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Reply #68: RE: Leslie Robertson [View All]

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Make7 Donating Member (1000+ posts) Send PM | Profile | Ignore Wed Feb-08-06 04:11 AM
Response to Reply #65
68. RE: Leslie Robertson
 
"Another structural innovation was the outrigger space frame, which structurally linked the outside wall to the services core. This system performed several functions. First, gravity-induced vertical deformations between the columns of the services core and the columns of the outside wall were made equal at the top of the building; at other levels, the differential deformations were ameliorated. Second, wind-induced overturning moments were resisted in part by the columns of the services core, thus providing additional lateral stiffness. Finally, the weight of, and the wind-induced overturning moment from the rooftop antenna (440 feet tall) was distributed to all columns in the building . . . adding additional redundancy and toughness to the design."

Leslie E. Robertson. "Reflections on the World Trade Center". The Bridge Volume 32, Number 1

http://www.nae.edu/nae/bridgecom.nsf/weblinks/CGOZ-58NLCB

Were there concrete columns in the core?

- Make7
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  -Wonder Why It’s So Important That Towers Did NOT Have Concrete Cores? Christophera  Feb-03-06 08:16 PM   #0 
  - I sure would like to see that 1990 video.  gbwarming   Feb-04-06 01:05 AM   #1 
  - It Was AIred On PBS Nationally-Somebody Taped It-We Need To Ask  Christophera   Feb-04-06 11:06 AM   #18 
  - I don't know if this was made in 1990, but here's link to a PBS video:  satya   Feb-05-06 12:36 AM   #44 
     - I Just Noticed Your Post. There's So Much Baseless Denial Trash On This T  Christophera   Feb-06-06 12:18 AM   #55 
  - I wonder how  LARED   Feb-04-06 06:27 AM   #2 
  - Oh my god, you are being rational  jeannicot   Feb-04-06 07:40 AM   #3 
  - Sorry, I'll stop immediately (n/t)  LARED   Feb-04-06 08:25 AM   #4 
  - Tell that to CNN who on 9/12/01 said WTC had a concrete core.  seatnineb   Feb-04-06 08:49 AM   #8 
     - Yes, it is a dilemma. CNN is always 100% correct  LARED   Feb-04-06 09:14 AM   #9 
        - This journalist interviewed WTC master Leslie Robertson himself.....  seatnineb   Feb-04-06 09:22 AM   #10 
        - A few comments  LARED   Feb-04-06 09:31 AM   #11 
        - I could apply that theory to those who believe in a "steel core".  seatnineb   Feb-04-06 10:18 AM   #13 
           - You might have a point except  LARED   Feb-04-06 11:11 AM   #19 
              - New WTC7 has a concrete core but you would not know it from the outside  seatnineb   Feb-04-06 12:42 PM   #31 
              - WTC 7 has a concrete core?  LARED   Feb-04-06 12:45 PM   #32 
                 - The new WTC7 has a re-inforced concrete core.  seatnineb   Feb-04-06 12:58 PM   #33 
                    - You mean this  LARED   Feb-04-06 01:18 PM   #34 
                       - Silverstein :" the building will have a concrete core rather than a ..."  seatnineb   Feb-04-06 01:44 PM   #35 
                          - Yes, it does appear that the new WTC 7 has a concrete core  LARED   Feb-04-06 01:57 PM   #36 
                             - And that "Source" was written after 9/11!  seatnineb   Feb-04-06 04:16 PM   #38 
                                - Excellent Point: Post 9-11 Structural Statement Must Qualify  Christophera   Feb-04-06 04:44 PM   #40 
              - There Is That Ugly Selectivity Again - Demo Only Pic's That Show Core  Christophera   Feb-05-06 02:33 PM   #50 
        - WONDER? Denial Continues after L. Robertson "a reinforced concrete core"  Christophera   Feb-07-06 07:28 PM   #65 
           - RE: Leslie Robertson  Make7   Feb-08-06 04:11 AM   #68 
              - Robertson Talks About The Interior Box Columns 30 Years After  Christophera   Feb-08-06 01:26 PM   #69 
                 - He said nothing about your "interior box columns".  Make7   Feb-08-06 11:25 PM   #71 
                    - Interior Box Columns Ring Core Area. ASSOC. W/Service core  Christophera   Feb-09-06 12:15 AM   #72 
