If you are going to build a small bridge that spans perhaps 8 feet or less, I would use 2x8's that are placed 16 inches on center. A span of 12 feet would require 2x10's and spans between 14 and 18 feet would require 2x12's. Anything over 18 feet would require 4x4 or 6x6 p...
Larger decks typically require more than one beam, and this, in turn, generally means you will need to use two joists to span the distance from the ledger to the rim joist. The best way to handle this transition is to have the joists overlap each other at the middle beam, as shown at...
摘要: PROBLEM TO BE SOLVED: To provide ceiling joist structure capable of sufficiently supporting a joist without transmitting the vibration of the floor part of an upper story even when the joist of a long span is set up on a construction composed by a wooden building member....
See Allowable Holes on page 11.(10) Value shown is for plank orientation. T o properly calculate deflections for the full range of typical SCL span and loading applica-tions, bending and shear deflection must be considered. Use the following equation for simple span, uniformly loaded beams: ...
opposite face by 6" 1 2 " Notes: 1. Support back of I-joist web during nailing to prevent damage to web/flange connection. 2. Leave a 1/8-inch gap between top of filler block and bottom of top I-joist flange. 3. Filler block is required between joists for full length of span. ...