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Home My WebLink AboutR-81-0203f P RESOLUTION NO. A RESOLUTION AUTHORIZING ANI) DIRECTING THE CITY MANAGER AND THE PROPER CITY OFFICIALS TO ISSUE A BUILDING PERMIT FOR THE CONSTRUCTION OF THE WORLD TRADE CENTER BUILDING AND GARAGE, AT 100 S.E. 2ND STREET, PERMITTING PILES FOR THE STRUC- TURE TO EXTEND UNDER THE: PUBLIC RIGHT OF WAY APPROXIMATELY SEVEN (7) FEET ON THE. WEST SIDE OF S.B. 1ST AVI:NUF. AND THI: NORTH SIDE OF S.I- 2ND STREET UNDER THE TERMS AND CONDITIONS CONTAINED HEREIN. BE IT RESOLVED 13Y THE COMINTISSTON OF THE CITY OF `fIAMT, FLORIDA: Section 1. The City ?tanager and the proper City Officials are herebv authorized and directed to issue a Building Permit for the construction of the World Trade Center Building and Garage, at 100 S.F. 2nd Street, permitting Piles for the structure to extend under the Public right of way approxi- mately seven (7) feet on the West side of S.E. 1st Avenue and the North side of S.F. 2nd Street according, to plans submitted and which plans and other documents are incor- porated heruin by reference, provided that said plans meet �'- all requirements of the South F I o r i da Building Code and Ordi- nanc(•s of the City of Miami, said property being described as follows. TRACT A, WORLD TRADI? CENTER, MIAMT PLAT BOOT: 115-41. PASSED ANT) ADOPTED this 17 -day of MARCH , 1981. _ MAURICE A. FERRE M A Y 0 R EST. ` �� (�:�►1-�� .� �.: '� tea RALPH G. ONGIE, CIT1' Ci..I:I: PREPA RL•'D ND APPROI'I'.11 BY: TI-'RR'Y V. PEi :1' IT Assistant Citv Attornev I 1 i APPROVED AS TO FORM ANT) CORRECTNESS: ROBERT F. CLARK ACT 1 NC CITY ATTORNEY CITY COMMISSION � MEETING OF tAAR 1 7 RESOLUTION NO.................,�. REMARKS: .......... . ........ »...... . / CITY OF MIAMI. FLORIDA `L•/� INTER -OFFICE MEMORANDUM TO Richard Fosmoen City Manager FROM Gerardo S , A.I.A. Director Building & Zoning Inspection Department _,.1T[March 5, 1981 V i' ." 3 : _- , - V� —Lc Encroachment of piles into the public 4EFER�v-�-�. right of way foundation for the Miami World Trade Center at 100 S.E. 2nd St. =_rc��suRs The Building & Zoning Department recommend to the Ccmnission to pass and adopt a Resolution to permit the exceptional battered piling system that, in accordance with the attached exhibits, are required to acccmplish a safe foundation system for the design by I. M. Pei and Partners and F.G.S.C. for the World Trade Center previously approved by the City Omission. The attached Exhibit A, letter dated March 4, 1981 to Vince Grimm from Jim Armstrong of F.G.S.C., outlines the design factors leading to the requirement for this foundation system. The attached Exhibit B, letter dated March 3, 1981 to Jim Armstrong from A.K.R. Abiad, P.E. of CBM Engineers, Inc. covers technical, structural aspects of the design. The attached Exhibit C, a sketch numbered SK-1 and dated 3/2/81 by F.G.S.C., indicates in plan the relationships among the structural components and the property line. The attached Exhibit D, a sketch numbered SK-2 and dated 3/2/81 by F.G.S.C., indicates in section these same relationships, plus the sub -grade utilities. The attached Exhibit E, a letter from Kenneth R. Lietz of George Hyman Construc- tion Co., outlines the impact on the construction schedule of the stop order from the City of Miami Building Inspector. GS:lb Encs. cc: Director's file Reading file F K 1-1 % CS t 'T March 4, 1981 Mr. Vince Grid Assistant City Manager City of Miami Miami, Florida Re: Miami world Trade Center/ nT1! /E Convention Center Parking Garage `1 _ '• ? �J F/G/S/C No. C-0126 Dear Mr. Grimm: In accordance with your request, in the meeting at City Hall of March 3, 1981, this letter will outline the factors which have led to the use of battered piles extending under the sidewalk, as shown on the attached sketches. As you are aware, Dade Savings holds the air -rights lease from the City to build a 35-story office tower on top of the 11-story parking garage. One of the project's key design determinants, stipulated to I. M. Pei and Partners by Ron Lipton, President of Dade Savings, was that the tower be located as close as possible to the Flagler Street Financial Center. This request dictated a position at the northwest corner of the site. In addition, the requirements for: (1) a maximally efficient garage with entrances and exits at both S.E. 2nd and 3rd Streets, (2) 20,000 square feet of ground floor retail space, (3) lobbies