View of the Tensegrity Arch
Schematic for the Tensegrity Arch
structure: arch/x3l8arch2.rc variable: arch/x3l8arch2.dat digit list: src/standard.dls |
Member Descriptions
[name, end point names, weight (if in objective function),
second power of length (if a constraint), member category,
Obj/Con/Exc (put in objective function, use as a constraint or
exclude from computations), flags]
For assembly purposes, only the name and end point names are
of interest. The other information may be of interest after
A Practical Guide to Tensegrity Design has been consulted.
<Member> strut0103a pt01A pt03c 0.0 sqr(2.5) 1 Con CalcClear Inelastic *
<Member> strut0204a pt02A pt04a 0.0 sqr(2.5) 1 Con CalcClear Inelastic *
<Member> strut0305a pt03A pt05c 0.0 sqr(2.5) 1 Con CalcClear Inelastic *
<Member> strut0406a pt04A pt06a 0.0 sqr(2.5) 1 Con CalcClear Inelastic *
<Member> strut0507a pt05A pt07c 0.0 sqr(2.5) 1 Con CalcClear Inelastic *
<Member> strut0608a pt06A pt08a 0.0 sqr(2.5) 1 Con CalcClear Inelastic *
<Member> strut0709a pt07A pt09c 0.0 sqr(2.5) 1 Con CalcClear Inelastic *
<Member> strut0810a pt08A pt10a 0.0 sqr(2.5) 1 Con CalcClear Inelastic *
<Member> baseta pt01A pt01B 0.0 sqr(1.5) 10 Con *
<Member> apexta pt10a pt10b 0.0 sqr(1.5) 10 Con *
<Member> guy0a pt01A pt02A 0.32*1.4622 0.0 7 Obj *
<Member> guy1a pt01A pt03b 0.32*1.4622 0.0 7 Obj *
<Member> guy2a pt02A pt04b 0.54*1.4622 0.0 7 Obj *
<Member> guy3a pt03A pt05b 0.54 0.0 3 Obj *
<Member> guy4a pt04A pt06b 0.54/1.4622 0.0 7 Obj *
<Member> guy5a pt05A pt07b 0.54/1.4622 0.0 7 Obj *
<Member> guy6a pt06A pt08b 0.54 0.0 3 Obj *
<Member> guy7a pt07A pt09b 0.54*1.65 0.0 7 Obj *
<Member> guy8a pt08A pt10b 0.32*1.65 + 0.32 0.0 7 Obj *
<Member> guy9a pt09a pt10b 0.32 0.0 3 Obj *
<Member> TL0102a pt01A pt02B 0.55 0.0 4 Obj *
<Member> TS0203a pt02A pt03b 1.59 + 0.03 0.0 2 Obj *
<Member> TL0203a pt02A pt03A 0.55 0.0 4 Exc *
<Member> tS0203a pt02A pt03a 1.59 + 0.03 0.0 2 Obj *
<Member> TS0304a pt03A pt04a 1.59 0.0 2 Obj *
<Member> tT0303a pt03A pt03a 0.60 0.0 2 Obj *
<Member> TL0304a pt03A pt04B 0.55 0.0 4 Exc *
<Member> tS0304a pt03A pt04b 1.59 0.0 2 Obj *
<Member> tL0304a pt03a pt04a 0.55 0.0 4 Exc *
<Member> TS0405a pt04A pt05a 1.59 0.0 2 Obj *
<Member> tT0404a pt04A pt04a 0.60/1.4622 0.0 7 Obj *
<Member> TL0405a pt04A pt05A 0.55 0.0 4 Exc *
<Member> tS0405a pt04A pt05b 1.59 0.0 2 Obj *
<Member> tL0405a pt04a pt05b 0.55 0.0 4 Exc *
<Member> TS0506a pt05A pt06a 1.59 0.0 2 Obj *
<Member> tT0505a pt05A pt05a 0.60/1.4622 0.0 7 Obj *
<Member> TL0506a pt05A pt06B 0.55 0.0 4 Exc *
<Member> tS0506a pt05A pt06b 1.59 0.0 2 Obj *
<Member> tL0506a pt05a pt06a 0.55 0.0 4 Exc *
