Tuesday, March 4, 2008

Design of Reinforced Concrete Silo

Oh well, a new project assigned to me.. actually it was already assigned to me months earlier and right now we received the NTP. I am supposed to do it while I'm doing the Uniliver Bars Area Analysis.

Design of Reinforced Concrete Silo:

References:
ACI Manual of Concrete Practice Part 4
Structural Engineering Handbook

Resources:
Staad Pro 2003
Mathcad 2001 or Mathcad 13

I am currently on the "research" part of the project. I have just finished reading the section in ACI Manual regarding the design of concrete silos.

Few definition of terms (from ACI Manual of Concrete Practice:

1. SILO - Any upright container for storing bulk granular material
2. Hopper - Sloping-walled portion at the bottom of the silo; independent shallow silo (bunker) with sloping walls
3. Stave silos - Silos assembled from small precast concrete units called "staves", usually tounged & grooved, and held together by exterior, adjustable steel hoops

.. construction procedures ( I have never heard these terms before.. maybe because I am not a site engineer.. but of I am supposed to know these stuffs)..

4. SLIPFORMING - construction method in which the forms move continuously during the palcement of concrete; continuity in operation to minimize formation of construction joints; used in casting walls of great height
5. JUMPFORMING - construction method in which fixed forms are used to cast a short increment of height and are then loosened and raised to a higher position after the concrete has hardened; concrete placement not continuous

Others:
6. Homogenizing silos - Silos in which air pressure is used to mix dust-like materials

There are lot of formulas involved and I will not be posting it. It is all in the ACI concrete manual anyway.

So far, all I have are basic understanding on this Silo design. I do expect to know more..

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