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® WorleyParsons <br /> resources&energy <br /> Safety cages and/or other devices will be provided for fixed ladders as required by <br /> applicable codes and regulations. At a minimum, ladders that may expose a person to a <br /> fall of greater than twenty(20) feet will have a cage. <br /> Gates will be installed as fall protection to protect all ladder openings. The gates will fall <br /> into two categories: a single bar gate and a gate that is equal to a guardrail (i.e. top rail, <br /> mid rail and equal strength). <br /> A single bar gate may be used: <br /> For offset platforms between fixed ladders used only for passing through (not a work <br /> area). <br /> Caged ladders to a pass through area. <br /> A guardrail equivalent gate is required as follows: <br /> • A work platform that is accessed by a fixed ladder without a cage must be guarded by <br /> a guardrail or gate equivalent to a guardrail system so offset that a person cannot walk <br /> directly into the opening. <br /> • A work platform this is accessed by a floor opening ladder way must be protected on <br /> all sides except that a gate equivalent guardrail system may be used. <br /> • An open sided work platform that is accessed by a caged fixed ladder on the side of <br /> the platform, where the ladder's cage is at least as high as the guardrail system <br /> protecting the work platform, must have a guardrail equivalent gate. <br /> Stairs, ladders and safety cages will be hot dipped galvanized. Ladder rungs will be of a <br /> non-slip design. <br /> 2.3.12 Structural Concrete <br /> Concrete will comply with ACI 301 and ASTM C94. Materials will be handled and <br /> stored as recommended in ACI 304. Mixes will be formulated to produce durable <br /> concrete of the required strength for the anticipated exposure conditions. <br /> Admixtures may be added at the discretion of the Contractor with the consent of the <br /> Engineer, provided that qualifying mix designs are made accordingly. <br /> Where concrete is to be placed by pumping, special consideration will be given to the <br /> concrete mix to provide workability, quality, and strength required for the pumping <br /> operation. <br /> Calcium chloride or admixtures containing calcium chloride will not be used. <br /> 2.3.13 Reinforcing Steel <br /> Lodi Energy Center 3.2-9 LEC AFC <br /> 071608 Rev.A <br />