<Member> TS0607a pt06A pt07a 1.59 0.0 2 Obj *
<Member> tT0606a pt06A pt06a 0.60 0.0 2 Obj *
<Member> TL0607a pt06A pt07A 0.55 0.0 4 Exc *
<Member> tS0607a pt06A pt07b 1.59 0.0 2 Obj *
<Member> tL0607a pt06a pt07b 0.55 0.0 4 Exc *
<Member> TS0708a pt07A pt08a 1.59 0.0 2 Obj *
<Member> tT0707a pt07A pt07a 0.60*1.4622 0.0 7 Obj *
<Member> TL0708a pt07A pt08B 0.55 0.0 4 Exc *
<Member> tS0708a pt07A pt08b 1.59 0.0 2 Obj *
<Member> tL0708a pt07a pt08a 0.55 0.0 4 Exc *
<Member> TS0809a pt08A pt09b 1.59 0.0 2 Obj *
<Member> tT0808a pt08A pt08a 0.60*1.65 0.0 7 Obj *
<Member> tS0809a pt08A pt09a 1.59 0.0 2 Obj *
<Member> tL0809a pt08c pt09a 0.55 0.0 4 Exc *
<Member> tL0910a pt09a pt10a 0.55 0.0 4 Obj *
<Member> strut0103b pt01B pt03a 0.0 sqr(2.5) 1 Con CalcClear Inelastic *
<Member> strut0204b pt02B pt04b 0.0 sqr(2.5) 1 Con CalcClear Inelastic *
<Member> strut0305b pt03B pt05a 0.0 sqr(2.5) 1 Con CalcClear Inelastic *
<Member> strut0406b pt04B pt06b 0.0 sqr(2.5) 1 Con CalcClear Inelastic *
<Member> strut0507b pt05B pt07a 0.0 sqr(2.5) 1 Con CalcClear Inelastic *
<Member> strut0608b pt06B pt08b 0.0 sqr(2.5) 1 Con CalcClear Inelastic *
<Member> strut0709b pt07B pt09a 0.0 sqr(2.5) 1 Con CalcClear Inelastic *
<Member> strut0810b pt08B pt10b 0.0 sqr(2.5) 1 Con CalcClear Inelastic *
<Member> basetb pt01B pt01C 0.0 sqr(1.5) 10 Con *
<Member> apextb pt10b pt10c 0.0 sqr(1.5) 10 Con *
<Member> guy0b pt01B pt02B 0.32 0.0 3 Obj *
<Member> guy1b pt01B pt03c 0.32/1.65 - 0.06 0.0 7 Obj *
<Member> guy2b pt02B pt04c 0.54 0.0 3 Obj *
<Member> guy3b pt03B pt05c 0.54*1.4622 0.0 7 Obj *
<Member> guy4b pt04B pt06c 0.54*1.4622 0.0 7 Obj *
<Member> guy5b pt05B pt07c 0.54 0.0 3 Obj *
<Member> guy6b pt06B pt08c 0.54/1.4622 0.0 7 Obj *
<Member> guy7b pt07B pt09c 0.54/1.65 0.0 7 Obj *
<Member> guy8b pt08B pt10c 0.32 0.0 3 Obj *
<Member> guy9b pt09b pt10c 0.32*1.65 - 0.245 0.0 7 Obj *
<Member> TL0102b pt01B pt02C 0.55 0.0 4 Obj *
<Member> TS0203b pt02B pt03c 1.59 + 0.03 0.0 2 Obj *
<Member> TL0203b pt02B pt03B 0.55 0.0 4 Exc *
<Member> tS0203b pt02B pt03b 1.59 + 0.03 0.0 2 Obj *
<Member> TS0304b pt03B pt04b 1.59 0.0 2 Obj *
<Member> tT0303b pt03B pt03b 0.60*1.4622 0.0 7 Obj *
<Member> TL0304b pt03B pt04C 0.55 0.0 4 Exc *
<Member> tS0304b pt03B pt04c 1.59 0.0 2 Obj *
<Member> tL0304b pt03b pt04b 0.55 0.0 4 Exc *
<Member> TS0405b pt04B pt05b 1.59 0.0 2 Obj *
<Member> tT0404b pt04B pt04b 0.60*1.4622 0.0 7 Obj *
<Member> TL0405b pt04B pt05B 0.55 0.0 4 Exc *
<Member> tS0405b pt04B pt05c 1.59 0.0 2 Obj *
<Member> tL0405b pt04b pt05c 0.55 0.0 4 Exc *
<Member> TS0506b pt05B pt06b 1.59 0.0 2 Obj *
