ladder design

Does anybody know where I can any guidelines for designing a ship's ladder
to meet code requirements.
ex: max allowable height, and spacing of treads.

Thanks for any help

 

http://tinyurl.com/2o8dj

 

yes:
http://www.osha.gov/

 

I looked and could specify find anything on ship's ladders are there any
other places to look are does somebody know what the requirements are.

 

it's there, trust me, this is my bible for standards, i'll look for you and respond with locale.

 

http://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=STANDARDS&p_id=10237

 

Thanks any help is great this is becoming very frustrating.

and respond with locale.

 

Jack,

I must be Friday, I still don't see any requirements for a ship's ladder
maybe I'm calling it the wrong thing. This will be a slope ladder between 60
to 75 deg's to gain access to a mechanical platform. we were going to use a
ladder with a cage but the company wants what they call a ship's ladder. I
looked and do not see any height restrictions or overall width restrictions
I need to reach approx. 19'-6" to of platform. This will be a steel ladder.

Thanks for previous help maybe I just being a dumbA** today.


http://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=STANDARDS&p_id=10237

 

1915.72(b)(5)

The width between side rails at the base shall be not less than 11 1/2
inches for ladders 10 feet or less in length. For longer ladders this width
shall be increased at least 1/4 inch for each additional 2 feet in length.

Isn't this what your looking for? BTW - check the next standard too.

Matt

 

check www.lapeyrestair.com, they build ship ladders
(left & right treads alt. vertically).

 

Which Code? A ships ladder won't meet the North Carolina Code.

 

Just to add to the confusion, you might take a look at the API650 (American
Petroleum Institute's standard for welded storage tanks). It includes some
pretty detailed specifications for ladders, platforms and walkways.
I sometimes work in "obscure" countries with vague codes - or none at all -
for these kind of things. In such cases I'll use the API650 - with the
client's consent, off course.

Peter

 

North Carolina has no ships???

 

According to my recent disagreement with the NC Department of Insurance -
everything but your house is a place of public accommodation and all new
designs fall under the jurisdiction of Volume 11-c (Accessibility Code) and
a "ships ladder" doesn't meet the criteria for steps or ramps. If you use a
"ships ladder" there must be another accessible route for a handicap person
(wheelchair) to use in which case there is no restriction for a ships ladder
design.

The NC Department of Insurance and some of these "jackasses" who review
plans have lost all traces of common sense!.