1 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.991
machine-extracted · confidence unavailable · Check page ↗Document / 7 pages
DEP final design review comments, tunnel project, Jan 1988
Machine-extracted title · confidence 90%Department of Environmental Protection letter providing design review comments on tunnel project contract drawings, requesting pressure relief manhole details, existing sewer…
NYC-WTC_000165322–000165328Folder label: “North Access Tunnel W. 33rd St. To w. 38TH ST”
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NYC 9/11 Public Portal Document
-2-
R = d/2 + (a/2 ) = 3+4/Sfn 45 = 3 + 5,66 = 8.66 ft. StnA/2 T= R tanA/2 = R ten 45 = R = 8.66’ c=6''
b= a/2 -a/2 = 5.66 -4 = 1.66 StnA/2 tanA/2
Thus the guidelines have not been met. Also no a,b or c dimensions are provided. Revise the layout and size of the chamber per our guidelines. Submit computations for R,T & and additional structural computations. Sxow a,b, and c dimensions for flow redirefflion chambers. 7. We have been advised by wr Division of Plant Operations (Wards Island) that the aluminum stop planks as ^own on dwg. No. S- 34 are not acceptable. Wooden stop planks should be used. Find enclosed castings for access cleanout/manholes.
Very truly yours.
MAGDIFARAG, P.E., CHIEF Dtviston of Sewer Regulations & Control, Bureau of Sewers
NYC-WTC_000165323
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NYC-WTC_000165323Source: NYC Law Department, mirrored locally
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Letter from DEP Bureau of Sewers regarding unreviseed drawings and as-built records for the tunnel project.
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Project responses to Bureau of Sewers technical comments regarding manhole details, existing facilities replacement, and drain specifications.
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Letter provides specific design comments regarding roof slab thickness and removable slab configuration requirements.
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machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000165786
Department of Environmental Protection memo reviewing structural computations for a proposed sewer chamber, providing specifications for roof slab thickness and steel values.
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machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000165337
Contractor responses to sewers bureau requirements on manhole maintenance, splash blocks replacement, and drain pipe specifications.
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machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000165536
March 15, 1982 DEP letter providing engineering requirements for a telephone manhole load above the proposed 13-inch sewer line.
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Environmental Protection Department record related to tunnel project between W. 33rd and W. 38th Street.
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NYC-WTC_000165290
Letter enclosing a signed agreement between DEP and a contractor regarding sewer work in the vicinity of 11th Avenue.
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NYC-WTC_000165299
DEP legal correspondence regarding tunnel construction and sewer work in vicinity of 11th Avenue and W. 33rd Street.
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NYC-WTC_000165301
DEP approval of final contract plans for tunnel project from W. 33rd to W. 38th Street with construction specifications.
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