<Member> tT0505b pt05B pt05b 0.60 0.0 2 Obj *
<Member> TL0506b pt05B pt06C 0.55 0.0 4 Exc *
<Member> tS0506b pt05B pt06c 1.59 0.0 2 Obj *
<Member> tL0506b pt05b pt06b 0.55 0.0 4 Exc *
<Member> TS0607b pt06B pt07b 1.59 0.0 2 Obj *
<Member> tT0606b pt06B pt06b 0.60/1.4622 0.0 7 Obj *
<Member> TL0607b pt06B pt07B 0.55 0.0 4 Exc *
<Member> tS0607b pt06B pt07c 1.59 0.0 2 Obj *
<Member> tL0607b pt06b pt07c 0.55 0.0 4 Exc *
<Member> TS0708b pt07B pt08b 1.59 0.0 2 Obj *
<Member> tT0707b pt07B pt07b 0.60/1.4622 0.0 7 Obj *
<Member> TL0708b pt07B pt08C 0.55 0.0 4 Exc *
<Member> tS0708b pt07B pt08c 1.59 0.0 2 Obj *
<Member> tL0708b pt07b pt08b 0.55 0.0 4 Exc *
<Member> TS0809b pt08B pt09c 1.59 0.0 2 Obj *
<Member> tT0808b pt08B pt08b 0.60 0.0 2 Obj *
<Member> tS0809b pt08B pt09b 1.59 0.0 2 Obj *
<Member> tL0809b pt08a pt09b 0.55 0.0 4 Exc *
<Member> tL0910b pt09b pt10b 0.55*1.4622 + 0.32 0.0 7 Obj *
<Member> strut0103c pt01C pt03b 0.0 sqr(2.5) 1 Con CalcClear Inelastic *
<Member> strut0204c pt02C pt04c 0.0 sqr(2.5) 1 Con CalcClear Inelastic *
<Member> strut0305c pt03C pt05b 0.0 sqr(2.5) 1 Con CalcClear Inelastic *
<Member> strut0406c pt04C pt06c 0.0 sqr(2.5) 1 Con CalcClear Inelastic *
<Member> strut0507c pt05C pt07b 0.0 sqr(2.5) 1 Con CalcClear Inelastic *
<Member> strut0608c pt06C pt08c 0.0 sqr(2.5) 1 Con CalcClear Inelastic *
<Member> strut0709c pt07C pt09b 0.0 sqr(2.5) 1 Con CalcClear Inelastic *
<Member> strut0810c pt08C pt10c 0.0 sqr(2.5) 1 Con CalcClear Inelastic *
<Member> basetc pt01C pt01A 0.0 sqr(1.5) 10 Con *
<Member> apextc pt10c pt10a 0.0 sqr(1.5) 10 Con *
<Member> guy0c pt01C pt02C 0.32 0.0 3 Obj *
<Member> guy1c pt01C pt03a 0.32 0.0 3 Obj *
<Member> guy2c pt02C pt04a 0.54/1.4622 0.0 7 Obj *
<Member> guy3c pt03C pt05a 0.54/1.4622 0.0 7 Obj *
<Member> guy4c pt04C pt06a 0.54 0.0 3 Obj *
<Member> guy5c pt05C pt07a 0.54*1.4622 0.0 7 Obj *
<Member> guy6c pt06C pt08a 0.54*1.4622 0.0 7 Obj *
<Member> guy7c pt07C pt09a 0.54 0.0 3 Obj *
<Member> guy8c pt08C pt10a 0.32 0.0 3 Obj *
<Member> guy9c pt09c pt10a 0.32 0.0 3 Obj *
<Member> TL0102c pt01C pt02A 0.55 0.0 4 Obj *
<Member> TS0203c pt02C pt03a 1.59 + 0.03 0.0 2 Obj *
<Member> TL0203c pt02C pt03C 0.55 0.0 4 Exc *
<Member> tS0203c pt02C pt03c 1.59 + 0.03 0.0 2 Obj *
<Member> TS0304c pt03C pt04c 1.59 0.0 2 Obj *
<Member> tT0303c pt03C pt03c 0.60/1.4622 0.0 7 Obj *
<Member> TL0304c pt03C pt04A 0.55 0.0 4 Exc *
<Member> tS0304c pt03C pt04a 1.59 0.0 2 Obj *
<Member> tL0304c pt03c pt04c 0.55 0.0 4 Exc *
<Member> TS0405c pt04C pt05c 1.59 0.0 2 Obj *
<Member> tT0404c pt04C pt04c 0.60 0.0 2 Obj *
<Member> TL0405c pt04C pt05C 0.55 0.0 4 Exc *