                       - If an error in evaluation has be made, I believe it has been made by you.  Make7   Feb-09-06 12:46 AM   #73 
                          - Robertson Identifies The Concrete Core Here. You've Seen This Before  Christophera   Feb-09-06 01:25 AM   #74 
                             - My objection to your interpretation of that article is still the same.  Make7   Feb-09-06 01:58 AM   #75 
                                - Context Of Article: Concrete Core INFO Came From Leslie Robertson  Christophera   Feb-09-06 12:05 PM   #78 
                                   - Your argument is based on adherence to journalistic ethics?  Make7   Feb-09-06 02:35 PM   #79 
                                      - At Least My Argument Has A Basis With Evidence Corroborating It.  Christophera   Feb-09-06 03:58 PM   #80 
                                         - You are correct when you say that Robertson used the word "of".  Make7   Feb-10-06 02:57 AM   #82 
                                            - How Can Columns Inside The Core Be Linked To Outside Walls?  Christophera   Feb-10-06 10:54 AM   #86 
                                               - The Outrigger Space Frame  Make7   Feb-11-06 04:14 AM   #91 
                                               - Hat Truss Could Have Existed, But Does Not Prove Steel Core Columns  Christophera   Feb-11-06 05:56 PM   #100 
                                               - I was simply answering your question.  Make7   Feb-11-06 09:50 PM   #101 
                                               - Trust Statements Early Over Late In The Deception Parade-  Christophera   Feb-12-06 01:45 AM   #102 
                                               - He sold out?  LARED   Feb-12-06 07:12 AM   #104 
                                               - Paid Off With Award. No Mention Of Core, Critical Structural Element  Christophera   Feb-12-06 10:19 AM   #106 
                                               - You may chose to believe that, but it is hardly  LARED   Feb-12-06 11:26 AM   #107 
                                               - You Must Not Be Looking-Early Statements Okay, Late No, Not W/Robertson  Christophera   Feb-13-06 01:06 AM   #114 
                                               - How about some sources from the '60's and '70's?  Make7   Feb-12-06 05:34 PM   #110 
                                               - Old CONST. Photos Can Be Used To Make A Fake Look More Real, Not Related  Christophera   Feb-13-06 12:15 AM   #113 
                                               - I don't recall even posting photos in my last reply.  Make7   Feb-13-06 10:58 AM   #118 
                                               - Picture Did Not Show Steel Core Columns. We Cannot Confirm Text As Early  Christophera   Feb-13-06 02:38 PM   #120 
                                               - Confirming Information  Make7   Feb-14-06 06:28 AM   #127 
                                               - "viscoelastic dampers" Perhaps Not In Use In The Late 1970's  Christophera   Feb-14-06 12:07 PM   #131 
                                               - Did you mean the late 1960's?  Make7   Feb-15-06 09:23 AM   #136 
                                               - Viscoelastics Probably Not In Towers. Oxford Dictionary Sources  Christophera   Feb-15-06 10:46 AM   #138 
                                               - Unidentified Flying Sources  Make7   Feb-16-06 09:39 AM   #149 
                                               - Since Dumbing Down, Respect For Common Knowledge Getting Scarce  Christophera   Feb-16-06 07:22 PM   #161 
                                               - What the hell are you even talking about?  Make7   Feb-18-06 01:01 PM   #169 
                                               - ah once again  sabbat hunter   Feb-12-06 08:32 PM   #111 
                                               - No Need For DOC. Demo Photos Have Proof, Learn To Use AVAIL. Evidence  Christophera   Feb-13-06 10:38 AM   #117 
                                               - no photos during construction  sabbat hunter   Feb-16-06 10:20 AM   #151 
                                               - So Wrong! There Were Photos But The Core Was Inside Of The Steel Framework  Christophera   Feb-16-06 12:20 PM   #155 
