Recent content by structbear

I understand their is a spec or code put out by IBC concerning corrosion protection into concrete based on its diameter. Can anyone locate this for me Thanks

I don't know how the IBC requirements on this but per the 1997 code when designing for these type of structures within the seismic equation for walls there is (1+ 3hx/hr). For this type of structure, what does hx/hr equal to? I have used several different approaches and have not been questioned...

OK this would be my answer to your questions. 1. I believe that the pilasters would cost more. You have to locate them and cut block etc. I would think that it would be cheaper just to pay more for the block than to build it. But if the contractor thinks he can do it, power to him, he is...

OK my mistake, is there no one out there who can respond to this?

I don't know why but I am seeing 13 replies to my post but can see none.

I don't know how the IBC requirements on this but per the 1997 code when designing for these type of structures within the equation there is (1+ hx/hr). For this type of structure, what does hx/hr equal to? I have used several different approaches and have not been questioned on this but I...

Anyone have any comments on this analysis program. The price appears reasonable.

Check ACI 350 for tank design. Joints are not required as long as you check your z factor.

Can someone provide me with the yield strength of carbon wire steel Thanks

AASHTO 3.6.2.1 States that Dynamic Load allowance (Impact) need not be applied to retaining walls not subject to vertical reactions from the superstructure. I only have a portion of the AREMA code that deals with concrete where it allowa the dissapation if the impact load as determined by the...

How about the UBC Chapter 18. Also ASSHTO has a code for the design of Luminaires, Signs, And Flag poles for Loading and another for Sound walls that will calc the depth of piers

Is the increase of the load required for impact (1.3) for a retaining wall with a railroad surcharge?

Backfill applys a load at the perimeter of the pipe in all directions and creates a radial compressive load and shear load which can be designed per AASHTO

No the lateral load is taketn through the pipe. I have a 96" vertical pipe starting at grade and extending downward 20 feet. This pipe alows access down to horizontally placed pipe that ties perpendicular into this pipe at some depth to allow for cleanout, maintenance etc, This is very...

I have run into several projects for a pipe manufacturer that where the manhole is cast out of concrete that are about 102 " in diameter that extend below grade 16 to 20 feet deep. These manhole have access panels or sump pits of smaller diameter typically not centered in the slab. The...