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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
Η άγνοια είναι η μητέρα του μύθου και του μυστηρίου.


“Numero, Pondere et Mensura“


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Subject Views Written By Posted
Mastaba of Shepsekaf 1803 Thanos5150 25-Oct-17 04:25
Quite the Mastaba...looks like walls can talk ;) 352 Racho 25-Oct-17 06:11
Re: Quite the Mastaba...looks like walls can talk ;) 300 Thanos5150 26-Oct-17 02:26
Why adapted/adopted 256 Racho 31-Oct-17 07:44
Re: Why adapted/adopted 393 Jon Ellison 31-Oct-17 09:25
Re: Quite the Mastaba...looks like walls can talk ;) 312 Barbelo 26-Oct-17 03:57
Gables v Arch 253 Barbelo 26-Oct-17 03:47
Re: Gables v Arch 263 Thanos5150 26-Oct-17 04:47
Re: Gables v Arch 257 Barbelo 26-Oct-17 05:12
Re: Gables v Arch 232 Thanos5150 26-Oct-17 05:39
Re: Gables v Arch 302 Barbelo 26-Oct-17 06:49
An Interesting Curve 283 Jon Ellison 26-Oct-17 23:20
Re: Gables v Arch 224 Thanos5150 27-Oct-17 00:34
Re: Gables v Arch 225 Barbelo 27-Oct-17 01:19
Re: Gables v Arch 233 Jon Ellison 27-Oct-17 01:36
Re: Gables v Arch 227 Jon Ellison 27-Oct-17 01:49
Re: Gables v Arch 229 Barbelo 27-Oct-17 02:05
Re: Gables v Arch 229 Jon Ellison 27-Oct-17 02:17
Re: Gables v Arch 234 Barbelo 27-Oct-17 02:27
Re: Gables v Arch 218 Jon Ellison 27-Oct-17 03:40
Re: Gables v Arch 238 Barbelo 27-Oct-17 05:22
Re: Gables v Arch 236 Jon Ellison 27-Oct-17 06:45
Gables v Arch vs Truss 271 Dr. Troglodyte 27-Oct-17 19:33
Re: Gables v Arch vs Truss 255 Jon Ellison 27-Oct-17 20:50
Re: Gables v Arch vs Truss 216 Jon Ellison 27-Oct-17 21:20
Re: Gables v Arch vs Truss 219 Jon Ellison 27-Oct-17 21:53
Re: Gables v Arch vs Truss 385 Dr. Troglodyte 27-Oct-17 22:47
Re: Gables v Arch vs Truss 238 Jon Ellison 28-Oct-17 07:34
Re: Gables v Arch vs Truss 411 Jon Ellison 28-Oct-17 07:53
Re: Gables v Arch vs Truss 248 Dr. Troglodyte 28-Oct-17 16:08
Re: Gables v Arch vs Truss 280 Jon Ellison 28-Oct-17 18:13
Re: Gables v Arch vs Truss 227 Dr. Troglodyte 28-Oct-17 16:07
Re: Gables v Arch 249 Thanos5150 27-Oct-17 21:40
Re: Gables v Arch 267 Origyptian 27-Oct-17 22:40
Re: Gables v Arch 300 Barbelo 28-Oct-17 00:01
Re: Gables v Arch 322 Origyptian 28-Oct-17 10:03
Re: Gables v Arch 264 Barbelo 28-Oct-17 10:56
Re: Gables v Arch 392 Origyptian 28-Oct-17 13:30
Re: Gables v Arch 223 Barbelo 28-Oct-17 19:57
Re: Gables v Arch 209 Origyptian 28-Oct-17 22:45
Re: Gables v Arch 226 Barbelo 28-Oct-17 23:05
Re: Gables v Arch 240 R Avry Wilson 28-Oct-17 23:48
Re: Gables v Arch 272 Corpuscles 29-Oct-17 00:51
Re: Gables v Arch 256 Origyptian 29-Oct-17 05:19
Re: Mastaba of Shepsekaf 297 Origyptian 27-Oct-17 02:31
Re: Mastaba of Shepsekaf 251 Thanos5150 27-Oct-17 22:18
Re: Mastaba of Shepsekaf 224 Origyptian 27-Oct-17 22:50
Re: Mastaba of Shepsekaf 235 Thanos5150 27-Oct-17 23:46
Re: Mastaba of Shepsekaf 347 DUNE 27-Oct-17 07:58
Re: Mastaba of Shepsekaf 232 Thanos5150 27-Oct-17 22:04
Re: Mastaba of Shepsekaf 238 DUNE 27-Oct-17 23:08
Re: Mastaba of Shepsekaf 477 Thanos5150 28-Oct-17 02:34
Re: Mastaba of Shepsekaf 381 Corpuscles 28-Oct-17 04:43
Re: Mastaba of Shepsekaf 240 Barbelo 28-Oct-17 20:06
Re: Mastaba of Shepsekaf 359 Thanos5150 29-Oct-17 02:03
Re: Mastaba of Shepsekaf 290 Origyptian 29-Oct-17 05:16
Re: Mastaba of Shepsekaf 383 Thanos5150 29-Oct-17 05:39
Re: Mastaba of Shepsekaf 294 Origyptian 29-Oct-17 14:09
Re: Mastaba of Shepsekaf 285 Thanos5150 29-Oct-17 16:39
Re: Mastaba of Shepsekaf 307 Origyptian 29-Oct-17 16:56
Re: Mastaba of Shepsekaf 254 Thanos5150 28-Oct-17 16:00
Re: Mastaba of Shepsekaf 256 Barbelo 28-Oct-17 20:26


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