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Covering the rcc roof slabs

 
This forum is locked: you cannot post, reply to, or edit topics.This topic is locked: you cannot edit posts or make replies.    www.sefindia.org Forum Index -> Past Discussions Year 2003
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Rabinder Shekher
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Joined: 26 Jan 2003
Posts: 265
Location: Katra Vaishno Devi J&K

PostPosted: Fri Jul 18, 2003 1:38 am    Post subject: Covering the rcc roof slabs Reply with quote

Dear Engineers,
The RCC slabs are covered with 100mm thick Mud Pushka with Gover
leaping and tiles grouted with cement morter 1:3 mix.Sone times we
treat the rcc slab surface with water profing before laying
mud-pushka,Is there any other method available to avoid this
general practice since in rainy seasons this delays the completion
of building?
with regards,
rabinder Shekher
___________________________________________________


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suraj
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Joined: 17 Apr 2008
Posts: 1981
Location: NCR Faridabad, E mail suraj_engineer@yahoo.co.uk

PostPosted: Fri Jul 18, 2003 6:50 am    Post subject: Covering the rcc roof slabs Reply with quote

RCC Slab Roof Coverings

It is possible to apply another system for the roof coverings as Roofing

Scabble the whole surface so that all laitance is removed

Ensure that all the services bases or plinths have been constructed.

Distribute the surface into bays & provide the whole surface a slope of 1.25 % so that the storm water discharge/drainage is flown to the outlets.

The alternate bays should be formed not to exceed one bay 20 m^2 or to engineer’s convenience

Pour the bays with the cement mortar 1:6 semidry or 1:2:4 concrete using 12mm nominal size aggregate

Pour the remaining alternate bays next days after proper cleaning the sides/ joints etc

After due curing & drying the whole surface of the roof, apply water proofing in one go.

Test the waterproofing by filling the whole surface for 72 hours & plugging all the outlets so that no water is leaked out

Visually observe the leakage if any & if so, apply remedial treatment according to the specialist material supplier’s/ material’s manufacture’s instructions.

Re-test if so required otherwise continue the work by draining out the filled water & allowing the waterproofing surface dry out.

Fix into place 50 mm extruded polystyrene on the waterproofed surface

Spread aggregate on to the polystyrene in the slab is inaccessible

Fix concrete tiles 500x500 mm on to the polystyrene if the surface is accessible

Grout the tiles joints

Similarly take care of waterproofing skirting insertion into the chases etc & use Aluminum flashing over concrete skirting.



Eng Suraj










su_shu1@rediffmail.com wrote:Dear Engineers,
The RCC slabs are covered with 100mm thick Mud Pushka with Gover
leaping and tiles grouted with cement morter 1:3 mix.Sone times we
treat the rcc slab surface with water profing before laying
mud-pushka,Is there any other method available to avoid this
general practice since in rainy seasons this delays the completion
of building?
with regards,
rabinder Shekher
___________________________________________________


Click here now:

Posted via Email
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View user's profile Send private message Visit poster's website
suraj
General Sponsor
General Sponsor


Joined: 17 Apr 2008
Posts: 1981
Location: NCR Faridabad, E mail suraj_engineer@yahoo.co.uk

PostPosted: Fri Jul 18, 2003 6:50 am    Post subject: Covering the rcc roof slabs Reply with quote

RCC Slab Roof Coverings

It is possible to apply another system for the roof coverings as Roofing

Scabble the whole surface so that all laitance is removed

Ensure that all the services bases or plinths have been constructed.

Distribute the surface into bays & provide the whole surface a slope of 1.25 % so that the storm water discharge/drainage is flown to the outlets.

The alternate bays should be formed not to exceed one bay 20 m^2 or to engineer’s convenience

Pour the bays with the cement mortar 1:6 semidry or 1:2:4 concrete using 12mm nominal size aggregate

Pour the remaining alternate bays next days after proper cleaning the sides/ joints etc

After due curing & drying the whole surface of the roof, apply water proofing in one go.

Test the waterproofing by filling the whole surface for 72 hours & plugging all the outlets so that no water is leaked out

Visually observe the leakage if any & if so, apply remedial treatment according to the specialist material supplier’s/ material’s manufacture’s instructions.

Re-test if so required otherwise continue the work by draining out the filled water & allowing the waterproofing surface dry out.

Fix into place 50 mm extruded polystyrene on the waterproofed surface

Spread aggregate on to the polystyrene in the slab is inaccessible

Fix concrete tiles 500x500 mm on to the polystyrene if the surface is accessible

Grout the tiles joints

Similarly take care of waterproofing skirting insertion into the chases etc & use Aluminum flashing over concrete skirting.



Eng Suraj










su_shu1@rediffmail.com wrote:Dear Engineers,
The RCC slabs are covered with 100mm thick Mud Pushka with Gover
leaping and tiles grouted with cement morter 1:3 mix.Sone times we
treat the rcc slab surface with water profing before laying
mud-pushka,Is there any other method available to avoid this
general practice since in rainy seasons this delays the completion
of building?
with regards,
rabinder Shekher
___________________________________________________


Click here now:

Posted via Email
Back to top
View user's profile Send private message Visit poster's website
suraj
General Sponsor
General Sponsor


Joined: 17 Apr 2008
Posts: 1981
Location: NCR Faridabad, E mail suraj_engineer@yahoo.co.uk

PostPosted: Sat Jul 19, 2003 5:29 am    Post subject: Covering the rcc roof slabs Reply with quote

rccbuildings2@yahoo.co.uk wrote:
RCC Slab Roof Coverings (An alternative to mud phuska)

It is possible to apply another system for the roof coverings as Roofing that has been followed conventionally for important buildings.
Finish the works of rendering upto the required level on the parapet or wahtever finish specified.
Scabble the whole surface of RCC slab so that all laitance is removed & aggregate are exposed

Ensure that all the building services bases or plinths have been constructed.

