Type I – Industrial: Heavy-duty with load capacity, not more than 250 pounds.Type IA: Built for occupant loads up to 300 lbs.Type 1AA: Extra-heavy duty for up to 350 lbs.Type II – Commercial: Medium-duty with load capacity, not more than 225 pounds.Type III – Household: Light-duty with a load capacity of 200 pounds.
Always face the ladder when climbing or descending.Keep both feet on the ladder - never put one foot on a rung and the other foot on a different surface.Do not climb higher than the second rung on stepladders or the third rung on straight or extension ladders.Never stand on the top of the paint shelf of a stepladder.
Too much angle puts pressure on the center of the ladder and often forces the bottom legs to press out away from the structure that you’re working on. Not having enough angle on the ladder causes the ladder to be off center. As you climb, it’s as if you’re falling backward as you climb. When you reach the top, the gravity could pull you and the ladder from the roof.
