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收威令 Wales

 Basic rules:


1 : (跨過)4 個 鏍絲。最佳

2: 3 個

3 加 枋頭/短威令

4 騎馬仔,搖搖板

威令最少要有2隻“眼”, for top row.

最好三個眼或以上

常用短威令:

1.2, 1.5 ,1.8m

要突出牆身250mm min, for 轉角螺絲

 Corner 要夠力,

第一 column 200 to 350mm from corner

間距:


Example:

垂直板枋距: 300mm

Column 鏍絲 tie bar spacing (mm):

200 ( or below)

800

1500

2300

旁邊adjacent corner直角牆(避免撞威令):

300

900

1600

2400

水平間距(mm):

600-750

鎖角板/鎖角牌


螺絲 allowable tilt wrt horizontal is ~ 5 degrees max for double wales. But, within 2~3 degrees preferred.

大範拉扯pull細範

Wales dimension:

50 d* 70h 

Middle spacing:20

介指washer 70 square

絲母: 20

Screaw: 17, 6 tpi

轉角 wale ,突出 200



外皮,第一口螺絲: 500-600




Pressure:


奇怪/另類 做法:



Reference

Wingchun

Cityu BST22348

Polyu BRE4393

YouTube 

Analysis tool 

Apawood

Formwork design tables 

Kctang measurements of concrete works

Formwork Design: Determining the Spacing of Studs, Wales, and Snap Ties for a Concrete Wall Formwork System

VTC course 1301

Wales screw spec

Hydrostatic pressure calculation 

Gravity dam

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