ninv ki plan taiyar karne se pahle ninv vale sthan ki mitti ki janch karna bahut jaruri hota hai. mitti ki janch karne se hamen pata chal jata hai ki mitti men kya gun hain. hamen yah pata chal jata hai ki vah kitna bojh sahan kar sakti hai ya kitna bojh us par dala ja sakta hai. dusre shabdon men iske gunon ka pata lag jane se ham uske anusar hi ninv abhikalpan kar sakte hain. mitti ki janch karne ke lie prayah nimnalikhit tarike apnaye jate hain- nirikshan kisi bhi sanrchna ka dijain taiyar karne se pahle vahan ke sthal ka nirikshan karna bahut jaruri hai.
iske lie us kshetra men bane gadhdon aur pahle ki bani hui imarton ki ninv se ham vahan ke sthal ka andaja laga sakte hain. us kshetra men naye gadhde khodakar bhi us kshetra ke bhuvigyan ka adhyayan kiya ja sakta hai. nagar palika, vikas pradhikaran ya anya sosaiti jo sare kshetra ke nirman ki dekhbhal karti hai aur makanon ke nakshe ki svikriti deti hai uske pas us kshetra ki vahan shakti ka byaura hota hai. usse puchtach karke v kachche kuon ka adhyayan karke us kshetra ki avbhumi ki mulyavan jankari ikatthi ki ja sakti hai. gahrai napna yah parikshana-vidhi keval naram mitti men hi upyogi hai, jahan mitti, bajri ya ret ho.
is vidhi dvara prapt parinam vishvasniya nahin hote tatha unki janch karne ke lie aur nishchit upay karne chahie. is parikshana-vidhi men 2.5 semi. se 4 semi. vyas ki ek nukili char ka prayog kiya jata hai. yah char hathaure se ya kisi dusre tarike se jamin men dhasa di jati hai. thori-thori gahrai tak char ko dhasakar bahar nikal liya jata hai tatha char par lagi mitti ka parikshan kiya jata hai. yah char tab tak jamin men dhasa di jati hai jab tak ki uski nonk kisi sakht adhar se takrati nahin bich-bich men ham char ki nonk par chipti mitti ko vibhinn tahane ki gahrai ka andaja laga sakte hain.
iske alava hathaure ki chot se jitni char andar dhasi hoe us mitti ki parton ki gahrai ka andaja laga sakte hain. ek tajurbekar vyakti char ke andar dhasne ki dar see mitti ke gunon ka asani se andaja lag sakta hai. mitti men tatha ret men kam gahri ninvon ka parikshan karne ke lie ek upakaran, jise lakri ka barma kaha jata hai, bahut labhdayak hota hai. yah lakri men ched karne vale gitmit jaisa hota hai, ki usse jyada sakht hota hai. bedhn-vidhi bhinna-bhinn prakar ke barmon se mitti men chidra kie ja sakte hain. islie is vidhi ko bedhn-vidhi kahte hain.
sadharan bhavnon ki ninvon ka parikshan karne ke lie ye barme bahut suvidhajanak aur upyogi hote hain. bedhan ki vibhinn vidhiyan is prakar hain- barma bedhan vidhi mitti vali aur retili jamin men parikshan karne ke lie yah vidhi hai. ismen barme ko sidha khara kiya jata hai tatha uske upri bhag par lage hue daste (haindala) ke dvara use niche ko dabate hue ghumaya jata hai. lagabhag ek fut gahra chidra karne ke bad bahar nikal liya jata hai tatha uske dvara ikatthi ki gai mitti parikshan ke lie rakh li jati hai.
is barme ki madad se lagabhag 15 mi. gahrai tak miti ka parikshan kiya ja sakta hai. pathrili ya bajri vali jagah par is vidhi ka prayog nahin kiya ja sakta.
jivan men jarurat hai jyotishiya margadarshan ki? abhi bat karen fyuchar point jyotishiyon se!