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FIRE STOPPING

A firestopping is a fire protection system made of various components used to seal openings and joints in the fire-resistance rated wall and/or floor
assemblies. Firestopping are designed to restore the fire-resistance ratings of the wall and/or floor assemblies by impeding the spread of fire by filling the openings with fire-resistant materials. Unprotected openings in fire separations cancel out the fire-resistance ratings of the fire separations, allowing the spread of fire, usually past the limits of the fire safety plan of a building.
Firestopping components include intumescents, cementitious mortars, silicone, firestop pillows, mineral fibers, and rubber compounds.
Firestopping should be maintained in accordance with the listing, approval use, and compliance. Construction documentation sometimes includes an inventory of all firestopping in a building, with drawings indicating the location and the certification listings of each firestop. Using this, a building owner can meet the requirements of the fire code related to fire barriers during the period of building occupation. Otherwise, improper repairs may result, which would violate the fire code, and could allow a fire to travel between areas intended by code to be separated during a fire event.
Firestopping components include intumescents, cementitious mortars, silicone, firestop pillows, mineral fibers, and rubber compounds.

Opening Types

  • Electrical through-penetrations
  • Mechanical through-penetrations
  • Structural through-penetrations
  • Unpenetrated openings (openings for future use for example)
  • Re-entries of existing firestops
  • Control or sway joints within a fire-resistance rated wall or floor assemblies
  • Junctions between the fire-resistance rated wall or floor assemblies
  • "Head-of-wall" (HOW) joints, where non-load bearing wall assemblies meet floor assemblies
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FIRE PROOFING

Fireproofing,a passive fire protection measure, refers to the act of making materials or structures more resistant to fire, or to those materials themselves, or the act of applying such materials. Applying a certification listed fireproofing system to certain structures allows these to have a fire-resistance rating. The term fireproof does not necessarily mean that an item cannot ever burn, it relates to measured performance under specific conditions of testing and evaluation. Fireproofing does not allow treated items to be entirely unaffected by any fire, as conventional materials are not immune to the effects of fire at a sufficient intensity and/or duration.
Passive Fire Protection measures are intended to contain a fire in the fire compartment of origin, thus limiting the spread of fire and smoke for a limited period of time, as determined the local building code and fire code. Passive fire protection measures, such as steel structures , fire stops, fire walls, and fire doors, are tested to determine the fire resistance rating of the final assembly, usually expressed in terms of hours of fire resistance (e.g. 30 mins,60 mins, 90 mins,120 mins). A certification listing provides the limitations of the rating.
An Intumescent is a substance that swells as a result of heat exposure, thus increasing in volume and decreasing in density. Intumescents are typically used in passive fire protection.
As the name suggests, passive fire protection (PFP) remains silent in your coating system till the eventuality of a fire.
There are mainly two types of PFP:
a) Vermiculite fire protection
b) Intumescent fire protection
vermiculite fire protection, the structural steel members are covered with vermiculite materials, mostly a very thick layer. This is a cheaper option as compared to an Intumescent one, but is very crude and aesthetically unpleasant. Moreover if the environment is corrosive in nature, then the vermiculite option is not advisable, as there is the possibility of water seeping into it (because of the porous nature of vermiculite), and there it is difficult to monitor for corrosion.
Intumescent fireproofing is a layer of paint which is applied along with the coating system on the structural steel members. The thickness of this Intumescent coating is dependent on the steel section used. For calculation of DFT (dry film thickness) a factor called Hp/A(heated perimeter divided by cross-sectional area), referred to as "section factor" and expressed in m-1, is used. Intumescent coatings are applied as an intermediate coat in a coating system (primer, intermediate, and top/finish coat). Because of the relatively low thickness of this Intumescent coating (usually in the 350- to 700-micrometer range),nice finish, and anti-corrosive nature, Intumescent coatings are preferred aesthetically and performance-wise.
It should be noted that in the eventuality of a fire, the steel structure will eventually collapse once the steel attains the critical core temperature (around 550 degrees Celsius or 850 degrees Fahrenheit). The PFP system will only delay this by creating a layer of char between the steel and fire. Depending upon the requirement, PFP systems can provide fire ratings in excess of 120 minutes. PFP systems are highly recommended in infrastructure projects as they can save lives and property.

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CORING & CUTTING

RISE & SHINE ENGINEERING SERVICES. Qatar is a HILTI approved diamond specialist service company providing various solutions in reinforced concrete for the construction industry in the Qatar,U.A.E,K.S.A,India.
We Provide the following services:

  1. Core drilling from 25 mm to 60 mm diameter.
  2. Wall saving and wire sawing in reinforced concrete.
  3. Cutting openings / modifications for various depths and dimensions.
  4. Chemical anchoring.
  5. Concrete demolition works.
  6. We are currently working with many leading projects & contractors in above-operating countries routinely providing cores and opening to accommodate the installation of MEP services and for various openings on fast track projects.All our Staff is well trained by HILTI who is the world's leading manufacturer of sawing coring and drilling equipments. With the technical support of HILTI,We have always achieved success in delivering as committed.
Types of coring & cutting are mentioned below:
CONCRETE WALL SAWING(HILTI-DP-LP 32)
  1. Breaches and opening for windows and doors etc.
  2. Concrete demolition and remedial work.
  3. Cutting to a depth of 73 cm
CONCRETE WIRE SAWING(HILTI-DS-WSS 30)Wet
  1. Cutting large opening of all kinds in thick structural components.
  2. Technical demolition ,cutting away.
  3. Foundation,chimneys supports,etc.
  4. Sawing heavily-reinforced concrete,thick masonry etc.
  5. Underwater applications,low noise sawing.
CONCRETE CORING(HILTI-DD 130/DD 200/DD 500)
  1. Wet drilling in reinforced concrete from 25 mm to 600 mm diameter.
  2. Stitch drilling for breaches.
  3. Openings for MEP services.
  4. Penetration for ducts,pipes,& cables.
  5. Large diameter coring,manholes / foundations.
CHEMICAL ANCHORING(RE-BARRING) & PULLOUT TEST(HILTI HIT RE -500)
  1. Highest loads with rebar in a wide range of diameter (8 to 40 mm)
  2. Optimum bonding time 20 minutes
  3. Especially suitable for rebar applications,anchor roads,profiles,sections,round bars,etc.