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HomeMy WebLinkAboutCALCS - 19-00043 - 575 W 7th S - Madison Middle School - RemodelFROST Structural Engineering 1020 Lincoln Road Phone: 208.227.8404 Idaho Falls, ID 83401 Fax: 208.227.8405 www.frost-structural.com Project: Madison Middle School Cooling Tower Client: JRW & Associates Project No.: IF19-004 Date: Engineer : SEAL: FSE January 18, 2019 STRUCTURAL CALCULATIONS BSK 01/18/2019 Design Code: 2015 International Building Code Risk Category =III [see ASCE 7 Table 1.5-1] Floor Loads: built-up roofing w/o gravel 2.5 20ga. X 1.5" HSB-36 steel deck 2.3 rigid insulation 1.2 perimeter beams 1.5 mechanical/miscellaneous 22.5 DL =30.0 psf LL joist LL beam TL Roof Snow Load, SL =35 psf L/360 L/360 L/240 LL (2nd floor corridors) =80 psf L/360 L/360 L/240 Design Gravity Loads deflection limits 1 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower Design Code: 2015 International Building Code Risk Category =III [see ASCE 7 Table 1.5-1] Seismic Loads: Equivalent Lateral Force Procedure III D Mapped Spectral Response Accelerations: S1 .................0.156 g SS .................0.440 g Design Spectral Response Accelerations: SD1 .................0.226 g SDS .................0.425 g D Seismic Force-Resisting System(s): ................. R .................3 Ωo .................3 Cd .................3 Cs .................0.177 32.9 kips Wind Loads: 120 MPH C Enclosed 0.18 Component & Cladding Pressures: Roof (uplift-zone 1).................29.1 psf Roof (net uplift-zone 1).................12.1 psf Roof (uplift-zone 2).................36.4 psf Roof (net uplift-zone 2).................19.4 psf Walls (zone 4).................30.3 psf Walls (zone 5).................36.6 psf Seismic Design Category ....................................... Seismic Weight, W ................................................ Lateral System Design Lateral Loads Analysis Procedure: ............................................... Importance Factor .................................................. Site Class ............................................................... steel systems not specifically detailed for seismic resistance excluding cantilever columns Design Wind Speed (ultimate) ............................... Wind Exposure ...................................................... Enclosure Classification ......................................... Internal Pressure Coefficient ................................. 2 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower Design Code: 2015 International Building Code Risk Category =III [see ASCE 7 Table 1.5-1] Foundation Design: Conventional Spread Footings Presumptive Load-Bearing Values (Table 1806.2) 1500 psf 100 pcf 0.25 Lateral Soil Load (Table 1610.1) 45 pcf 60 pcf 36 inches Foundation Design Frost Depth............ Allowable Bearing Pressure............ Passive Pressure............ Foundation Type ............................................. Design Basis: Source .......................................................... Active Pressure............ At-Rest Pressure............ Source .......................................................... Sliding Coefficient............ 