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This study investigated effects of fabric and foam elastic properties on the behavior of load-deformation properties of upholstered furniture cushions. A 3×3×3×2 experiment design experiment was designed to study effects of fabric cover type (less stiff, stiff, and stiffer), foam thicknesses (5 inch, 5.5 inch, and 6 inch), human weight level (105 lb., 140 lb., and 190 lb.), and seat foundation type (panel and spring) on cushion stiffness. Experimental results indicated that the increase of cushion stiffness was significant as fabric cover stiffness, foam thickness, and human weight level increased. There was no significant difference between two types of seat foundation on cushion stiffness.

"The adult evening home furnishings classes have placed the emphasis on consumer and homemaking aspects rather than on wage-earning aspects in the past in Pinellas County. This study will determine the number of students enrolled who are taking the class for occupational opportunities or advancement. The Adult Home Economics Department is continually evaluating and revising the curriculum to determine if it is meeting the needs of the students. This study is needed to determine the number of students enrolled in evening home furnishings classes in Pinellas County who plan to use the knowledge acquired in a wage-earning experience. After this determination is made the curriculum can be evaluated reflecting information gained from the data"--Introduction. / Typescript. / "August, 1975." / "Submitted to the Department of Home Economics Education in partial fulfillment of the requirements for the degree of Master of Science." / Advisor: Judy H. Dowell, Professor Directing Paper. / Includes bibliographical references (leaf 24).

This study investigated the lateral shear resistance of multi-staple joints, static and fatigue bending moment resistances of stapled gusset-plate joints, and fatigue bending performance of full size sofa structural members in three oriented strandboard (OSB) materials. It is concluded that the lateral shear resistance capacity of multi-staple joints in OSB can be predicted with power equations including single-staple lateral resistance capacity, number of staples, and material density. The bending moment resistance of stapled gusset plate joints in OSB can be predicted by mechanical models including the lateral resistance property of multi-staple joints. The static moment capacity study of a gusset-plate joint concluded that its maximum moment resistance is 2 times of its corresponding proportional limit moment resistance. Experimental results indicated that there was no significant difference in lateral shear resistance among vertically-aligned multi-staple joints constructed of three OSB materials even though there were significant differences in lateral resistance among single-staple joints in these three materials. However, there were significant differences in lateral resistances among horizontally-aligned multi-staple joints in three OSB materials. Fatigue test results concluded that the ratio of static to passed fatigue moment capacity of gusset-plate joints was 2.6. The proposed equations reasonably estimated fatigue life of less brittle OSB materials subjected to cyclic stepped and constant fatigue loads but underestimated the brittle OSB material. The ratios of material modulus of rupture to passed fatigue stress were 2.17 and 2.25 for cyclic stepped and constant cyclic tests, respectively.