Boom Angle
Free checkStart
Free practice checksNCCCO writtenCoursesNCCCO written courseGuidesThe Core written exam: 95 questions, 90 minutes, no calculatorHow to read a crane load chartWritten exam fees, the four-week retake wait and the 12-month windowCrane operator certification requirements: written, practical, medicalNCCCO written test: passing score, test sites and online testingCrane operator license: which states require oneFree toolsLoad chart practice: 10 problems on a practice chartNet capacity worksheet: subtract every deduction, step by stepSling angle calculator: leg tension and load angle factorBoom AngleThe appAbout and editorial policy

NCCCO written question of the day · 20 October 2026

Today's NCCCO written practice question

Site

Why does a crew place timber or composite mats under the outrigger floats before a lift?

Want more than one a day?Take the free 10-question NCCCO written check to find your weakest area, or see the full course.

Take the free 10-question check See the course

Stay in touch while you study

Leave your email and we'll send NCCCO written study tips and offers. Come back here for a new question every day.

Original practice question written to NCCCO's published content outline. Never a real or recalled exam question. A new question appears each day at midnight Eastern.