Site Execution

 WATERPROOFING OF TOILET AREA:- Surface preparation waterproofing work:- • All surface area should be cleaned up to visible hair cracks / aggregate  texture, cleaning of  RCC member should be done by hacking tool, wire  brush, wire grinder & air blower etc. • All visible cracks & construction joints should be sealed with cement  mortar with additive Conplast WL after making V groove. • All clean & treated area should test for water tightness by flooding water for  minimum 75 mm head for 48 hours. All wet spots, water leak & honeycomb areas should be mark for treatment. It shall be treated with injection grouting with Cebex 100 as additive to be added in grout cement slurry @ dosage of 225 gm. of packet per bag of cement or micro concrete. Waterproofing Treatment:- • Ensure the surface must be damped before application of 2 coat of GS flexi 201 by brush. The first coat shall be applied at the rate 1 kg /m2 with proper brush application ensuri...

  GROUTING PROCEDURE OF RETAINING WALL:-   Construction & Honeycomb Treatment:-        Chasing open the joints in ‘’V’’ shape/ ‘’U’’ shape groove of required width and depth as per site conditions. Chasing open the junction of RCC and the masonry surfaces, sealing the groove with repair mortar C:M with Conplast WL equivalent @ 150 ml per bag of cement etc.    The minimum dosage is 125ml and the maximum is 200ml per 50kgs of cement. If maximum dosage is used a minimum of 15% water should be reduced to ensure no loss in strength. The required quantity of Conplast WL is measured and stir into the first or second bucket of water. Conplast WL water mixture shall be added to the concrete or mortar and mixed thoroughly. Mixing shall be continued and further water shall be added until the required work ability is obtained. Grouting:- Cementious Grout:- ·     Providing and applying neat cement slurry grouting (Cebex 100) includ...

Causes of Dampness in buildings:- Dampness generally caused by: - (a) Under Ground water (b) Rain water and (c) Leakages from plumbing pipes (a) Dampness due to Under Ground  Water:   Buildings are constructed on soils. Soil holds water for a long time. Sometimes water level may rise and come in contact with foundation. Due to capillary action moisture from ground rises into foundation, floor and even in wall. (b) Rain Water:  Entering in the building components due to various reasons. (i) From wall top:  If top of wall is not protected with impervious course like concrete, water can enter the wall and keep it damp for a long time. (ii) From face of external walls:  Splashing of outer wall by rain results into moisture entering the wall. Poor plaster coat is the main source of this type of dampness.  (iii) Improper fixing of downtake pipes:  If downtake pipes from roof are not properly fixed, a thin layer of water stagnates near the mo...