3 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 4 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 5 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower Key Plan Area =1 Risk Category =III Seismic Design Category =C [per ASCE 7-10 tables 11.6-1 and 11.6-2] Importance Factor IE =1.25 Site Class =D Seismic Force Resisting System (Table 12.2-1) = Response Modification Coefficient, R =3 Overstrength factor, Ωο =3 Deflection Amplification Factor, Cd =3 Design Spectral Response Accelerations: Ss =44.0%S1 =15.6%[per USGS Earthquake Ground Motion Tool] Fa = 1.45 Fv = 2.18 [per ASCE 7-10 table 11.4-1 & 11.4-2] SMS =0.637g SM1 =0.339g [ASCE 7-10 equation 11.4-1 & 11.4-2] SDS = 0.425g SD1 =0.226g [ASCE 7-10 equation 11.4-3 & 11.4-4] TL =6 CS =0.177 T = 0.121 T0 =0.107 Ct =0.020 Cs-max =0.781 Ta =0.121 TS =0.533 x =0.750 Cs-min =0.023 Tmax =0.169 Sa =0.425 CS (controls)=0.177 CU =1.4 k = 1.00 Main Seismic Force Resisting System: V = CsW =5.8 [per ASCE 7-10 equation 12.8-1] Vertical Distribution of Main Seismic Force Resisting System [per ASCE 7-10 section 12.8.3] Level hx (ft) wx (kip)wx hx k (kip-ft)Cvx Fx (kip) Vx (kip) Roof 11 32.9 362 1.000 5.8 5.8 Totals: 33 362 1.0 5.8 Transverse Diaphragm Design Forces [per ASCE 7-10 section 12.10.1.1] Level hx (ft) wpx (kip) ∑wi (kip) ∑Fi (kip) Fpx (min) (kip) Fpx (max) (kip) Fpx (kip) Roof 11 32.9 32.9 5.8 3.5 7.0 5.8 Longitudinal Diaphragm Design Forces [per ASCE 7-10 section 12.10.1.1] Level hx (ft) wpx (kip) ∑wi (kip) ∑Fi (kip) Fpx (min) (kip) Fpx (max) (kip) Fpx (kip) Roof 11 32.9 32.9 5.8 3.5 7.0 5.8 Design Seismic Lateral Loads Equivalent Lateral Force Procedure per Chapters 11 and 12 of ASCE 7-10 [see ASCE 7-10 table 1.5-2] [ASCE 7-10 table 1.5-1] STEEL SYSTEMS NOT SPECIFICALLY DETAILED FOR SEISMIC RESISTANCE, EXCLUDING CANTILEVERED COLUMN SYSTEMS 6 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower Level =Roof Area =1 Total Seismic Weight = 32.9 Long. Wall Length (ft) =0 0 Area (ft^2) =1 528 Trans. Wall Length (ft) =0 0 Dead Load (psf) =13373.2 30 Plate Height (ft) =0 0 Live / Snow Load (psf) =0 35 Parapet Height (ft) =0 0 % Live / Snow Load =0% 20% Wall Weight (psf) =0 0 Int. Partition Load (psf) =0 0 Misc. (lbs) =0 0 Misc. (lbs) =0 0 Long. Weight (k) = 0.0 0.0 Weight (k) = 13.4 19.5 Trans. Weight (k) = 0.0 0.0 Transverse Weight (k) =32.9 Longitudinal Weight (k) =32.9 Seismic Weights Walls Roof / Floor 7 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower www.struware.com Code Search Code:ASCE 7 - 10 Occupancy: Occupancy Group =E Educational Risk Category & Importance Factors: Risk Category = II Wind factor = 1.00 Snow factor = 1.00 Seismic factor = 1.00 Type of Construction: Fire Rating: Roof = 0.0 hr Floor = 0.0 hr Building Geometry: Roof angle (θ) 0.00 / 12 0.0 deg Building length (L) 28.0 ft Least width (B) 14.0 ft Mean Roof Ht (h) 14.0 ft Parapet ht above grd 0.0 ft Minimum parapet ht 0.0 ft Live Loads: Roof 0 to 200 sf: 20 psf 200 to 600 sf: 24 - 0.02Area, but not less than 12 psf over 600 sf: 12 psf Floor: Typical Floor 50 psf Partitions 15 psf 8 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower Wind Loads :ASCE 7- 10 Ultimate Wind Speed 120 mph Nominal Wind Speed 93 mph Risk Category II Exposure Category C Enclosure Classif.Enclosed Building Internal pressure +/-0.18 Directionality (Kd) 0.85 Kh case 1 0.849 Kh case 2 0.849 Type of roof Monoslope Topographic Factor (Kzt) Topography Flat Hill Height (H) 0.0 ft H< 15ft;exp C Half Hill Length (Lh) 0.0 ft \Kzt=1.0 Actual H/Lh = 0.00 Use H/Lh = 0.00 Modified Lh = 0.0 ft From top of crest: x = 0.0 ft Bldg up/down wind? downwind H/Lh= 0.00 K1 =0.000 x/Lh = 0.00 K2 =0.000 z/Lh = 0.00 K3 =1.000 At Mean Roof Ht: Kzt = (1+K1K2K3)^2 =1.00 Gust Effect Factor Flexible structure if natural frequency < 1 Hz (T > 1 second). h = 14.0 ft However, if building h/B < 4 then probably rigid structure (rule of thumb). B = 14.0 ft h/B = 1.00 Rigid structure /z (0.6h) =15.0 ft G =0.85 Using rigid structure