As Per Indian Guidelines Only.
Clear cover to main reinforcement in
Footings : 50 mm
Raft foundation Top : 50 mm
Raft foundation Bottom/ sides : 75 mm
Strap Beam : 50 mm
Grade Slab : 20 mm
Column : 40 mm (d>12mm) 25 mm (d= 12mm)
Shear Wall : 25 mm
Beams : 25 mm
Slabs : 15 mm or not less than diameter of the bar.
Flat Slab : 20 mm
Staircase : 15 mm
Retaining Wall on Earth : 20/ 25 mm
Water retaining structures : 20 / 30 mm
Sunshade (Chajja) : 25 mm
Hook for stirrups is 9D for one side
No. of stirrups = (clear span/Spanning) + 1
For Cantilever anchorage length for main steel is 69D
“L” for column main rod in footing is minimum of 300mm
Chairs of minimum 12 mm diameter bars should be used.
Minimum diameter of dowel bars should be 12 mm
Lap slices should not be used for bar larger than 36 mm.
In steel reinforcement binding wire required is 8 kg per MT.
Lapping is not allowed for the bars having diameters more than 36 mm.
Minimum number of bars for a square column are 4 and for circular column are 6.
Longitudinal reinforcement should not be less than 0.8% and more than 6% of gross C/S.
Weight of rod per meter length = d2/162 where d is the diameter in mm
All reinforcement shall be free from mill scales, loose rust & coats of paints, oil or any other substances.
Main bars in the slabs shall not be less than 8 mm (HYSD) or 10 mm (Plain bars) and the distributors not less than 8 mm and not more than 1/8 of slab thickness.
In case of spacing of bars
Provide the diameter of the bar, if the diameter of the bar are equal.
Provide the diameter of the larger bar, if the diameter are unequal.
5mm more than the nominal maximum size of the coarse aggregate.
Things Site Engineers Must Know
Check out the Unit Weights and Conversion which will be required on construction site here
We at engineeringcivil.com are thankful to Er Vikrant for submitting this construction site check list which is of great use to all civil engineers.
If you have a query, you can ask a question here.
i want to simple calculation formula for changing the dia of bar
hello,. can i ask how long is the minimum or maximum lap on stump and column?, thank you
holow buddies,am having the kind of confusion in rcc structure steel fixing.in that frm the given layout how can I predict myself which 1 type of steel bar should lay first for initiate the structure and further completion.how to get the
knowledge in that kind of rcc steel fixing works..give me some guidelines..
what the minimum nd maximum percetage of steel in column nd beam,slab….plz tell me guys
0-4% for Slab, 4-8% for beam, 8-12% for footing and 12-16% for column. the percentage is calculated in unit weight of steel i.e 7850. The result, which is calculated in this is for 1 m3 of concrete.
0.12% for slab & footing in case of deformed bars, 0.2% to 4% for beams, 0.8% to 6% for columns
it should be 0.6 to 8% of the column or beam or slab.
Why we not use bar in center of column
How may laps permitted in main and cross bars in a column footing.
Nice work.. Keep it up..!!
Can we Have 1.95m length of cantilever slabs on both side supporting by a beam with 8mm dia TMT bars @150mm C/C both sides (top and bottom).Please clarify.
plz tell me how i will find the cut length of steel in circular slab
U can try frm auto cadd I’n cutting length of circular slab.
what is spaceing in chair rod in rebar specification
how to calculate the steel rod diameter required for RCC beams
in a given drawing of steel reinforcement how to find out the main bars and distribution rods
in above notes there is point that Lapping is not allowed for the bars having diameters more than 36 mm. what does it mean i cannot understand this because every where lapping is must in rebar.
Because u cannot lap such a bigger dia bars, we can use anchorage bolts to lap them.
It should be welded befor going to making a joint
You can also use welding in this case
if we provide more laps in longitudinal reinforcement of deck slab then is it a problem?
in footing design main reinforcement or distributer steel which lies on bottom
Exactly where overlapping is taken for BEAM , COLUMNS, SLABS.
If the plain bar are used , the area of distribution reinforcement in slab should not be less then 0.12%, 0.15%, 0.18% 0.21, of the gross area of concrete plsss tell
Dear sir Please Explain Why We add one Extra Bar in Calculation Of BBS
Me only want it if u know then tell me
above 36mm no need lap then what to do ?