ICC Prestressed Concrete - Codes and Plans Certification Preparation Exam.

ICC Prestressed Concrete - Codes and Plans Certification Preparation Exam. Module 1. Prestressed concrete is: - CORRECT ANSWER - The tensioning of steel-stranded cables prior to concrete placement - The tensioning of steel-stranded cables after concrete has been placed and hardened - Concrete that has received a tensile load prior to any service loads Module 1. The use of a prestressed concrete system will achieve the following: - CORRECT ANSWER - Reduced thickness of concrete, less conventional reinforcing steel and adequate crack control Module 1. Once tensioned, the tensioning cables are held securely in a tensioned state by: - CORRECT ANSWER Wedges that have been seated Module 1. The end of a cable that terminates within a concrete slab, thus rendering it in accessible from outside the concrete is known as: - CORRECT ANSWER The dead end Module 1. The presence of sheathing on a wire-stranded cable indicates that: - CORRECT ANSWER It will be used in an unbonded system application Module 1. The most common post-tension cable tendons in use today are made up of: - CORRECT ANSWER 7 steel strands of wire wrapped together Module 1. In an unbonded system, the force applied to the concrete after tensioning: - CORRECT ANSWER Comes from the anchorage zone only Module 2. Post-tension manufacturing plants must be certified by: - CORRECT ANSWER PTI Unbonded Plant Certification Program Module 2. Prior to cutting the tendon tails after tensioning, the field records of stressing activities must be forwarded to and approved by: - CORRECT ANSWER The engineer of record Module 2. In the event that a new set of stressing equipment is delivered to the project, this equipment should contain __________ for review prior being used on-site: - CORRECT ANSWER A current calibration chart relating gauge pressure to force applied Module 2. According to the Field Procedures Manual for Unbonded Single Strand Tendons, all of the following items are necessary for post-tension document control except: A) Concrete Strength Results B) Shipping Lists C) Material Certifications D) Approved Installation Drawings - CORRECT ANSWER A) Concrete Strength Results Module 2. When reporting stressing results, the following information is necessary to record: A) Jack and gauge serial number B) Elongation measurements and percentage deviation C) Both A and B D) Gauge Manufacturer E) All three, A, B, and D - CORRECT ANSWER C) Both A and B Module 2. When moving post-tension cables across the site, the use of _______ is permitted. A) Nylon slings, with unloading as close as placement as possible B) Smooth finished chains with limited use C) Epoxy coated high strength wire with limited use D) A large front loader exercising caution - CORRECT ANSWER Nylon slings, with unloading as close to the placement as possible Module 2. When storing post-tension cables, care must be taken to: - CORRECT ANSWER Prevent the cables from being exposed to weather elements and moisture Module 2. During deliver, it is the ______________ responsibility to ensure the delivered items match the shipping list. - CORRECT ANSWER Buyer's Module 2. According to the Field Procedures Manual for Unbonded Single Strand Tendons, the follow documents must be kept on site: - CORRECT ANSWER 1) Approved Installation Drawings 2) Shipping Lists 3) Material Certifications 4) Jack Calibrations 5) Stressing Records Module 2. Install drawings show: - CORRECT ANSWER Plan views, elevation views, and details so the subcontractor and inspector can clearly see the tendon layout. This includes tendon profiles, also known as drape. Module 2. Drape - CORRECT ANSWER Tendon profiles Module 2. Material Certifications - CORRECT ANSWER Documents that describe the cables' physical properties and factory testing results. Module 2. Stressing records, written by the inspector, should include: - CORRECT ANSWER - Location of tendons stressed (grid line to grid line) - Type of tendons stressed (banded, uniform, beans, temperature) - Gauge/jack used - Date, time, and weather during stressing - Stressing crew - Elongations based on a traceable numbering system - Any deviations from tolerances Module 2. As an inspector, you should immediately check for ____________ when you see the stressing equipment. I.e., not on the day of stressing. - CORRECT ANSWER Jack Calibration Records Module 3. On a two-way flat plate, a minimum of ___________ over each column first. A) 2 uniform tendons should be placed B) 1 group of banded tendons should be placed C) 50% of the bottom bars should be placed D) (3) #5 support bars should be placed - CORRECT ANSWER A) 2 uniform tendons should be placed Module 3. A minimum of ___________ of tendon tail must be available at the stressing end. - CORRECT ANSWER A) 8 inches B) 12 inches C) 24 inches D) No specific length required Module 3. When installing a post-tension system, the installer should have a minimum of: A) 5 years experience B) A PTI Certified Installer C) 5 years experience and be a PTI Certified Installer D) 5 years experience, be a PTI Certified Installer and use the same crew that installs the system to stress the system - CORRECT ANSWER D) 5 years experience, be a PTI Certified Installer and use the same crew that installs the system to stress the system