                                               - thats what you think  sabbat hunter   Feb-16-06 12:27 PM   #156 
                                               - Repetitive Errors: I Post Proof Of The Concrete Core, Corroborated Dynamic  Christophera   Feb-14-06 11:56 PM   #134 
                                               - WONDER, WONDER How Sabbat Can Pretend He Seeks Truth-EVID. & Concrete  Christophera   Feb-15-06 04:06 PM   #139 
                                               - again with the  sabbat hunter   Feb-16-06 10:31 AM   #154 
        - Selective Acceptance Of Evidence-Trust Construction Photos, Not Demo Pic's  Christophera   Feb-05-06 01:40 PM   #49 
        - The irony of you asking if I know what selectivity means  LARED   Feb-05-06 02:45 PM   #51 
           - Why, You Never Produce Real Evidence For Me To Select From.  Christophera   Feb-05-06 10:39 PM   #54 
              - Again with the free fall nonsense  LARED   Feb-06-06 10:23 AM   #57 
                 - The Major Event Becomes "Nonsense"-Your Images Have No Corroboration  Christophera   Feb-06-06 10:27 PM   #63 
        - OK then, how 'bout FOX News?  dchill   Feb-13-06 10:10 PM   #121 
           - concrete in WTC  sabbat hunter   Feb-16-06 10:23 AM   #152 
           - Umm...kinda.  Make7   Feb-16-06 01:15 PM   #158 
  - Looks like those guys in Oxford saw the same 1990 video!  seatnineb   Feb-04-06 08:47 AM   #7 
  - LOL  Jose Diablo   Feb-04-06 10:37 AM   #15 
  - ERRORS: Many Images Exist. Many Know Of Concrete Core-You Confusor  Christophera   Feb-04-06 11:12 AM   #20 
  - Your words  LARED   Feb-04-06 11:21 AM   #22 
  - Feign Confusion Intentionally, Maybe Reader Will Be Confused  Christophera   Feb-04-06 11:29 AM   #24 
     - Deleted message  Name removed   Feb-04-06 11:53 AM   #26 
        - Try Using Evidence And Logic Instead Of Deceptive Manipulation  Christophera   Feb-04-06 12:02 PM   #28 
  - Many Images Exist???  LARED   Feb-04-06 12:25 PM   #29 
     - Here Are 2 More-But You Don't Use Information, So You Won't See The Core  Christophera   Feb-04-06 03:48 PM   #37 
        - So you have no images showing a concrete core?  LARED   Feb-04-06 04:36 PM   #39 
           - Like I Said. You Do Not Use Information That Helps Explain Free Fall-Photo  Christophera   Feb-04-06 04:48 PM   #41 
              - Stop trying to blame me for your inability to provide an image  LARED   Feb-04-06 06:26 PM   #42 
                 - Here Is An Image That Can Only Be A Concrete Core-Oh, You Don't Use Eviden  Christophera   Feb-04-06 10:51 PM   #43 
                    - Good Lord, it's a simple request.  LARED   Feb-05-06 04:52 AM   #45 
                       - You Prove You Will Not Use Evidence By Not Accepting Good Evidence.  Christophera   Feb-05-06 12:27 PM   #48 
                          - That does not qualify as evidence for a concrete core  LARED   Feb-05-06 09:19 PM   #52 
                             - It Is The Core, And You Haven't Explained Why The Core Columns R Not Seen  Christophera   Feb-05-06 10:35 PM   #53 
                             - Clearly You Pretend To Be Interested In The Truth - Images Corroborated  Christophera   Feb-07-06 09:28 PM   #66 
  - EUREKA! The Most Convoluted Distortion Intended To Confuse. Check It Out  Christophera   Feb-07-06 11:51 PM   #67 
  - You've tried, others have tried and I've tried.  ryan_cats   Feb-10-06 09:36 AM   #83 
     - Proper Investigation Requires Structural Knowledge-Meaning You Sabotage  Christophera   Feb-10-06 06:27 PM   #89 
     - Leslie Robertson thinks bombs in the WTC is a "crazy thought!"  seatnineb   Feb-11-06 01:54 PM   #99 
  - Christophera can you answer this?  HamdenRice   Feb-04-06 08:32 AM   #5 
  - This carpenter who worked in the WTC believed it had a concrete core.  seatnineb   Feb-04-06 08:41 AM   #6 
  - So what's the point? nt  HamdenRice   Feb-04-06 09:55 AM   #12 
     - Why is it that before and on 9/11 many believed WTC had concrete cores  seatnineb   Feb-04-06 10:21 AM   #14 
        - Can't you concrete core people answer a question with a declaration???????  HamdenRice   Feb-04-06 10:54 AM   #16 
        - You already know the fuckin' answer.  seatnineb   Feb-04-06 12:27 PM   #30 
