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A civil engineer has to use different building materials including wood.

 The quality and durability of the structure depends upon

  the wood used.

 The life of the structure is also affected by trees grown in

   its vicinity.

 Hence a civil engineer should have some basic

   knowledge about botany.
This Presentation is based on an article
               Botany of Ancient India
by K.V. Vaze, published in Vedic Magazine Lahore
        (November 1922, pages 268 – 282)




     K.V.Vaze-Pioneering Author of books and articles on
           “Science & Technology of Ancient India


                  Presentation by
                   Dr. A.S. Nene
Environment means neighborhood of
Living Things
     • Astrot - things which have no circulation
     • Sastrot - things which have circulation

                   Sastrot things

•   Arwakstrota (Things having downward circulation)
•   Titakastrota (Things having slant circulation)
•   Utstrota (Things having upward circulation)


              Utstrota or plant life
Living Things
Definition of Botany
Indian Botanical Classification

     Western Botanists divide trees into two classes viz.;
      1) Endogenous or growing from inside and
     2) Exogenous or growing from outside.


Ancient Indian Botanists divide trees into four classes viz.;
1. Nissar – Trees having no hard core
2. Antassar- Trees having hard core inside
3. Bahhissar – Trees having hard core outside
4. Sarvassar- Trees having core throughout their cross-section
1.Nissar trees are Pipal, Banyan and Holy fig.
However thick these trees grow they form no core.
Their flowers are closed. Fruits are bunch of flowers
2.Bahhissar trees, Endogenous trees, as per
western Botanist, are Bamboo, Coconut or
Bettle nut and others of this class.
3. Antassar trees or Exogenous trees, as per
western Botanist, are Mango, Jackfruit, Neem
tree and other trees.
4. Sarvassar trees are hard throughout the
cross-section. Tamarind, Babul, Shirish tree
and marking tree are the examples of this
class.
Indian Botanical Classification
Nissar trees and Sarvassar trees are
      unsuitable construction
            Unsuitable trees
  Pipal , Banyan , Holy fig, Kadamba
  Saptaparn ,Tamarind Bilva Palash,
   Pilu ,Kutaj, Shlemantak, Lodhra ,
   Parijat, Kovider, Shirish, Plaksha,
              Mahadroom
Forbidden Trees

• Milky Trees: (with poisonous juices): milk bush
• Thorny Trees: Babul or Prickly pear
• Trees having hard through out: Tamarind or
 Bunyan tree.
• Bushes: Which give shelter to small animals and
 consequently serpents frequent them.
• Fruit bearing Trees: Mango, Guava etc. People are
 tempted to throw stones.
• Other Trees (Trees without hard core)
Forbidden Trees
Unsuitable Trees
Tree Recommended near Habitat

High trees or fruit bearing trees may be
allowed, provided they cast no shadow at
noon or overtop the building. The distance of
tree from house should be twice the height
of tree.
Tree Recommended near Habitat
Trees permitted to grow near Habitat
Confinement of trees (Vratabandha)

Some holy trees may be allowed to grow
near buildings, but they should be confined
to a certain area within a circular wall. Trees
transgressing this boundary by breaking
through     it, should be pruned to avoid
damage to the building.
Classification of Trees
                According to Gender

        Gender: This subdivisions is based on the
             direction of growth of the tree.



• Male trees : Trees strong vertically or in compression

• Female trees: Trees strong laterally or in tension
Male Tree   Female Tree
Hard wood Trees
Classification of Trees
                   According to Age

Age: This subdivisions is based on the five life spans
the tree: Child, Young, Adult, Aged and Dead




The trees in the middle three spans of life are to be used
for constructional purposes. The trees in the extreme two
spans (childhood and decay) of life should not be used.
Directional suitability of Trees
Selection of a Tree for Timber
            Do not Select a Tree, which is


• in the compound of religious place,
• struck by lightening ,
• scorched by fire,
• grown in covered area, in unhygienic conditions or
• grown along the roadside,
• broken by wind or animals or vehicles impact,
• entangled by other trees or wound by creepers,
• grown in anthills or supporting honey beehive,
• grown on cremation ground or which harbors vultures or
  owls.
Formation test




To ascertain the stage of life of a tree, a bore through
the stem, at two feet above ground is made. The age of
the tree is indicated by
1) color of the core,
2) hardness and
3) juice oozing from the bore.

