Browse Forums General Discussion 1 Jul 14, 2016 5:32 pm Hi, Just wondering the what N25 is on steel reinforcing, is this suitable for medium to heavy loads? Re: Reinforced Concrete 3Jul 15, 2016 8:04 am Check your engineering Notes -Normal Concrete..N25 Strength Mpa: 20 Aggregate mm: 80 Slump mm eg N (25:20:80) -Nominal Steel Reinforcement - N- Denotes Deformed bars D500N: N24-24mm diam. rebars Note (1) N24 measured Nominal X-Section Area (452 mm2) equals 4-N12 Nominal X-section Area (4x 113mm2) approx A common mistake I see on site where Steel fixers substitute missing N24- bars for 2 x N12 bars...WRONG THE X-SECTIONAL AREAS AREN'T THE SAME Tables here http://www.arcreo.com.au/reinforcing-bar Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs To my understanding early saw cuts are to control shrinkage cracks, so doing them now would be pointless. Control joints may reduce ugly cracking during periods of soil… 3 9826 Hi all I need a guidance on how far I need to space expansion joints in the concrete driveway and its type (keyway/foam.) Contraction joints are at 3m max for a 125 slab. Thanks 0 10921 |