Work Procedure for External Plastering
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1. Objective:
This work procedure narrates the guidelines to be adopted for External Plaster works 20mm thick in 2 coats under Civil4M Office Project
2. Applicability:
This procedure is applicable to the External Plaster work in areas as shown on drawing.
3. Reference Document:
BOQ.
Standard Specifications.
Drawings
4. Responsibility:
The Project Manager shall be responsible for the overall implementation of this procedure.
5. Safety Precautions:
Ensure scaffolding is adequately braced with the permanent structure after erection.
Ensure that work area is well illuminated during work.
Ensure that material handling shall be done in proper manner.
Use of PPE’s like safety belt, safety goggles, hand gloves, helmet and gumboots.
6. Material’s, Equipment’s and Tools used:
PSC Cement, screened river sand, water, 10 mm aggregates, Integral waterproofing compound (IWC) 100 to 150 ml. per 50 kg cement for 1st coat, wire brush or scouring tool, hacking tool, G.I. tray, 35 lit. box, plumb bob, right angle, masons trowel, aluminum straight edge and chicken mesh and nails.
7. Procedure:
Surface where plastering is to done shall be thoroughly cleaned with wire brush and made free from slurry droppings, dust, grease and loose material and tie holes shall be plugged.
All RCC members should be hacked using hacking tool 50 to 70 mm C/C.
Fix in position level pads at spacing of not more than one length of straight edge for entire surface to be plastered and keep 150 mm from corners.
Check level pads for thickness, if thickness is more do carry out make up coat, and scratch surface rough to receive plaster. If thickness is less carry out chipping, so that minimum thickness of plaster is as specified.
Left out joints and gaps between block work and RCC member should be filled with 10 mm aggregates and mortar.
Fix in position chicken mesh 200 mm width in joints, equally spaced on block work and RCC.
Wet the surface one hour before starting of plaster.
Plastering shall commence from top and worked downwards to floor.
IWC liquid waterproofing admixture should be added to mixing water 100 to 150 ml. per bag of cement for first 12 mm coat.
Mortar shall be in proportion (1:4) CM, mix dry sand and cement thoroughly before adding water, use tray for mixing. Add water to portion of dry mix only to be consumed within next 2 hrs.
Throw the mortar for area coverable by straight edge, both vertically and horizontally in one stretch.
Do level the surface using straight edge.
Float the surface and finish as per required thickness for entire area in stages and check for plumb and level.
Provide first coat of 12 mm thk. With cement mortar (1:4) and waterproofing admixture. Make surface rough to receive second coat and Curing shall be done for 3 days.
Provide second coat of 8 mm thk. With cement mortar (1:4). Ensure that stages, in plastering work are not apparently visible.
Curing to be done for 7 days.
8. Inspection Records:
CHECK LIST
This SOP (Standard Operating Procedure) / Work Procedure is attached herewith.
attachment snapshot
1. Objective:
This work procedure narrates the guidelines to be adopted for External Plaster works 20mm thick in 2 coats under Civil4M Office Project
2. Applicability:
This procedure is applicable to the External Plaster work in areas as shown on drawing.
3. Reference Document:
BOQ.
Standard Specifications.
Drawings
4. Responsibility:
The Project Manager shall be responsible for the overall implementation of this procedure.
5. Safety Precautions:
Ensure scaffolding is adequately braced with the permanent structure after erection.
Ensure that work area is well illuminated during work.
Ensure that material handling shall be done in proper manner.
Use of PPE’s like safety belt, safety goggles, hand gloves, helmet and gumboots.
6. Material’s, Equipment’s and Tools used:
PSC Cement, screened river sand, water, 10 mm aggregates, Integral waterproofing compound (IWC) 100 to 150 ml. per 50 kg cement for 1st coat, wire brush or scouring tool, hacking tool, G.I. tray, 35 lit. box, plumb bob, right angle, masons trowel, aluminum straight edge and chicken mesh and nails.
7. Procedure:
Surface where plastering is to done shall be thoroughly cleaned with wire brush and made free from slurry droppings, dust, grease and loose material and tie holes shall be plugged.
All RCC members should be hacked using hacking tool 50 to 70 mm C/C.
Fix in position level pads at spacing of not more than one length of straight edge for entire surface to be plastered and keep 150 mm from corners.
Check level pads for thickness, if thickness is more do carry out make up coat, and scratch surface rough to receive plaster. If thickness is less carry out chipping, so that minimum thickness of plaster is as specified.
Left out joints and gaps between block work and RCC member should be filled with 10 mm aggregates and mortar.
Fix in position chicken mesh 200 mm width in joints, equally spaced on block work and RCC.
Wet the surface one hour before starting of plaster.
Plastering shall commence from top and worked downwards to floor.
IWC liquid waterproofing admixture should be added to mixing water 100 to 150 ml. per bag of cement for first 12 mm coat.
Mortar shall be in proportion (1:4) CM, mix dry sand and cement thoroughly before adding water, use tray for mixing. Add water to portion of dry mix only to be consumed within next 2 hrs.
Throw the mortar for area coverable by straight edge, both vertically and horizontally in one stretch.
Do level the surface using straight edge.
Float the surface and finish as per required thickness for entire area in stages and check for plumb and level.
Provide first coat of 12 mm thk. With cement mortar (1:4) and waterproofing admixture. Make surface rough to receive second coat and Curing shall be done for 3 days.
Provide second coat of 8 mm thk. With cement mortar (1:4). Ensure that stages, in plastering work are not apparently visible.
Curing to be done for 7 days.
8. Inspection Records:
CHECK LIST
This SOP (Standard Operating Procedure) / Work Procedure is attached herewith.
