Saturday, 29 October 2011

Hriattur pawi mawh tlem

Reinfocement (thir) :     Basic Mechanical Properties of steel :-

                                          1) Yield strength  
                                          2) Ultimate tensile strength
                                          3) Elongation (% elongation hi a pawimawh hle a ni).

Fe500 leh a chung lam thir grade te hi kan ram angah chuan hman loh hram tur  ni, a chak chu a chak, MAHSE elongation percentage a hniam a Plastic Hinge a insiam thei lova chu vangin lirnghing duh leh nasat theih na hmun MIZORAM ang ah chuan Fe 415 hman hram tur a ni. Steel % elongation hi a pawi mawh hle a 12% to 20% vel ni hram se test report en thin ngei tur a ni. Hei hi a pawi mawh hle.

Thir tui ek chhiat vangin 1mm diameter hlauh/chhiat nan kum 12.5 a ngai a,kan hman dan a zirin chu aiin a reilo thei a ni.
Tin, 6mm dia thir hi tui ek chhe vek tur in kum 75 lai a ngai a ni.

Thir mam (ms steel) hi a tui ek in concrete nena an in man nghehna (bond strenght) a tha zawk. Heng deform bar chu a tui ek chuan a tial leh tial in kar hi tui ek in a hnawh khata a thap tur a ti awmlo thunga a tha lo a ni.

Tui ek sawi tak ah chuan thir tui ek awm tur hian oxygen leh hnawng a ngai.

Creep deflection (angaia kir leh tawhlo rihna in a delh rei hnu ah) ti tlem tur in thir 0.2 % compression reinf ah hnam tur a ni.

ETC.........

ENGINEER te rawn thin tur a ni. Tin, project leh thil dangte RO TLING vek annih avangin uluk taka Engineer te rawn chunga kal pui thin tur a ni.

Reinforcement tips tlemte

Tension Reinf : A zawmna/lap length a sei zawk tur leh ban etc ah ava in barh lut (bearing) a thuk/thui zawk tur a ni A chhan chu a kil leh a pawn lang lai ah te concrete tih muk a harsa tawh a, concrete in thir a man nghehna (bond) kha a dangte aiin a chak lova chu vang chuan a in man ngheh that theih nan a sei zawk thin tur a ni.

Steel percentage : Min leh max steel % ah structural element ban,beam,slab,wall etc te an awm tur a ni. Kan han design ta a,thir % chhuak kha Min % aiia a tlem chuan min % kha hman mai tur a ni. Shear leh deflection check ngei ngei thin tur a ni.

Epoxy-coated bar : Thir epoxy material (plastic ang deuh) a tuamtu nei, a tui ek vel veng tu a tan, hman a nih chuan `Tension zone' (a hnuai lam a thir dah beam leh slab ah te, wall ah a phei zawnga dah etc) thir ram a tan hman loh tur a ni, concrete bond strenght kha 20% in a ti hniam theia, compression zone (a chung lama thir dah) ah chuan hman a pawilo a ni.

Thil pawimawh tam tak hriat tur te, zawm tur te a awma, chu vang chuan helama thiamna nei Engineer te rawn thin tur a ni.

Friday, 28 October 2011

Thir ram dan tur thenkhat

Slab : Main bar inkar hlat zawng 200mm or 8 inch leh distribution bar inkar hlat zawng 250mm a tam ber ah nise, a khik palh pawn a khi zau dawnlo a ni. In chung a tan 0.24% thir tal hman tur, temprt danglamna dawl zo tur in.

Beam : 0.2% aia tlemlo thir hman tur beam chung lam (compression zone) ah a kul tur vennan.
A sir zawng load/force rawn kal (lateral load) lo do tur in `RING ROD' (stirrup) 8mm aia te lo hman tur a ni (seismic load,wind load) .

Lirnghing lak ah fimkhur rawh

Mizoram hi lirnghing (earthquake) natna lai ber zone-V ah a awma, seismic coeff pawh 0.8 lai a ni. Tin, tlang ram a nih bawk a vang hian uluk taka kan in te leh thil dang kan sak te uluk zual a ngaia, cement concrete hi mahni duh thu thu a tih mai mai tur a nilova,helam a thiamna nei te rawn thin tur a ni. Lirnghing tih chhiat theih loh building hi sak theih a nilova amaherawh chu enge maw chena him thei tur chuan a duan theih a ni. Kan ram lei (soil bearing capacity) hi hmun then khat ah chuan a hniam em em a,kan foundation te hi uluk hle tur a ni. Mahni intih hriat leh vai mistiri tih ang mai mai a tih tur a nilova,keimahni,kan unaute,kan nu leh pa,nupui fanau te hna thawhna leh chenna tur a nih a vang in uluk taka RCC hna hi thawh thin tur a ni.

Foundation,ban,beam,slab etc te hi uluk taka siam thin tur a ni.

Kan State ngei ah pawh lirnghing na vak lo a thleng zauh zauh,kan in buatsaih tan a ngai a ni. Kan thilsakna hman rua te,kan design te uluk hle tur, kan thilsak chu a nalh in a tha hle tur a nia kum tam tak tha taka awm thei tur a ni tur a ni. Pawngpaw nalh hlur ringawt nilovin a chak in a him tel tur a ni.

Mizoram ah vai mistiri leh tute emaw ngaihdan mai maiin in leh thil dang kan sa-a engtik ah emaw kan tan hlauhawmna thlen thei tu a ni thei a tin rei lo te hnu ah a chhe leh mai thin a ni.

RCC Structure te hi a that em a vang in a chhe nghal rum rum lo a ni theia,ngaihthah chi a nilo tih hriat a tha.

IN HIM THA HI KAN NUNNA A TAN A PAWIMAWH A NI.

Engineering in Mizoram

Mizoram-ah Engineer thiam tak tak anlo chhuak zela,tin kan ram hma sawn zel nan Engineering a topics hrang hrang ah hma kan lo sawn theih nan thawh tur nei chuan han thawh teh u.