, 12 Feb 2000 19:48:35 -0700
Approved: twftesla-at-uswest-dot-net
Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

Hi all, 
 
I am rather new to coiling, having built a small (30cm) coil, and a solid
state coil  (the dial 3055 type) I am now moving on to a larger coil, but I
have a problem... 
 
I am in a small rented Duplex - my coiling work is done in the basement.
How do I ground my coil? any suggestions? I can't run a heavy wire outside
from in here, and I can't pound a ground rod through the cement floor. I am
currently running my small coil on a water pipe, this may not be such a
good idea, but it is a low power coil and it doesnt seem to be a problem. I
have done a few calculations and located (but not purchased) the parts I
need for the coil. My calculations are as follows, if you see any errors,
or have any  suggestions plz send me a message back.
 
  Primary xformer: E=10KV 
                           A=23ma
          
               E
               --- = Z = 434.78k ohms
                I 
 
  Tank Capacitor:
                               1
                       C = -------- = 0.006202 uF
                             2piFZ
 
  Primary Coil:  Inverse conical
 
      (I havn't done these calcs yet, I'm planning to wait till I have the
ACTUAL specs on the secondary)
 
  Secondary:
                   Coil length: 61cm (24 inches)
                   Coil Diameter: 20.3cm (8 inches)
               Wire: 22 gauge
                  ohms/ft: 16.2
                  wire dia: 0.0285 inches
                  turns/inch: 37
                  feet/pound: 514.2
                  req'd length of wire: 1858.88 ft
           turns: 888
   
 
 Anyway, that's what I am planning, any comments, math errors, etc? Also, I
plan to use beer-bottle capacitors because of parts availability where I
live (small town - capacitors: hard to find, beer bottles: very easy ;)
could someone help me to approximatly calculate the number of bottles I
would need (and surface area of foil, etc) to achieve somewhere near the
above noted value?
 
Thank-you to anyone that can help,
 
Troy Peterson [VE7SOK]
highvoltage-at-mad.scientist-dot-com
or 
troypete-at-sunwave-dot-com