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Answered in 5 minutes by:
1/14/2013
walkereng, Consultant
Category: Structural Engineering
Satisfied Customers: 5,454
Experience: Over 35 years of Structural Engineering experience.
VerifiedCustomer:
I can help
Customer:
Let me read your question a bit closer
Customer:
Before we get started I’d like to point out that a Professional Engineer’s standard of care typically includes a site visit to assess field conditions and get an overall understanding of the structure. This can obviously not be accomplished through the internet. The information provided here is meant for planning purposes only (general sizing and budgeting) and is based on the information provided by you. All loading cases considered are for vertical loads only, no lateral analysis has been completed. The information should be verified by a professional engineer who can visit the site to ensure that potentially important information has not been overlooked or omitted.
JACUSTOMER-3fy0herz- :
Hello anyone there
Customer:
Will you be able to provide any lateral bracing of the steel beam along the span?
JACUSTOMER-3fy0herz- :
no
Customer:
What will the 1200 lb load generally be?
JACUSTOMER-3fy0herz- :
a boat mold
Customer:
So it will be moved slowly along the beam?
JACUSTOMER-3fy0herz- :
yes ,and only once a month or so
Customer:
do you know the Dead Load of the trolley itself
JACUSTOMER-3fy0herz- :
total weigh with trolly is approx 1000 lb
Customer:
So you will have a 1,200 pound boat mold and a 1,000 pound trolley, equal to a total of 2,200 load on the beam?
JACUSTOMER-3fy0herz- :
no approx 1000 to 1200 total weight .trolly only weighs about 75 lf
Customer:
Ok, that makes sense, I was thinking 1,000 lbs did not make sense for the trolley. Let me run a few numbers, hold on.
Customer:
The W8x31 (50 ksi) steel beam should be fine. Your total loading is not a lot, but since you will not be able to provide lateral bracing of the compression flange along the span, you need this larger beam.
You will need to have a local engineer detail your connections, size your support columns and determine foundation requirements.
JACUSTOMER-3fy0herz- :
thank you for your help ,thought the w8x31 might have been an overkill
Customer:
Just a thought, can you use a structural tube?
Customer:
If you can, you will not have to worry about lateral bracing or buckling
JACUSTOMER-3fy0herz- :
no ,need the beam for a trolly to run on they are not designed for tube
Customer:
Ok, I was not sure if there was a trolley made to use with a structural tube.
JACUSTOMER-3fy0herz- :
thanks again for the help
Customer:
Good Luck with your project!
Customer:
If you feel you have received a satisfactory answer to your question, click the Rating button that is appropriate. Experts are credited for each adequately rated answer they provide. If you have additional questions, please let me know. Thanks
walkereng, Consultant
Category: Structural Engineering
Satisfied Customers: 5,454
Experience: Over 35 years of Structural Engineering experience.
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