ABCDEFGHIJKLMNOPQRSTUVWXYZAAABACADAEAFAGAHAIAJAKALAMANAOAPAQARASATAUAVAWAXAYAZBABBBCBDBEBFBGBHBIBJBKBLBMBNBOBPBQBRBSBTBU
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Daniel
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PROJECT :
PAGE :
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T. Li
CLIENT :
DESIGN BY :
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JOB NO. :
DATE :
REVIEW BY :
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Mechanical Equipment Anchorage to Concrete Based on IBC 2000
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INPUT DATA & DESIGN SUMMARY
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KWIK BOLT-II DIAMETER
f=1/2
in. Per ICBO ER-4627
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ANCHOR DEPTH
hef=3 1/2
in. Per ICBO ER-4627
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EDGE DISTANCE
c=5in
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EQUIPMENT WEIGHT
W=14kips
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CENTER OF MASS
H=5.11
ft, 2/3 total height
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ANCHORAGE LENGTH
L=22ft
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ANCHOR # ALONG L DIR
NL=16per line
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ANCHOR SPACING
SL = L / (NL - 1) =
18in
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ANCHORAGE WIDTH
B=7.4ft
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ANCHOR # ALONG B DIR
NB=6per line
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ANCHOR SPACING
SB = B / (NB - 1) =
18in
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[THE ANCHORAGE, KWIK BOLT-II, DESIGN IS ADEQUATE.]
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ANALYSIS
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ALLOWABLE TENSION & SHEAR VALUES (ICBO ER-4627)
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Pt=1625lbs
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Vt=2085lbs
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SPACING & EDGE REQUIREMENTS (ICBO ER-4627, Table 2)
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Scr=7in
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Smin=3 1/2in
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Mcr=6 3/4in, shear,3 3/8
in, tension
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Mmin=3 3/8in, shear,2 1/4
in, tension
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DESIGN LOADS
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FH = Fp =
(KH) MAX{ 0.3SDSIpW , MIN[ 0.4apSDSIp(1+2z/h)/Rp W , 1.6SDSIpW ] }
, (IBC 1621.1.4)
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=
1.3 MAX{ 0.50W , MIN[ 1.32W , 2.64W ]}
whereSDS =1.1
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=1.72W , (SD)Ip =1.5
(IBC 1621.1.6, page 377)
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=1.23
W , (ASD) =
17.16kipsap =1
(IBC Tab 1621.3, page 381)
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Rp =1.5
(IBC Tab 1621.3 & 1621.1.7(1))
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FV = KV Fp =
22.31
kips, up & down
z =hft
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h =36ft
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KH =1.3
(IBC 1621.1.7(2), page 377)
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KV =1.3
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MAXIMUM OVERTURNING MOMENT AT ANCHOR EDGE
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MOT = Fp H =
87.63ft-kips
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MRES = (0.9W - Fv ) (0.5B) =
-35.92ft-kips<MOT
,therefore design tension anchors.
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CHECK TENSION CAPACITY
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Ps = KDSA Kseismic Kedge-space [(FV -0.9 W) / A + MOT y / I ] =
1011lbs / bolt<Pt
[SATISFACTORY]
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where
A = 2(NL + NB) -4 =
40
(total bolts)
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I = MIN(SXi2 , SYi2 ) =
66238
in2-bolts
(B direction governs)
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y = 0.5 B =
44.4in
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KDSA =0.8
(DSA adapted ICBO value)
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Kseismic =
4 / 3
(IBC 1605.3.2)
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Kedge-space = [0.8 + 0.2(c - Mmin)(Mcr - Mmin)] [0.7 + 0.3(S - Smin)(Scr - Smin)] =
1.00
(ICBO ER-4627, Tab.2 footnotes)
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CHECK SHEAR CAPACITY
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Vs = KDSA Kseismic Kedge-space FH / A =
458
lbs / bolt
<Vt
[SATISFACTORY]
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where
Kedge-space = [0.5 + 0.5(c - Mmin)(Mcr - Mmin)] [0.7 + 0.3(S - Smin)(Scr - Smin)] =
1.00
(ICBO ER-4627, Tab.2 footnotes)
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CHECK COMBINED LOADING CAPACITY (ICBO ER-4627 Sec. 2.5.2)
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(Ps / Pt)5/3 + (Vs / Vt)5/3 =
0.533<1.00
[SATISFACTORY]
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1-132-44.4174241971.361-132-44.4174241971.36
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2-114-44.413087.361971.362-132-2717424709.6896
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3-97-44.49370.241971.363-132-91742478.8544
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4-79-44.46272.641971.364-13291742478.8544
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5-62-44.43794.561971.365-1322717424709.6896
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6-44-44.419361971.366-13244174241971.36
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7-26-44.4696.961971.3670000