CONTENTS 
Page 
V1 La ECON 6 NH wo Tae 0 NAP I NR gr UR Sa 
NTE SEO MWALMESSES ae ie Ole els Nese SEL UE Ue LOU SUSE A 2 
III. Summary of factual investigation.___.________._.__._-_---_--------- 4 
PoPrelimainanys background wee le eae i Se eC eh eae 4 
Zuieasiion ative tur lyse uses MU Fy OU a ak A Ree a G 
(Qe Blatiorm elevators as ae eho eile LAUR) Mia a a 8 
(6) Number and'size of legs_____..2____-_222-_ ll - 9 
(c) Braced underwater foundation___________________- 9 
SeeDesign ofthe; Lexas towerss. 22 eS ea ae 10 
(@) BED ysicalid es crip Gi rupee ee eee eI apt i ee 10 
(6) Design specifications. ___--_-___._---------------- 12 
Ven Constructioniof the texas tOwers) Soe ne fae Re an ak ea 16 
Warkepairs:tomlexas tower INO 4a) sees eee Se nk ey Os US 20 
Valen Searchyai GiSuTvieyy aC UlvGles pyaar sk sy ae US 31 
lara buovers eave l (Coyne Woy Ae eee eS 35 
ILLUSTRATIONS 
1. Texas tower No, 4 as it appeared prior to Hurricane Donna, September 
TD TERY SY) gaia pCa ANG RD a ee a aN RN gD vi 
2urbexas tower locations ss. 22 alysis Lie Nae Ue ee ad 5 
3. Cutaway view of tower platform (artist’s conception) -_-----_-------- 11 
Ay Digcram of underwater bracingsystem= 4) eset 2 eee ee 13 
5. Texas tower No. 4 erection procedure (Kuss tip-up process) -__-------- 15 
6. Diagram showing history of damages and repairs 2 November 1957 
COMI Sep CCI T 1 OG OW mu eee MUN IR 1 LE Sc abe Le I ee 25 
7. Wave action against above-water X bracing______.__-_-------------- 27 
SeoDamage tothe (ilviney bridge jae yeas ee Ue Lia aly Ne eae 28 
9. Diagram showing history of damages and repairs 12 September 1960 to 
CF AEN GUE ya HEAT EN ka A CU 29 
10. Configuration of wreckage (from C corner looking west) -------------- 33 
11. Configuration of wreckage (from A-B elevation looking east) _---_--_-- 34 
