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Prescriptive Compliance Method For Single RTU - 5% Increase For Gravity Demands (CBC 502.4) <br />Note: The following calculations apply to members supporting HP-1, HP-3, HP-5 <br />Member Parameters <br />L =40 ft Span of member <br />tw =8 ft Tributary width of member <br />DL =15 psf Dead load demand <br />LL =20 psf Live load demand <br />wASD =280 plf Distributed ASD demand <br />New Unit Demand <br />W p =750 lbs Weight of unit <br />L1 =72 in Length of unit (Dimension parallel to span) <br />L2 =48 in Width of unit (Dimension perpendicular to span) <br />Aunit =24 ft 2 Plan area of unit <br />qunit =11.3 psf Design area demand from unit <br />tw,unit =4 ft Tributary width of unit to member <br />wunit =45.0 plf Design distributed demand from unit <br />x1 =28 ft Span location where unit demand starts <br />x2 =34 ft Span location where unit demand ends <br />Moment Diagram <br />PROJECT <br />CLIENT <br />LOCATION <br />ITEM <br />McGuff TI <br />KPRS Inc <br />Santa Ana, CA <br />HP-1,HP-3,HP-5 <br />S24-0254 <br />SHEET # <br />ENGINEER <br />DATE <br />JOB # <br />3/12/2025 <br />C. Landis <br />0 <br />10000 <br />20000 <br />30000 <br />40000 <br />50000 <br />60000 <br />70000 <br />0. <br />0 <br />1. <br />6 <br />3. <br />1 <br />4. <br />7 <br />6. <br />3 <br />7. <br />8 <br />9. <br />4 <br />11 <br />. <br />0 <br />12 <br />. <br />5 <br />14 <br />. <br />1 <br />15 <br />. <br />7 <br />17 <br />. <br />3 <br />18 <br />. <br />8 <br />20 <br />. <br />4 <br />22 <br />. <br />0 <br />23 <br />. <br />5 <br />25 <br />. <br />1 <br />26 <br />. <br />7 <br />28 <br />. <br />2 <br />29 <br />. <br />8 <br />31 <br />. <br />4 <br />32 <br />. <br />9 <br />34 <br />. <br />5 <br />36 <br />. <br />1 <br />37 <br />. <br />6 <br />39 <br />. <br />2 <br />Mm <br />a <br />x <br /> <br />( <br />l <br />b <br />- <br />f <br />t <br />) <br />Span Location (ft) <br />Maximum Moment Demand (N) vs (E) <br />(E) Moment <br />5% Increase <br />(N) Demand <br /> BRANDOW & JOHNSTON STRUCTURAL & CIVIL ENGINEERS | LOS ANGELES NEWPORT BEACH