for both garage and tower, (4) a truck dock for the tower, (5) access to and provisions for the Downtown People Mover Station at the 4th level, (6) the Pedestrian Connector to the Convention Center, and (7) utility space provisions for tower, retail, DPM and garage, all militated toward this location for the tower. In the best interests of the City, both government and citizens, and of the tower client, I.M. Pei and Partners, with our concurrence, designed the project in such a way as to maximally integrate the tower design with that of the garage. All the clients deserve nothing less. To provide less than the best of urban design for so major a project is not in the tradition of either I.M. Pei 6 Partners or F/G/S/C. In this spirit, the design evolved to include a flush, planar, curtain -wall over both the garage and the tower, such that the two projects are integrated into a single design expression from top to bottom. Because the kind of tenants to be expected in a world Trade Center will each require a relatively small amount of floor area, large floors are not feasible, due to their inherently large quantities of space far from the window line. Such space would not be econo- mically rentable. The overall economics dictate 600,000 square feet of total space, and when this large amount of space is achieved in smaller floor increments, a relatively tall building results. continued..... Ferendino Grafton Spillis Candela architects engineers planners DOUGLAS ERTRAKE i CORAL GABLES FLORIDA 33IM �06'M1169t � TELEX M 1607 k4 0 3 March 4, 1961 Mr. Vince Grimm Page 2 The resulting 46-story building, including the garage, is very susceptible to wind loads. Therefore, our structural engineer has chosen the best and most economical structural concept to resist wind, a so-called "tube" structure formed by the peri- meter columns and spandrel beams. Such a structure dictates that the columns be located as close as possible to the exterior face of the building. Leasing factors and minimization of conflicts with parking spaces and circulation in the garage also reinforce this location for the columns. The attached letter from CBM Engineers, Inc. elaborates further on the structural aspects and should be self-explanatory, summing up the reasons for needing to use the battered piles. With regards to the physical implications of using the battered piles, we believe that the potential impact of the battered piles on utilities which now exist near these piles, or which may exist in the future, will be negligible. As is shown on the attached sketch section, the closest that the piles come to any existing utility line is approximately 9'-0", which, at the elevation of the newly -relocated sewer in question, is only about 8" closer than would be the case if the piles were not battered. Further, the encroachment beyond the allowable plane (6" outside the property line) is approximately 6'-7". I should point out in this context that the present property line is new and is set back 5'-0" further than the original property line on the north, or S.E. 2nd street, side, so that we were not able to extend the pile cap or mat out enough to achieve symmetry about the column center line. If we were allowed to use the original property line, our encroachment beyond the allowable plane would be only approximately 1'-7". Due to the fact that 1. The water table is at approximately elevation + 2 to 3 feet above Miami datum, 2. Economics dictate avoidance of construction below that level, when at all possible, and 3. The new sewer line is designed for anticipated sewer needs in the area, it is unlikely that any other utility lines will be installed in any position which would be in conflict with these piles. We are now fully aware of your opposition to setting a precedent in this case. However, since economic pressure is likely to be dictating more new buildings in the large and taller range in Miami in the future and since the bearing strata below Downtown Miami are limited in their load -bearing capacity, especially for uplift due to wind, it is possible that the City may come under substantial pressure in the future to approve measures such as on this project. I do not offer this as a justification for this project but simply as a point of information. We will very much appreciate your aid in satisfactorily resolving this issue as soon as possible. As you can see from the attached copy of a letter from George Hyman Construction, the timing is critical to the progress of the project. >Teniorr1PV9ai=cePre1s r ,! P FOLL . o , A.Z.A. u VV» dent JFA/mc cc: G. Salman, D. Cather, M. Feldman, H. Fredenburgh, J. Colaco, B. Langan, K. Lietz CO Ferendino/Grafton/Spillis/Candela architects engineers planners CW 94G#496. M Stnis.