Inflection Point Engineering Structural and Civil Engineering Curriculum

Concrete

Module from the Structural and Civil Engineering Curriculum curriculum.

Module 5 - Concrete Design (ACI 318) · Learning Objectives · 1. Specify concrete strength fc prime (3000-5000 psi typical refinery) · 2. Select rebar: Grade 60 (fy=60 ksi) standard deformed bars · 3. Apply ACI 318 cover requirements (3" against earth, 2" exposed) · 4. Compute flexural capacity Mn = As*fy*(d - a/2) · 5. Apply ACI 350 for liquid-containing structures (tighter crack control) · Concrete Mix Design Targets

Service fc (psi) Max W/C Air % Exposure Use
Interior foundation 3000 0.50 0 F0 (indoor) Typical
Exterior foundation 4000 0.45 6% F1 or F2 Refinery outdoor
Tank ringwall 4000 0.45 6% F2 Product contact
Acid tank containment 5000 0.40 6% C2 Chemical
Seawater exposure 5000 0.40 7% S3 Offshore
Sulfate soil (severe) 5000 Type V 0.40 6% S3 Gypsum groundwater

Source: Structural_Civil_Engineering_Curriculum_v1.xlsx · Sheet: Concrete