Mysteries :  The Official GrahamHancock.com forums
For serious discussion of the controversies, approaches and enigmas surrounding the origins and development of the human species and of human civilization. (NB: for more ‘out there’ posts we point you in the direction of the ‘Paranormal & Supernatural’ Message Board). 
Welcome! Log InRegister
Jon Ellison Wrote:
-------------------------------------------------------
> Dr. Troglodyte Wrote:
> --------------------------------------------------
> -----
> >
>


[Image Restored]

> >
> >
> > Hello Jon Ellison; regarding the above image
> you
> > wrote:
> >
> > ”Not really as it isn't an arch.
> > It's a triangulated, opposed truss.
> > It functions dynamically in exactly the same
> way
> > as the trusses' in the other pyramids...”

> >
> > These comments are incorrect.
> >
> > The roof structure for this space is an
> > arch
. It is composed of segments of
> opposing
> > voussoirs. It is not a
> > “triangulated, opposed truss”; in that it
> does
> > satisfy the formulaic requirements for a truss:
> > m = 2n – 3,
> > where m is the
> > total number of members and
> > n is the total
> > number of nodes. It does not function
> > “dynamically” as a truss, for the same
> > reason.
> >
> >
> >
>

> >
> >
> >
> > Dr. Troglodyte
>

> How exactly does a Voussoir function as an active
> component within a true arch????
> How does a true arch function as opposed to a
> gabled arch???
> Are they the same?
> Are they different??


The ‘voussoir’ is a wedge shaped element utilized in load [force/thrust] transference. In the image below, lines of “thrust” are dashed:



Source


> What is the difference between a True Arch and a
> False Arch??


The ‘voussoired’ arch is a form of “true” arch; the ‘corbeled’ arch is defined as a “false” arch.


> What would happen if we were to remove the lower
> cross member from a triangulated truss??
> If the lower cross member of a truss were removed
> could it be compensated for in any other way
> therefore mathematically maintaining the
> structural integrity of the truss??
>


You would no longer have a ”truss”. Compensation of the horizontal chord member of a truss, that does not act in tension, negates its designation as a ”truss”.


> I look forward to your answers.
>
> I have corrected and completed your drawing.
>
>



You have “corrected” nothing. You have illustrated the compression of the diagonal members and the tension of the horizontal chord member. You have incorrectly illustrated the “reaction” force from the bearing nodes, as indicated in this modern wood truss image:



