Notes:
CALT / TWO ROOFTOP ACCESS LADDERS
5/12/2014 12:00:00 AM
PERMANENT LADDERS INSTALLED TO PROVIDE THE REQUIRED ACCESS SHALL COMPLY WITH THE FOLLOWING MINIMUM DESIGN CRITERIA:
1. THE SIDE RAILING SHALL EXTEND ABOVE THE PARAPET OR ROOF EDGE NOT LESS THAN 30 INCHES (762 MM).
2. LADDERS SHALL HAVE RUNG SPACING NOT TO EXCEED 14 INCHES (356 MM) ON CENTER.
3. LADDERS SHALL HAVE A TOE SPACING NOT LESS THAN 6 INCHES (152 MM) DEEP.
4. THERE SHALL BE A MINIMUM OF 18 INCHES (457 MM) BETWEEN RAILS.
5. RUNGS SHALL HAVE A MINIMUM 0.75-INCH (19 MM) DIAMETER AND BE CAPABLE OF WITHSTANDING A 300-POUND (136.1 KG) LOAD.
6. LADDERS OVER 30 FEET (9144 MM) IN HEIGHT SHALL BE PROVIDED WITH OFFSET SECTIONS AND LANDINGS CAPABLE OF WITHSTANDING 100 POUNDS (488.2 KG/M2) PER SQUARE FOOT.
7. LADDERS SHALL BE PROTECTED AGAINST CORROSION BY APPROVED MEANS.
LADDER MAY STOP NO HIGHER THAN 8 FEET ABOVE GROUND.
WORK LIMITED TO INSTALLATION OF TWO ROOFTOP ACCESS LADDERS.