I have completely framed a 28’ x 15’ deck 3 feet off the ground. On one side of the deck a 3’ wide stair will lead straight out onto the patio area. Because the opposite side butts close to a row of trees (10 feet away), I want to create a platform that will force people to make a right turn and descent parallel to the deck. Can someone give me common parameters (dimensions/ footing placement, etc.) for this platform and any special building suggestions? The local permit office does not seem to have anything in the way of guidelines to assist me. Thanks.

Three or four platforms of equal size desending parallel to the deck might look nice!

Thanks for your help PCBuilder but as I re-read what I wrote I realized that I did not describe correctly what I am trying to accomplish. Attached to this small square or rectangular platform I will build stairs that will be accessed by making a right turn as opposed to walking straight out.Building the stairs I can handle but I need help in the design of the platform-what size, support system requirements, etc. Thanks.

Still not enogh information to be able to help. The actual conditions MUST be seen.

I also believe it is unethical and improper to do structural design, no matter how simple, on this site. There are building code issues to be dealt with, and design cannot be properly done without a first-hand visual inspection.

Kaybjay,
As far as the size of the platform you will be better able to make that determination based on the surrounding conditions. If space allows I would go with a wide platform...say 4 feet rather than narrow. As far as design I agree with the previous post by Richard. Design and support of your platform will be based on your present and future use and will also need to meet your local building codes. Take your present plans and proposed plans to your building department for approval. My personal opinion is not "all" projects require "rocket science" or the cost or involvement of engineers, however when dealing with any structure such as your project where human safety and laws are of upmost importants it is highly advisable that you seek local competent assistance in the design of your "platform". There are many load and tolerance factors involved...footer size, lumber size and placement, etc. If the structure ever failed based on design you would have legal recource. Have fun with your project!