Before Starting the Building Work Soil Test is Very Important One

SOIL– Safe Bearing Capacity of Soil  

a)     Plate Load Test (PLT) – IS 1888 – 1982 – The Modulus of subgrade reaction ( K) 12kg/cm = Mean Bearing Pressure (P) 1.5kg/cm² / Mean Settlement (0.125cm) not less than 0.025

b)    Standard Penetration Test (SPT) - IS 2131 – 1981 - BS EN ISO 22476-3, ASTM D1586 and Australian Standards AS 1289.6.3.1. The number of blows required for 150mm - 450 mm penetration into the ground is the standard penetration number N

c)     Cone Penetration Test (CPT) - IS 4968 (P3) – 1987 – N = 10 q_c kpa (q_{c –} resistance)

d)     NBC – 1983 – SBC – Rock – 440-3240 kpa, Gravel, Soft Shale, Course Sand & Stiff Clay – 440 kpa, Loose gravel, Medium sand & Clay– 245 kpa, Black cotton soil – 130-160 kpa, Fine sand, silt, Moist clay – 100-150 kpa, Very soft clay – 50 kpa

e)     IS: 1498 – 1970 – Classification and identification of soil - Coarse-grained soil ( Gravel & Sand) – larger than 75 micron and smaller than 4.75mm  IS sieve size, Fine-grained soil – Silts & Clays ( low compressibility – liquid limit (L) is less than 35, Medium compressibility – Liquid limit ( I ) is greater than 35 & less than 50 & High compressibility – liquid limit (H) –more than 50)  smaller than 75 micron IS sieve size.

f)     IS: 1893 - 2002 -  Criteria for earthquake resistant design of structures

g)    IS: 4326 – 1993 – Earthquake Resistant Design and Construction of Buildings

h)     IS: 13920 – 1993 – Ductile Detailing of RC Structures subjected to Seismic Forces

Regards,

J.Jaya Ruban,

Land Valuer in Tamilnadu,

Chennai.

How can built the Staircase in the Apartment Buildings ?

How can built the Staircase in the Apartment Buildings ?

Here please find some of practical drawings and tips related to staircase

Regards,

J.Jaya Ruban,

Land Valuer in Tamilnadu,

Chennai.

How can we Fix the Wooden Doors in the Buildings?

WOODWORK FOR DOORS IN BUILDINGS

                   Woodwork or cabinetmaking or carpentry involves the fabrication and installation of wooden members that are generally provided in a building. On site, it involves the assembly of the different wooden components and their fixing.

Important Expressions:

Door jamb: The surrounding case into and out of which a door closes & opens is called as a door jamb.

Nudging: The obstruction caused to the easy closing of door by the doorframe.

Technique:

 Pre construction:

1.      The first snagging work should be completed.

2.      The opening for all the doors should be located according to the GFC drawings.

3.      Once the block work base course has been laid, check if the openings have been made at the correct locations from the walls.

4.      The verticality and the perpendicularity of the openings are checked by a spirit level and a right angle respectively.

5. Check the dimensions of the door openings.

    Usually:

    Main doors           - 1.0 x 2.1 m

    Bedroom doors     - 0.9 x 2.1 m

    Toilet doors          - 0.8 x 2.1 m

6. While unloading, shifting, handling and stacking, care shall be taken to avoid

    tedious one unit over the other as it may cause damage particularly to the 

    decorated surfaces.

7. The material shall be carried preferably flat to avoid damages to corners and                    edges.   

8.  If the materials are received in crates; they shall be stacked as such and removed   

     only when required.

Construction:

1.      The doorframes (brought as single piece from the factory) are placed in the door openings in such a way that a gap of 10mm is maintained on all the sides from the jambs of the walls.

2.      The frames are firmly held in their places, after centering (by plumb bob) with the help of wooden clamps and wedges

3.      The gaps coming in between the frames and the walls are completely filled with door foam.

4.      After a setting time of half an hour for the foam, the wooden clamps and wedges are removed and the excess door foam extruding out of the frame surface is removed out with a putty blade.

5.      Architraves (brought as side and top pieces

6.      from the factory) are placed in their positions.

5.      The architraves are fixed in their positions with lacquer adhesive and then further bound with C clamps and wooden wedges to the walls and doorframes.

6.      After the architraves are completely set in their positions, the C clamps and the wedges are removed.

7.      Suitable locations on the door shutters (brought from the factory) and the doorframes are chipped for fixing hinges.

8.      The door shutters are fixed in the correct position with reference to the doorframes by fixing screws in the hinges.

Post construction:

1.      Once the door shutters are fixed, the gap coming in between the architraves & the tiles are filled with silicone sealant to prevent water seepage.

2.      The LDPE sheets covering the shutters (as brought from the factory) are removed only after the second and third coat of painting is done.         

Quality Inspection Criteria:

    The doorframes and shutters should be aligned exactly vertical and according to the GFC drawings. This should be checked with the help of a spirit level and a plumb bob.

1.      Check the doorframes, shutters and the architraves for perpendicularity with respect to the flooring by using a right angle template and a spirit level.

2.      Colour homogeneity of the doorframe, architraves (both front and back) and   door shutters must be ensured.

3.      Door shutters should close without nudging and a uniform gap should be visible between the doorframe and shutter.

4.      The horizontal and vertical gap between the architrave and plastered wall should be filled with silicone sealant.

Inspection Tools:

1. Plumb bob

2. Spirit level

3. Right angle

4. Approved drawings and schedule of openings.

Regards,

J.Jaya Ruban,

Land Valuer in Tamilnadu,

Chennai.

   

How can we check the quality of the Passenger Lifts in Apartment ?

           How can we check the quality of the Passenger Lifts in Apartment ?    

          

          Residential Lifts are particularly used in houses, or high-rise buildings. Should be thoroughly checked these residential lift that these are fabricated using premium quality raw material. Lift should be qualities like durability, low power consumption and high load bearing capacity. Our clients can avail this lift in preferred configuration at economical price range. These lifts are designed with care numerous options such as, collective control, pleasing interior designs and finishes. One of our Clients has manufacture and exports these residential lifts with proper specification.

                Home Lifts are designed to meet vertical mobility needs in public and private buildings. It is the ideal solution for aged and impaired mobility persons, which can finally move alone and free from stairs. These home lifts which is comfortable for two to five passengers traveling up to 12 meters. These Home Lifts are highly suitable for modern residential buildings and provide them an advanced look. We are suggesting that manufacture and export home lifts are made of superior quality raw material like stainless steel, and made available in custom made sizes, designs and finishes.

Regards,

J.Jaya Ruban,

Land Valuer in Tamilnadu,

Chennai.