KingStinger! Posted April 20, 2014 Member ID: 2465 Group: +++ Minecraft Head Admin Followers: 30 Topic Count: 170 Topics Per Day: 0.04 Content Count: 1818 Content Per Day: 0.38 Reputation: 1937 Achievement Points: 14559 Solved Content: 0 Days Won: 2 Joined: 05/06/11 Status: Offline Last Seen: 8 hours ago Birthday: 04/17/1972 Device: Windows Share Posted April 20, 2014 Not sure if any of you have experience with this but thought I would ask because im at a lose of what to do. Need some construction advise. Im currently building a 20x12 deck with a pergola top on it. The pergola top will consist of 2x8 on 16" centers. My questions is I have three 6x6 poles 10 feet apart in the ground spanning the width of the deck and thats also how wide the pergola top is going to be but im trying to find a way to get rid of the center pole by cutting it off below the floor so that when i come out of my back door onto the deck i wont have a pole immediately to my right staring me in the face. But if i get rid of this pole can is span a beam the full 20 feet with no support in the center. I was originally going to have the pole there with two 2x10's screwed together as my beam spanning the three poles. Can i still get away with this without the center pole and if not, then how about building up the bean to three 2x10's screwed together. If thats not recommended either then what can i do in order to get away with not having this center pole.. Any help would be greatly appreciated.. Thanks Link to comment Share on other sites More sharing options... Awards
Blackbart Posted April 20, 2014 Member ID: 51 Group: Fallen Members Followers: 51 Topic Count: 342 Topics Per Day: 0.06 Content Count: 5974 Content Per Day: 1.12 Reputation: 3766 Achievement Points: 45818 Solved Content: 0 Days Won: 1 Joined: 09/01/09 Status: Offline Last Seen: October 27, 2021 Birthday: 06/26/1949 Share Posted April 20, 2014 20' unsupported is to long of a span to use wood...You could go with a lamnibeam but they are expensive... :) KingStinger! 1 Link to comment Share on other sites More sharing options... Awards
dawgy Posted April 20, 2014 Member ID: 179 Group: *** Clan Members Followers: 27 Topic Count: 96 Topics Per Day: 0.02 Content Count: 1054 Content Per Day: 0.20 Reputation: 367 Achievement Points: 6817 Solved Content: 0 Days Won: 1 Joined: 09/02/09 Status: Offline Last Seen: April 17 Birthday: 12/07/1981 Device: iPhone Share Posted April 20, 2014 6 x 12 glue lam.... you might be able to use a 6x12 doug fir number 1... but the glue lam will sag less.. KingStinger! 1 Link to comment Share on other sites More sharing options... Awards
Leadfinger Posted April 20, 2014 Member ID: 4888 Group: ***- Inactive Clan Members Followers: 56 Topic Count: 69 Topics Per Day: 0.02 Content Count: 2020 Content Per Day: 0.49 Reputation: 3795 Achievement Points: 26312 Solved Content: 0 Days Won: 3 Joined: 01/12/13 Status: Offline Last Seen: July 29, 2023 Birthday: 08/29/1962 Device: Windows Share Posted April 20, 2014 Things like this can eat guy up . . . . .you want to build it right and last but you want / need to make a change to your original idea and you need to know if your changes will be structurally correct . . . . . . . I been through this many times as a contractor. Here is what I would do, Find a document that covers your problem . . . . take a look at this http://www.awc.org/publications/DCA/DCA6/DCA6-09.pdf Can you post a drawing of your project? As others have stated 20' is a long span for a beam. we need more info to be as accurate as we can. see attached drawing PARTY at Kingstinger's place on his new deck! KingStinger! and ANGU5 2 Link to comment Share on other sites More sharing options... Awards
Blackbart Posted April 20, 2014 Member ID: 51 Group: Fallen Members Followers: 51 Topic Count: 342 Topics Per Day: 0.06 Content Count: 5974 Content Per Day: 1.12 Reputation: 3766 Achievement Points: 45818 Solved Content: 0 Days Won: 1 Joined: 09/01/09 Status: Offline Last Seen: October 27, 2021 Birthday: 06/26/1949 Share Posted April 20, 2014 Glue Lam and Laminabeam are the same thing...Just what we call them here...I think the price of a 6"x12" x20' number 1 beam would cost more than the glue lam and wouldn't be as strong... :) Link to comment Share on other sites More sharing options... Awards
eidolonFIRE Posted April 20, 2014 Member ID: 2759 Group: **- Inactive Registered Users Followers: 17 Topic Count: 199 Topics Per Day: 0.04 Content Count: 3496 Content Per Day: 0.75 Reputation: 3021 Achievement Points: 26464 Solved Content: 0 Days Won: 3 Joined: 08/22/11 Status: Offline Last Seen: June 16, 2017 Birthday: 07/27/1990 Share Posted April 20, 2014 I'm not a mechanical engineer, but I do know there are a lot of equations for this sort of thing used in bridge building. I would recommend looking into building some sort of arch to support the unsupported stretch. Something similar to this. (dunno if this would work for you though... how much head room is under the deck when you walk out the door? ) Link to comment Share on other sites More sharing options...
