Repository: UIHistories Project: Planning Report - Sidewalks 1928 [PAGE 19]

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crossing on the Sixth S t r e e t walk where "Lumnite" cement must be used for slab* See A r t i c l e 46. l a a l l cases except aa mentioned above, i t w i l l not be s a t i s f a c t o r y to change branaa of cement i n any one aeotlon of walk. Both fine and coeres aggregate t o be accurately measured for each batch in boxes of known volume or l a c a l i b r a t e d wheel-barrowe. 'Shovel measure 9 w i l l not be permitted. Concrete s h a l l be mixed i n a mechanical batch mixer for l£ minutes a f t e r a l l aggregated are in the mixer, owing the miniawm amount of water t o obtain a workable mix. Thickneaa of concrete aa shown on p r o f i l e a .

Iherever walk8 otssa or are b u i l t over d r a i n a g e , steady water or conduit l i n e e , or over f i l l , t h e r e s h a l l be imbedded in the concrete - 8 inches from the bottom of the s l a b , expanded metal or e l e c t r i c welded road mesh reinforcement weighing not leas than 0.44# per eq, f t . Road meah as callea for above w i l l be required in road and service crossings aa shown on p l a n s , aa well aa aver service l i n e a am d i r e c t e d . This contractor w i l l Include 1,000 eq. f t . of mesh l a addition t o t h a t required for s e r v i c e drivea aa a p a r t of t h i s oontraot. Any a d d i t i o n a l amount required w i l l be furnished and i n s t a l l e d a t an a d d i t i o n a l cost per square foot aa s t a t e d by t h i s contractor In hia proposal. In determining the exact amount of t h i s extra reinforcement used, aa allowance of two inchea w i l l be made for l a p s . The Supervising Architect w i l l d e a l g n a t s where t h i s mesh i s t o go and i t must be measured before i t l a covered up* 44g^AMSloa JQiam*

ix^ansion j o i n t s 1/f* x 6* s h a l l be need across the walk a t I n t e r v a l s of about 90 f t . , a l s o next t o a l l crossings* s t e p s , walk i n t e r s e o t l o n e and p l a t f o r m s , and aa i n d i c a t e d .

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