Talk:3078: Anchor Bolts - Revision history

MisterAnchorBolt at 01:09, 26 April 2025

2025-04-26T01:09:28Z

FaviFake at 16:42, 23 April 2025

2025-04-23T16:42:52Z

162.158.216.114 at 16:20, 23 April 2025

2025-04-23T16:20:06Z

172.71.178.15: minor grammatical

2025-04-23T15:46:16Z

minor grammatical

172.68.186.51: minor grammatical

2025-04-23T15:34:24Z

minor grammatical

172.68.186.50: Added the possibility of setting liquid around a hitherto-wider hole to enclose the bolt rather than operating from in the mantle to position it

2025-04-23T15:31:42Z

Added the possibility of setting liquid around a hitherto-wider hole to enclose the bolt rather than operating from in the mantle to position it

172.68.186.51: minor grammatical

2025-04-23T15:24:57Z

minor grammatical

172.68.186.51: Correction to the definitions of screws vs. bolts. plus explanation of how the project could be carried-out without half the operation having to be done from the mantle

2025-04-23T15:21:43Z

Correction to the definitions of screws vs. bolts. plus explanation of how the project could be carried-out without half the operation having to be done from the mantle

172.71.178.58: Richter 10.

2025-04-22T10:03:52Z

Richter 10.

172.68.22.41 at 14:32, 21 April 2025

2025-04-21T14:32:23Z

← Older revision		Revision as of 01:09, 26 April 2025
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	The project could be conducted entirely from the surface, without complicated sub-surface operations, by drilling a hole the diameter of the bolt head - not the bolt shank - and filling it with some high-density liquid (mercury? lava? trans-uranic elements?) to prevent pressure from closing the hole immediately, then inserting the bolt head-first, then extracting the remaining liquid (or possibly even solidifying it, perhaps through cooling or polymerisation?), causing the hole to collapse around the bolt thus securing the head to prevent the bolt from rotating (I suspect the pressure of the rock on the shank would probably accomplish this even if the bolt didn't have a head) and finally the nut could be threaded onto the protruding shank-end and torqued-down. If the shear strength of the bolt is the most likely cause of failure, a considerable torque would need to be applied to increase the friction between the surfaces being mated so as to use the bolt's tensile-strength advantage to resist the shear load and oh goodness I've just been nerd-sniped....) [[Special:Contributions/172.68.186.51\|172.68.186.51]] 15:21, 23 April 2025 (UTC)		The project could be conducted entirely from the surface, without complicated sub-surface operations, by drilling a hole the diameter of the bolt head - not the bolt shank - and filling it with some high-density liquid (mercury? lava? trans-uranic elements?) to prevent pressure from closing the hole immediately, then inserting the bolt head-first, then extracting the remaining liquid (or possibly even solidifying it, perhaps through cooling or polymerisation?), causing the hole to collapse around the bolt thus securing the head to prevent the bolt from rotating (I suspect the pressure of the rock on the shank would probably accomplish this even if the bolt didn't have a head) and finally the nut could be threaded onto the protruding shank-end and torqued-down. If the shear strength of the bolt is the most likely cause of failure, a considerable torque would need to be applied to increase the friction between the surfaces being mated so as to use the bolt's tensile-strength advantage to resist the shear load and oh goodness I've just been nerd-sniped....) [[Special:Contributions/172.68.186.51\|172.68.186.51]] 15:21, 23 April 2025 (UTC)
		+
		+	I found out the joke, I think. Anchor bolts protect against tornado damage, not earthquake damage.
		+	[[User:MisterAnchorBolt\|MisterAnchorBolt]] ([[User talk:MisterAnchorBolt\|talk]]) 01:09, 26 April 2025 (UTC)

@@ Line 41: / Line 41: @@
 This is basically the plot of the Mike McQuay book ''Richter 10'', except for the book using "spot welding" with buried nukes. [[Special:Contributions/172.71.178.58|172.71.178.58]] 10:03, 22 April 2025 (UTC)
+<span id="Trivia"></span>
 The Trivia description of screws vs. bolts isn't entirely correct:
 (1) At the very least, screws aren't drilled in to holes; they're screwed in. They may have a pilot hole drilled before the screw is screwed in (to prevent the screw from splitting the material being fastened), which is what this section appears to be trying to describe, but for most common applications they don't (instead making their own holes as they're screwed in, with no drilling taking place).