Source



Dr. Troglodyte


“Quis custodiet ipsos custodes?“ - Decimus Junius Juvenalis


“Numero, Pondere et Mensura“


Options: ReplyQuote


Subject Views Written By Posted
Mastaba of Shepsekaf 1683 Thanos5150 25-Oct-17 04:25
Quite the Mastaba...looks like walls can talk ;) 330 Racho 25-Oct-17 06:11
Re: Quite the Mastaba...looks like walls can talk ;) 276 Thanos5150 26-Oct-17 02:26
Why adapted/adopted 230 Racho 31-Oct-17 07:44
Re: Why adapted/adopted 367 Jon Ellison 31-Oct-17 09:25
Re: Quite the Mastaba...looks like walls can talk ;) 280 Barbelo 26-Oct-17 03:57
Gables v Arch 216 Barbelo 26-Oct-17 03:47
Re: Gables v Arch 238 Thanos5150 26-Oct-17 04:47
Re: Gables v Arch 233 Barbelo 26-Oct-17 05:12
Re: Gables v Arch 211 Thanos5150 26-Oct-17 05:39
Re: Gables v Arch 269 Barbelo 26-Oct-17 06:49
An Interesting Curve 250 Jon Ellison 26-Oct-17 23:20
Re: Gables v Arch 198 Thanos5150 27-Oct-17 00:34
Re: Gables v Arch 197 Barbelo 27-Oct-17 01:19
Re: Gables v Arch 213 Jon Ellison 27-Oct-17 01:36
Re: Gables v Arch 203 Jon Ellison 27-Oct-17 01:49
Re: Gables v Arch 209 Barbelo 27-Oct-17 02:05
Re: Gables v Arch 207 Jon Ellison 27-Oct-17 02:17
Re: Gables v Arch 213 Barbelo 27-Oct-17 02:27
Re: Gables v Arch 195 Jon Ellison 27-Oct-17 03:40
Re: Gables v Arch 214 Barbelo 27-Oct-17 05:22
Re: Gables v Arch 212 Jon Ellison 27-Oct-17 06:45
Gables v Arch vs Truss 248 Dr. Troglodyte 27-Oct-17 19:33
Re: Gables v Arch vs Truss 221 Jon Ellison 27-Oct-17 20:50
Re: Gables v Arch vs Truss 194 Jon Ellison 27-Oct-17 21:20
Re: Gables v Arch vs Truss 194 Jon Ellison 27-Oct-17 21:53
Re: Gables v Arch vs Truss 350 Dr. Troglodyte 27-Oct-17 22:47
Re: Gables v Arch vs Truss 209 Jon Ellison 28-Oct-17 07:34
Re: Gables v Arch vs Truss 387 Jon Ellison 28-Oct-17 07:53
Re: Gables v Arch vs Truss 227 Dr. Troglodyte 28-Oct-17 16:08
Re: Gables v Arch vs Truss 258 Jon Ellison 28-Oct-17 18:13
Re: Gables v Arch vs Truss 204 Dr. Troglodyte 28-Oct-17 16:07
Re: Gables v Arch 224 Thanos5150 27-Oct-17 21:40
Re: Gables v Arch 244 Origyptian 27-Oct-17 22:40
Re: Gables v Arch 277 Barbelo 28-Oct-17 00:01
Re: Gables v Arch 287 Origyptian 28-Oct-17 10:03
Re: Gables v Arch 237 Barbelo 28-Oct-17 10:56
Re: Gables v Arch 368 Origyptian 28-Oct-17 13:30
Re: Gables v Arch 200 Barbelo 28-Oct-17 19:57
Re: Gables v Arch 187 Origyptian 28-Oct-17 22:45
Re: Gables v Arch 205 Barbelo 28-Oct-17 23:05
Re: Gables v Arch 219 R Avry Wilson 28-Oct-17 23:48
Re: Gables v Arch 251 Corpuscles 29-Oct-17 00:51
Re: Gables v Arch 233 Origyptian 29-Oct-17 05:19
Re: Mastaba of Shepsekaf 270 Origyptian 27-Oct-17 02:31
Re: Mastaba of Shepsekaf 224 Thanos5150 27-Oct-17 22:18
Re: Mastaba of Shepsekaf 202 Origyptian 27-Oct-17 22:50
Re: Mastaba of Shepsekaf 213 Thanos5150 27-Oct-17 23:46
Re: Mastaba of Shepsekaf 318 DUNE 27-Oct-17 07:58
Re: Mastaba of Shepsekaf 211 Thanos5150 27-Oct-17 22:04
Re: Mastaba of Shepsekaf 212 DUNE 27-Oct-17 23:08
Re: Mastaba of Shepsekaf 421 Thanos5150 28-Oct-17 02:34
Re: Mastaba of Shepsekaf 356 Corpuscles 28-Oct-17 04:43
Re: Mastaba of Shepsekaf 215 Barbelo 28-Oct-17 20:06
Re: Mastaba of Shepsekaf 306 Thanos5150 29-Oct-17 02:03
Re: Mastaba of Shepsekaf 259 Origyptian 29-Oct-17 05:16
Re: Mastaba of Shepsekaf 358 Thanos5150 29-Oct-17 05:39
Re: Mastaba of Shepsekaf 272 Origyptian 29-Oct-17 14:09
Re: Mastaba of Shepsekaf 260 Thanos5150 29-Oct-17 16:39
Re: Mastaba of Shepsekaf 279 Origyptian 29-Oct-17 16:56
Re: Mastaba of Shepsekaf 231 Thanos5150 28-Oct-17 16:00
Re: Mastaba of Shepsekaf 222 Barbelo 28-Oct-17 20:26


Sorry, only registered users may post in this forum.