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Thread: Derrick rigging and redneck cranes

  1. #111
    Mac Daddy Sponsor Al Smith's Avatar
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    In looking at the picture of the arch I wasn't aware that Pittsburgh-Des Moines Steel was involved in it .PDM was a oil tank,water tank builder that sold out to Chicago Bridge and iron .Funny according my references CBI only ever built one bridge .

  2. #112
    More biners!!! Sponsor pantheraba's Avatar
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    That is pucker factor. Incredible feat. A windy day would be most troubling for me.

    The net...looks like it actually caught some stuff.
    Gary

  3. #113
    TreeHouser Sponsor cory's Avatar
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    Amazing pics of an incredible project. Thanks for posting
    Mastery is an illusion, grace a momentary gift, apprenticeship endless.

  4. #114
    Treehouser Sponsor SeanKroll's Avatar
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    https://en.m.wikipedia.org/wiki/Gateway_Arch

    Thought I'd double check my trivia... They used hoses to spray the arch with water to fight thermal expansion in order to install the keystone at the top.



    I went up in it as a kid.

    As I recall, the thing we rode in (maybe seated???) Moved up, then sideways, up, sideways.
    If it looks like I asked a question, but put a period, it's probably a question.
    Don't know why I'm question-mark challenged online. 😀 New Year's Resolution, better proof reading.

  5. #115
    TreeHouser Sponsor cory's Avatar
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    Cool link, thanks.
    Mastery is an illusion, grace a momentary gift, apprenticeship endless.

  6. #116
    Treehouser Sponsor Tree09's Avatar
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    I didn't know that, good thinking there! Thx Sean
    Kyle


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