The elements for computing the space factor used for determining space needs for classrooms and laboratories are the net assignable square feet per student station (NASF/SS), the number of hours in a 45-hour week the space shall be used (hours/week), and the percent of student occupancy of the room when space is in use. These elements are expressed in the formula: 100—Classroom. For the smaller colleges, the guideline was computed on the basis of the following formula: Assume 18 NASF—average station size; Assume 20 hours per week—target room utilization rate; Assume 60 percent—expected seat occupancy rate; 18 divided by (20 X 0.60) yields 1.5. For the large colleges, the following formula was used: Assume 20 NASF—average station size; Assume 27 hours per week—target room utilization rate; Assume 66.7 percent—expected seat occupancy rate; and 20 divided by (27 X .667) yields 1.11. 200—Laboratory. For the smaller colleges, the guideline was computed on the basis of the following formula: Assume 50 NASF—average station size for natural and social science labs; Assume 115 NASF—average station size for technical and career labs; Assume 80 percent of lab contact hours are generated in natural and social sciences labs, and 20 percent in technical and career labs; Assume 15 hours per week—target room utilization rate; Assume 60 percent—expected seat occupancy rate; For natural and social sciences labs, 50 times 0.80 divided by (15 X 0.60) yields 4.45; For technical and career labs, 115 times 0.20 divided by (15 X 0.60) yields 2.55; and The sum of 4.45 and 2.55 is 7.0. For the larger colleges, the guideline was computed in the same manner except that the target room utilization rate was raised to 18 hours per week. 300—Office. The allowance of 166.0 NASF per individual requiring office space is adopted to cover all space required for faculty offices, administrative offices, clerical offices, student offices (1,120 square feet maximum), library offices, file rooms, mimeograph rooms, vaults, conference room, waiting rooms, interview rooms, closets, private toilets, record rooms, and office supply rooms. Centralized duplicating or print shops are not included. 320—A core space of 1,500 NASF and .05 NASF/FTDE in excess of 1,500 FTDE. 400—Study. This category includes library and learning resource centers. Seating station size is 25 NASH which, when multiplied by seating for 25 percent of the FTDE, produces a seating factor of 6.25 (25 X 0.25). The size of the stack space is determined by allowing 0.1 NASF per bound volume equivalent (BVE) with a library of 20,000 BVE recommended for the first 1,000 FTE and 1,000 BVE per 100 FTE after that, although no ceiling on volume count is mandatory. The processing and service spaces are determined as a group by taking 40 percent of the stack space. A minimum of 1,200 NASF is needed for service regardless of collection size. The total space for the library is found by adding the space computed for seating, stack, and service. 500—Special Use. 520—Physical Education. A core of 28,000 NASF (consisting of 14,000 for a gym, 8,000 for a pool, and 6,000 for a fitness center) and 10 NASF/FTDE in excess of 1,500 FTDE and 6,000 NASF of service space (consisting of 3,500 for lockers and 2,500 for storage). 530—Audiovisual, Radio, TV. A core allowance of 1,600 NASF assumes that each campus will have space for audio/TV electronic distribution equipment racks and panels (600 NASF), equipment and materials storage and circulation area (600 NASF), and a maintenance workshop and technician area (400 NASF). The additional 0.8 NASF/FTDE in excess of 1,500 recognizes that larger campuses may require more space for specialized productions. 580—Greenhouse. Assumes that greenhouses supporting the instructional program in biology require a minimum amount of space regardless of the size of the college. 600—General Use. 610—Assembly. A core of 12,000 NASF and 2 NASF/FTDE in excess of 1,500 FTDE. 620—Exhibition. A core space of 1,200 NASF is provided for the first 1,500 FTDE. Regardless of campus size, a minimum amount of space is provided for exhibition of materials, works or art, artifacts, etc. Additional space is provided for campuses larger than 1,500 FTDE in recognition of specialized program offerings and increased demand. 630—Food Facilities. This factor is based upon the potential number of users to be served, type of service to be used, number of turnovers, preparation methods, commuter implications, and storage. Space is to be provided for 50 percent of the FTDE students, FTE faculty, and FT staff. Allowance is for 15 NASF per seat for dining, 3 NASF per seat for serving, a turnover of 3:1 per meal, 70 percent of dining and serving allowance for campuses 3,000 FTDE and under, and 40 percent of dining and serving allowance for campuses 3,001 FTDE and over. 650—Lounge Facilities. This factor is based upon the potential numbers of users. Included are primary areas in any student center (game lounge, quiet lounge, study lounge as well as building lounges). 660—Merchandising. A core allowance is provided for basis space for storage display of textbooks and academic supplies and materials as well as sales space for a variety of student convenience and interest items. Space beyond 1,500 FTDE allows for increases in the size of student body growth. Storage and backspace requirements grow at a disproportionate rate because increases in the size of the college produce variety in program and instructional offerings that produce a variety in book titles required to support curricula. 680—Meeting Space. A core of 6,000 NASF for FTDE of 3,000 or less and a core of 8,000 NASF for FTDE 3,001 and above. 700—Support. 710—Data Processing. Allows for average requirements for computer centers and necessary peripherals and processing space. Excluded from this space are instructional computing spaces which are within the HEGIS 200 category. Also, central control monitoring systems are excluded. 720—745 Shops, Storage, Vehicle Storage and Repair. Assumption is that the amount of building space on campus and the number of vehicles to be stored/maintained has a direct relationship to the amount of required service space. 760—Hazardous Materials. An allowance of 2 percent of the existing inventory in room use categories 720—745 is used to determine storage space requirement. 800—Health Facilities. The factor provides a minimum space allocation as well as the opportunity for expansion at larger colleges. Space for infirmaries and health clinics only for students is included in this factor.