Go Back > Non-UL Chat > Business Bytes

Thread Tools Display Modes
Old 12 May 2017, 11:47 PM
GenYus234's Avatar
GenYus234 GenYus234 is online now
Join Date: 02 August 2005
Location: Mesa, AZ
Posts: 26,377

Originally Posted by RichardM View Post
The speed of falling hailstones depends on their size. Marble-size hail falls at around 20 mph; baseball-size hail can exceed 100 mph.
Some quick Google-work shows that the test they show appears to be the standard FM 4473 test for rigid roofing materials like slate, concrete, or clay.

ETA: No damage from a 2 inch ice ball is the highest level the standard covers and that's what the test is said to be.
Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
U.S. Opens Investigation Into Tesla After Fatal Crash in 'Autopilot' Psihala Crash and Burn 3 08 July 2016 05:59 AM
Nikola Tesla: Predicting cellphones in 1926? Mr. Billion Questionable Quotes 21 21 April 2016 05:45 PM
Naked Intruder Jumping Roof-To-Roof Breaks Into Home, Attacks Couple A Turtle Named Mack Police Blotter 0 04 November 2014 09:14 PM
Tesla coil music Jenn Fauxtography 3 21 July 2010 06:53 AM
Tesla Slept Here snopes Spook Central 0 07 January 2008 11:28 PM

All times are GMT. The time now is 05:09 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.