Specifications include, but are not limited to: 2. 02.2 – STRENGTH REQUIREMENTSThe base shall meet the following strength requirements.•When supported from one side, 500 pounds of back fill material shall be able tobe placed on the unsupported side without deformation of the access opening orfoundation.2.02.3 – STAKING HOLES Staking holes, of 3/8” in diameter, shall be included in the bottom support flange to be used with staking rebar. A minimum of 2 holes per side, evenly spaced, and 1 hole on each end are required. 2.03.1 – COVERSThe cover shall be rated for 5000 pounds of load. Cover shall be “non-slip” in design per Western Underground Committee Guide 3.6. 2.03.2 - IDENTIFICATIONThe cover shall be embossed with the words “Tacoma Power” located in the center of the cover. 2.04 – RISER CHARACTERISTICSThe riser system shall allow for the elevation of the cover to be increased in increments of 2 to 4 inches. Risers shall attach to the base unit by attachment to the top of the base unit.2.04.1 – STACKABILITYThe risers shall be capable of being stacked upon each other to reach the acceptable grade for the cover. 2.04.2 – COVER ACCEPTABILITYCovers provided per this specification shall be accepted onto the risers and incorporate the same locking system onto the risers as to the base unit.2.04.3 – PAVING RING The riser provided shall be capable of being used as a paving ring or form for the cover.