Nkontaabu afiri Wo akontaabu ahorow Baabi a wɔde wura mu
twi

Akontaabu a ɛfa nneɛma a wɔde besisi ɔdan atifi a wɔde gable ayɛ ho


nsenia a wɔde twetwe mfonini 1:

Kyerɛw nsusuwii ahorow wɔ milimita mu

   

Kyerɛw ɔdan no atifi kɛse

Tenten Y
ntrɛmu X
Anidahɔ C
Tenten B

Nneɛma a wɔde yɛ ɔdan atifi

Rafter Trɛw S1
Rafter no mu duru S2
Ɔkwan a ɛda nnua ntam S3
Ɔkwan a ɛda ɔdan atifi ano S4

Lathing board no trɛw O1
Ntaaboo a ɛwɔ adaka no mu no mu duru O2
Wɔ deck board ahorow ntam R

Ɔdan atifi ntama sorokɔ L1
Ɔdan atifi ntama trɛw L2
Nkratafa a ɛka bom (%) L3






Nkontaabu a ɛfa gable dan atifi ho


Akontaabu a ɛfa ɔdan atifi a wɔde gable ayɛ ho Akontaabu a ɛfa nneɛma a wɔde besisi ɔdan atifi a wɔde gable ayɛ ho Nkontaabu a ɛfa gable dan atifi ho Akontaabu a ɛfa ɔdan atifi a wɔde gable ayɛ ho Akontaabu a ɛfa nneɛma a wɔde besisi ɔdan atifi a wɔde gable ayɛ ho

Kyerɛ nsusuwii ahorow a wɔhwehwɛ wɔ milimita mu

X - ofie no trɛw
Y - ɔdan atifi sorokɔ
C - overhang kɛse
B - ɔdan atifi tenten
Y2 - ɔsorokɔ a ɛboro so
X2 - ntrɛwmu foforo


mmoa nwoma

Wɔayɛ dwumadi no sɛnea ɛbɛyɛ a wobebu ɔdan no atifi adansi nneɛma ho akontaa: dodow a wɔde krataa ayɛ (ondulin, nulin, slate anaa dade tile), nneɛma a wɔde yɛ ɔdan atifi (glassine, ruberoid, aduru a wɔde yɛ nneɛma), batten board ne rafters dodow a ɛwɔ hɔ.
Wubetumi nso abu ɔdan no atifi nsusuwii ahorow bi a mfaso wɔ so ho akontaa.

Dwumadi no yɛ adwuma wɔ akwan abien so: wɔ ɔkwan a ɛyɛ mmerɛw sɛ wɔde gable dan atifi ne ɔdan atifi a ɛwɔ afã abien gable (afã horow a ɛwɔ adan atifi), type 1 ne type 2.

Adwene nsisoɔ! Sɛ wowɔ ɔdan atifi a ɔfã biako gable wɔ so a, ɛnde sɛ wopɛ akontaabu no, fa type 1 di kan di dwuma, afei type 2. Na dedaw fi nsɛm a woanya mu no, bu adansi nneɛma dodow ho akontaa: nnua a wɔde si dan, nnua a wɔde kata so, ɔdan atifi ne nneɛma a wɔde ntama ayɛ.
Sɛ ɛnte saa a, mfomso bi betumi aba wɔ akontaabu no mu. Ne nyinaa akyi no, dwumadi no susuw mmeae a wɔatwitwa wɔ ɔdan atifi kɛse a ɛwɔ nkyɛnkyɛn apon no atifi no ho.

Wɔ akontabuo no mu no, wobɛhunu nɔma ahodoɔ bi: ɔdansiɛ nneɛma a ɛwɔ ɔdan no atifi fã no kɛseɛ anaa ne kɛseɛ ne nea ɛwɔ nkahyemdeɛ mu - ne kɛseɛ anaa ne kɛseɛ nyinaa.
Wɔ akontabuo a ɛfa ɔdan atifi foforɔ ho - ne kɛseɛ ne ne kɛseɛ nyinaa, na ɛwɔ nkahyeɛ mu no, nɔma mmienu wɔ hɔ: ɔdan atifi baako kɛseɛ ne ne kɛseɛ ne mmienu foforɔ.

Adwene nsisoɔ! Sɛ worebu nneɛma a wɔde besisi ɔdan atifi a wɔde ntama ayɛ ho akontaa a, susuw nea dwumadi no bu akontaa sɛnea ɔdan atifi fã no te ho.
Sɛ nhwɛso no, 2.8 rows ma 7.7 nkratafa boro row biara mu. Wɔ adansi ankasa mu no, wɔde 3 rows to hɔ.
Sɛ wopɛ sɛ wobu ɔdan atifi ntama dodow ho akontaa pɛpɛɛpɛ a, ɛho hia sɛ wɔtew krataa no sorokɔ so wɔ akontaabu no mu kosi sɛ wobenya nkyerɛwde dodow a ɛyɛ integer.
Mma wo werɛ mmfi sɛ wobɛhyehyɛ dodow a ɛka bom no pɛpɛɛpɛ.

Sɛ wɔrebu nneɛma dodow a ɛwɔ ɔdan atifi nnua atitiriw no mu ho akontaa a, wɔ type 2 mode mu no, dwumadi no nsusuw nea wɔatwa ama ɔfã gable no ho. Eyi fi nsɛnnennen bi a ɛwɔ dwumadie no mu wɔ dwumadie no mu.
Ebia mɛdi ho dwuma daakye.
Nanso, ɛnyɛ nea ɛda adi sɛ rafter nneɛma a ɛboro so no bɛyera anaasɛ ɛbɛyɛ nsakrae bi wɔ wo akontaabu mu.
Wɔbɛyɛ nhyehyɛe foforo nso a wɔde bebu nneɛma a wɔde ntama a wɔde si ɔdan atifi ho akontaa wɔ nyansa mu kɛse.

Na mma wo werɛ mmfi sɛ ɛsɛ sɛ wotɔ adansi nneɛma a wowɔ sika bi a wode bɛsɛe nneɛma.

zhitov Author of the project: Dmitry Zhitov
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