@@ Line 46: / Line 46: @@
 (2) A bigger issue is the description of screws as necessarily being pointed, and the implication (final sentence of this section) that they're necessarily self-tapping. Many types of screws (eg. machine screws, socket screws, set screws, grub screws, etc. etc.) are neither pointed nor self-tapping. Rather, the difference between screws and bolts is that screws are screwed in (meaning that torque must be applied along a lever radial to the direction of drive in order to drive the screw into the material), whereas bolts are driven in (meaning pressure is applied in the direction of drive in order to drive the bolt into the material) and then torque is applied to a nut to make fast. As has been mentioned both in this discussion page and at the citation in the Trivia section, bolts often have an un-threaded length of shank but screws (usually) don't: this is a *consequence* of the difference between them (viz. that one is screwed in and the other is driven in), not the difference between them itself (it can't be, since bolts don't always have an un-threaded length of shank and some rare types of screws do have one). If "screwed in" is too circular a way to define screws, "threaded-in", "rotated-in", or "torqued-in" seem like reasonable synonyms, and if a succinct defining criterion is needed I suggest "A screw either makes its own thread or makes use of a captive thread and is torqued-in to the material being fastened, whereas a bolt is driven in to the material straight, without being rotated, and then a nut is torqued onto the end of it."
 (3) Since presumably Randall's anchor bolt was driven in straight, he is correct to refer to it as a bolt rather than a screw. [[Special:Contributions/172.68.186.51|172.68.186.51]] 15:21, 23 April 2025 (UTC)
 The project could be conducted entirely from the surface, without complicated sub-surface operations, by drilling a hole the diameter of the bolt head - not the bolt shank - and filling it with some high-density liquid (mercury? lava? trans-uranic elements?) to prevent pressure from closing the hole immediately, then inserting the bolt head-first, then extracting the remaining liquid (or possibly even solidifying it, perhaps through cooling or polymerisation?), causing the hole to collapse around the bolt thus securing the head to prevent the bolt from rotating (I suspect the pressure of the rock on the shank would probably accomplish this even if the bolt didn't have a head) and finally the nut could be threaded onto the protruding shank-end and torqued-down. If the shear strength of the bolt is the most likely cause of failure, a considerable torque would need to be applied to increase the friction between the surfaces being mated so as to use the bolt's tensile-strength advantage to resist the shear load and oh goodness I've just been nerd-sniped....) [[Special:Contributions/172.68.186.51|172.68.186.51]] 15:21, 23 April 2025 (UTC)

@@ Line 44: / Line 44: @@
 The Trivia description of screws vs. bolts isn't entirely correct:
 (1) At the very least, screws aren't drilled in to holes; they're screwed in. They may have a pilot hole drilled before the screw is screwed in (to prevent the screw from splitting the material being fastened), which is what this section appears to be trying to describe, but for most common applications they don't (instead making their own holes as they're screwed in, with no drilling taking place).
-(2) A bigger issue is the description of screws as necessarily being pointed, and the implication (final sentence of this section) that they're necessarily self-tapping. Many types of screws (eg. machine screws, socket screws, set screws, grub screws, etc. etc.) are neither pointed nor self-tapping. Rather, the difference between screws and bolts is that screws are screwed in (meaning that torque must be applied radially to the direction of drive to drive the screw into the material), whereas bolts are driven in (meaning pressure is applied in the direction of drive to drive the bolt into the material) and then torque is applied to a nut to make fast. As has been mentioned both in this discussion page and at the citation in the Trivia section, bolts can have an un-threaded length of shank but screws cannot: this is a *consequence* of the difference between them (viz. that one is screwed in and the other is driven in), not the difference between them itself (it can't be, since bolts don't always have an un-threaded length of shank). If "screwed in" is too circular a way to define screws, "threaded-in", "rotated-in", or "torqued-in" seem like reasonable synonyms, and if a succinct defining criterion is needed I suggest "A screw either makes its own thread or makes use of a captive thread and is torqued-in to the material being fastened, whereas a bolt is driven in to the material straight, without being rotated, and then a nut is torqued onto the end of it."
+(2) A bigger issue is the description of screws as necessarily being pointed, and the implication (final sentence of this section) that they're necessarily self-tapping. Many types of screws (eg. machine screws, socket screws, set screws, grub screws, etc. etc.) are neither pointed nor self-tapping. Rather, the difference between screws and bolts is that screws are screwed in (meaning that torque must be applied along a lever radial to the direction of drive in order to drive the screw into the material), whereas bolts are driven in (meaning pressure is applied in the direction of drive in order to drive the bolt into the material) and then torque is applied to a nut to make fast. As has been mentioned both in this discussion page and at the citation in the Trivia section, bolts often have an un-threaded length of shank but screws (usually) don't: this is a *consequence* of the difference between them (viz. that one is screwed in and the other is driven in), not the difference between them itself (it can't be, since bolts don't always have an un-threaded length of shank and some rare types of screws do have one). If "screwed in" is too circular a way to define screws, "threaded-in", "rotated-in", or "torqued-in" seem like reasonable synonyms, and if a succinct defining criterion is needed I suggest "A screw either makes its own thread or makes use of a captive thread and is torqued-in to the material being fastened, whereas a bolt is driven in to the material straight, without being rotated, and then a nut is torqued onto the end of it."
 (3) Since presumably Randall's anchor bolt was driven in straight, he is correct to refer to it as a bolt rather than a screw. [[Special:Contributions/172.68.186.51|172.68.186.51]] 15:21, 23 April 2025 (UTC)
 The project could be conducted entirely from the surface, without complicated sub-surface operations, by drilling a hole the diameter of the bolt head - not the bolt shank - and filling it with some high-density liquid (mercury? lava? trans-uranic elements?) to prevent pressure from closing the hole immediately, then inserting the bolt head-first, then extracting the remaining liquid (or possibly even solidifying it, perhaps through cooling or polymerisation?), causing the hole to collapse around the bolt thus securing the head to prevent the bolt from rotating (I suspect the pressure of the rock on the shank would probably accomplish this even if the bolt didn't have a head) and finally the nut could be threaded onto the protruding shank-end and torqued-down. If the shear strength of the bolt is the most likely cause of failure, a considerable torque would need to be applied to increase the friction between the surfaces being mated so as to use the bolt's tensile-strength advantage to resist the shear load and oh goodness I've just been nerd-sniped....) [[Special:Contributions/172.68.186.51|172.68.186.51]] 15:21, 23 April 2025 (UTC)

← Older revision		Revision as of 15:34, 23 April 2025
Line 47:		Line 47:
	(3) Since presumably Randall's anchor bolt was driven in straight, he is correct to refer to it as a bolt rather than a screw. [[Special:Contributions/172.68.186.51\|172.68.186.51]] 15:21, 23 April 2025 (UTC)		(3) Since presumably Randall's anchor bolt was driven in straight, he is correct to refer to it as a bolt rather than a screw. [[Special:Contributions/172.68.186.51\|172.68.186.51]] 15:21, 23 April 2025 (UTC)

−	The project could be conducted entirely from the surface, without sub-surface operations, by drilling a hole the diameter of the bolt head - not the bolt shank- and filling it with some high-density liquid (mercury? lava? trans-uranic elements?) to prevent pressure from closing the hole immediately, then inserting the bolt, then extracting the remaining liquid (or possibly even solidifying it, perhaps through cooling or polymerisation?), causing the hole to collapse around the bolt thus securing the head to prevent the bolt from rotating (I suspect the pressure of the rock on the shank would probably accomplish this even if the bolt didn't have a head) and finally the nut could be threaded onto the protruding ~~bolt~~-end and torqued-down. If the shear strength of the bolt is the most likely cause of failure, a considerable torque would need to be applied to increase the friction between the surfaces being mated so as to use the bolt's tensile-strength advantage to resist the shear load and oh goodness I've just been nerd-sniped....) [[Special:Contributions/172.68.186.51\|172.68.186.51]] 15:21, 23 April 2025 (UTC)	+	The project could be conducted entirely from the surface, without complicated sub-surface operations, by drilling a hole the diameter of the bolt head - not the bolt shank - and filling it with some high-density liquid (mercury? lava? trans-uranic elements?) to prevent pressure from closing the hole immediately, then inserting the bolt head-first, then extracting the remaining liquid (or possibly even solidifying it, perhaps through cooling or polymerisation?), causing the hole to collapse around the bolt thus securing the head to prevent the bolt from rotating (I suspect the pressure of the rock on the shank would probably accomplish this even if the bolt didn't have a head) and finally the nut could be threaded onto the protruding shank-end and torqued-down. If the shear strength of the bolt is the most likely cause of failure, a considerable torque would need to be applied to increase the friction between the surfaces being mated so as to use the bolt's tensile-strength advantage to resist the shear load and oh goodness I've just been nerd-sniped....) [[Special:Contributions/172.68.186.51\|172.68.186.51]] 15:21, 23 April 2025 (UTC)

← Older revision		Revision as of 15:31, 23 April 2025
Line 47:		Line 47:
	(3) Since presumably Randall's anchor bolt was driven in straight, he is correct to refer to it as a bolt rather than a screw. [[Special:Contributions/172.68.186.51\|172.68.186.51]] 15:21, 23 April 2025 (UTC)		(3) Since presumably Randall's anchor bolt was driven in straight, he is correct to refer to it as a bolt rather than a screw. [[Special:Contributions/172.68.186.51\|172.68.186.51]] 15:21, 23 April 2025 (UTC)

−	The project could be conducted entirely from the surface, without sub-surface operations, by drilling a hole the diameter of the bolt head - not the bolt shank- and filling it with some high-density liquid (mercury? lava? trans-uranic elements?) to prevent pressure from closing the hole immediately, then inserting the bolt, then extracting the remaining liquid, causing the hole to collapse around the bolt thus securing the head to prevent the bolt from rotating (I suspect the pressure of the rock on the shank would probably accomplish this even if the bolt didn't have a head) and finally the nut could be threaded onto the protruding bolt-end and torqued-down. If the shear strength of the bolt is the most likely cause of failure, a considerable torque would need to be applied to increase the friction between the surfaces being mated so as to use the bolt's tensile-strength advantage to resist the shear load and oh goodness I've just been nerd-sniped....) [[Special:Contributions/172.68.186.51\|172.68.186.51]] 15:21, 23 April 2025 (UTC)	+	The project could be conducted entirely from the surface, without sub-surface operations, by drilling a hole the diameter of the bolt head - not the bolt shank- and filling it with some high-density liquid (mercury? lava? trans-uranic elements?) to prevent pressure from closing the hole immediately, then inserting the bolt, then extracting the remaining liquid (or possibly even solidifying it, perhaps through cooling or polymerisation?), causing the hole to collapse around the bolt thus securing the head to prevent the bolt from rotating (I suspect the pressure of the rock on the shank would probably accomplish this even if the bolt didn't have a head) and finally the nut could be threaded onto the protruding bolt-end and torqued-down. If the shear strength of the bolt is the most likely cause of failure, a considerable torque would need to be applied to increase the friction between the surfaces being mated so as to use the bolt's tensile-strength advantage to resist the shear load and oh goodness I've just been nerd-sniped....) [[Special:Contributions/172.68.186.51\|172.68.186.51]] 15:21, 23 April 2025 (UTC)

← Older revision		Revision as of 15:21, 23 April 2025
Line 41:		Line 41:

	This is basically the plot of the Mike McQuay book ''Richter 10'', except for the book using "spot welding" with buried nukes. [[Special:Contributions/172.71.178.58\|172.71.178.58]] 10:03, 22 April 2025 (UTC)		This is basically the plot of the Mike McQuay book ''Richter 10'', except for the book using "spot welding" with buried nukes. [[Special:Contributions/172.71.178.58\|172.71.178.58]] 10:03, 22 April 2025 (UTC)
		+
		+	The Trivia description of screws vs. bolts isn't entirely correct:
		+	1) At the very least, screws aren't drilled in to holes; they're screwed in. They may have a pilot hole drilled before the screw is screwed in (to prevent the screw from splitting the material being fastened), which is what this section appears to be trying to describe, but for most common applications they don't (instead making their own holes as they're screwed in, with no drilling taking place).
		+	2) A bigger issue is the description of screws as necessarily being pointed, and the implication (final sentence of this section) that they're necessarily self-tapping. Many types of screws (eg. machine screws, socket screws, set screws, grub screws, etc. etc.) are neither pointed nor self-tapping. Rather, the difference between screws and bolts is that screws are screwed in (meaning that torque must be applied radially to the direction of drive to drive the screw into the material) whereas bolts are driven in (meaning pressure is applied in the direction of drive to drive the bolt into the material) and then torque is applied to a nut to make fast. As has been mentioned both in this discussion page and at the citation in the Trivia section, bolts can have an un-threaded length of shank but screws cannot: this is a consequence of the difference between them (viz. that one is screwed in and the other is driven in), not the difference between them itself (it can't be since bolts don't always have an un-threaded length of shank. If "screwed in" is too circular a way to define screws, "threaded-in", "rotated-in", or "torqued-in" seem like reasonable synonyms, and if a succinct defining criterion is needed I suggest "A screw either makes its own thread or makes use of a captive thread and is torqued-in to the material being fastened, whereas a bolt is driven in to the material straight, without being rotated, and then a nut is torqued onto the end of it."
		+	3) Since presumably Randall's anchor bolt was driven in straight, he is correct to refer to it as a bolt rather than a screw. [[Special:Contributions/172.68.186.51\|172.68.186.51]] 15:21, 23 April 2025 (UTC)
		+
		+	The project could be conducted entirely from the surface, without sub-surface operations, by drilling a hole the diameter of the bolt head - not the bolt shank- and filling it with some high-density liquid (mercury? lava? trans-uranic elements?) to prevent pressure from closing the hole immediately, then inserting the bolt, then extracting the remaining liquid, causing the hole to collapse around the bolt thus securing the head to prevent the bolt from rotating (I suspect the pressure of the rock on the shank would probably accomplish this even if the bolt didn't have a head) and finally the nut could be threaded onto the protruding bolt-end and torqued-down. If the shear strength of the bolt is the most likely cause of failure, a considerable torque would need to be applied to increase the friction between the surfaces being mated so as to use the bolt's tensile-strength advantage to resist the shear load and oh goodness I've just been nerd-sniped....) [[Special:Contributions/172.68.186.51\|172.68.186.51]] 15:21, 23 April 2025 (UTC)

← Older revision		Revision as of 10:03, 22 April 2025
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	:And all the state's boltings, and all the state's men,/Couldn't put {{w\|Old_Man_of_the_Mountain#Collapse\|Humpty together again}}. Vanity of vanities ... [[Special:Contributions/172.68.22.41\|172.68.22.41]] 14:32, 21 April 2025 (UTC)		:And all the state's boltings, and all the state's men,/Couldn't put {{w\|Old_Man_of_the_Mountain#Collapse\|Humpty together again}}. Vanity of vanities ... [[Special:Contributions/172.68.22.41\|172.68.22.41]] 14:32, 21 April 2025 (UTC)
		+
		+	This is basically the plot of the Mike McQuay book ''Richter 10'', except for the book using "spot welding" with buried nukes. [[Special:Contributions/172.71.178.58\|172.71.178.58]] 10:03, 22 April 2025 (UTC)

← Older revision		Revision as of 14:32, 21 April 2025
Line 37:		Line 37:

	It's odd to me that the discussion of anchor bolts talks about holding buildings to foundations, and furniture to the floor, but not the geotechnical engineering application to prevent falling rocks/erosion. An anchor bolt in that case is generally cemented into a hole in the rock, and then tensioned against the face of the hill/cliff to stabilize it.[[Special:Contributions/172.70.38.246\|172.70.38.246]] 13:36, 21 April 2025 (UTC)		It's odd to me that the discussion of anchor bolts talks about holding buildings to foundations, and furniture to the floor, but not the geotechnical engineering application to prevent falling rocks/erosion. An anchor bolt in that case is generally cemented into a hole in the rock, and then tensioned against the face of the hill/cliff to stabilize it.[[Special:Contributions/172.70.38.246\|172.70.38.246]] 13:36, 21 April 2025 (UTC)
		+
		+	:And all the state's boltings, and all the state's men,/Couldn't put {{w\|Old_Man_of_the_Mountain#Collapse\|Humpty together again}}. Vanity of vanities ... [[Special:Contributions/172.68.22.41\|172.68.22.41]] 14:32, 21 April 2025 (UTC)