Checklist For Column Concreting
|Title: Checklist For Column Concreting.||Rev. , dated|
Building Location Date.
Grade of concrete= M Grade of steel =
|Sr. No.||Activity||Acceptance Criteria||Observation|
|Column starter.||Shall be free of honey combing, edge being not broken & laitance removed with coarse aggregate top exposed compulsorily.|
|Provision of Rebar (dia. & qty.), + dowels if
|As per Column schedule As per RCC Drg.
|Position of Rebar. (Lapping, spacing of
stirrups with 45 degree legs & master ring).
|As per General drawing. As per RCC Drg.
|Clear Cover of Rebar.||Shall be provided of 55mm & 40mm, for below ground & above ground respectively, with a + 5 mm tolerance.|
|Position of topmost stirrup of column.||Shall be placed at 40mm below concreting top.|
|Position of guide/master stirrup above
|Shall be provided at Min. 600mm & Max.
1000mm.from concrete top.
|Space of needle vibrator, insertion, for
|Shall be Min. 70mm gap to suit 60mm needle vibrator & Min 50mm gap to suit 40mm needle vibrator|
|Binding wire knots & tail||Shall not be in Clear cover zone.|
|Shuttering works||Soldiers shall be provided after every panel for column length more than 750mm. 1st tie rod shall be at 125mm from bottom. Window shall be provided for column height more than 1400mm. Wedge clips shall be at 150mmc/c. back to back angle Yokes shall be provided at each tie rod level. Raker props shall be supported on firm base.|
|Provision of Empty cement bag below
|No gap shall be seen, in space between shuttering
panel bottom & slab top.
|Starter/ Column dimension (width, length,
right angle, line & plumb).
|As per Drawing. Dwg No.__________
|Column top concreting level.||As per Drawing. Dwg No.__________
|Working platform.||Shall be supported on H frame with atleast 27” wide
|Chute (Supda) at window level & top level.||Shall be provided in 45 degrees slope with width of
minimum 300mm & to be provided in alternate
|Tools & materials for making cement slurry,
& trey for concreting
|2 G.I. buckets, 1 ltr. Cylinder,500 ml bottle for
plasticizer & rod for stirring
|Two nos. electrical vibrator, one no. petrol
vibrator & spare needle.
|Available near columns|
Note : All dwg numbers , to be referred should be filled in , before the Checklist is referred to , at
location , for Acceptance Criteria , by the Senior Engineer/Sector Engineer .
JR.ENGR/SITE ENGINEER: _______________
SENIOR/SECTOR ENGINEER: ______________
NB: Checklist, to be completed in all respects and signed with date by all concerned, as designated