By ACI Committee 376
This code presents minimal specifications for layout and building of bolstered concrete and prestressed concrete constructions for the garage and containment of refrigerated liquefied gases (RLG) with provider temperatures among +40 and –325°F. the foundations indexed herein are acceptable to concrete foundations of double-steel tanks topic to the approval of the landlord.
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Additional info for ACI 376-11 - Code Requirements for Design and Construction of Concrete Structures for the Containment of Refrigerated Liquefied Gases and Commentary
11 Following current RLG tank practices, this code uses two levels of earthquake: OBE and SSE. 3 should be used. 0 should be used. 2. 12 Explosion and impact loads generally have little or no effect on the primary tank of a double wall tank. Depending on the foundation-structure interaction, however, the response of the entire structure may induce forces in the primary container. 2. 3. 0 should be used where needed. 3. 2 should be used for all other normal loading conditions in Eq. 9 should be used when the dead load reduces the effect of other loads, as per ACI 350, Eq.
9 load factor is consistent with ACI 350, Eq. (9-6) and (9-7), when the higher dead load reduces the effect of other loads. 0 shall be used for all prestressing loads, except in the case of the anchorage zones. 2 shall be applied to the maximum prestressing steel jacking force, as per ACI 350. 2 applied to the maximum tendon jacking force represents a design load of approximately 113 percent of the specified prestressing steel yield strength, but not more than 96 percent of the nominal ultimate strength of the prestressing steel.
The coefficient of hydraulic conductivity K (in units of length/time) is related to the coefficient of intrinsic permeability k (in units of length2) by the equation K = krg/µ, where ρ is the density of the fluid, µ is the dynamic viscosity of the fluid, and g is the gravitational constant. There are inherent technical difficulties (Hanaor 1982, 1985; Hanaor and Sullivan 1983) that include, in particular, achievement of a good seal around the test specimen at such low temperatures. The moisture content of the concrete at the time of test should reflect, as far as possible, the expected moisture content of the concrete in service but should not be higher.
ACI 376-11 - Code Requirements for Design and Construction of Concrete Structures for the Containment of Refrigerated Liquefied Gases and Commentary by ACI Committee 376