Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Building & Construction

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 02-12-2012, 09:56 AM   #1
Newbie
 
Join Date: Feb 2012
Posts: 3
Rewards Points: 10
Default

Launching ramp in water


Ineed to build a launching ramp into a dam. I have no experience with this. I have a lot of building experience.

How do i install a foundation in water?
How do i cast concreate in water?
Can i use precast lintols like econoslab for a ramp?

Any advice would be apreciated!

Charles geyser is offline   Reply With Quote
Old 02-12-2012, 02:11 PM   #2
DIY staff
 
Join Date: Sep 2009
Location: Kane county,Illinois
Posts: 21,863
Rewards Points: 2,374
Default

Launching ramp in water


More info needed--a picture of the dam and the pond would help

__________________
New members: Adding your location to your profile helps in many ways.--M--
oh'mike is offline   Reply With Quote
The Following User Says Thank You to oh'mike For This Useful Post:
Charles geyser (02-13-2012)
Old 02-12-2012, 04:19 PM   #3
Member
 
Join Date: Jul 2008
Location: NW of D.C.
Posts: 5,990
Rewards Points: 2,000
Default

Launching ramp in water


"By the middle of the 1st century, the principles of underwater construction in concrete were well known to Roman builders. The City of Caesarea was the earliest known example to have made use of underwater Roman concrete technology on such a large scale.[2]"
Yoyizit is offline   Reply With Quote
The Following User Says Thank You to Yoyizit For This Useful Post:
amakarevic (02-13-2012)
Old 02-12-2012, 06:31 PM   #4
Disabled wood vet
 
titanoman's Avatar
 
Join Date: Nov 2011
Location: California
Posts: 1,646
Rewards Points: 1,000
Default

Launching ramp in water


I see people sandbag off the area and I've seen people build forms on a barge, lower them into the water, then fill them full of concrete, which forces the water out.
And the concrete still sets up.
I live on a huge lake, so I've seen everything from boat ramps and docks to heliports built on (in) the water.
titanoman is offline   Reply With Quote
The Following User Says Thank You to titanoman For This Useful Post:
Charles geyser (02-13-2012)
Old 02-13-2012, 03:07 AM   #5
Newbie
 
Join Date: Feb 2012
Posts: 3
Rewards Points: 10
Default

Launching ramp in water


Quote:
Originally Posted by oh'mike View Post
More info needed--a picture of the dam and the pond would help
Hi, thanks for the reply. Would like to post a picture but still dont know how. My first round on this site. Will send picture as soon as i understand how.
Charles geyser is offline   Reply With Quote
Old 02-13-2012, 03:09 AM   #6
Newbie
 
Join Date: Feb 2012
Posts: 3
Rewards Points: 10
Default

Launching ramp in water


Quote:
Originally Posted by titanoman View Post
I see people sandbag off the area and I've seen people build forms on a barge, lower them into the water, then fill them full of concrete, which forces the water out.
And the concrete still sets up.
I live on a huge lake, so I've seen everything from boat ramps and docks to heliports built on (in) the water.
Thanks. Do they build these forms from steel?
Charles geyser is offline   Reply With Quote
Old 02-13-2012, 06:43 AM   #7
Disabled wood vet
 
titanoman's Avatar
 
Join Date: Nov 2011
Location: California
Posts: 1,646
Rewards Points: 1,000
Default

Launching ramp in water


Quote:
Originally Posted by Charles geyser

Thanks. Do they build these forms from steel?
I've seen wood and metal used for forms.
titanoman is offline   Reply With Quote
Old 02-13-2012, 11:44 AM   #8
Stuck in the 70's
 
Blondesense's Avatar
 
Join Date: Sep 2008
Location: south central Missouri
Posts: 2,162
Rewards Points: 1,018
Default

Launching ramp in water


Quote:
Originally Posted by Charles geyser View Post
Hi, thanks for the reply. Would like to post a picture but still dont know how. My first round on this site. Will send picture as soon as i understand how.
How to attach a photo to a post
Blondesense is offline   Reply With Quote
Old 02-13-2012, 03:12 PM   #9
Member
 
Join Date: Jul 2008
Location: NW of D.C.
Posts: 5,990
Rewards Points: 2,000
Default

Launching ramp in water


I think you want 'hydraulic concrete' or 'hydraulic cement' in large quantities but I can't readily find a supplier on the Net.

You should probably sink rods into the bottom soil to adequately anchor the ramp.
Yoyizit is offline   Reply With Quote
Old 02-15-2012, 11:22 PM   #10
Registered User
 
Join Date: Mar 2009
Posts: 9,968
Rewards Points: 2,000
Default

Launching ramp in water


Regular-mix concrete works fine, strong enough PSI to drive on....... Mix it slightly dry, dump it in, it stays together. Waves are hard on any finish though.

Gary
__________________
If any ads are present in my answer above, I do not condone/support/use the product or services listed, they are there against my permission.
Gary in WA is offline   Reply With Quote
Old 02-18-2012, 01:03 PM   #11
Member
 
Join Date: Apr 2008
Posts: 78
Rewards Points: 75
Default

Launching ramp in water


When we redid our boat ramp they poured it in the shore and then pushed it into the water.
UFoPilot is offline   Reply With Quote
Old 02-18-2012, 01:58 PM   #12
Disabled wood vet
 
titanoman's Avatar
 
Join Date: Nov 2011
Location: California
Posts: 1,646
Rewards Points: 1,000
Default

Launching ramp in water


Quote:
Originally Posted by GBR in WA
Regular-mix concrete works fine, strong enough PSI to drive on....... Mix it slightly dry, dump it in, it stays together. Waves are hard on any finish though.

Gary
Explains why those ramps are so rough on bare feet.
titanoman is offline   Reply With Quote
The Following User Says Thank You to titanoman For This Useful Post:
Charles geyser (02-19-2012)
Old 02-18-2012, 02:58 PM   #13
Member
 
Join Date: Nov 2011
Location: Hartfield VA
Posts: 26,997
Rewards Points: 3,110
Default

Launching ramp in water


We have to do the same thing around here as UFOpilot stated.
They make us pore on the shore and roll them in place.
Last one I did where were lucky and had an escavator on site for some other work so we made up some rebar U bolts to hook the chains to, to lift it to put 3" PVC under it to act as rollers and pull it into place.

joecaption is offline   Reply With Quote
The Following User Says Thank You to joecaption For This Useful Post:
Charles geyser (02-19-2012)
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Cold water is warm - hot water leak under slab? Homerepairguy Plumbing 9 10-13-2010 08:17 PM
Oil fired furnace and hot water heater question steveinpa Plumbing 3 08-10-2010 08:42 AM
water borehole question joeuser General DIY Discussions 2 04-18-2010 10:33 PM
Well Water snuggles2010 Plumbing 3 04-13-2010 01:36 PM
How Do I Properly Shock Chlorinate a Water Softner classicflytyer Plumbing 5 07-14-2009 12:15 AM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.