<Member> tS0405c pt04C pt05a 1.59 0.0 2 Obj *
<Member> tL0405c pt04c pt05a 0.55 0.0 4 Exc *
<Member> TS0506c pt05C pt06c 1.59 0.0 2 Obj *
<Member> tT0505c pt05C pt05c 0.60*1.4622 0.0 7 Obj *
<Member> TL0506c pt05C pt06A 0.55 0.0 4 Exc *
<Member> tS0506c pt05C pt06a 1.59 0.0 2 Obj *
<Member> tL0506c pt05c pt06c 0.55 0.0 4 Exc *
<Member> TS0607c pt06C pt07c 1.59 0.0 2 Obj *
<Member> tT0606c pt06C pt06c 0.60*1.4622 0.0 7 Obj *
<Member> TL0607c pt06C pt07C 0.55 0.0 4 Exc *
<Member> tS0607c pt06C pt07a 1.59 0.0 2 Obj *
<Member> tL0607c pt06c pt07a 0.55 0.0 4 Exc *
<Member> TS0708c pt07C pt08c 1.59 0.0 2 Obj *
<Member> tT0707c pt07C pt07c 0.60 0.0 2 Obj *
<Member> TL0708c pt07C pt08A 0.55 0.0 4 Exc *
<Member> tS0708c pt07C pt08a 1.59 0.0 2 Obj *
<Member> tL0708c pt07c pt08c 0.55 0.0 4 Exc *
<Member> TS0809c pt08C pt09a 1.59 0.0 2 Obj *
<Member> tT0808c pt08C pt08c 0.60/1.65 0.0 7 Obj *
<Member> tS0809c pt08C pt09c 1.59 0.0 2 Obj *
<Member> tL0809c pt08b pt09c 0.55 0.0 4 Exc *
<Member> tL0910c pt09c pt10c 0.55 0.0 4 Obj *
In-Situ Member Lengths
These are the lengths of the members when they are in place
and prestress is applied. These are raw unadjusted values and
assume the hubs of the structure are single points. The
values are in model units.
strut0103a: 2.5 strut0204a: 2.5 strut0305a: 2.5
strut0406a: 2.5 strut0507a: 2.5 strut0608a: 2.5
strut0709a: 2.5 strut0810a: 2.5 baseta: 1.5
apexta: 1.5 guy0a: 1.29449 guy1a: 1.8429
guy2a: 2.0547 guy3a: 2.30991 guy4a: 2.44909
guy5a: 2.45087 guy6a: 2.30329 guy7a: 1.96954
guy8a: 1.65374 guy9a: 1.29282 TL0102a: 1.65685
TS0203a: 0.815736 TL0203a: 1.8942 tS0203a: 0.779799
TS0304a: 0.703617 tT0303a: 1.24984 TL0304a: 1.94921
tS0304a: 0.937454 tL0304a: 1.89242 TS0405a: 0.581064
tT0404a: 1.61934 TL0405a: 2.05214 tS0405a: 0.822683
tL0405a: 2.17251 TS0506a: 0.825716 tT0505a: 1.63528
TL0506a: 2.02911 tS0506a: 0.555734 tL0506a: 2.19511
TS0607a: 1.00632 tT0606a: 1.35225 TL0607a: 1.98738
tS0607a: 0.676035 tL0607a: 1.95204 TS0708a: 0.601817
tT0707a: 1.06102 TL0708a: 1.91523 tS0708a: 0.790178
tL0708a: 1.60056 TS0809a: 0.832396 tT0808a: 0.896336
tS0809a: 0.87275 tL0809a: 2.22274 tL0910a: 1.73194
strut0103b: 2.5 strut0204b: 2.5 strut0305b: 2.5
strut0406b: 2.5 strut0507b: 2.5 strut0608b: 2.5
strut0709b: 2.5 strut0810b: 2.5 basetb: 1.5
apextb: 1.5 guy0b: 1.58824 guy1b: 2.27898
guy2b: 2.31517 guy3b: 2.00607 guy4b: 2.00234
guy5b: 2.31354 guy6b: 2.42309 guy7b: 2.51111
guy8b: 2.21836 guy9b: 1.45336 TL0102b: 1.75521
TS0203b: 0.930325 TL0203b: 1.93809 tS0203b: 0.969385
TS0304b: 0.682114 tT0303b: 1.04206 TL0304b: 1.87199
tS0304b: 0.721216 tL0304b: 1.67169 TS0405b: 0.719199
