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Think along the line of a circular plate (fixed along the 2" circumference) subject to a central point load (refer to Roark for the correct formula). Your plate dimension is OK considering your 2" sleeve but the calc will give you the required thickness.

Please refer to API 650

Thanks for your responses. Anchors and a baseplate. I'm looking for a rigging procedure (or advice), perhaps from someone whose being involved in a past project. Lifting it from horizontal to vertical, onto the anchors and safely removing any installation hardware.

Preparing tender for design and installation of 150 foot tall flag pole. Can anyone provide details for its installation?

Recently acuired SACS topside on lease. Is there a SACS for dummies that someone can recommend? Any ideas will be appreciated?

Gentlemen Your assistance appreciated Gerard B. Mahadeo

I have to design a concrete pavement for parking five bell 412 helicopters, approximately 350ft x 90ft. I'm considering 3500psi concrete (cyl), 6" thk, two layers of rft, upper #3 @ 12"BW, lower #4 @ 12"BW. The aft skid tube load is 4772lbs over a contact area 2"x14" i.e. imposed stress 199psi...

Thanks

Looking for guidance in the form of sketches, articles, personal experience for the layout of bunds for 600,000 bbl tank, including drainage, bund cross section, and associated details. Because of real estate restrictions height will be 13 feet. Thanks in advance

Looking for guidance in the form of sketches, articles, personal experience for the layout of bunds for 600,000 bbl tank, including drainage, bund cross section, and associated details. Because of real estate restrictions height will be 13 feet. Thanks in advance gmahadeo@hotmail.com

Need to determine axial strength of screwed joint. Main member 36" diameter pipe with 1" thick wall, 4" diameter sch 80 nipple with 8 no. threads per inch, only 1/2" screwed into main member (self threaded into main ), carbon steel. What maximum tension can this joint...

Need to determine axial strength of screwed joint. Main member 36" diameter pipe with 1" thick wall, 4" diameter sch 80 nipple with 8 no. threads per inch, only 1/2" screwed into main member (self threaded into main ), carbon steel. What maximum tension can this joint...

You don't need advice, you need a Structural Engineer. Someone could get hurt. You question is contrary to the purpose of this forum. It would be irresponsible to respond to your post.

You need to hire a structural engineer to design your roof. Uplift may be a concern as well.

You need to provide details about roof support structure, plate thickness, diameter of tank, time of construction, etc.

Maintain 3" minimum once cast against soil, if using a vapour barrier on 2" minimum sand blinding, then you can reduce to 2" minimum. If reinforcement is heavy, use more spacers. If cast against stone, maintain 2" minimum between highest point on stone surface an rebar. Note...

Didn't I read this post in "foundation engineering," refer to Asshto, section on pipe culverts

I'm a bit confused. Are you saying that the vertical distance between the top of duct and finish surface of floor is five feet? What's between slab and duct, ??? thick slab, ??? back fill, is slab reinforced and what live load applied to slab.

Consult a Structural Engineer. This requires a professional qualified in this discipline and it's safer.

I would like, gmahadeo@tstt.net.tt or gmadadeo@damusgroup.com thanks