Hom ntoo twg koj siv rau pem teb joists?
Hom ntoo twg koj siv rau pem teb joists?

Video: Hom ntoo twg koj siv rau pem teb joists?

Video: Hom ntoo twg koj siv rau pem teb joists?
Video: Tsis tshuav lub sij hawm ntev rau koj lawm lub ntiaj teb no twb yuav kawg nkauj ntseeg instrument 2024, Kaum ib hlis
Anonim

Lub zog ntawm siv ntoo hom siv rau framing muaj xws li: High Bending Strength: Southern yellow Pine thiab Douglas fir. Medium Bending Strength: Hemlock, spruce, thiab redwood. Tsawg Bending Strength: Western liab cedar, Eastern ntoo thuv dawb, thiab ponderosa ntoo thuv.

Xav txog qhov no, kuv yuav tsum siv cov ntoo kho rau hauv pem teb joists?

Nws yog lub tsev code yuav tsum tau siv cov ntoo kho qhov twg ntoo tiv tauj masonry. Qhov no kho ntoo tawm tsam ntoo rot, raws li nws tiv thaiv kev puas tsuaj los ntawm noo noo. Qhov no kho ntoo yog bolted rau lub hauv paus thiab lub pem teb joists feem ntau so rau nws.

Kuv tuaj yeem siv 2x4 rau hauv pem teb joists? ua ntej tau txais kev txhawb nqa los ntawm ib tug girder - ces yog, a 2x4 ua yuav tsum ua li cas. 2x4 ua yog haum rau qab nthab joists qhov twg LL zoo li 20 Lbs. Yog tias koj tau txais ib hom zoo nrog qhov siab tshaj Modulus ntawm Elasticity thiab qib zoo tshaj plaws thiab siv zoo li 12 "o.c. - koj yuav tau txais 8" ncua.

Ntawm no, kuv tuaj yeem siv 2x6 rau pem teb joist?

Nyob rau hauv dav dav, joists spaced 16 nti ntawm qhov chaw ua tau ncua 1.5 npaug ntawm taw lawv qhov tob hauv ntiv tes. A 2 x 8 mus rau 12 ko taw; 2 x 10 mus rau 15 ko taw thiab 2 x 12 mus rau 18 ko taw. Lub lawj loj dua, qhov loj dua joists . 2x 6 zoj yuav tsum tsuas yog siv rau hauv av-theem decks uas tsis xav tau, thiab yuav tsis muab rau, tej guards.

Kuv xav tau dab tsi hauv pem teb joists?

Saib ntawm lub rooj no koj yuav pom muaj kev xaiv nyob rau hauv qhov loj ntawm pem teb joist (2 X 6, 2 X 8, 2 X 10 lossis 2 X 12) thiab muaj kev xaiv hauv joist nrug (12", 16" lossis 14"). pem teb joist spacing yog qhov kev ncua deb ntawm qhov chaw ntawm ob qho tib si ntsia joists.

Pom zoo: