The San Franciso Fire Department makes its own wooden ladders by hand

Re:The San Franciso Fire Department makes its own wooden lad... by burger_moon on Wednesday July 11, 2018 @01:32PM (#17508687)

I looked up g11 and g10 for their structural heat limits, because I know they have a higher heat resistance than most fiberglass, and are limited to around 150c/ 300f. I looked up what a typical house fire burns at which is 600c/1100f.

This is actually a great case where asbestos shines. It's nonconductive and can stand very high temperatures. If not for the whole cancer thing.

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Re:The San Franciso Fire Department makes its own wooden lad... by CarVac on Wednesday July 11, 2018 @01:59PM (#17508919)

The fibers aren't that big an issue. If you want better heat tolerant fibers you can use basalt fiber.

The problem is the matrix, which softens under heat unless you use exotic things like ceramic matrix composites which are brittle.

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Re:The San Franciso Fire Department makes its own wooden lad... by mmagin on Wednesday July 11, 2018 @09:34PM (#17511582)

Some casual googling earlier suggests to me that fiberglass ladders are fiberglass/polyester, not fiberglass/epoxy.

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Re:The San Franciso Fire Department makes its own wooden lad... by wnoise on Wednesday July 11, 2018 @01:59PM (#17508923)

> This is actually a great case where asbestos shines.

Asbestos is heavy as rock.

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Re:The San Franciso Fire Department makes its own wooden lad... by JackCh on Wednesday July 11, 2018 @03:20PM (#17509555)

Asbestos is rock.

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Re:The San Franciso Fire Department makes its own wooden lad... by shub on Thursday July 12, 2018 @02:59AM (#17512738)

And rock is as heavy as rock.

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