Laboratories, their planning and fittings . for a phy-sical laboratory may be studied. Working Benches.—Turningnow to the details of construction ofthe fittings, the size suitable forbenches, and their nature, has alreadybeen dealt with as necessary for layingout a plan. In height they are usu-ally 3 ft. for adults but may be lessfor juniors ; an inch or two, how-ever, makes a great difference, andfew will care to work standing at atable less than 2 ft. 10 ins. tops are usually of teak, but lesscostly woods such as pitchpine makevery serviceable tops and decrease theweight, an advanta
Laboratories, their planning and fittings . for a phy-sical laboratory may be studied. Working Benches.—Turningnow to the details of construction ofthe fittings, the size suitable forbenches, and their nature, has alreadybeen dealt with as necessary for layingout a plan. In height they are usu-ally 3 ft. for adults but may be lessfor juniors ; an inch or two, how-ever, makes a great difference, andfew will care to work standing at atable less than 2 ft. 10 ins. tops are usually of teak, but lesscostly woods such as pitchpine makevery serviceable tops and decrease theweight, an advantage if the tables areto be much moved. Seniors areseldom, and juniors hardly ever,given lockers and individual appara-tus as for chemistry. It is thereforebest not to fill in the space below thetables with cupboards for storage,unless the laboratory accommodationmakes this imperative, in which casethe doors to such cupboards shouldbe placed on the side or end not oc-cupied by the students, to admit ofready access while a class is at 30 PT rTTTT •SCALE-OF-PLAN • Fig. 49. — Physical Laboratory Plan, SchoolHouse Department, Boston. Sometimes a drawer alone is arranged below the top for each student, but very little use is generally made of it, and a good nest of drawers in one or more places in fixed fittings is often preferable. The writers view is that as many of the working tables as 6 82 LABORATORIES possible should be movable. They should have ij in. teak or pitchpine orIJ in. yellow deal tops, legs 3 J ins. square, which may be tapered at thebottom and should not be much more than 4 ft. apart ; the framing shouldbe strong, and if held by dragon pieces at the corners (Fig. 50) the tableswill not be racked when moved, which is often otherwise the case. If likely to be submitted to unauthorised movement the legs may be•screwed to the floor (if of wood) by buttons. A bottom rail and crossibraces are further necessary in tables of large size which are not fixtures
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Keywords: ., bookcentury1900, bookdecade1920, bookpublisherlondo, bookyear1921
