Engineering and Contracting . -^- ibarsZOcc , , ,S37, S44,S46,Sh. ,„,.„. 104-0 ir ^IS -M-O-:-:- /36-—^ii!,...;,i i ??-/38- ? -ao--^ sa SM .:>l- •11 -I. Tt Jl b Ol On 36 r li ? £6- rri .J1 S5 lUi SJ7 rr^ ^ P/f i Po v,i Molf Section EE Fig. 2. Plans, Elevation and Sections of 180-Ft. Reinforced Concrete Arches of Tunkhannock Creek Viaduct. 384 Engineering and Contracting Vol. XLI. No. 13. the third spandrel wall from the pier (seeFig. 2, b). This viaduct requires 47,000 cu, yds. offoundation
Engineering and Contracting . -^- ibarsZOcc , , ,S37, S44,S46,Sh. ,„,.„. 104-0 ir ^IS -M-O-:-:- /36-—^ii!,...;,i i ??-/38- ? -ao--^ sa SM .:>l- •11 -I. Tt Jl b Ol On 36 r li ? £6- rri .J1 S5 lUi SJ7 rr^ ^ P/f i Po v,i Molf Section EE Fig. 2. Plans, Elevation and Sections of 180-Ft. Reinforced Concrete Arches of Tunkhannock Creek Viaduct. 384 Engineering and Contracting Vol. XLI. No. 13. the third spandrel wall from the pier (seeFig. 2, b). This viaduct requires 47,000 cu, yds. offoundation , 165,000 cu. yds. of con-crete and 1,200 tons of reinforcing steel. Three work was progressing on the shops, store-houses and office buildings. FOUNDATION EXCAVATION. After the narrow-gauge tracks had been C3> 5 brought in, and excavation was started earlyin July at pier No. 4. On July 16 a Model 40 Marion steamshovel, having a 1-cu. yd. dipper, was broughtin and started digging its way through the. ToScranton-- E&C Fig. 3. Layout of Contractors Plant for Construction of Tunkhannock Creek Viaduct. classes of concrete were used, designated asClass A, Class B, and Cyclopean. Class.\ concrete is a 1 :2 :4 mixture and is used onlyfor the reinforced floor slab over the abut-ment spans; Class B is a 1:3:5 mixture, andis used for all other work above the springingline; Cyclopean is the same as Class B,with derrick stone embedded in the con-crete, and is used in the piers below the spring-ing line. contractors plant and general contract for the construction of theviaduct was formally executfed in June, 1912,but the successful bidder was notified aboutthe middle of May and started work on May24. 1912. The general layout of contractors plant isshown in Fig. 3. The present tracks of therailroad company are on an embankment whichrests on a small ridge, so that they are about(iO ft. higher than the creek bed and about 35ft. higher than the ground level at t
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherchicago, bookyear19
