JUBILEE

! 13!!

UNIVERSITY OF SOUTHALABAMA!!

PAGE !

ENGINEER NOTEBOOK 2015 !

TAB C - Calculations

• Hull Thickness/Reinforcement Calculation

Canoe thickness/reinforcement = !"#$%&'(")"$*!!ℎ!!"#$%%!"#$%!!"#$%!!ℎ!"#$%&& !×100

! Reinforcement thickness = 0.026 in. ! # of reinforcement layers in canoe = 2 ! Thickness of canoe = 0.5 in.

∴ !ℎ!"#$%&&!"#$%&'(")"$* = !2×0.0260.5 ×100 = 10.4%

10.4% < 50%!✔

Rib thickness/reinforcement = !"#$%&'(")"$*!!ℎ!"#$%&&!"#$%!!"#$%!!ℎ!"#$%&& !×100

! Reinforcement thickness = 0.026 in. ! # of reinforcement layers in rib = 1 ! Thickness of rib = 1 in.

∴ !ℎ!"#$%&&!"#$%&'!"#"$% = !1×0.026

1 ×100 = 2.6%

2.6% < 50%!✔

JUBILEE

! 14!!

UNIVERSITY OF SOUTHALABAMA!!

PAGE !

ENGINEER NOTEBOOK 2015 !

• POA Calculation

POA = !"#$!"#$!"#$!"!#$

×100 ! Sample reinforcement size = 12 in. x 12 in. ! Aperture dimension along sample length = 0.154 in. ! Aperture dimension along sample width = 0.114 in. ! Number of apertures along sample length (n1) = 70 ! Number of apertures along sample width (n2) = 76 ! Thickness of reinforcing along sample length =0.017 ! Thickness of reinforcing along sample width = 0.043

• Spacing of reinforcing (center to center) along the sample length (d1):

!! = 0.154+ 20.0172 = 0.171!!".

• Spacing of reinforcing (center to center) along the sample width (d2):

!! = 0.114+ 20.0432 = 0.157!!".

∴ !"#$!"#$ = !!×!!×!"#$!"#$!! = 70×76×0.0175 = 93.4!!"!

!"#$!"!#$ = !"#$%ℎ!"#$%&×!"#$ℎ!"#$%& = 12×12 = 144!".!

!"# = 93.4144 ×100 = 64.8%

64.8% > 40% ✔