tT0404b: 1.07086 TL0405b: 1.84611 tS0405b: 0.66144
tL0405b: 1.6706 TS0506b: 0.729723 tT0505b: 1.31591
TL0506b: 1.95608 tS0506b: 0.982056 tL0506b: 1.96984
TS0607b: 0.618468 tT0606b: 1.62606 TL0607b: 2.08466
tS0607b: 0.82972 tL0607b: 2.19678 TS0708b: 0.767308
tT0707b: 1.64813 TL0708b: 2.05111 tS0708b: 0.571532
tL0708b: 2.17249 TS0809b: 0.909215 tT0808b: 1.2749
tS0809b: 1.31028 tL0809b: 1.63909 tL0910b: 1.27772
strut0103c: 2.5 strut0204c: 2.5 strut0305c: 2.5
strut0406c: 2.5 strut0507c: 2.5 strut0608c: 2.5
strut0709c: 2.5 strut0810c: 2.5 basetc: 1.5
apextc: 1.5 guy0c: 1.57956 guy1c: 2.06962
guy2c: 2.48401 guy3c: 2.44915 guy4c: 2.32809
guy5c: 2.01271 guy6c: 1.96583 guy7c: 2.30523
guy8c: 2.08077 guy9c: 1.58093 TL0102c: 1.76846
TS0203c: 0.933774 TL0203c: 2.09563 tS0203c: 0.810639
TS0304c: 0.804028 tT0303c: 1.50537 TL0304c: 2.0392
tS0304c: 0.562122 tL0304c: 2.07491 TS0405c: 0.988053
tT0404c: 1.3483 TL0405c: 1.97325 tS0405c: 0.700724
tL0405c: 1.98012 TS0506c: 0.623741 tT0505c: 1.05624
TL0506c: 1.90696 tS0506c: 0.74613 tL0506c: 1.62697
TS0607c: 0.712758 tT0606c: 1.0407 TL0607c: 1.83189
tS0607c: 0.675405 tL0607c: 1.64644 TS0708c: 0.761508
tT0707c: 1.29472 TL0708c: 1.85867 tS0708c: 1.00551
tL0708c: 1.96604 TS0809c: 0.853541 tT0808c: 1.65197
tS0809c: 0.92213 tL0809c: 1.9975 tL0910c: 1.81965
Relative Member Prestress Force Magnitudes
These values are useful for developing an assembly
strategy for the structure. The tighter tendons are much
easier to tie in place early on, while the looser tendons
can be left to the last. This information is also used
to adjust tendon lengths since the measured length of a tendon
will be shorter for a highly-stressed tendon with the same
in-situ length as a tendon which is not so stressed.
strut0103a: -2.53472 strut0204a: -2.14325 strut0305a: -2.54182
strut0406a: -1.9755 strut0507a: -1.99333 strut0608a: -2.54864
strut0709a: -2.23874 strut0810a: -2.81728 baseta: 0.49137
apexta: 1.0465 guy0a: 0.605697 guy1a: 0.862303
guy2a: 1.62237 guy3a: 1.24735 guy4a: 0.904466
guy5a: 0.905121 guy6a: 1.24377 guy7a: 1.75486
guy8a: 1.40237 guy9a: 0.413703 TL0102a: 0.911268
TS0203a: 1.32149 tS0203a: 1.26327 TS0304a: 1.11875
tT0303a: 0.749902 tS0304a: 1.49055 TS0405a: 0.923892
tT0404a: 0.664481 tS0405a: 1.30807 TS0506a: 1.31289
tT0505a: 0.67102 tS0506a: 0.883617 TS0607a: 1.60006
tT0606a: 0.811349 tS0607a: 1.0749 TS0708a: 0.95689
tT0707a: 0.930854 tS0708a: 1.25638 TS0809a: 1.32351
tT0808a: 0.887373 tS0809a: 1.38767 tL0910a: 0.952565
strut0103b: -2.07981 strut0204b: -2.53194 strut0305b: -2.23747
strut0406b: -2.24067 strut0507b: -2.5174 strut0608b: -1.96563
strut0709b: -1.78223 strut0810b: -3.44806 basetb: 0.218071
