RAZON ENGINEERING COMPANY PRIVATE LIMITED

660, Taboot Street, P.O.Box 49, Pune 411001 [Inida]

Ph: 6130791 Telefax: 020-6130017

Gram: RAZON, E-mail: razonengg@usa.net ,

Website: www.razonengg.com

COST ANALYSIS OF SUPER PLASTER

If Super Plaster is not used:

Mortar consumption per 100 sq. ft. plaster area. Plaster thickness 20mm + Surface Preparation 25%

Final Plaster thickness 25mm i.e. 1 inch. Quantity of mortar required = 100 sq.ft. X0.08 ft. = 8 cubic feet.

+ 25 % Dry mortar requirement i.e. 8 X 1.25 = 10 cubic ft    

Cement  sand ratio 1 : 5.  Therefore Cement required = 10/6 X 1 = 1.67 cubic ft

and required = 10 – 1.67 = 8.33 cubic ft.

Dry cement is used by mason if throwback is high. Dry Cement reduces workability, increases shrinkage, & cracks In plaster.

60% or more of dry cement is used if throw back is high of which Dhar [Edges]. 20% is for dhar & 40% for plain surface.

Total Cement required = 1.67 X 1.60 = 2.672 cubic ft. 1.235 cubic ft. – 50 kgs – 1 bag cement – Rs 150-00

Cost of Cement used 2.672 /1.235 X 150 = Rs. 324-53

Cost of Sand Rs. 2500.00 per 175 cubic ft. [truck load]  i.e. Rs. 14.29 per cubic ft.

Wastage of sand by sieving = Rs. 14.29 X 1.25 = Rs. 17.86

Quantity of sand used = 8.33 cubic ft. Cost of 8.33 cubic ft. Sand @ Rs. 17.86 per Cubic ft. = Rs. 148.77  

Total Labour & mason Cost per brass = Rs. 425 / 100 sq.ft

Total Plastering cost inclusive of labour + Material

                          Cement Cost         :  Rs. 324.53

                          Cost of Sand          : Rs. 148.77

                           [ + ] Labour            : Rs. 425.00 

                                                           ----------------

                                                            Rs. 898.30    per 100 sq.ft.

                                                            =========

If Super Plaster is used:

The total Quantity of Cement required is 1.67 X 1.20 = 2.00

Since only 20 % Cement for dhar is required & no dry cement is used for plastering.

Cost of cement used in Plastering  =  2.00  sq. ft.

                                                        =  2.00     = 1.62 bags cement

                                                            1.235

Cost of 1.62 bags of cement     = 1.62 X 150     = Rs.  243.00

Cost of 8.33 sq. ft. sieved sand = 8.33 X 17.86  = Rs.  148.77

Cost of Super Plaster @ Rs. 32/- per 200 litre barrel.

Dosage 150 – 200 ml.     200 ml per bag cement   = 1.62 X 0.200  =  0.324 ml

Cost of 0.324 ml Super Plaster @ Rs. 32 per litre = 0.324 X 32 = Rs.10.36

Labour for plastering = Rs.425/- per brass.

Since throw back is reduced, dry cement consumption is reduced, & hence workability is increased, mason out put is increased by 15-20%

Labour cost for plastering if Super Plaster is used = 425 X  0.85 = 361.25

Total Cost of Plaster [material + labour + Cost of Super Plaster]

Cement Cost           Rs. 243-00

Sand Cost               Rs. 148-00

Super Plaster          Rs.   10-36

Labour                     Rs.  361.25

                                ----------------       

                                Rs.  762-61

                                =========

Total Saving in plastering Cost if Super Plaster is used = Rs. 135.69 per brass

ADVANTAGES  WITH SUPER PLASTER

1.       Very good water proof plaster.

2.       Low throwback-hence dry cement saving.

3.       Low throwback-hence greater mason output.

4.       Low throw-back-very big advantage for ceiling plaster.

5.       Plaster continuous to remain complete hydration, hence very tough plaster.

6.       Cracks population greatly reduced, hence ideal for Internal & external plaster.

[Super Plaster must not be added to sanla for internal plaster]