C ONN E C T I ON D I M E N S I ON S B E A M TYPE I MOD. TYPE II TYPE III TYPE IV D I A P H R AG M MC18X42.7 MC18X42.7 MC18X42.7 A B C 1'-6" 1'-6" 1'-6" 1'-1" 1'-1" 1'-1" D 4" 4" 4" 7" 1'-0" 10" 3" 4" 5" 54" MOD. B.T. C10X20 C12X25 S E C T I ON A - A > Beam (Typ.) > Diaphragm (see Table) Channel Diaphragm A A Hole (Typ.) > • " Dia. ELE VA T I ON D I A P H R AG M D ET A I L S S TEEL I N TE R M E D I A TE C O R N E R C L I P C HANN EL C ONN E C T I ON L D ET A I L S P W E B F A C E D I A P H R AG M F A C E (For 18" Channel) D I A P H R AG M F A C E (Typ.) Slotted Hole • " x 1„ " 5" C HANN EL E ND D ET A I L 18 " C HANN EL 10 " O R 12 " C HANN EL 5" 4" 5" 4" (AASHTO Type III beam shown) Connection (Typ.) • " Bent Channel Hole (Typ.) > 1ˆ " Dia. • " Thick • " Thick Hole (Typ.) > 1ˆ " Dia. Note: Use 3• " Washer over all • " x 2‰ " holes. Use 4" Washer over all 1ˆ " x 2• " holes. Washer and DTI (Typ.) Hex Nut, 3• " Washer, Hardened ‡ " Dia. H.S. Bolt with Heavy P L • " x 6" Web P L P L Washer and Web (Typ.) Hex Nut, Hardened Washer, 4" 1" Dia. H.S. Bolt with Heavy P L Slotted Hole (Typ.) • " x 2‰ " Slotted Hole (Typ.) • " x 2‰ " Slotted Hole (Typ.) • " x 1„ " Slotted Hole (Typ.) 1ˆ " x 2• " Connection • " Bent Channel Washer and DTI (Typ.) Hex Nut, 3• " Washer, Hardened ‡ " Dia. H.S. Bolt with Heavy P L P L P L P L (For 10" or 12" Channel) P L P L 1" 1" 2• " 2•" 3• " D 2•" 6" A 8" C B C A 3• " 4• " 8" C 2 Sp. @ B C A 3• " 4• " C B C C B C C 2 Sp. @ B C C 2 Sp. @ B C 2" 2" 4" 4" 2" 2" A D 6" 3" 2•" (Typ.) 1ƒ" 1ƒ" 3• " 3•" 1ƒ " 1ƒ " > Beam (Typ.) Dia. Hole (Typ.) H.S. Bolt & 2" > 1" Dia. Connection (Typ.) • " Bent Channel P L P L P L P L P L Washer and Web Hardened Washer, 4" with Heavy Hex Nut, 1" Dia. H.S. Bolt P L B B 8 " 6" S E C T I ON B - B • " Thick P L P L P L P L L W A S H E R D ET A I L P W E B L D ET A I L P Bent • " x 8" x 6" Bent • " x 8" x 6" MRW JDC Washers Nut, Hardened Washer, and 2-4" 1" Dia. H.S. Bolt with Heavy Hex 1" Min. Rad. B B i n t h e p l a n s e t . D r a w i ng N o . 704 - 05b (f o r c h a nn e l d i a ph r a g m s ) o r 704 - 05d (f o r c r o ss fr a m e s ) 704 - 05 c (f o r c r o ss fr a m e s ) i n t h e p l a n s e t . F o r no s k e w o r s k e w s 20 ° , i n c l ud e F o r s k e w s 0 ° a nd 20 ° , i n c l ud e D r a w i ng N o . 704 - 05 a (f o r c h a nn e l d i a ph r a g m s ) o r - D e s i gn e r t o i npu t d i m e n s i on o r s k e w a ng l e . r e du c i ng a d j u s t m e n t p r ov i d e d by u s e o f ov e r s i ze d a nd s l o tt e d ho l e s . D e t a il l o ca ti on s o f bo lt ho l e s i n c h a nn e l t o acc oun t f o r d ec k c r o ss s l op e w it hou t d r a w i ng s f o r c on s i s t e n c y . p r e s t r e ss i ng s t r a nd s a nd r e i n f o r c i ng s t ee l . R e v i s e p r e s t r e ss e d c on c r e t e b ea m C oo r d i n a t e l o ca ti on o f bo lt ho l e s i n t h e b ea m w e b s w it h t h e l o ca ti on s o f t h e a c r o w n po i n t , d e t a il d i a ph r a g m ho r i z on t a l . D e t a il d i a ph r a g m s p a r a ll e l t o t h e d ec k c r o ss s l op e . I n a ny b a y w h e r e t h e d ec k h a s o f t h e s p a n ( a t t h e bo tt o m f l a ng e o f t h e b ea m ) i s b e