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SCA:T, DAZE 13LID REVISIONS SHEET OF lo
MARI.-YE CONSTRUCTION INC.
1"-'95 C?JT-OFF ROAD
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CALCULATIONS AND DES
SUBJECT: CALCULATIONS FOR A 12K/ 9K/ 6K BOA'''=T
1/4" 91 CABLE (S.S.) = 6..4 K .. .
LOAD P 12000# x 1.7 L.L.
4
P= 5.1 K
STRESS 5.1.K = 2.55K
Z* (P) LINE "
F.S = 5.4 = 2.51
2.55 ,
SHEAR: 'L/_4" PLATE
FS P = 3.1 = L.7KSI (35.0 ALLOW)
3" x 1/4" x 4 (UNITS) 3 0
TENSION 1/4" B
FR 5.1 3.2 KSI (35KSI
1. 6 x 1/4 x 4 ((:N:TS )
FT 0 WELD = 5.1 = 2.5 KSI (20KSI
4 xl/4
BEARING • 1/4" B
Fb.= 5.1 = 6.SKSI ( 56 KSI
.75 x 1/4 x 4 SIDES
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REVISIONS SBT OF
IMARINE CONSTRUCTION INC.
12.95 CUT-OFF ROAD
STU32.T, FLA.
lo-W, (dal Ko'
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ChLCULATIONS AND DESIGN DATA'
CALCULATIONS FOR A 12'K/ 9K/, 5K BOATLIFT
FRAME MATERIAL •'6061T5 ALUMINUM'STD, BEAM SECTION'4 x 338 S= 3.3"3 1
COMPUTATION CUT AWAY SECTION OF STD. SECTION
6.d ---
S= 1(433.423)
6 x 4
S= .I IN3
3.3 03 — I IN3= 2.3 IN3 r. ;
(EACH -.OF 2 HMS) '
a
, TOT . S= Z.c2.3 IN3 = 4.6 •.IN3
COMPUTATION OF MOMENT t •.
(:AREA OF SHEAR DIA.) i
rum - • ft.8 ")
(12' x 5.1) + ( 2.55 x 8) = 81.6" K
SEC _'ION REQ•D= M — 81 . 5 " k = 2.33„ 3
F 35 KSI
S PROVIDED = 4.6113) 2.3a3"3 ('OK) I_cao�
ALLCWABL•E (YEILD) STRESSES FROM T �,
ALUMI•NUM ASSOCIATION MANUAL.
S.1 Z{?s IJ3 Z S
LI5
SC.aLE % DATE
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at.(*" K
K
UVISIONS SSEET _2� OF
HARIYE CONSTRUCTION INC.
1 9 5 CUT—OFF ROAD
STUART, FLA .
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CALCULATIONS AND DESIGN
"SUBJECT: CALCULATIONS FOR 12K% 9K/ 6K BOATLIE-T
GELDS 4.043 ALLOY WIRE
fs ( ALLOW) 12 * KSI' THRU THROAT
F (ACTUAL) 5.1 K = 1.3 KSI ( 12 KSI
" 1/4 WELD X 4" x 4
BOLT DESIGN
S . S . BOLT 3/4 " .0
f�i (ALLOW) 10 KSI
fs (ACTUAL) = 5.1 = 5.8 KSI ( 17 kLLOW YIELD
.44 x 2
PULLEY
6061 T5 ALUM
CHECK BEARING BOLT'ON ALUM
fs (ALLOW) = 56 KS-L.
5.1 = 9.1 KSI ( 56
;j4" 0 x 3/4
(ASSUME PULLEY 3/4 " THICK)
scgt PTS DATE % O 3EPI3IONS SST OF lC�
` LSARI2iE CONSTRUCTION INC.
1I9 5 CUT-OFF 30AD
STUART, FLA.
J Pam.
vim 11ft3am
V 561
LIFT BEAM �.6061 T6
8n X 4It r= 3.4 S= 15.7 ].Yi3 I=66.82 in
DESIGN_ REVIEW. @ MAX' MOMENT
MOM MAX 5 -A x 5-,1
26' x I2" I = 19 KSI ( 35 FtSI
Z= m/s
16.7 IN
TENS I ON BEAM WEB 20 I{S I
ALLOW 1I� "welds
I{SI ( 20 ALLOW OK
g 5.1 itSl -
1/4 x
••^T
^'VG LLv
^ WITH BOTH
LIFT BEAMS 3n�.
�*c BOAT MUST BE RAISED "WEAK AX�S—
gO �' DUE TO TORSION OF SEAMS -
FAILURE MAY OCCUR.. OPERATE LIFT BEAMS
WARNING SHALL BE POSTED ON EQUIPMTQT AND ELECTRICAL
MECHANICAL SH�LBE SYNCHRONIZED .
AS NEAR LEVEL AS POSSIBLE-
SCaL: DgTE Ia= 1�� 3EVISIONS SST l� OF l�
FQQ,,�%
MA,SINE CONSTRUCTION INC.
�. 129 5 CUT-OFF 20AD
d STUART, FLA.
CO, C.E., R&
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