TOTAL GROSS STORAGE AREA

Measure the total gross area by multiplying the length by the width, in feet, of the inside dimensions of the building. Measure from wall to wall and disregard the inside structures such as fire walls, passageways, ramps, stairwells, and so forth. The result will be the square-foot area or total-gross area. The measurement will be less than the outside dimensions by the thickness' of the walls.

Some storage buildings may have a cutback in the walls or areas not designed for storage. The measurement of the cutback is excluded from the total gross area.

Open storage may be either improved or unimproved. The total gross storage area must include the entire own improved area. For an open unimproved area, report only the area actually occupied by stores or used in support of storage operations.

GROSS SPACE FOR STORAGE OPERATIONS

To calculate the gross space for storage operations, take the gross storage area minus the unusable space, standby spare, and space outgranted to other DOD or non-DOD activities.

NET STORAGE SPACE

To get the NET STORAGE SPACE (in feet), take the total gross space for storage operations minus gross space used for aisles, structural loss, and support spaces. The result will be in square feet.

The aisles include the fire aisles, personnel access aisles, main aisles, and cross aisles.

The structural losses are those areas not usable for storage because of obstructions caused by their characteristics. These include the pillars, posts, ramps, door clearances, and fire walls. These also include the spaces occupied by equipment such as electrical panels, dehumidifiers, and so on. In open storage, structural loss includes fire breaks and clearances for utility lines.

The support space is the gross space used in support of storage operations. These spaces include shipping, receiving, packing and preservation, and offices. Other areas include MHE parking areas, battery charging stations, rest rooms, locker rooms, and the time clock area.

TOTAL CUBIC FEET CAPACITY

For covered storage, the total cubic feet is computed by multiplying the net storage space (SQ FT) by the stacking height. The stacking height is the distance from floor to the unobstructed stacking height that is permitted by safety regulations. See figure 2-8 for an example of determining the cubic space capacity.

Figure 2-8.-Example of determining cubic space capicity.

For own improved storage, compute the total cubic capacity by multiplying the net storage space (SQ FT) by an average stacking height of 10 feet. Remember that stacking height may vary depending on the characteristics of the material.

For unimproved open storage, multiply the square feet occupied by the representative stacking height.

ATTAINABLE CUBIC FEET

The attainable cubic feet is the product of net storage space (SQ FT) multiplied by the stacking height permitted by safety regulations and floor load limitations with the use of MHE. Therefore, the attainable cubic feet represents the cubic space usable or available for storage with existing resources as shown in figure 2-8.

For determining the attainable cubic feet for improved open storage, use the same formula as cubic space capacity.