apextb: 0.48072 guy0b: 0.508235 guy1b: 0.305245
guy2b: 1.25019 guy3b: 1.58397 guy4b: 1.58103
guy5b: 1.24931 guy6b: 0.894861 guy7b: 0.821817
guy8b: 0.709874 guy9b: 0.4113 TL0102b: 0.965365
TS0203b: 1.50713 tS0203b: 1.5704 TS0304b: 1.08456
tT0303b: 0.914221 tS0304b: 1.14673 TS0405b: 1.14353
tT0404b: 0.939491 tS0405b: 1.05169 TS0506b: 1.16026
tT0505b: 0.789543 tS0506b: 1.56147 TS0607b: 0.983364
tT0606b: 0.667237 tS0607b: 1.31926 TS0708b: 1.22002
tT0707b: 0.676295 tS0708b: 0.908736 TS0809b: 1.44565
tT0808b: 0.764943 tS0809b: 2.08334 tL0910b: 1.43642
strut0103c: -2.3971 strut0204c: -1.90488 strut0305c: -1.9937
strut0406c: -2.53319 strut0507c: -2.23243 strut0608c: -2.2634
strut0709c: -2.55189 strut0810c: -2.37766 basetc: 0.455867
apextc: 0.304629 guy0c: 0.505458 guy1c: 0.662278
guy2c: 0.917362 guy3c: 0.904488 guy4c: 1.25717
guy5c: 1.58921 guy6c: 1.55219 guy7c: 1.24482
guy8c: 0.665848 guy9c: 0.505896 TL0102c: 0.972652
TS0203c: 1.51271 tS0203c: 1.31323 TS0304c: 1.27841
tT0303c: 0.617713 tS0304c: 0.893775 TS0405c: 1.571
tT0404c: 0.808982 tS0405c: 1.11415 TS0506c: 0.991748
tT0505c: 0.926659 tS0506c: 1.18635 TS0607c: 1.13329
tT0606c: 0.913023 tS0607c: 1.07389 TS0708c: 1.2108
tT0707c: 0.776829 tS0708c: 1.59876 TS0809c: 1.35713
tT0808c: 0.600715 tS0809c: 1.46619 tL0910c: 1.00081
Average tendon force magnitude: 1.0445
Construction Lengths (in inches, 16ths and 32nds)
The construction length of a tendon is less than the in-situ
length since when the tendon is measured off it isn't under
any prestress force. The construction length for a member
represents the distance between the locations where it
departs from the hub. The struts were cut from
1-inch by 1-inch hardwood garden stakes. The tendon were made
of single strands of twisted #18 nylon twine. Its behavior
under stress is highly non-linear, so a look-up table
was used to compute strains. Prestress forces were assumed
to affect tendon lengths and not strut lengths.
stress-strain chart: v04oct_d/wellingtn.ssc
Average Tendon Force Magnitude (chart units)> 20
Length Scale Factor> 42/2.5
Strut and Tendon Hub Adjustments> 0 0.5
(adjust the tendon lengths by subtracting a half inch from
both ends)
strut0103a: 42 0 0 strut0204a: 42 0 0 strut0305a: 42 0 0
strut0406a: 42 0 0 strut0507a: 42 0 0 strut0608a: 42 0 0
strut0709a: 42 0 0 strut0810a: 42 0 0 baseta: 22 15 1
apexta: 22 2 0 guy0a: 19 8 0 guy1a: 27 11 1
guy2a: 29 13 1 guy3a: 34 4 0 guy4a: 37 0 1
guy5a: 37 1 0 guy6a: 34 2 1 guy7a: 28 6 0
guy8a: 24 1 1 guy9a: 19 13 0 TL0102a: 24 12 0
TS0203a: 11 7 1 tS0203a: 10 15 1 TS0304a: 9 14 0
tT0303a: 18 10 0 tS0304a: 13 3 1 TS0405a: 8 1 0
