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CHECK EXIST PT BEAM <br />sleeper is 8' long, assume <br />0.5' spread to ea side of <br />sleeper <br />trib. adjustment (some <br />�/ load carried by adj. beams) <br />w= (2190#/9')*((20'-3.5')/20') = 201 (D) PLF., <br />(PROPOSED PLATFORM) a! 200 (D) PLFi <br />w 20'(92PSF (D) + 25 PSF (S)) <br />" L# =F <br />Gh ICI � . 39 8 <br />Xls i LUAPs_. <br />w = 4480#/(2 BEAMS)(20)' = 112 (D) PLF <br />(OTHER CARRIER EQUIPMENT) <br />w = 9880#/12' = 823 (D) P.LF (HVAC) <br />aV'DV9 F0 I,OA J)3 <br />lU <br />% CHANGE <br />mu t <br />370.26 K-FT <br />373.68 K-FT <br />+0.9% OK <br />mu— <br />348.88 K-FT <br />365.97 K-FT <br />+4.9 % < 5% OK <br />V 11 66.81 K 67.98 K +1.8 % < 5% OK <br />CHECK EXIST CONCRETE COLUMN COLUMN IS 24" X 24" W/ (8) #8 BARS <br />PC = 4000psi <br />EXISTING COLUMN LOAD: <br />COLUMN TRIB = 625 SF; LOAD = (96DL + 25 SL) PSF = 121 PSF --> 625 SF * 121 PSF = 75.63 K <br />PENTHOUSE WEIGHT (CONSERV. APPROX. CONSTRUCTION UNKNOWN) _ (10'*10')(20 PSF) = 2K <br />BEAM SELF WEIGHT = 150 PCF * (2') * [(8/12')(25'/2) + (17/12')(37.5'/2)) = 10.47 KIPS <br />TOTAL = 88.1 K <br />ADDED LOAD: PER ENERCALC, <br />HVAC (EXIST) = 9.88K COLUMN CAN SUPPORT <br />OTHER CARRIER EQUIP = 4.48 K OVER 800K <br />NEW EQUIPMENT PLATFORM = 2.19 K COLUMN IS ADEQUATE <br />TOTAL ADDED = 16.95 K = 20% INCREASE --> CHECK COLUMN <br />CDescription By ERH Date08.10.22 <br />EXIST PT BEAM Checked Date <br />ENGINEERING <br />Scale NT$ Sheet No. <br />250 4th Ave. South <br />Suite 200 Project EVERETT CITY HALL Job No. <br />Edmonds, WA 98020 <br />425.778.8500 21015.312 <br />www.cgengineering.com <br />