           - The official story is bull because ...  HamdenRice   Feb-06-06 08:34 AM   #56 
           - There is more chance of there being a concrete core than Pakistan......  seatnineb   Feb-06-06 10:30 AM   #58 
           - Now I know you are either ...  HamdenRice   Feb-06-06 10:50 AM   #60 
              - I am on your side.  seatnineb   Feb-06-06 11:30 AM   #61 
           - Unreasonable Denial Frustrating, Cussing Normal, Concrete Core Existed  Christophera   Feb-06-06 12:12 PM   #62 
           - official story has it the towers had 110 floors - therefore...  rman   Feb-09-06 04:55 AM   #77 
              - ...the towers had 110 floors!  seatnineb   Feb-10-06 02:47 PM   #88 
                 - every pre 9-11 source i've seen says steel core  rman   Feb-11-06 04:43 AM   #93 
                    - Do they explicitly say a steel "only " core....or do they just imply it?  seatnineb   Feb-11-06 07:11 AM   #98 
                       - drywall etc  rman   Feb-12-06 05:01 AM   #103 
                       - Carpenter who installed drywall in WTC says WTC had concrete core!  seatnineb   Feb-12-06 09:44 AM   #105 
                       - Your source is a post on a forum?  rman   Feb-12-06 12:08 PM   #108 
                          - His name is :Gregory A. Butler.........a local 608 carpenter.  seatnineb   Feb-12-06 01:32 PM   #109 
                             - Every media report on the towers  rman   Feb-13-06 03:13 AM   #115 
                                - The only cover up is post - 9/11.  seatnineb   Feb-13-06 12:12 PM   #119 
                                - nor does it prove it had a concrete core  rman   Feb-14-06 04:28 AM   #124 
                                   - Sure......but something in that building had to support the dead load.....  seatnineb   Feb-14-06 10:55 AM   #129 
                                      - that's post 9-11  rman   Feb-14-06 11:43 AM   #130 
                                      - Except that Architectural Record's description of the shape of the core:  seatnineb   Feb-14-06 05:29 PM   #133 
                                      - does the 1976 movie prove there's a concrete core?  rman   Feb-15-06 02:36 AM   #135 
                                      - This Image Proves There Was A Concrete Core  Christophera   Feb-16-06 01:12 AM   #143 
                                      - No the movie does not.......but this 1977 book effectively does!  seatnineb   Feb-16-06 05:50 AM   #144 
                                      - One New York Plaza has a concrete core  gbwarming   Feb-16-06 08:37 AM   #145 
                                      - O' Hagan refers to both the WTC and 1 New York Plaza.  seatnineb   Feb-16-06 08:55 AM   #146 
                                      - "a hypothetical model that portrays their general characteristics"  gbwarming   Feb-16-06 09:28 AM   #147 
                                      - WTC and 1 New York Plaza conformed to that "hypothetical" model!  seatnineb   Feb-16-06 10:06 AM   #150 
                                      - O'Hagen Defined A General Structural Configuration W/Concrete Core  Christophera   Feb-17-06 03:24 PM   #168 
                                - We Need To See Some Evidence-Talk Of Talk Might Have No Substance  Christophera   Feb-13-06 11:22 PM   #122 
                                   - how about you show some pre 9-11 evidence proving  rman   Feb-14-06 04:30 AM   #125 
                                      - searnineb Came Up With Best. Extra EVI., Photos Show Concrete Conclusively  Christophera   Feb-14-06 10:15 AM   #128 
                       - 1/2 True (+-).Perimeter Steel Took 50%. Interior Box COL's 30%, CONC. Core  Christophera   Feb-12-06 11:09 PM   #112 
                       - the special on A&E  sabbat hunter   Feb-16-06 10:28 AM   #153 
                          - How About At Least A Description Of What They Showed-I Show Concrete  Christophera   Feb-24-06 02:02 PM   #170 
        - 1st time i ever heard of concrete core was from Christophera  rman   Feb-09-06 04:53 AM   #76 
           - Description Of Concrete Core By P.E. Structrual ENG. In 12 States  Christophera   Feb-09-06 09:05 PM   #81 