tT0404a: 24 8 0 tS0405a: 11 9 1 TS0506a: 11 10 0
tT0505a: 24 12 0 tS0506a: 7 11 0 TS0607a: 14 2 1
tT0606a: 20 2 1 tS0607a: 9 7 1 TS0708a: 8 6 0
tT0707a: 15 8 0 tS0708a: 11 2 0 TS0809a: 11 11 1
tT0808a: 12 15 1 tS0809a: 12 4 1 tL0910a: 25 13 1
strut0103b: 42 0 0 strut0204b: 42 0 0 strut0305b: 42 0 0
strut0406b: 42 0 0 strut0507b: 42 0 0 strut0608b: 42 0 0
strut0709b: 42 0 0 strut0810b: 42 0 0 basetb: 23 8 0
apextb: 23 0 0 guy0b: 24 5 1 guy1b: 35 15 1
guy2b: 34 5 0 guy3b: 29 2 1 guy4b: 29 1 1
guy5b: 34 5 0 guy6b: 36 10 1 guy7b: 38 3 0
guy8b: 33 13 1 guy9b: 22 6 0 TL0102b: 26 3 0
TS0203b: 13 1 1 tS0203b: 13 10 0 TS0304b: 9 8 1
tT0303b: 15 3 1 tS0304b: 10 2 0 TS0405b: 10 1 1
tT0404b: 15 10 1 tS0405b: 9 4 0 TS0506b: 10 4 0
tT0505b: 19 9 1 tS0506b: 13 13 1 TS0607b: 8 10 0
tT0606b: 24 10 0 tS0607b: 11 11 0 TS0708b: 10 12 1
tT0707b: 24 15 0 tS0708b: 7 15 0 TS0809b: 12 13 0
tT0808b: 19 0 0 tS0809b: 18 6 0 tL0910b: 18 6 0
strut0103c: 42 0 0 strut0204c: 42 0 0 strut0305c: 42 0 0
strut0406c: 42 0 0 strut0507c: 42 0 0 strut0608c: 42 0 0
strut0709c: 42 0 0 strut0810c: 42 0 0 basetc: 23 0 1
apextc: 23 5 1 guy0c: 24 3 1 guy1c: 31 9 1
guy2c: 37 9 0 guy3c: 37 0 1 guy4c: 34 8 0
guy5c: 29 4 0 guy6c: 28 9 1 guy7c: 34 3 0
guy8c: 31 12 0 guy9c: 24 3 1 TL0102c: 26 6 0
TS0203c: 13 2 0 tS0203c: 11 6 1 TS0304c: 11 5 0
tT0303c: 22 13 0 tS0304c: 7 12 1 TS0405c: 13 14 1
tT0404c: 20 1 1 tS0405c: 9 13 0 TS0506c: 8 11 0
tT0505c: 15 7 0 tS0506c: 10 7 1 TS0607c: 10 0 0
tT0606c: 15 3 0 tS0607c: 9 7 0 TS0708c: 10 11 0
tT0707c: 19 4 1 tS0708c: 14 2 1 TS0809c: 12 0 1
tT0808c: 25 2 1 tS0809c: 13 0 0 tL0910c: 27 2 0
Material Quantities
This provides an estimate of how much material will
be needed to assemble the structure, in this case
inches of garden stake and inches of nylon twine.
The lengths must be adjusted to take into account the
fact that the strut extends past the hub and some length
of tendon is required to tie it to the strut.
Length Scale Factor> 42/2.5
Strut and Tendon Adjustments> (-1) (-6)
(adjust the strut lengths by adding an inch to
both ends; adjust the tendon lengths by adding
six inches to both ends)
Cross
Type Section Quantity Count
1 1 1056 24
10 1 212.129 6
7 1 1141.62 30
3 1 552.022 13
4 1 190.056 5
2 1 1151.18 48
Strts 1056 24
Tndns 3247.02 102
Alternative Construction Lengths
Several of the original tendons on the arch snapped after
rubbing against a tree limb it was under. They were replaced
by double strands of braided nylon twine. The braided
twine's behavior under stress is different from the
behavior of twisted twine, so a different look-up table
was used to compute strains.