_-Draco-_ Posted April 20, 2014 Member ID: 20798 Group: *** Clan Members Followers: 9 Topic Count: 11 Topics Per Day: 0.00 Content Count: 108 Content Per Day: 0.03 Reputation: 102 Achievement Points: 811 Solved Content: 0 Days Won: 0 Joined: 01/14/14 Status: Offline Last Seen: Tuesday at 01:00 AM Device: Windows Share Posted April 20, 2014 One thing you might want to keep in mind is your weather.. Do you have earthquakes (I know you don't, just saying), snow, ice, wind? Something external that could increase the loads on your pergola. Link to comment Share on other sites More sharing options... Awards
_-Draco-_ Posted April 20, 2014 Member ID: 20798 Group: *** Clan Members Followers: 9 Topic Count: 11 Topics Per Day: 0.00 Content Count: 108 Content Per Day: 0.03 Reputation: 102 Achievement Points: 811 Solved Content: 0 Days Won: 0 Joined: 01/14/14 Status: Offline Last Seen: Tuesday at 01:00 AM Device: Windows Share Posted April 20, 2014 (edited) Or there is always this option?...You could wrap it in wood if you don't want the steel look. I just don't know what size you would need. http://www.metalsdepot.com/products/hrsteel2.phtml?page=steel%20beam&LimAcc=%20&aident= Edited April 20, 2014 by _-Draco-_ eidolonFIRE 1 Link to comment Share on other sites More sharing options... Awards
snakepliskin Posted April 20, 2014 Member ID: 175 Group: *** Clan Members Followers: 14 Topic Count: 16 Topics Per Day: 0.00 Content Count: 342 Content Per Day: 0.06 Reputation: 168 Achievement Points: 2309 Solved Content: 0 Days Won: 0 Joined: 09/02/09 Status: Offline Last Seen: April 4 Device: Windows Share Posted April 20, 2014 Microlam.Handly it no prob. Link to comment Share on other sites More sharing options... Awards
Wild Fire Posted April 20, 2014 Member ID: 5468 Group: *** Clan Members Followers: 36 Topic Count: 19 Topics Per Day: 0.00 Content Count: 674 Content Per Day: 0.16 Reputation: 655 Achievement Points: 6446 Solved Content: 0 Days Won: 0 Joined: 02/04/13 Status: Offline Last Seen: Monday at 11:37 PM Birthday: 06/22/1965 Device: Android Share Posted April 20, 2014 How will the laminated beams hold up in the weather? Link to comment Share on other sites More sharing options... Awards
snakepliskin Posted April 20, 2014 Member ID: 175 Group: *** Clan Members Followers: 14 Topic Count: 16 Topics Per Day: 0.00 Content Count: 342 Content Per Day: 0.06 Reputation: 168 Achievement Points: 2309 Solved Content: 0 Days Won: 0 Joined: 09/02/09 Status: Offline Last Seen: April 4 Device: Windows Share Posted April 20, 2014 Great,Built a dock with them 20 yrs ago.Still like new. Link to comment Share on other sites More sharing options... Awards
Logan Posted April 20, 2014 Member ID: 582 Group: ++ COD2 Admin Followers: 20 Topic Count: 33 Topics Per Day: 0.01 Content Count: 361 Content Per Day: 0.07 Reputation: 389 Achievement Points: 3272 Solved Content: 0 Days Won: 0 Joined: 10/17/09 Status: Offline Last Seen: May 1, 2020 Birthday: 11/22/1956 Share Posted April 20, 2014 (edited) Any time laminated wood is exposed to weather, it is a good idea to put caulking along the upward facing joints and also to make sure the wood is stained (preferable) or sealed before placing to keep water/ice from getting between the joint(s) causing rust to nail/screws and wood rot. Is there any way to run a laminated beam from the far out side (middle) to a hanger or support on the house side with-out being intrusive? Edited April 20, 2014 by Logan Link to comment Share on other sites More sharing options... Awards