If a tree is already cut, instead of juice, the sound
produced by tamping with a heavy rod, will indicate the
stage of age.
Selection of Wood
Knots in Wood

The wood should not be full of or devoid of knots.
Seasoning of wood

For seasoning of wood, it should be placed on sand
with bottom portion facing wind blowing from west or
south direction.
Felling the
             tree
Before felling the tree, the branches of tree
should be cut first to avoid unusual strains.
Preservation of Wood

The wood should be painted to avoid the
losses of oily substance. An oil coat should
be applied every year after rainy season.
Frames and door shutters

Wood for frames and door shutters should be of same
type so that the action of weather may be same on
both. Unequal action produces unequal strains and it
is detrimental to architecture.
Tree Extracts

For seats of balloons extracts of few trees
are specified in Agastsamhita.
Water retarding substances

The juice of coreless trees contains water retarding
substances (lac) and hence the juice was used in
preparing silk cloth gas holders in ancient India.
Conclusions


• The study of botany was very useful and essential
for Indian engineers.
•   It had formed a part of ancient Indian Engineering
sciences.
References from Ancient Indian Literature


Agastsamhita   Bhrugusamhita   Bruhatsamhita    Geeta

Kashyapa       Manushyalaya    Mayamat          Panini
Shilpa         chandrika
Parashariya    Paraskar        Rajavallabha     Sakaladhikara
krushi         Gruhyasutra

Shatapath      Shilpadeepak    Sukhanand        Taitariya
Bramhana                       Vastu            Bramhana

Vastu Vidya    Yogavashishta   Yuktikalpataru
For more information contact


Dr. A.S. Nene,
Professor of Civil Engineering (Retd)
V.N.I.T. Nagpur
Email: nene_ashok@yahoo.com

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Botany for civil engineers nene