�W -9 M VW West LCC 5oa1l1. Hot�ion % �1Q274wU SA T�s3G:ti0r�0 i 13/4'� t TWX v?(3-rc1-.31. , ` Pfil�CAhIS: � 1 P cdiow. PhD. PE �--- P V 6crrvahcr. PhD. PE xH i r3rr i3 K Mohwxkm P[ Morem (�[�s A. v+ana. PE L LU March 3, i981 Z Mr. Jim Armstrong Fereudiuo, Grafton, Spellis a Candela 800 Douqles Street Entrance Coral Sables, FL 33134 ( j RE: MIAMI WORLD TRADE GERM •- \.J - SATTER-PILE Of -%OM- MD KV-PROPERi7 LIKE — - — — Dear Jim, This letter is to summarize the need for Batter piles on the north property lime on the above project. 1. The building is one of the tallest in Miami and consequently we have very large column loads on the exterior columns. The exterior gravity column loads are in the range of 2,000 Tons and the wind loads add approximately 2,200 Tons in the worst case. Based on the maxiam pile capacity of 120 Tons we would need approximately 18 piles per column for gravity loads and a larger number where the wind controls the design. 2. The tightest pile spacing that can be used according to the soils engineer's is 31-00 at the top. As the columns are spaced at 15' on centers, the xaxiaes number, of piles in one direction is 5. Hence we need at least 4 rows in the other 'di rection•(transverse to the facade) 3. The centerline of the columns on the north face is V -0" from the property line and on the west it is 7'-0'. The building code does not allow the pile cap to extend more than 6 inches beyond the property tine. You can well understand that it would not be possible under these restric- tions to build a symmetrical pile cap. 4. We have revfewed all options such as moving the building to the south OM east, shrinking the building etc. and every one of these options either makes the garage operation impossible or i"cts the econ uics adversely. i W f Jim Armstrong March 3, 1981 Page two 5. The batter of the piles on the north and west side is needed to minimize the eccentricity of the pile cap (thereby minimizing the uplift on the pile group) and also to space the piles adequately at the rock layer so that the pile capacity would not be downgraded. In conclusion, we would like to emphasize that if the piles cannot be battered it would seriously affect the economics of the project. Please tali me if you need any further information. Sincerely yours, CBM ENGINEERS, INC. 61,:2 /� 'fe- a� A. K. R. Abi ad, P.E. Senior Associate cc: Mort Feldman Harold Fredenburg •'- ••�. .�I�t •' �� •i•n'S/.. •LOIN.. •4. .i;, �.•, ... i� ..� �1;: fr �•^. 4.f �.:•�:.�\•. iT•'•.�ar .. ... •.. r P,90?PM,Tr LINE zozit Jv 0?. L cot eo 6*0 cooiumr4 Lli Cl) LL- �oPt�C'fi'Y LJr� - f C7 FWFLI-t- U40 4. eat• eo L UP1►J C-PIP0 90 MAT - r�NKH ems. f�♦ to! a� I — esl�,i l,.iNe �,� R1,�c er.•. - IIL • • e e • I P. e e • a e . iXJ� 6i,I�NIT Y SefWeR.. � V 1 1 � b o� T�•lre:K. ��NG. M�►T I r¢� �c.•5r1' cow• R� P��►�tt"fL2 Pll,.�'i O'A�i'fGRtD 0" SHOWN ti�-nvr� -N u MAT AT y.0 . 2 N. ° ST. iv 1.O Comm No C•IKv Sh" No *0(--2 total A �xiA%elr O THE GEORGE HYMAN CONSTRUCTION CO. 6245 N. W. S3rd STREET, SUITE NO. 100 MIAMI, FLORIDA 33166 (305) 591-7490 March 3, 1981 FERENDINO GRAFTON SPILLIS CANDELA Architects - Engineers - Planners 800 Douglas Entrance Coral Gables, Florida 33134 ATTN : James Armstrong RE: Miami World Trade Center Parking Garage SUBJECT: Stop Work Order from City of Miami Building Department (Installation of Battered Piles) Our File No. 710-81005 Gentlemen: The "Stop Work Order" on the installation of Battered Piles is seriously impacting the Construction Schedule for the above referenced Project. The Battered Piles on the North side of this Project must be installed prior to the remaining straight piles in order to maintain a productive driving sequence. The Pile Contractor cannot maintain a productive output by driving straight piles and then coming back and driving the Battered Piles. This Stop Work Order must be recinded as soon as possible in order to permit the pile driving work to continue as previously planned. KRL :mm cc: Mr. M . Feldman Mr. C . J. Raymond 710-81005 Files Very truly yours, Jon E- GEORGE HY, IAN CONSTRUCTION CO. neth R. Lietz tract Manager