KingStinger! Posted April 20, 2014 Member ID: 2465 Group: +++ Minecraft Head Admin Followers: 30 Topic Count: 170 Topics Per Day: 0.04 Content Count: 1818 Content Per Day: 0.38 Reputation: 1937 Achievement Points: 14559 Solved Content: 0 Days Won: 2 Joined: 05/06/11 Status: Offline Last Seen: 8 hours ago Birthday: 04/17/1972 Device: Windows Author Share Posted April 20, 2014 Here are pics of the deck im building to give you a better understanding of why that post needs to go and sort of a visual of what im talking about!. I do really appreciate all your thoughts and ideas thus far.. eidolonFIRE 1 Link to comment Share on other sites More sharing options... Awards
KingStinger! Posted April 20, 2014 Member ID: 2465 Group: +++ Minecraft Head Admin Followers: 30 Topic Count: 170 Topics Per Day: 0.04 Content Count: 1818 Content Per Day: 0.38 Reputation: 1937 Achievement Points: 14559 Solved Content: 0 Days Won: 2 Joined: 05/06/11 Status: Offline Last Seen: 8 hours ago Birthday: 04/17/1972 Device: Windows Author Share Posted April 20, 2014 (edited) Why browsing around the internet i cam across this video on youtube and at the 15 second mark you can clearly see that there is at least a 21 foot span between posts since its a 14x42 pergola and he has a double set of rafters for the roof. Although it is cedar and i am using spruce i do not plan on doing a double layer.. Edited April 20, 2014 by KingStinger! Link to comment Share on other sites More sharing options... Awards
dawgy Posted April 21, 2014 Member ID: 179 Group: *** Clan Members Followers: 27 Topic Count: 96 Topics Per Day: 0.02 Content Count: 1054 Content Per Day: 0.20 Reputation: 367 Achievement Points: 6817 Solved Content: 0 Days Won: 1 Joined: 09/02/09 Status: Offline Last Seen: April 17 Birthday: 12/07/1981 Device: iPhone Share Posted April 21, 2014 to keep your beam holding up from the weather i would wrap the gluelam in primed pine white wood... sides and bottom and wrap posts to match! Link to comment Share on other sites More sharing options... Awards
Leadfinger Posted April 26, 2014 Member ID: 4888 Group: ***- Inactive Clan Members Followers: 56 Topic Count: 69 Topics Per Day: 0.02 Content Count: 2020 Content Per Day: 0.49 Reputation: 3795 Achievement Points: 26312 Solved Content: 0 Days Won: 3 Joined: 01/12/13 Status: Offline Last Seen: July 29, 2023 Birthday: 08/29/1962 Device: Windows Share Posted April 26, 2014 See now . . . ..doesn't is make you feel better just talking about it . . . . . .lmao Glad you found a possible solution to your problem. Since you got so many idiots to reply to this post pics will be needed of the finished product. baldie 1 Link to comment Share on other sites More sharing options... Awards
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