ACI STRENGTH EXAM FINAL PAPER 2026
VERIFIED QUESTIONS AND ANSWERS
GRADED A+
⩥ Capping cylinders ensures they meet the requirements for: Answer:
planeness and perpendicularity
⩥ Required thickness of glass plates for capping: Answer: 1/4 in (6mm)
⩥ Required thickness of metal plates for capping: Answer: 0.45 in
(11mm)
⩥ Required thickness of granite AND diabase plates for capping:
Answer: 3 in
⩥ Plates used for sulfur capping have a recessed area to hold the sulfur
that cannot be more than: Answer: 1/2 in deep
⩥ Resulting caps must be perpendicular to the axis of a cylinder within:
Answer: 0.5 degrees
, ⩥ What is the minimum strength of capping materials used on cylinders
with an expected strength of 500 - 7000 psi? Answer: 5000 psi OR the
cylinder strength; whichever is greatest
⩥ What is the maximum thickness of a cap on a cylinder with 500 -
7000 psi? Answer: 5/16 in (8mm)
⩥ What is the maximum AVERAGE thickness of a cap on a cylinder
with 500 - 7000 psi? Answer: 1/4 in (6mm)
⩥ What is the maximum thickness of a cap on a cylinder greater than
7000 psi? Answer: 3/16 in (5mm)
⩥ What is the maximum average thickness of a cap on a cylinder greater
than 7000 psi? Answer: 1/8 in (3mm)
⩥ What is the only capping material that can be used on freshly molded
cylinders? Answer: neat cement paste
⩥ The strength of neat cement paste depends on the: Answer: water-
cement ratio, the age of the cap, and the type of cement used
⩥ What is the approved water-cement ratio for gypsum? Answer: 0.26-
0.30
VERIFIED QUESTIONS AND ANSWERS
GRADED A+
⩥ Capping cylinders ensures they meet the requirements for: Answer:
planeness and perpendicularity
⩥ Required thickness of glass plates for capping: Answer: 1/4 in (6mm)
⩥ Required thickness of metal plates for capping: Answer: 0.45 in
(11mm)
⩥ Required thickness of granite AND diabase plates for capping:
Answer: 3 in
⩥ Plates used for sulfur capping have a recessed area to hold the sulfur
that cannot be more than: Answer: 1/2 in deep
⩥ Resulting caps must be perpendicular to the axis of a cylinder within:
Answer: 0.5 degrees
, ⩥ What is the minimum strength of capping materials used on cylinders
with an expected strength of 500 - 7000 psi? Answer: 5000 psi OR the
cylinder strength; whichever is greatest
⩥ What is the maximum thickness of a cap on a cylinder with 500 -
7000 psi? Answer: 5/16 in (8mm)
⩥ What is the maximum AVERAGE thickness of a cap on a cylinder
with 500 - 7000 psi? Answer: 1/4 in (6mm)
⩥ What is the maximum thickness of a cap on a cylinder greater than
7000 psi? Answer: 3/16 in (5mm)
⩥ What is the maximum average thickness of a cap on a cylinder greater
than 7000 psi? Answer: 1/8 in (3mm)
⩥ What is the only capping material that can be used on freshly molded
cylinders? Answer: neat cement paste
⩥ The strength of neat cement paste depends on the: Answer: water-
cement ratio, the age of the cap, and the type of cement used
⩥ What is the approved water-cement ratio for gypsum? Answer: 0.26-
0.30