default Rigid Structure Flexible or Dynamically Sensitive Structure ē =0.20 Natural Frequency (η1) =0.0 Hz ℓ = 500 ft Damping ratio (β) = 0 zmin =15 ft /b =0.65 c = 0.20 /α = 0.15 gQ, gv =3.4 Vz =101.3 Lz =427.1 ft N1 =0.00 Q =0.95 Rn =0.000 Iz =0.23 Rh =28.282 η =0.000 h =14.0 ft G =0.90 use G = 0.85 RB =28.282 η =0.000 RL =28.282 η =0.000 gR =0.000 R = 0.000 G = 0.000 9 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower Wind Loads - MWFRS h£60' (Low-rise Buildings) Enclosed/partially enclosed only Kz = Kh (case 1) =0.85 Edge Strip (a) =3.0 ft Base pressure (qh) =26.6 psf End Zone (2a) =6.0 ft GCpi = +/-0.18 Zone 2 length =7.0 ft Wind Pressure Coefficients CASE A CASE B Surface GCpf w/-GCpi w/+GCpi GCpf w/-GCpi w/+GCpi 1 0.40 0.58 0.22 -0.45 -0.27 -0.63 2 -0.69 -0.51 -0.87 -0.69 -0.51 -0.87 3 -0.37 -0.19 -0.55 -0.37 -0.19 -0.55 4 -0.29 -0.11 -0.47 -0.45 -0.27 -0.63 5 0.40 0.58 0.22 6 -0.29 -0.11 -0.47 1E 0.61 0.79 0.43 -0.48 -0.30 -0.66 2E -1.07 -0.89 -1.25 -1.07 -0.89 -1.25 3E -0.53 -0.35 -0.71 -0.53 -0.35 -0.71 4E -0.43 -0.25 -0.61 -0.48 -0.30 -0.66 5E 0.61 0.79 0.43 6E -0.43 -0.25 -0.61 Ultimate Wind Surface Pressures (psf) 1 15.4 5.9 -7.2 -16.8 2 -13.6 -23.1 -13.6 -23.1 3 -5.1 -14.6 -5.1 -14.6 4 -2.9 -12.5 -7.2 -16.8 5 15.4 5.9 6 -2.9 -12.5 1E 21.0 11.4 -8.0 -17.6 2E -23.7 -33.2 -23.7 -33.2 3E -9.3 -18.9 -9.3 -18.9 4E -6.6 -16.2 -8.0 -17.6 5E 21.0 11.4 6E -6.6 -16.2 Parapet Windward parapet = 0.0 psf (GCpn = +1.5)Windward roof Leeward parapet = 0.0 psf (GCpn = -1.0)overhangs =18.6 psf (upward) add to windward roof pressure Horizontal MWFRS Simple Diaphragm Pressures (psf) Transverse direction (normal to L) Interior Zone: Wall 18.4 psf Roof -8.5 psf ** End Zone: Wall 27.7 psf Roof -14.4 psf ** Longitudinal direction (parallel to L) Interior Zone: Wall 18.4 psf End Zone: Wall 27.7 psf ** NOTE: Total horiz force shall not be less than that determined by neglecting roof forces (except for MWFRS moment frames). The code requires the MWFRS be designed for a min ultimate force of 16 psf multiplied by the wall area plus an 8 psf force applied to the vertical projection of the roof. θ = 0 deg 10 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower Location of MWFRS Wind Pressure Zones NOTE: Torsional loads are 25% of zones 1 - 6. See code for loading diagram. ASCE 7 -99 and ASCE 7-10 (& later) NOTE: Torsional loads are 25% of zones 1 - 4. See code for loading diagram. ASCE 7 -02 and ASCE 7-05 11 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower Ultimate Wind Pressures Location of C&C Wind Pressure Zones Roofs w/ θ ≤ 10° Walls h ≤ 60' Gable, Sawtooth and and all walls & alt design h<90'Multispan Gable θ ≤ 7 degrees & Monoslope roofs h > 60'Monoslope ≤ 3 degrees 3° < θ ≤ 10° h ≤ 60' & alt design h<90' h ≤ 60' & alt design h<90' Monoslope roofs Multispan Gable & Hip 7° < θ ≤ 27° 10° < θ ≤ 30° Gable 7° < θ ≤ 45° h ≤ 60' & alt design h<90' Sawtooth 10° < θ ≤ 45° h ≤ 60' & alt design h<90' Stepped roofs θ ≤ 3° h ≤ 60' & alt design h<90'12 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower Ultimate Wind Pressures Wind Loads - Components & Cladding : h <= 60' Kh (case 1) = 0.85 h = 14.0 ft Base pressure (qh) =26.6 psf a = 3.0 ft Minimum parapet ht = 0.0 ft GCpi = +/-0.18 Roof Angle (θ) = 0.0 deg Type of roof = Monoslope Roof GCp +/- GCpi Surface Pressure (psf)User input Area 10 sf 50 sf 100 sf 10 sf 50 sf 100 sf 75 sf 500 sf Negative Zone 1 -1.18 -1.11 -1.08 -31.4 -29.5 -28.7 -29.1 -28.7 Negative Zone 2 -1.98 -1.49 -1.28 -52.7 -39.7 -34.0 -36.4 -34.0 Negative Zone 3 -2.98 -1.79 -1.28 -79.3 -47.7 -34.0 -39.7 -34.0 Positive