l o w e l e v a ti on 20 M S L . D o no t u s e s t ee l i n t e r m e d i a t e d i a ph r a g m s i n l o ca ti on s w h e r e t h e l o w e s t e l e v a ti on E ng i n ee r w h e n u s e d . A ll d r a w i ng s m u s t b e s i gn e d a nd s ea l e d by a S ou t h C a r o li n a R e g i s t e r e d P r o f e ss i on a l c h ec k e d by t h e U s e r ' s E ng i n ee r t o e n s u r e d e s i gn i s a d e qu a t e f o r t h e i n t e nd e d u s e . s p ec i f i c . A ny u s e o f t h i s d e s i gn a nd d r a w i ng , i n c l ud i ng d i m e n s i on s , m u s t b e T h i s d r a w i ng i s f u r n i s h e d f o r i n f o r m a ti on on l y . A ll d i m e n s i on s s ho w n a r e s h ee t N o t e s t o D e s i gn e r : Printed: Tuesday, September 22, 2020 11:04:02 AM S OU T H C A R O L I NA D E P A R T M E N T O F T R AN SP O R T A T I ON R E V . R E V . R E V . R E V I E WE D QUAN . D R . D E S . B Y C HK . DA TE XX SAN 12-11 SteelIntDia.dgn NO . S H E ET XXXXXXX-BXX C OUN T Y R OU T E XXXXXXXX XXXXXX BR I D G E P L AN SI D DRAWING NO. 704-05a assemblies in the unit price bid for prestressed concrete beams. Include all cost of furnishing and installing steel intermediate diaphragm structure. Leave steel intermediate diaphragms in place as a permanent part of the completed and tightened in each span where deck concrete will be placed during the pour. Do not place deck slab until all intermediate diaphragms are properly installed assembly to verify proper tensioning. web. Install all other bolts using a DTI and hardened washer with each bolt additional 1/4 turn. Peen threads on all bolts installed through the beam Tension bolts through the beam web to be snug tight and then turn the bolts an leave pipe in place after forms are removed. Form bolt holes in prestressed concrete beams using 2" inside diameter pipe and finish on hardware. galvanized finish in accordance with ASTM A 780. Use paint method to repair After installation of steel diaphragms, repair all damaged areas of the Standard Specifications. Submit shop plans for steel intermediate diaphragms in accordance with the substituted for mechanical galvanizing. For the 1" bolt assemblies, galvanizing in accordance with AASHTO M 232 may be and direct tension indicators (DTI's) in accordance with ASTM B 695 Class 50. (Type 1) bolts. Mechanically galvanize bolts, heavy hex nuts, hardened washers, Make all bolted diaphragm connections with ‡ " or 1" ASTM F3125, Grade A325 connections by means of hand-wire brushing. Power-wire brushing is not permitted. galvanizing after fabrication is completed. Roughen faying surfaces of bolted including connection and washers in accordance with AASHTO M 111. Perform requirements of AASHTO M 270, Grade 50. Galvanize all components of diaphragms Provide structural steel sections, plates, and plate washers that conform to the Notes: LEM 8-16 HL Galv. Class PCW HL 09-20 ASTM F3125
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A A ELEVATION PL WASHER DETAILinfo2.scdot.org/structuraldesign/Bridge Drawings/SteelIntDia.pdfPL L L PL PL Washer and tWeb Hardened Washer, 4" with Heavy iHex Nut, 1" Dia. H.S. oBolt
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