  • 1. A civil engineer has to use different building materials including wood.  The quality and durability of the structure depends upon the wood used.  The life of the structure is also affected by trees grown in its vicinity.  Hence a civil engineer should have some basic knowledge about botany.
  • 2. This Presentation is based on an article Botany of Ancient India by K.V. Vaze, published in Vedic Magazine Lahore (November 1922, pages 268 – 282) K.V.Vaze-Pioneering Author of books and articles on “Science & Technology of Ancient India Presentation by Dr. A.S. Nene
  • 4. Living Things • Astrot - things which have no circulation • Sastrot - things which have circulation Sastrot things • Arwakstrota (Things having downward circulation) • Titakastrota (Things having slant circulation) • Utstrota (Things having upward circulation) Utstrota or plant life
  • 7. Indian Botanical Classification Western Botanists divide trees into two classes viz.; 1) Endogenous or growing from inside and 2) Exogenous or growing from outside. Ancient Indian Botanists divide trees into four classes viz.; 1. Nissar – Trees having no hard core 2. Antassar- Trees having hard core inside 3. Bahhissar – Trees having hard core outside 4. Sarvassar- Trees having core throughout their cross-section
  • 8. 1.Nissar trees are Pipal, Banyan and Holy fig. However thick these trees grow they form no core. Their flowers are closed. Fruits are bunch of flowers
  • 9. 2.Bahhissar trees, Endogenous trees, as per western Botanist, are Bamboo, Coconut or Bettle nut and others of this class.
  • 10. 3. Antassar trees or Exogenous trees, as per western Botanist, are Mango, Jackfruit, Neem tree and other trees.
  • 11. 4. Sarvassar trees are hard throughout the cross-section. Tamarind, Babul, Shirish tree and marking tree are the examples of this class.
  • 13. Nissar trees and Sarvassar trees are unsuitable construction Unsuitable trees Pipal , Banyan , Holy fig, Kadamba Saptaparn ,Tamarind Bilva Palash, Pilu ,Kutaj, Shlemantak, Lodhra , Parijat, Kovider, Shirish, Plaksha, Mahadroom
  • 14. Forbidden Trees • Milky Trees: (with poisonous juices): milk bush • Thorny Trees: Babul or Prickly pear • Trees having hard through out: Tamarind or Bunyan tree. • Bushes: Which give shelter to small animals and consequently serpents frequent them. • Fruit bearing Trees: Mango, Guava etc. People are tempted to throw stones. • Other Trees (Trees without hard core)
  • 17. Tree Recommended near Habitat High trees or fruit bearing trees may be allowed, provided they cast no shadow at noon or overtop the building. The distance of tree from house should be twice the height of tree.
  • 19. Trees permitted to grow near Habitat
  • 20. Confinement of trees (Vratabandha) Some holy trees may be allowed to grow near buildings, but they should be confined to a certain area within a circular wall. Trees transgressing this boundary by breaking through it, should be pruned to avoid damage to the building.
  • 21. Classification of Trees According to Gender Gender: This subdivisions is based on the direction of growth of the tree. • Male trees : Trees strong vertically or in compression • Female trees: Trees strong laterally or in tension
  • 22. Male Tree Female Tree
  • 24. Classification of Trees According to Age Age: This subdivisions is based on the five life spans the tree: Child, Young, Adult, Aged and Dead The trees in the middle three spans of life are to be used for constructional purposes. The trees in the extreme two spans (childhood and decay) of life should not be used.
  • 26. Selection of a Tree for Timber Do not Select a Tree, which is • in the compound of religious place, • struck by lightening , • scorched by fire, • grown in covered area, in unhygienic conditions or • grown along the roadside, • broken by wind or animals or vehicles impact, • entangled by other trees or wound by creepers, • grown in anthills or supporting honey beehive, • grown on cremation ground or which harbors vultures or owls.
  • 27. Formation test To ascertain the stage of life of a tree, a bore through the stem, at two feet above ground is made. The age of the tree is indicated by 1) color of the core, 2) hardness and 3) juice oozing from the bore. If a tree is already cut, instead of juice, the sound produced by tamping with a heavy rod, will indicate the stage of age.
  • 29. Knots in Wood The wood should not be full of or devoid of knots.
  • 30. Seasoning of wood For seasoning of wood, it should be placed on sand with bottom portion facing wind blowing from west or south direction.
  • 31. Felling the tree Before felling the tree, the branches of tree should be cut first to avoid unusual strains.
  • 32. Preservation of Wood The wood should be painted to avoid the losses of oily substance. An oil coat should be applied every year after rainy season.
  • 33. Frames and door shutters Wood for frames and door shutters should be of same type so that the action of weather may be same on both. Unequal action produces unequal strains and it is detrimental to architecture.
  • 34. Tree Extracts For seats of balloons extracts of few trees are specified in Agastsamhita.
  • 35. Water retarding substances The juice of coreless trees contains water retarding substances (lac) and hence the juice was used in preparing silk cloth gas holders in ancient India.
  • 36. Conclusions • The study of botany was very useful and essential for Indian engineers. • It had formed a part of ancient Indian Engineering sciences.
  • 37. References from Ancient Indian Literature Agastsamhita Bhrugusamhita Bruhatsamhita Geeta Kashyapa Manushyalaya Mayamat Panini Shilpa chandrika Parashariya Paraskar Rajavallabha Sakaladhikara krushi Gruhyasutra Shatapath Shilpadeepak Sukhanand Taitariya Bramhana Vastu Bramhana Vastu Vidya Yogavashishta Yuktikalpataru
  • 38. For more information contact Dr. A.S. Nene, Professor of Civil Engineering (Retd) V.N.I.T. Nagpur Email: nene_ashok@yahoo.com