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STAidDARD TI-IICI°;I~?ESS OF CENTR]TUGALLY CAST IRON PIPE (CONT'D) Size l~lorking PresGure St•and.ard Thic]-mess Class 16~~ 200 ,68 25 16~~ 250 0 73 26 (2) -The thicltness of mechanical joint fittings shall conform to the tables on Pages 219 to 257 of the Handbook of Cast Iron Pipe. The 16~~ Class 250 fi tt:~ng slz--11 have a thiclcress of 0. ~9~' and the 16~' sleeve shall have a tili clcness of U,, y3~' . (D) -Ali. l:ipe and fittings, unJ.ess o~he:!~~Tise sho~um, or required, shall have l~echa.uical type joints and shall c~nferm to the American Standard Specif~ica~-ions A 21,11-1952 and all subsequent amendments there- to; excepting Valves and Hydrants. (E) -Gaskets shall be of rubber or other equally effective pro- tection agai nst u::zeven distortion of the gasket . (F) - uhe~e fittings are shown. which are not covered by the above specification.:: ; their in such particulars as are lacking thereon shal]. conform to the dimensions and otherwise meet -che specifications for the respective type which are carried in the lates~~ revisions to the current edition of the ~'ILandbook of Cast Trop Pipe~~ by the Cast Iron Pipe Research Association or tr~hich are other~~rise shovrn on the Contract Draw- ings. (G) - irhereever changes in line and grades of the main as shown on the drawings are not standard fitting deflections, the Contractor tivill be permitted to s~zbmit details using combinations of standard fittings and sma.lJ_ deflections (not to exceed a maximum or one half (1~2) inch joint opening) in the adjoining lengths of pi e ~ Pi pe to be installed with air cocl~s or drains shall be cast tnrith bosses ther_ eon, and drilled and tapped for two (2) inch connections, and plugged in 'the shop t~rith cast iron threaded plugs, before shipment. (H) - P1.u~;s for bell and spigot pipe and caps for lugged pipe shall be furnished vVith two (21 plugged two (2) inch taps for drain and air cock connections. (I) -Closure pieces shall be accurately measured ar~d cut in the field and installed using solid type pattern sleeves as shov~m or as required. (J) -Shop tests, inspection, reports and anal~-sis of tests of samples fc?° aJ L mai~erials shall be furnished uy the Contractor. Con- tractor shall 1'•.u~n_ sh ~,ngincer with a list of inspected and rnurioered pipe and fittia s ~~ (K) - 13i:tu?nast•i c coating shat-1 be applied on the exteri or of all cast iron pipe, fittings and. folloy+rer rings ir. accordance with Ao:t.':.A. specifications . (NI) - A].1 materials furnished b~ the contractor shall be delivered and distributed at the site by the contractor. Cast-iron pipe, fittings, - 2