ACI Special Inspector case studies
ACI Special Inspector · Put your knowledge to work in context.
The Concrete Construction Special Inspector (CCSI) credential is one of the inspection programs administered within the ACI certification system, which the source describes as offering over 30 certification programs designed to form a minimum qualification for personnel employed within the concrete construction industry. Within that system, inspection programs are grouped separately from field and laboratory testing programs; the Concrete Construction Special Inspector sits in the Concrete Construction Inspection category alongside the Concrete Transportation Construction Inspector. The credential is aimed at personnel whose job is to inspect concrete installation and construction practices - verifying that work in the field conforms to project requirements and accepted practice - rather than at the technicians who perform and report field or laboratory tests. Because the exam draws on both inspection practice and the testing knowledge an inspector relies on, preparation should combine a working command of concrete construction inspection fundamentals with the field and laboratory testing knowledge that supports inspection decisions. The ACI Special Inspector case studies are 5 cases and about 2,834 words.
1Slump Test Disagreement on a Pumped Placement
You are the special inspector on a mid-rise slab pour. The mix is a 4000 psi, 3/4 in.
729 words, about 4 min2Cylinder Break Results Below Design Strength at 28 Days
A set of six 6x12 in. cylinders from a column pour (4000 psi design) is tested at 28 days.
548 words, about 3 min3Air Content and Freeze-Thaw Exposure on a Exterior Wall
You are inspecting an exterior foundation wall in a cold climate (severe freeze-thaw exposure). The specified mix is air-entrained with a target air content of 6-8% for 3/4 in.
549 words, about 3 min4Cold-Weather Placement and Protection Verification
You are the special inspector on a slab-on-grade pour in November. Ambient temperature is 38°F and falling; the forecast low is 25°F overnight.
534 words, about 3 min5Rebar Cover Deficiency Discovered Before a Beam Pour
During pre-pour inspection of a reinforced concrete beam, you find that the bottom longitudinal bars have only 1 in. of clear cover to the form, while the drawings specify 1.5 in.
474 words, about 2 min