stress-strain chart: v02oct_s/evans.ssc
Average Tendon Force Magnitude (chart units)> 20
Length Scale Factor> 42/2.5
Strut and Tendon Hub Adjustments - s;t> 0 0.5
strut0103a: 42 0 0 strut0204a: 42 0 0 strut0305a: 42 0 0
strut0406a: 42 0 0 strut0507a: 42 0 0 strut0608a: 42 0 0
strut0709a: 42 0 0 strut0810a: 42 0 0 baseta: 23 5 1
apexta: 22 9 0 guy0a: 19 13 1 guy1a: 28 3 1
guy2a: 30 6 1 guy3a: 34 14 1 guy4a: 37 11 1
guy5a: 37 12 0 guy6a: 34 13 0 guy7a: 28 15 0
guy8a: 24 8 1 guy9a: 20 1 1 TL0102a: 25 3 0
TS0203a: 11 11 0 tS0203a: 11 2 1 TS0304a: 10 1 0
tT0303a: 18 15 1 tS0304a: 13 7 1 TS0405a: 8 3 1
tT0404a: 25 0 0 tS0405a: 11 13 0 TS0506a: 11 13 1
tT0505a: 25 3 1 tS0506a: 7 13 1 TS0607a: 14 7 0
tT0606a: 20 8 1 tS0607a: 9 10 1 TS0708a: 8 8 1
tT0707a: 15 12 1 tS0708a: 11 5 0 TS0809a: 11 15 0
tT0808a: 13 3 1 tS0809a: 12 8 1 tL0910a: 26 5 1
strut0103b: 42 0 0 strut0204b: 42 0 0 strut0305b: 42 0 0
strut0406b: 42 0 0 strut0507b: 42 0 0 strut0608b: 42 0 0
strut0709b: 42 0 0 strut0810b: 42 0 0 basetb: 23 13 0
apextb: 23 5 1 guy0b: 24 12 0 guy1b: 36 7 0
guy2b: 34 15 1 guy3b: 29 11 1 guy4b: 29 10 1
guy5b: 34 15 0 guy6b: 37 5 0 guy7b: 38 14 0
guy8b: 34 7 1 guy9b: 22 11 0 TL0102b: 26 11 0
TS0203b: 13 5 1 tS0203b: 13 14 1 TS0304b: 9 12 0
tT0303b: 15 8 0 tS0304b: 10 5 0 TS0405b: 10 4 1
tT0404b: 15 15 0 tS0405b: 9 7 0 TS0506b: 10 7 0
tT0505b: 19 15 1 tS0506b: 14 1 1 TS0607b: 8 12 1
tT0606b: 25 1 1 tS0607b: 11 14 1 TS0708b: 11 0 0
tT0707b: 25 7 0 tS0708b: 8 1 1 TS0809b: 13 1 0
tT0808b: 19 5 1 tS0809b: 18 12 1 tL0910b: 18 11 1
strut0103c: 42 0 0 strut0204c: 42 0 0 strut0305c: 42 0 0
strut0406c: 42 0 0 strut0507c: 42 0 0 strut0608c: 42 0 0
strut0709c: 42 0 0 strut0810c: 42 0 0 basetc: 23 6 0
apextc: 23 10 1 guy0c: 24 9 1 guy1c: 32 3 1
guy2c: 38 4 0 guy3c: 37 11 1 guy4c: 35 2 1
guy5c: 29 13 0 guy6c: 29 2 1 guy7c: 34 13 0
guy8c: 32 6 0 guy9c: 24 10 0 TL0102c: 26 14 0
TS0203c: 13 6 0 tS0203c: 11 9 1 TS0304c: 11 8 1
tT0303c: 23 3 1 tS0304c: 7 15 0 TS0405c: 14 3 0
tT0404c: 20 7 1 tS0405c: 10 0 0 TS0506c: 8 14 0
tT0505c: 15 11 1 tS0506c: 10 11 0 TS0607c: 10 3 0
tT0606c: 15 7 1 tS0607c: 9 10 0 TS0708c: 10 14 1
tT0707c: 19 10 1 tS0708c: 14 7 0 TS0809c: 12 4 0
tT0808c: 25 10 0 tS0809c: 13 4 0 tL0910c: 27 10 1
Alternative Material Quantities
This provides an estimate of how much material will
be needed to assemble the structure when double strands
of braided nylon twine are used for all the tendons.
The Quantity value given for each Type does not take
into account the Cross Section value. The total
Quantity given across from Tndns does.
Length Scale Factor> 42/2.5
Strut and Tendon Adjustments> (-1) (-6)
Cross
Type Section Quantity Count
1 1 1056 24
10 2 215.348 6
7 2 1162.58 30
3 2 562.021 13
4 2 193.623 5
2 2 1173.01 48
Strts 1056 24
Tndns 6613.16 102
View of the Tensegrity Arch
Schematic for the Tensegrity Arch
structure: arch/x3l8arch2.rc variable: arch/x3l8arch2.dat digit list: src/standard.dls |
CONTACT:
Bob Burkhardt
Tensegrity Solutions
Box 426164
Cambridge, MA 02142-0021
USA
e-mail: bobwb@juno.com