Distribute the surface into bays & provide the whole surface a slope of 1.25 % so that the storm water discharge/drainage is flown to the outlets.

The alternate bays should be formed not to exceed one bay 20 m^2 or to engineer’s convenience

Pour the bays with the cement mortar 1:6 semidry or 1:2:4 concrete using 12mm nominal size aggregate (or pump fiber concrete into the whole roof surface without bays formations).

Pour the remaining alternate bays next days after proper cleaning the sides/ joints etc if no foam concrete is to be included.

After due curing of mortar or concrete & drying the whole surface of the roof, apply water proofing in one go.

Test the waterproofing by filling the whole surface for 72 hours & plugging all the outlets so that no water is leaked out

Visually observe the leakage if any & if so, apply remedial treatment according to the specialist material supplier’s/ material’s manufacture’s instructions.

Re-test if so required otherwise continue the work by draining out the filled water & allowing the waterproofing surface dry out.

Fix into place 50 mm extruded polystyrene supported on edge spacers on the waterproofed surface

Spread aggregate 50 mm in thickness on to the polystyrene if the slab is inaccessible or

Fix concrete tiles 500x500 x50mm on to the polystyrene if the surface is accessible

Grout seal the tiles joints

Similarly take care of waterproofing skirting insertion into the chases etc & use Aluminum flashing over concrete skirting.



Eng Suraj Singh PE










su_shu1@rediffmail.com wrote:Dear Engineers,
The RCC slabs are covered with 100mm thick Mud Pushka with Gover
leaping and tiles grouted with cement morter 1:3 mix.Sone times we
treat the rcc slab surface with water profing before laying
mud-pushka,Is there any other method available to avoid this
general practice since in rainy seasons this delays the completion
of building?
with regards,
rabinder Shekher
___________________________________________________


Click here now:












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suraj
General Sponsor
General Sponsor


Joined: 17 Apr 2008
Posts: 1981
Location: NCR Faridabad, E mail suraj_engineer@yahoo.co.uk

PostPosted: Sat Jul 19, 2003 5:43 am    Post subject: Covering the rcc roof slabs Reply with quote

rccbuildings2@yahoo.co.uk wrote:


rccbuildings2@yahoo.co.uk wrote:
RCC Slab Roof Coverings (An alternative to mud phuska)

It is possible to apply another system for the roof coverings as Roofing that has been followed conventionally for important buildings.

Finish the works of rendering upto the required level on the parapet or wahtever finish specified.

Scabble the whole surface of RCC slab so that all laitance is removed & aggregate are exposed

Ensure that all the building services bases or plinths have been constructed.

Distribute the surface into bays & provide the whole surface a slope of 1.25 % so that the storm water discharge/drainage is flown/disposed to the outlets & the minimum thickness of the fill be not less than 50mm at the outlet point.

The alternate bays should be formed not to exceed one bay 20 m^2 or to engineer’s convenience

Pour the bays with the cement mortar 1:6 semidry or 1:2:4 concrete using 12mm nominal size aggregate (or pump foam concrete into the whole roof surface without bays formations).

Pour the remaining alternate bays next days after proper cleaning the sides/ joints etc if no foam concrete is to be included.

After due curing of mortar or concrete & drying the whole surface of the roof, apply water proofing in one go.

Test the waterproofing by filling the whole surface for 72 hours & plugging all the outlets so that no water is leaked out

Visually observe the leakage if any & if so, apply remedial treatment according to the specialist material supplier’s/ material’s manufacture’s instructions.

Re-test if so required otherwise continue the work by draining out the filled water & allowing the waterproofing surface dry out.

Fix into place 50 mm extruded polystyrene tiles 600x600mm of density 32 kg/cum supported on edge spacers on the waterproofed surface

Spread aggregate 50 mm in thickness on to the polystyrene if the slab is inaccessible or

Fix concrete tiles 500x500x50mm on to the polystyrene if the surface is accessible

Grout/seal the tiles joints

Similarly take care of waterproofing skirting insertion into the chases etc & use Aluminum flashing over concrete skirting.



Eng Suraj Singh PE










su_shu1@rediffmail.com wrote:Dear Engineers,
The RCC slabs are covered with 100mm thick Mud Pushka with Gover
leaping and tiles grouted with cement morter 1:3 mix.Sone times we
treat the rcc slab surface with water profing before laying
mud-pushka,Is there any other method available to avoid this
general practice since in rainy seasons this delays the completion
of building?
with regards,
rabinder Shekher
___________________________________________________


Click here now:












---------------------------------
Want to chat instantly with your online friends? Get the FREE








---------------------------------
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Posted via Email
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View user's profile Send private message Visit poster's website
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