Ted,

My thought would be to build a foundation as would need for a road, etc. =
I
suggest 6=94 of =BE=94 crushed rock. You need to pack this rock down =
well. Do you
have one of those tampers that have a 6=94x6=94 square plate and have a =
long
handle. Then put down 4 to 6=94 of concrete with a mix suggested by =
Chris
which I believe is one part cement and 1 part sand. A very rich mix. And =
I
would suggest concrete sand rather than mason=92s sand. You probably =
should
have some rebar in there too. Chris will some ideas too. Well, this is a
start. You probably want to wait at least 6 months before you try a
seismometer on the pad. I=92m sure it will be talking.

Gary

=20

One more thing. If you decide to lay in 6=94 of crushed rock, then do =
this in
3 steps. Lay down 2=94, then tamp down with the tamper, lay down 2=94 =
more,
tamp, and 2=94 more, etc.

Gary

=20

=20

=20

=20

From: psn-l-request@.............. [mailto:psn-l-request@............... =
On
Behalf Of tchannel1@............
Sent: Monday, August 25, 2008 4:33 AM
To: psn
Subject: craw space under house

=20

Hi All,   I am building a new house.   This house has no basement, but =
has a
24"? crawlspace under the house.   I have lots of time, to create a =
space
for my three sensors, under the house.   I could also place them in the
garage on the concrete floor.   My thought was to enter the crawlspace, =
and
dig a small pit large enough to allow for elbow room, then line the pit =
with
concrete blocks to keep dirt away.  Perhaps covering the floor area
similarly.  Concrete may not be the best material.   I could also pour a =
pad
or small footing using cement.

Please any thoughts on preparing this space?

=20

Thanks, Ted














Ted,

My thought would be to build a foundation as would need =
for a
road, etc. I suggest 6” of =BE” crushed rock. You need to =
pack this
rock down well. Do you have one of those tampers that have a =
6”x6”
square plate and have a long handle. Then put down 4 to 6” of =
concrete
with a mix suggested by Chris which I believe is one part cement and 1 =
part
sand. A very rich mix. And I would suggest concrete sand rather than
mason’s sand. You probably should have some rebar in there too. =
Chris
will some ideas too. Well, this is a start. You probably want to wait at =
least
6 months before you try a seismometer on the pad. I’m sure it will =
be
talking.

Gary

 

One more thing. If you decide to lay in 6” of =
crushed
rock, then do this in 3 steps. Lay down 2”, then tamp down with =
the
tamper, lay down 2” more, tamp, and 2” more, =
etc.

Gary

 

 

 

 





From:=

psn-l-request@.............. [mailto:psn-l-request@............... On =
Behalf
Of tchannel1@............

Sent: Monday, August 25, 2008 4:33 AM

To: psn

Subject: craw space under house





 



Hi
All,   I am building a new house.   This house has =
no
basement, but has a 24"? crawlspace under the house.   I =
have
lots of time, to create a space for my three sensors, under the
house.   I could also place them in the garage on the concrete
floor.   My thought was to enter the crawlspace, and dig a =
small pit
large enough to allow for elbow room, then line the pit with concrete =
blocks to
keep dirt away.  Perhaps covering the floor area similarly.
 Concrete may not be the best material.   I could also =
pour a
pad or small footing using cement.





Please
any thoughts on preparing this space?





 





Thanks,
Ted