All Zones 0.48 0.41 0.38 16.0 16.0 16.0 16.0 16.0 Overhang Zone 1&2 -1.70 -1.63 -1.60 -45.2 -43.4 -42.6 -42.9 -29.3 Overhang Zone 3 -2.80 -1.40 -0.80 -74.5 -37.3 -21.3 -27.9 -21.3 Overhang pressures in the table above assume an internal pressure coefficient (Gcpi) of 0.0 Overhang soffit pressure equals adj wall pressure (which includes internal pressure of 4.8 psf) Parapet qp = 0.0 psf Surface Pressure (psf)User input Solid Parapet Pressure 10 sf 100 sf 500 sf 20 sf CASE A = pressure towards building (pos) CASE A : Interior zone: 0.0 0.0 0.0 0.0 CASE B = pressure away from bldg (neg) Corner zone: 0.0 0.0 0.0 0.0 CASE B : Interior zone: 0.0 0.0 0.0 0.0 Corner zone: 0.0 0.0 0.0 0.0 Walls GCp +/- GCpi Surface Pressure (psf)User input Area 10 sf 100 sf 500 sf 10 sf 100 sf 500 sf 16 sf 200 sf Negative Zone 4 -1.17 -1.01 -0.90 -31.1 -26.9 -23.9 -30.3 -25.6 Negative Zone 5 -1.44 -1.12 -0.90 -38.3 -29.8 -23.9 -36.6 -27.3 Positive Zone 4 & 5 1.08 0.92 0.81 28.7 24.5 21.5 27.9 23.2 Note: GCp reduced by 10% due to roof angle <= 10 deg. 13 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower Key Plan Area =1 Risk Category =III Wind Speed =120 Exposure =C Importance Factor Iw =1.00 Bldg/Area Length, L (ft)=28 Bldg/Area Width, W (ft)=8 Edge Strip (a) (ft)=3 End Zone (2a) (ft)= 6 Transverse Direction (normal to L): Roof Type (receiving wind) =Flat Use Only End Zone Pressures =N Interior Pressure (psf) =18.4 Roof Interior Pressure (psf) =8.5 End Zone Pressure (psf) =27.7 Roof End Zone Pressure (psf) =14.4 Windward Parapet Pressure (psf) =0.0 Leeward Parapet Pressure (psf) =0.0 Overall Structure Height,Hx (ft) =14.0 OK Vertical Distribution of Main Wind Force Resisting System Level hi (ft)di (ft)wx-interior (plf)wx-end zone (plf)wx-min (plf)wx-avg (plf)Fx (kip) Roof 10 0.5 101 152 144 144 4.0 Total: 144 4.0 Longitudinal Direction (parallel to L): Roof Type (receiving wind) =Flat Use Only End Zone Pressures =N Interior Pressure (psf) =18.4 Roof Interior Pressure (psf) =8.5 End Zone Pressure (psf) =27.7 Roof End Zone Pressure (psf) =14.4 Windward Parapet Pressure (psf) =0.0 Leeward Parapet Pressure (psf) =0.0 Overall Structure Height,Hx (ft) =14.0 OK Vertical Distribution of Main Wind Force Resisting System Level hi (ft)di (ft)wx-interior (plf)wx-end zone (plf)wx-min (plf)wx-avg (plf)Fx (kip) Roof 10 0.5 101 152 144 144 1.2 Total: 144 1.2 Wind Lateral Load Vertical Distribution for MWFRS <=60' [ASCE 7-10 table 1.5-1] [see ASCE 7-10 table 1.5-2] [see ASCE 7-10 Hazard Maps, figures 26.5-1] [see ASCE 7-10 section 26.7.3] 14 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower Member Labels 15 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower Nodes 16 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower Section sets 17 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower Unity 18 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower Dead Load 19 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower Live Load 20 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower Seismic X 21 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower Seismic Z 22 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 23 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 24 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 25 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 26 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 27 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 28 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 29 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 30 