On Sat, 03 Jun 2006 14:09:23 -0400, Wayne.B
wrote:

You only need about 6 cubic feet to make
a 2,000 lb block

Correction: Make that 14 cubic feet for a 2,000 lb block.

Wayne.B wrote:
On Sat, 03 Jun 2006 14:09:23 -0400, Wayne.B
wrote:


You only need about 6 cubic feet to make
a 2,000 lb block


Correction: Make that 14 cubic feet for a 2,000 lb block.


I was gonna say...that wheelbarrow of mine must be some strong!

Wayne.B wrote:
Unless you own a floating work barge with hoist, you will need
professional assistance to transport the block and plant it.

maybe you could get it into a cheap wooden dingy, tow it out to where
you want it, and then use large amounts of 4th of july fireworks to
"dramatically" plant the mooring on the bottom. if enough explosives
were involved i'd pay 5$us to see that lol ...

maybe you could get it into a cheap wooden dingy, tow it out to where
you want it, and then use large amounts of 4th of july fireworks to
"dramatically" plant the mooring on the bottom. if enough explosives
were involved i'd pay 5$us to see that lol ...

The way that old Enoch Winslow did it was to back the truck down to the
water at low tide. and dump it.
then he would bring two wooden skiffs with a couple 6x6 lashing them
together, hanging the weight between them.
The chain was attached to the logs by a thick rope. At high tide he woud tow
the skiffs, chain and mooring bouy to where the mooring was to be set. At
the proper place his helper would take an axe to the rope.

Leanne
s/v Fundy

Courtney Thomas wrote:


My understanding is that concrete loses a lot of it's 'weight' in water,
whereas steel/iron do not and given the recent hurricane rash I'd prefer
all I can reasonably get. Plus I'm not in an area catering to such
services as installing moorings, for example.

The reason for most of the mass of a mooring anchor is to dig it into
the seabed. The mass, after it's buried, isn't too proportional to its
holding power. Thus once buried, a concrete cone would work as well as
an iron mushroom anchor of greater density.

-paul

purple_stars wrote:
a fifteen foot tall statue of elvis, especially if it had his guitar
sticking out on both sides.

on a serious note, i thought that most moorings were poured concrete,
poured right on the spot using whatever kind of form you can
make/find. concrete cures just fine under water once it's been
poured, and i'm sure concrete is easier to deal than a fifteen foot
tall statue of elvis.

Courtney Thomas wrote:
I want to install a fixed mooring this summer and see that for
example mushroom anchors are expensive.

The environment is... Atlantic salt water, in a fairly well protected
cove, with 6' tides, in about 10-15' of water, virtually no traffic
and a spit serving as immediate breakwater.

Alternative suggestions to a mushroom would be appreciated.

Courtney

Depending on the aggregate in the mix, concrete is just about the worst
substance you can use. A stone aggregate will barely hold a 35-footer unless
the weight is dug in about 12 feet down in heavy mud. How are you going to
do this? I saw a newly-laid slab of concrete "hopped across" the bay by a
Nicholoson 32 in a force 6 some years ago. If you use iron or steel
aggregate, then you increase the weight per unit volume slightly, but it's
still too light for storm conditions.

Train wheels are far-and-away the best moorings, next to a couple of large
(and expensive) mushrooms with 30 metres of 1" link chain between 'em.

I'd second the idea about concrete. It has very low density and unless
it is buried very deeply is less likely to provide as much holding power.

An alternative approach might be to use something very heavy as a center
weight such as a car engine block but to then add a few additional
anchors around it.

I helped a friend do this with his mooring a few years back and it seems
to have worked very well. We dropped an engine into the mud, having
first threaded several heavy chain loops threw it and welded them in
place. Each loop attached to a singe very large turnbuckle to which the
mooring chain was attached.

What made it someone different was that we added three small danforth
anchors in a star pattern radiating out from it, each on about 10' of
chain. We dug a trough for each of these and tensioned them so that the
anchors were completely set and then covered them over.

The block provided weight and the anchors provided lateral resistance.
Seems to have worked fine.

Hope this helps.

Robb


Dennis Pogson wrote:
Depending on the aggregate in the mix, concrete is just about the worst
substance you can use. A stone aggregate will barely hold a 35-footer unless
the weight is dug in about 12 feet down in heavy mud. How are you going to
do this? I saw a newly-laid slab of concrete "hopped across" the bay by a
Nicholoson 32 in a force 6 some years ago. If you use iron or steel
aggregate, then you increase the weight per unit volume slightly, but it's
still too light for storm conditions.

Train wheels are far-and-away the best moorings, next to a couple of large
(and expensive) mushrooms with 30 metres of 1" link chain between 'em.