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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 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“

Subject Views Written By Posted
Mastaba of Shepsekaf 1950 Thanos5150 25-Oct-17 04:25
Quite the Mastaba...looks like walls can talk ;) 377 Racho 25-Oct-17 06:11
Re: Quite the Mastaba...looks like walls can talk ;) 322 Thanos5150 26-Oct-17 02:26
Re: Quite the Mastaba...looks like walls can talk ;) 336 Barbelo 26-Oct-17 03:57
Gables v Arch 279 Barbelo 26-Oct-17 03:47
Re: Gables v Arch 285 Thanos5150 26-Oct-17 04:47
Re: Gables v Arch 284 Barbelo 26-Oct-17 05:12
Re: Gables v Arch 257 Thanos5150 26-Oct-17 05:39
Re: Gables v Arch 330 Barbelo 26-Oct-17 06:49
An Interesting Curve 307 Jon Ellison 26-Oct-17 23:20
Re: Gables v Arch 250 Thanos5150 27-Oct-17 00:34
Re: Gables v Arch 254 Barbelo 27-Oct-17 01:19
Re: Gables v Arch 261 Jon Ellison 27-Oct-17 01:36
Re: Gables v Arch 249 Jon Ellison 27-Oct-17 01:49
Re: Gables v Arch 253 Barbelo 27-Oct-17 02:05
Re: Gables v Arch 250 Jon Ellison 27-Oct-17 02:17
Re: Gables v Arch 256 Barbelo 27-Oct-17 02:27
Re: Gables v Arch 248 Jon Ellison 27-Oct-17 03:40
Re: Gables v Arch 266 Barbelo 27-Oct-17 05:22
Re: Gables v Arch 262 Jon Ellison 27-Oct-17 06:45
Gables v Arch vs Truss 295 Dr. Troglodyte 27-Oct-17 19:33
Re: Gables v Arch vs Truss 277 Jon Ellison 27-Oct-17 20:50
Re: Gables v Arch vs Truss 238 Jon Ellison 27-Oct-17 21:20
Re: Gables v Arch vs Truss 239 Jon Ellison 27-Oct-17 21:53
Re: Gables v Arch vs Truss 417 Dr. Troglodyte 27-Oct-17 22:47
Re: Gables v Arch vs Truss 270 Jon Ellison 28-Oct-17 07:34
Re: Gables v Arch vs Truss 436 Jon Ellison 28-Oct-17 07:53
Re: Gables v Arch vs Truss 275 Dr. Troglodyte 28-Oct-17 16:08
Re: Gables v Arch vs Truss 301 Jon Ellison 28-Oct-17 18:13
Re: Gables v Arch vs Truss 248 Dr. Troglodyte 28-Oct-17 16:07
Re: Gables v Arch 272 Thanos5150 27-Oct-17 21:40
Re: Gables v Arch 287 Origyptian 27-Oct-17 22:40
Re: Gables v Arch 327 Barbelo 28-Oct-17 00:01
Re: Gables v Arch 347 Origyptian 28-Oct-17 10:03
Re: Gables v Arch 285 Barbelo 28-Oct-17 10:56
Re: Gables v Arch 416 Origyptian 28-Oct-17 13:30
Re: Gables v Arch 272 Barbelo 28-Oct-17 19:57
Re: Gables v Arch 235 Origyptian 28-Oct-17 22:45
Re: Gables v Arch 252 Barbelo 28-Oct-17 23:05
Re: Gables v Arch 262 R Avry Wilson 28-Oct-17 23:48
Re: Gables v Arch 296 Corpuscles 29-Oct-17 00:51
Re: Gables v Arch 277 Origyptian 29-Oct-17 05:19
Re: Mastaba of Shepsekaf 323 Origyptian 27-Oct-17 02:31
Re: Mastaba of Shepsekaf 285 Thanos5150 27-Oct-17 22:18
Re: Mastaba of Shepsekaf 249 Origyptian 27-Oct-17 22:50
Re: Mastaba of Shepsekaf 290 Thanos5150 27-Oct-17 23:46
Re: Mastaba of Shepsekaf 369 DUNE 27-Oct-17 07:58
Re: Mastaba of Shepsekaf 254 Thanos5150 27-Oct-17 22:04
Re: Mastaba of Shepsekaf 275 DUNE 27-Oct-17 23:08
Re: Mastaba of Shepsekaf 576 Thanos5150 28-Oct-17 02:34
Re: Mastaba of Shepsekaf 410 Corpuscles 28-Oct-17 04:43
Re: Mastaba of Shepsekaf 268 Barbelo 28-Oct-17 20:06
Re: Mastaba of Shepsekaf 461 Thanos5150 29-Oct-17 02:03
Re: Mastaba of Shepsekaf 318 Origyptian 29-Oct-17 05:16
Re: Mastaba of Shepsekaf 409 Thanos5150 29-Oct-17 05:39
Re: Mastaba of Shepsekaf 317 Origyptian 29-Oct-17 14:09
Re: Mastaba of Shepsekaf 326 Thanos5150 29-Oct-17 16:39
Re: Mastaba of Shepsekaf 333 Origyptian 29-Oct-17 16:56
Re: Mastaba of Shepsekaf 296 Thanos5150 28-Oct-17 16:00
Re: Mastaba of Shepsekaf 283 Barbelo 28-Oct-17 20:26

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