           - Sure.....this MIT proffessor believed there was a concrete core.  seatnineb   Feb-10-06 02:44 PM   #87 
              - "fireproofed in concrete" does not make for a concrete core  rman   Feb-11-06 04:41 AM   #92 
                 - What you say is true....but you applying it in the wrong context.  seatnineb   Feb-11-06 05:51 AM   #94 
                    - "the 24m ´ 42m interior core consisted of 48 steel columns fireproofed in  rman   Feb-11-06 06:47 AM   #95 
                       - Ghoniem: "steel columns that constituted the core"  Make7   Feb-11-06 07:02 AM   #96 
                       - Gee.....were all 48 columns on or around the perimeter of the core?  seatnineb   Feb-11-06 07:02 AM   #97 
  - Deleted message  Name removed   Feb-04-06 11:01 AM   #17 
     - Deleted message  Name removed   Feb-04-06 11:19 AM   #21 
        - You Have No Evidence-Here I Answer The Way You Want. Read Original Post  Christophera   Feb-04-06 11:26 AM   #23 
           - Free fall was possible ...  HamdenRice   Feb-04-06 11:38 AM   #25 
              - Deleted message  Name removed   Feb-04-06 11:57 AM   #27 
              - Planes Cannot Bring Towers Down - Collapse Cannot Make Sand And Gravel  Christophera   Feb-08-06 04:53 PM   #70 
  - "Have you ever seen a few argue so hard" - Yes, you  rman   Feb-05-06 09:57 AM   #46 
     - Against Concrete, No. I Argue For It When Evidence Says It Was Concrete  Christophera   Feb-05-06 11:51 AM   #47 
        - where did you get that sketch from  sabbat hunter   Feb-06-06 10:35 AM   #59 
           - I Created The Sketch  Christophera   Feb-06-06 10:48 PM   #64 
           - That is a completely and utterly ridiculous theory.  ryan_cats   Feb-10-06 09:39 AM   #84 
              - I Notice You Have No Alternative EXPL. For Free Fall & No Other Evidence  Christophera   Feb-10-06 11:17 PM   #90 
                 - thermite cut up the steel beams,  rman   Feb-13-06 03:17 AM   #116 
                    - Absolutely, But NOT Above The First Floor-No Molten Steel Found In streets  Christophera   Feb-14-06 01:28 AM   #123 
                       - The top section disintegrated as it fell straight down  rman   Feb-14-06 04:34 AM   #126 
                       - Intact Top Of WTC 2 Onto #3. Molten Steel Would Throw By Other EXPL. Video  Christophera   Feb-14-06 02:44 PM   #132 
                       - I did see molten metal dripping from above the crash floors  DemInDistress   Feb-16-06 12:39 PM   #157 
           - Good question, now you know why we question and want to see the video.  ryan_cats   Feb-10-06 09:39 AM   #85 
              - Wouldn't someone (more than 1) have talked by now?  Show_Me _The_Truth   Feb-15-06 09:54 AM   #137 
              - Off Topic-The Concrete Core Is Not A Theory-No Steel Core Columns Seen  Christophera   Feb-15-06 09:37 PM   #140 
                 - Christophera, on Frontline or Nova (I know-grain of salt)  mirandapriestly   Feb-15-06 11:12 PM   #141 
                 - Stairwells Had Drywall Separating From Elevator Shaft On At Least One SIde  Christophera   Feb-15-06 11:54 PM   #142 
                 - Allot of Heresay and Supposition There  Show_Me _The_Truth   Feb-16-06 09:29 AM   #148 
                    - Only One Large Error There. I Only Need Raw Evidence For Source. ?? Proof  Christophera   Feb-16-06 02:54 PM   #159 
                       - I don't need to show proof  Show_Me _The_Truth   Feb-16-06 05:07 PM   #160 
                          - You Are The Master Of Tricky Pictures, I Simply Reason W/Evidence  Christophera   Feb-16-06 08:32 PM   #162 
                             - Hello, sorry to intrude.....  jschurchin   Feb-16-06 08:42 PM   #163 
                                - Volumes Are Good Proof. Floors Were ONLY Official Concrete  Christophera   Feb-16-06 09:22 PM   #164 
                                   - Yes they are.......  jschurchin   Feb-16-06 10:05 PM   #165 
                                      - The Basement Was Larger Than Tower Footprints-More Damage Below  Christophera   Feb-17-06 01:41 PM   #166 
              - You Answer Your Question To Me And Ignore My Answer, ---- Whoa!  Christophera   Feb-17-06 02:11 PM   #167 
 

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