7 Ton Waterfall??

[dc]

Hello,

I am in the later stages of our pool build. I am curious to get someone whom might have more experience than I in sizes of rockwork. I initially agreed with our builder to do a 4 ton waterfall and later decided to go up to 7 tons of moss rock. Mt builder wasnt able to reach the sub company yesterday when we spoke to verify 7 tons were delivered I just want to get other opinions if this looks like 7 tons to anyone else?

thanks!
DC

[graciec]

A behind the scene photo and approx. width would help my husband[in the concrete business] estimate better.First glance he said 2 tons. Could you get a copy of the slip from where your contractor purchased the materials?

[dc]

I am having to crop down the photo to fit the paramaters of this site. of from the 1st photo from the original post, if looking at the tile each end of the waterfall tile line to tile line is 10 feet. the bench arches back around an is not straight across. If I measure the back side of the rockwork from side to side(around the arch it is 23ft 9 inches and is 34 inches tall across the back, and tiers down towards the side slightly. I will include a photo of the backside (again cropped) and a photo of myself sitting on the bench if it helps give a size reference (I am 6ft 225lb)

[South_Texas_Sun]

I am having to crop down the photo to fit the paramaters of this site. of from the 1st photo from the original post, if looking at the tile each end of the waterfall tile line to tile line is 10 feet. the bench arches back around an is not straight across. If I measure the back side of the rockwork from side to side(around the arch it is 23ft 9 inches and is 34 inches tall across the back, and tiers down towards the side slightly. I will include a photo of the backside (again cropped) and a photo of myself sitting on the bench if it helps give a size reference (I am 6ft 225lb)

lol.......... looks like "Honey I shrunk the kids", dc. Perspective sure helps sizing.

Why don't you do the old Archimedes trick and put a piece of it in a container of water and see what mass it displaces, then treat the wall like a long block and round off the figures. I'll bet you get pretty close to the actual weight, even if you're off by a foot or two.

Beautiful house and pool.

[graciec]

Puts it more in perspective.Why can't you get a copy of the sales slip? I will have my husband look at it later. Maybe some one else in construction business can estimate too.

[pauster]

DC,

many stones have a weight per volume (specific gravity) of about 2.0 - 3.0 kg/dm^3. There is about 28 dm^3 in a cu ft, and a pound is .454 kg.

So a cu. ft. of granite (at 2.75) is 171 lbs concrete / mortar is about the same (160-180 lbs/cu ft depending on the aggregate)

7 ton is 14,000 lbs - 82 cu ft or 3.05 yards o f stone/concrete.

So a rectangle 23'9" wide by an average of 30" high would be about 60 cu ft / 5.12 tons if it was 1 ft thick on average.

A 7 ton structure would be just under 1.4 ft thick on average.

Hope this helps

Patrick