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 31 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 32 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 33 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 34 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 35 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 36 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 37 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 38 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 39 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 40 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 41 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 42 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 43 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 44 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 45 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 46 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 47 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 48 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 49 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 50 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 51 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 52 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 53 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 54 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 55 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 56 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 57 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower 58 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower Concrete Pad Footing Strength Design per ACI 318-11 Mark: Material Data P Self (k) =M DL (k-ft) =0.00 Allowable q (psf) =2000 P DL (k) =7.19 M LL (k-ft) =0.00 f'c (psi) =2500 B 1 =0.85 P LL (k) =3.08 Accidental Eccentricity =N Bars #3 and smaller, Fy (ksi) = 40 Pu (k) = 13.6 Mu (k-ft) = 0.00 Bars #4 and bigger, Fy (ksi) = 60 e (ft) = 0.00 within middle 3rd Footing Dimensions: Column/Pier Base: Shear Check: Long (ft) =2.3 Long Direction (in) =12 Punching Vc (psi) = 170 Short (ft) =2.3 Short Direction (in)=12 Wide Bm Vc (psi) = 85 Thickness (in) =30 Wide Bm Shear Cap. (lb/in) > Shear Force (lb/in) % in center band B=100%2274 >-337 OK Punching Shear Resistance (k) > Applied Force (k) Bearing Pressures:705 >-13 OK q min (psf) =1940 q max (psf) =1940 OK qu-max (psf) =2561 qu at edge of base (psf) =2561 qu-min (psf) =2561 qu at edge of base (psf) =2561 Reinforcing: Reinforcement Top and Bottom(Y/N) =Y Base As(min) on calc'd As(4/3) (Y/N) =Y Check Development Length L' long (ft) = 0.65 Bar size =#4 p =0.0000 Fy (psi) = 60000 Mu (k-ft) = 0.54 area of bar = 0.20 Min p =0.0000 Ld1 (in) =24.0 d (in)= 26.75 bar diameter = 0.5 Max p =0.0134 Ld2 (in) =12 As req(in^2/ft)= 0.00 Spacing (in) = 801 Use p =0.0000 Ld3 (in) =12 Total Bars = 1 Less than pmax, OK Available Ld (in) = 43.6 OK Check Development Length L' short (ft) = 0.65 Bar size =#4 p =0.0000 Fy (psi) = 60000 Mu (k-ft) = 0.27 area of bar = 0.20 Min p =0.0000 Ld1 (in) =24.0 d (in)= 26.25 bar diameter = 0.5 Max p =0.0134 Ld2 (in) =12 As req(in^2/ft)= 0.00 Spacing (in) = 1602 Use p =0.0000 Ld3 (in) =12 Total Bars = 1 Less than pmax, OK Available Ld (in) = 43.1 OK 30" DIA Ftg Use: w/ 1 #4 Top and Bottom 30" DIA Ftg Loads: (U = 1.2DL + 1.6LL) Long Direction Check p Short Direction Check p 2.3 feet long x 2.3 feet wide x 30'' thick Footing Each Way 59 of 59 FROST Structural Engineering Project Name:Project No. : Eng. : Date : Sheet : BSK FSE01/18/19IF19-004Madison Middle School Cooling Tower